diff --git a/.github/workflows/cleanup.yml b/.github/workflows/cleanup.yml
new file mode 100644
index 0000000..f56bb4a
--- /dev/null
+++ b/.github/workflows/cleanup.yml
@@ -0,0 +1,29 @@
+name: Delete old workflow runs
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches:
+      - 'master'
+      - 'main'
+  schedule:
+    - cron: '0 0 1 * *'
+# Run monthly, at 00:00 on the 1st day of month.
+
+jobs:
+  del_runs:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Sleep for 180 seconds
+        uses: jakejarvis/wait-action@master
+        with:
+          time: '180s'
+      - name: Delete workflow runs
+        uses: Mattraks/delete-workflow-runs@main
+        with:
+          token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          retain_days: 0
+          keep_minimum_runs: 2
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
new file mode 100644
index 0000000..9e9d349
--- /dev/null
+++ b/.github/workflows/static.yml
@@ -0,0 +1,43 @@
+# Simple workflow for deploying static content to GitHub Pages
+name: Deploy static content to Pages
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: ["master"]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  # Single deploy job since we're just deploying
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          # Upload entire repository
+          path: '.'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
diff --git a/LICENSE b/LICENSE
index ce669c7..7dde1b3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -7,3 +7,4 @@ Permission is hereby granted, free of charge, to any person obtaining a copy of
 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
diff --git a/README.md b/README.md
index be45684..02d5d78 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,31 @@ Client-side encrypted plaintext editor that can persist/sync with GitHub Gists.
 
 The editor is customized to my personal usage - CodeMirror in Vim mode for pure plaintext notetaking across multiple fixed-configuration machines (VDI, etc.). Often this includes confidential notes that I do not want to share with Google/Microsoft/GitHub, hence SJCL client-side encryption. Depending on your usage, you may want to inline everything in a single HTML file and/or add localStorage for offline/single-machine use, similar to [Encrypted](https://github.com/srpeck/encrypted).
 
+Currently file filename field is locked first, because the script only loads the main gist file.
+You can save it under any name , but remember it will always open your "main" file.
+
+
+improved version:
+
+* uses 256 bit encryption now
+
+* has emacs and sublime keybindings 
+
+* uses localstorage for token and gist id
+
+* indicates that you "read -then-write" in the button
+
+* has clear buttons for all stored things
+
+
+
+## Be sure to use a github acces token , basic auth is still supported , but only with token ( PATCH  gives 404 with regular password etc. https://stackoverflow.com/questions/34477537/github-gist-api-patch-doesnt-work )
+
 ![](demo.gif)
 
 MIT License
+
+## credits
+
+#### [random backgrounds from this example](https://codepen.io/omascaros/pen/LYeppN)
+#### [random background sources idea from awik.io](https://awik.io/generate-random-images-unsplash-without-using-api/)
\ No newline at end of file
diff --git a/codemirror-compressed.js b/codemirror-compressed.js
index 0a569c3..f9aaf93 100644
--- a/codemirror-compressed.js
+++ b/codemirror-compressed.js
@@ -1,22 +1,9833 @@
-/* CodeMirror - Minified & Bundled
-   Generated on 9/10/2016 with http://codemirror.net/doc/compress.html
-   Version: HEAD
-
-   CodeMirror Library:
-   - codemirror.js
-   Add-ons:
-   - dialog.js
-   - matchbrackets.js
-   - searchcursor.js
-   Keymaps:
-   - vim.js
- */
-
-!function(a){if("object"==typeof exports&&"object"==typeof module)module.exports=a();else{if("function"==typeof define&&define.amd)return define([],a);(this||window).CodeMirror=a()}}(function(){"use strict";function y(a,b){if(!(this instanceof y))return new y(a,b);this.options=b=b?pg(b):{},pg(Fd,b,!1),L(b);var c=b.value;"string"==typeof c&&(c=new ff(c,b.mode,null,b.lineSeparator)),this.doc=c;var d=new y.inputStyles[b.inputStyle](this),e=this.display=new z(a,c,d);e.wrapper.CodeMirror=this,H(this),F(this),b.lineWrapping&&(this.display.wrapper.className+=" CodeMirror-wrap"),b.autofocus&&!p&&e.input.focus(),P(this),this.state={keyMaps:[],overlays:[],modeGen:0,overwrite:!1,delayingBlurEvent:!1,focused:!1,suppressEdits:!1,pasteIncoming:!1,cutIncoming:!1,selectingText:!1,draggingText:!1,highlight:new dg,keySeq:null,specialChars:null};var i=this;f&&11>g&&setTimeout(function(){i.display.input.reset(!0)},20),uc(this),Jg(),$b(this),this.curOp.forceUpdate=!0,kf(this,c),b.autofocus&&!p||i.hasFocus()?setTimeout(qg(cd,this),20):dd(this);for(var j in Gd)Gd.hasOwnProperty(j)&&Gd[j](this,b[j],Id);U(this),b.finishInit&&b.finishInit(this);for(var k=0;k<Md.length;++k)Md[k](this);ac(this),h&&b.lineWrapping&&"optimizelegibility"==getComputedStyle(e.lineDiv).textRendering&&(e.lineDiv.style.textRendering="auto")}function z(a,b,d){var e=this;this.input=d,e.scrollbarFiller=xg("div",null,"CodeMirror-scrollbar-filler"),e.scrollbarFiller.setAttribute("cm-not-content","true"),e.gutterFiller=xg("div",null,"CodeMirror-gutter-filler"),e.gutterFiller.setAttribute("cm-not-content","true"),e.lineDiv=xg("div",null,"CodeMirror-code"),e.selectionDiv=xg("div",null,null,"position: relative; z-index: 1"),e.cursorDiv=xg("div",null,"CodeMirror-cursors"),e.measure=xg("div",null,"CodeMirror-measure"),e.lineMeasure=xg("div",null,"CodeMirror-measure"),e.lineSpace=xg("div",[e.measure,e.lineMeasure,e.selectionDiv,e.cursorDiv,e.lineDiv],null,"position: relative; outline: none"),e.mover=xg("div",[xg("div",[e.lineSpace],"CodeMirror-lines")],null,"position: relative"),e.sizer=xg("div",[e.mover],"CodeMirror-sizer"),e.sizerWidth=null,e.heightForcer=xg("div",null,null,"position: absolute; height: "+$f+"px; width: 1px;"),e.gutters=xg("div",null,"CodeMirror-gutters"),e.lineGutter=null,e.scroller=xg("div",[e.sizer,e.heightForcer,e.gutters],"CodeMirror-scroll"),e.scroller.setAttribute("tabIndex","-1"),e.wrapper=xg("div",[e.scrollbarFiller,e.gutterFiller,e.scroller],"CodeMirror"),f&&8>g&&(e.gutters.style.zIndex=-1,e.scroller.style.paddingRight=0),h||c&&p||(e.scroller.draggable=!0),a&&(a.appendChild?a.appendChild(e.wrapper):a(e.wrapper)),e.viewFrom=e.viewTo=b.first,e.reportedViewFrom=e.reportedViewTo=b.first,e.view=[],e.renderedView=null,e.externalMeasured=null,e.viewOffset=0,e.lastWrapHeight=e.lastWrapWidth=0,e.updateLineNumbers=null,e.nativeBarWidth=e.barHeight=e.barWidth=0,e.scrollbarsClipped=!1,e.lineNumWidth=e.lineNumInnerWidth=e.lineNumChars=null,e.alignWidgets=!1,e.cachedCharWidth=e.cachedTextHeight=e.cachedPaddingH=null,e.maxLine=null,e.maxLineLength=0,e.maxLineChanged=!1,e.wheelDX=e.wheelDY=e.wheelStartX=e.wheelStartY=null,e.shift=!1,e.selForContextMenu=null,e.activeTouch=null,d.init(e)}function A(a){a.doc.mode=y.getMode(a.options,a.doc.modeOption),B(a)}function B(a){a.doc.iter(function(a){a.stateAfter&&(a.stateAfter=null),a.styles&&(a.styles=null)}),a.doc.frontier=a.doc.first,mb(a,100),a.state.modeGen++,a.curOp&&nc(a)}function C(a){a.options.lineWrapping?(Fg(a.display.wrapper,"CodeMirror-wrap"),a.display.sizer.style.minWidth="",a.display.sizerWidth=null):(Eg(a.display.wrapper,"CodeMirror-wrap"),K(a)),E(a),nc(a),Kb(a),setTimeout(function(){Q(a)},100)}function D(a){var b=Wb(a.display),c=a.options.lineWrapping,d=c&&Math.max(5,a.display.scroller.clientWidth/Xb(a.display)-3);return function(e){if(Be(a.doc,e))return 0;var f=0;if(e.widgets)for(var g=0;g<e.widgets.length;g++)e.widgets[g].height&&(f+=e.widgets[g].height);return c?f+(Math.ceil(e.text.length/d)||1)*b:f+b}}function E(a){var b=a.doc,c=D(a);b.iter(function(a){var b=c(a);b!=a.height&&of(a,b)})}function F(a){a.display.wrapper.className=a.display.wrapper.className.replace(/\s*cm-s-\S+/g,"")+a.options.theme.replace(/(^|\s)\s*/g," cm-s-"),Kb(a)}function G(a){H(a),nc(a),setTimeout(function(){T(a)},20)}function H(a){var b=a.display.gutters,c=a.options.gutters;zg(b);for(var d=0;d<c.length;++d){var e=c[d],f=b.appendChild(xg("div",null,"CodeMirror-gutter "+e));"CodeMirror-linenumbers"==e&&(a.display.lineGutter=f,f.style.width=(a.display.lineNumWidth||1)+"px")}b.style.display=d?"":"none",I(a)}function I(a){var b=a.display.gutters.offsetWidth;a.display.sizer.style.marginLeft=b+"px"}function J(a){if(0==a.height)return 0;for(var c,b=a.text.length,d=a;c=ue(d);){var e=c.find(0,!0);d=e.from.line,b+=e.from.ch-e.to.ch}for(d=a;c=ve(d);){var e=c.find(0,!0);b-=d.text.length-e.from.ch,d=e.to.line,b+=d.text.length-e.to.ch}return b}function K(a){var b=a.display,c=a.doc;b.maxLine=lf(c,c.first),b.maxLineLength=J(b.maxLine),b.maxLineChanged=!0,c.iter(function(a){var 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ca(a){if(a.widgets)for(var b=0;b<a.widgets.length;++b)a.widgets[b].height=a.widgets[b].node.parentNode.offsetHeight}function da(a){for(var b=a.display,c={},d={},e=b.gutters.clientLeft,f=b.gutters.firstChild,g=0;f;f=f.nextSibling,++g)c[a.options.gutters[g]]=f.offsetLeft+f.clientLeft+e,d[a.options.gutters[g]]=f.clientWidth;return{fixedPos:W(b),gutterTotalWidth:b.gutters.offsetWidth,gutterLeft:c,gutterWidth:d,wrapperWidth:b.wrapper.clientWidth}}function ea(a,b,c){function i(b){var c=b.nextSibling;return h&&q&&a.display.currentWheelTarget==b?b.style.display="none":b.parentNode.removeChild(b),c}for(var d=a.display,e=a.options.lineNumbers,f=d.lineDiv,g=f.firstChild,j=d.view,k=d.viewFrom,l=0;l<j.length;l++){var m=j[l];if(m.hidden);else if(m.node&&m.node.parentNode==f){for(;g!=m.node;)g=i(g);var o=e&&null!=b&&k>=b&&m.lineNumber;m.changes&&(kg(m.changes,"gutter")>-1&&(o=!1),fa(a,m,k,c)),o&&(zg(m.lineNumber),m.lineNumber.appendChild(document.createTextNode(V(a.options,k)))),g=m.node.nextSibling}else{var n=na(a,m,k,c);f.insertBefore(n,g)}k+=m.size}for(;g;)g=i(g)}function fa(a,b,c,d){for(var e=0;e<b.changes.length;e++){var f=b.changes[e];"text"==f?ja(a,b):"gutter"==f?la(a,b,c,d):"class"==f?ka(b):"widget"==f&&ma(a,b,d)}b.changes=null}function ga(a){return a.node==a.text&&(a.node=xg("div",null,null,"position: relative"),a.text.parentNode&&a.text.parentNode.replaceChild(a.node,a.text),a.node.appendChild(a.text),f&&8>g&&(a.node.style.zIndex=2)),a.node}function ha(a){var b=a.bgClass?a.bgClass+" "+(a.line.bgClass||""):a.line.bgClass;if(b&&(b+=" CodeMirror-linebackground"),a.background)b?a.background.className=b:(a.background.parentNode.removeChild(a.background),a.background=null);else if(b){var c=ga(a);a.background=c.insertBefore(xg("div",null,b),c.firstChild)}}function ia(a,b){var 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d=Qb(a,b,"div",null,null,!a.options.singleCursorHeightPerLine),e=c.appendChild(xg("div","\xa0","CodeMirror-cursor"));if(e.style.left=d.left+"px",e.style.top=d.top+"px",e.style.height=Math.max(0,d.bottom-d.top)*a.options.cursorHeight+"px",d.other){var f=c.appendChild(xg("div","\xa0","CodeMirror-cursor CodeMirror-secondarycursor"));f.style.display="",f.style.left=d.other.left+"px",f.style.top=d.other.top+"px",f.style.height=.85*(d.other.bottom-d.other.top)+"px"}}function kb(a,b,c){function j(a,b,c,d){0>b&&(b=0),b=Math.round(b),d=Math.round(d),f.appendChild(xg("div",null,"CodeMirror-selected","position: absolute; left: "+a+"px; top: "+b+"px; width: "+(null==c?i-a:c)+"px; height: "+(d-b)+"px"))}function k(b,c,d){function m(c,d){return Pb(a,ra(b,c),"div",f,d)}var k,l,f=lf(e,b),g=f.text.length;return Wg(sf(f),c||0,null==d?g:d,function(a,b,e){var n,o,p,f=m(a,"left");if(a==b)n=f,o=p=f.left;else{if(n=m(b-1,"right"),"rtl"==e){var 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c=!0;b.cursorDiv.style.visibility="",a.options.cursorBlinkRate>0?b.blinker=setInterval(function(){b.cursorDiv.style.visibility=(c=!c)?"":"hidden"},a.options.cursorBlinkRate):a.options.cursorBlinkRate<0&&(b.cursorDiv.style.visibility="hidden")}}function mb(a,b){a.doc.mode.startState&&a.doc.frontier<a.display.viewTo&&a.state.highlight.set(b,qg(nb,a))}function nb(a){var b=a.doc;if(b.frontier<b.first&&(b.frontier=b.first),!(b.frontier>=a.display.viewTo)){var c=+new Date+a.options.workTime,d=Od(b.mode,pb(a,b.frontier)),e=[];b.iter(b.frontier,Math.min(b.first+b.size,a.display.viewTo+500),function(f){if(b.frontier>=a.display.viewFrom){var g=f.styles,h=f.text.length>a.options.maxHighlightLength,i=Pe(a,f,h?Od(b.mode,d):d,!0);f.styles=i.styles;var j=f.styleClasses,k=i.classes;k?f.styleClasses=k:j&&(f.styleClasses=null);for(var l=!g||g.length!=f.styles.length||j!=k&&(!j||!k||j.bgClass!=k.bgClass||j.textClass!=k.textClass),m=0;!l&&m<g.length;++m)l=g[m]!=f.styles[m];l&&e.push(b.frontier),f.stateAfter=h?d:Od(b.mode,d)}else f.text.length<=a.options.maxHighlightLength&&Re(a,f.text,d),f.stateAfter=b.frontier%5==0?Od(b.mode,d):null;return++b.frontier,+new Date>c?(mb(a,a.options.workDelay),!0):void 0}),e.length&&hc(a,function(){for(var b=0;b<e.length;b++)oc(a,e[b],"text")})}}function ob(a,b,c){for(var d,e,f=a.doc,g=c?-1:b-(a.doc.mode.innerMode?1e3:100),h=b;h>g;--h){if(h<=f.first)return f.first;var i=lf(f,h-1);if(i.stateAfter&&(!c||h<=f.frontier))return h;var j=eg(i.text,null,a.options.tabSize);(null==e||d>j)&&(e=h-1,d=j)}return e}function pb(a,b,c){var d=a.doc,e=a.display;if(!d.mode.startState)return!0;var f=ob(a,b,c),g=f>d.first&&lf(d,f-1).stateAfter;return g=g?Od(d.mode,g):Pd(d.mode),d.iter(f,b,function(c){Re(a,c.text,g);var h=f==b-1||f%5==0||f>=e.viewFrom&&f<e.viewTo;c.stateAfter=h?Od(d.mode,g):null,++f}),c&&(d.frontier=f),g}function qb(a){return a.lineSpace.offsetTop}function rb(a){return a.mover.offsetHeight-a.lineSpace.offsetHeight}function sb(a){if(a.cachedPaddingH)return a.cachedPaddingH;var b=Ag(a.measure,xg("pre","x")),c=window.getComputedStyle?window.getComputedStyle(b):b.currentStyle,d={left:parseInt(c.paddingLeft),right:parseInt(c.paddingRight)};return isNaN(d.left)||isNaN(d.right)||(a.cachedPaddingH=d),d}function tb(a){return $f-a.display.nativeBarWidth}function ub(a){return a.display.scroller.clientWidth-tb(a)-a.display.barWidth}function vb(a){return a.display.scroller.clientHeight-tb(a)-a.display.barHeight}function wb(a,b,c){var d=a.options.lineWrapping,e=d&&ub(a);if(!b.measure.heights||d&&b.measure.width!=e){var f=b.measure.heights=[];if(d){b.measure.width=e;for(var g=b.text.firstChild.getClientRects(),h=0;h<g.length-1;h++){var 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e=xb(d,b,c);return{line:b,view:d,rect:null,map:e.map,cache:e.cache,before:e.before,hasHeights:!1}}function Cb(a,b,c,d,e){b.before&&(c=-1);var g,f=c+(d||"");return b.cache.hasOwnProperty(f)?g=b.cache[f]:(b.rect||(b.rect=b.view.text.getBoundingClientRect()),b.hasHeights||(wb(a,b.view,b.rect),b.hasHeights=!0),g=Gb(a,b,c,d),g.bogus||(b.cache[f]=g)),{left:g.left,right:g.right,top:e?g.rtop:g.top,bottom:e?g.rbottom:g.bottom
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m=0;4>m;m++){for(;i&&wg(b.line.text.charAt(e.coverStart+i));)--i;for(;e.coverStart+j<e.coverEnd&&wg(b.line.text.charAt(e.coverStart+j));)++j;if(l=f&&9>g&&0==i&&j==e.coverEnd-e.coverStart?h.parentNode.getBoundingClientRect():Fb(yg(h,i,j).getClientRects(),d),l.left||l.right||0==i)break;j=i,i-=1,k="right"}f&&11>g&&(l=Hb(a.display.measure,l))}else{i>0&&(k=d="right");var n;l=a.options.lineWrapping&&(n=h.getClientRects()).length>1?n["right"==d?n.length-1:0]:h.getBoundingClientRect()}if(f&&9>g&&!i&&(!l||!l.left&&!l.right)){var o=h.parentNode.getClientRects()[0];l=o?{left:o.left,right:o.left+Xb(a.display),top:o.top,bottom:o.bottom}:Db}for(var p=l.top-b.rect.top,q=l.bottom-b.rect.top,r=(p+q)/2,s=b.view.measure.heights,m=0;m<s.length-1&&!(r<s[m]);m++);var t=m?s[m-1]:0,u=s[m],v={left:("right"==k?l.right:l.left)-b.rect.left,right:("left"==k?l.left:l.right)-b.rect.left,top:t,bottom:u};return l.left||l.right||(v.bogus=!0),a.options.singleCursorHeightPerLine||(v.rtop=p,v.rbottom=q),v}function Hb(a,b){if(!window.screen||null==screen.logicalXDPI||screen.logicalXDPI==screen.deviceXDPI||!Ug(a))return b;var c=screen.logicalXDPI/screen.deviceXDPI,d=screen.logicalYDPI/screen.deviceYDPI;return{left:b.left*c,right:b.right*c,top:b.top*d,bottom:b.bottom*d}}function Ib(a){if(a.measure&&(a.measure.cache={},a.measure.heights=null,a.rest))for(var b=0;b<a.rest.length;b++)a.measure.caches[b]={}}function Jb(a){a.display.externalMeasure=null,zg(a.display.lineMeasure);for(var b=0;b<a.display.view.length;b++)Ib(a.display.view[b])}function Kb(a){Jb(a),a.display.cachedCharWidth=a.display.cachedTextHeight=a.display.cachedPaddingH=null,a.options.lineWrapping||(a.display.maxLineChanged=!0),a.display.lineNumChars=null}function Lb(){return window.pageXOffset||(document.documentElement||document.body).scrollLeft}function Mb(){return window.pageYOffset||(document.documentElement||document.body).scrollTop}function Nb(a,b,c,d){if(b.widgets)for(var e=0;e<b.widgets.length;++e)if(b.widgets[e].above){var f=Fe(b.widgets[e]);c.top+=f,c.bottom+=f}if("line"==d)return c;d||(d="local");var g=rf(b);if("local"==d?g+=qb(a.display):g-=a.display.viewOffset,"page"==d||"window"==d){var h=a.display.lineSpace.getBoundingClientRect();g+=h.top+("window"==d?0:Mb());var i=h.left+("window"==d?0:Lb());c.left+=i,c.right+=i}return c.top+=g,c.bottom+=g,c}function Ob(a,b,c){if("div"==c)return b;var d=b.left,e=b.top;if("page"==c)d-=Lb(),e-=Mb();else if("local"==c||!c){var f=a.display.sizer.getBoundingClientRect();d+=f.left,e+=f.top}var g=a.display.lineSpace.getBoundingClientRect();return{left:d-g.left,top:e-g.top}}function Pb(a,b,c,d,e){return d||(d=lf(a.doc,b.line)),Nb(a,d,zb(a,d,b.ch,e),c)}function Qb(a,b,c,d,e,f){function g(b,g){var h=Cb(a,e,b,g?"right":"left",f);return g?h.left=h.right:h.right=h.left,Nb(a,d,h,c)}function h(a,b){var c=i[b],d=c.level%2;return a==Xg(c)&&b&&c.level<i[b-1].level?(c=i[--b],a=Yg(c)-(c.level%2?0:1),d=!0):a==Yg(c)&&b<i.length-1&&c.level<i[b+1].level&&(c=i[++b],a=Xg(c)-c.level%2,d=!1),d&&a==c.to&&a>c.from?g(a-1):g(a,d)}d=d||lf(a.doc,b.line),e||(e=Bb(a,d));var i=sf(d),j=b.ch;if(!i)return g(j);var k=eh(i,j),l=h(j,k);return null!=dh&&(l.other=h(j,dh)),l}function Rb(a,b){var c=0,b=Qa(a.doc,b);a.options.lineWrapping||(c=Xb(a.display)*b.ch);var d=lf(a.doc,b.line),e=rf(d)+qb(a.display);return{left:c,right:c,top:e,bottom:e+d.height}}function Sb(a,b,c,d){var e=ra(a,b);return e.xRel=d,c&&(e.outside=!0),e}function Tb(a,b,c){var d=a.doc;if(c+=a.display.viewOffset,0>c)return Sb(d.first,0,!0,-1);var e=qf(d,c),f=d.first+d.size-1;if(e>f)return Sb(d.first+d.size-1,lf(d,f).text.length,!0,1);0>b&&(b=0);for(var g=lf(d,e);;){var h=Ub(a,g,e,b,c),i=ve(g),j=i&&i.find(0,!0);if(!i||!(h.ch>j.from.ch||h.ch==j.from.ch&&h.xRel>0))return h;e=pf(g=j.to.line)}}function Ub(a,b,c,d,e){function j(d){var e=Qb(a,ra(c,d),"line",b,i);return g=!0,f>e.bottom?e.left-h:f<e.top?e.left+h:(g=!1,e.left)}var f=e-rf(b),g=!1,h=2*a.display.wrapper.clientWidth,i=Bb(a,b),k=sf(b),l=b.text.length,m=Zg(b),n=$g(b),o=j(m),p=g,q=j(n),r=g;if(d>q)return Sb(c,n,r,1);for(;;){if(k?n==m||n==gh(b,m,1):1>=n-m){var s=o>d||q-d>=d-o?m:n,t=s==m?p:r,u=d-(s==m?o:q);if(r&&!k&&!/\s/.test(b.text.charAt(s))&&u>0&&s<b.text.length&&i.view.measure.heights.length>1){var v=Cb(a,i,s,"right");f<=v.bottom&&f>=v.top&&Math.abs(d-v.right)<u&&(t=!1,s++,u=d-v.right)}for(;wg(b.text.charAt(s));)++s;var w=Sb(c,s,t,-1>u?-1:u>1?1:0);return w}var x=Math.ceil(l/2),y=m+x;if(k){y=m;for(var z=0;x>z;++z)y=gh(b,y,1)}var A=j(y);A>d?(n=y,q=A,(r=g)&&(q+=1e3),l=x):(m=y,o=A,p=g,l-=x)}}function Wb(a){if(null!=a.cachedTextHeight)return a.cachedTextHeight;if(null==Vb){Vb=xg("pre");for(var b=0;49>b;++b)Vb.appendChild(document.createTextNode("x")),Vb.appendChild(xg("br"));Vb.appendChild(document.createTextNode("x"))}Ag(a.measure,Vb);var c=Vb.offsetHeight/50;return c>3&&(a.cachedTextHeight=c),zg(a.measure),c||1}function Xb(a){if(null!=a.cachedCharWidth)return a.cachedCharWidth;var b=xg("span","xxxxxxxxxx"),c=xg("pre",[b]);Ag(a.measure,c);var d=b.getBoundingClientRect(),e=(d.right-d.left)/10;return e>2&&(a.cachedCharWidth=e),e||10}function $b(a){a.curOp={cm:a,viewChanged:!1,startHeight:a.doc.height,forceUpdate:!1,updateInput:null,typing:!1,changeObjs:null,cursorActivityHandlers:null,cursorActivityCalled:0,selectionChanged:!1,updateMaxLine:!1,scrollLeft:null,scrollTop:null,scrollToPos:null,focus:!1,id:++Zb},Yb?Yb.ops.push(a.curOp):a.curOp.ownsGroup=Yb={ops:[a.curOp],delayedCallbacks:[]}}function _b(a){var b=a.delayedCallbacks,c=0;do{for(;c<b.length;c++)b[c].call(null);for(var d=0;d<a.ops.length;d++){var e=a.ops[d];if(e.cursorActivityHandlers)for(;e.cursorActivityCalled<e.cursorActivityHandlers.length;)e.cursorActivityHandlers[e.cursorActivityCalled++].call(null,e.cm)}}while(c<b.length)}function ac(a){var b=a.curOp,c=b.ownsGroup;if(c)try{_b(c)}finally{Yb=null;for(var d=0;d<c.ops.length;d++)c.ops[d].cm.curOp=null;bc(c)}}function bc(a){for(var b=a.ops,c=0;c<b.length;c++)cc(b[c]);for(var c=0;c<b.length;c++)dc(b[c]);for(var c=0;c<b.length;c++)ec(b[c]);for(var c=0;c<b.length;c++)fc(b[c]);for(var c=0;c<b.length;c++)gc(b[c])}function cc(a){var b=a.cm,c=b.display;Y(b),a.updateMaxLine&&K(b),a.mustUpdate=a.viewChanged||a.forceUpdate||null!=a.scrollTop||a.scrollToPos&&(a.scrollToPos.from.line<c.viewFrom||a.scrollToPos.to.line>=c.viewTo)||c.maxLineChanged&&b.options.lineWrapping,a.update=a.mustUpdate&&new X(b,a.mustUpdate&&{top:a.scrollTop,ensure:a.scrollToPos},a.forceUpdate)}function dc(a){a.updatedDisplay=a.mustUpdate&&Z(a.cm,a.update)}function ec(a){var b=a.cm,c=b.display;a.updatedDisplay&&ba(b),a.barMeasure=M(b),c.maxLineChanged&&!b.options.lineWrapping&&(a.adjustWidthTo=zb(b,c.maxLine,c.maxLine.text.length).left+3,b.display.sizerWidth=a.adjustWidthTo,a.barMeasure.scrollWidth=Math.max(c.scroller.clientWidth,c.sizer.offsetLeft+a.adjustWidthTo+tb(b)+b.display.barWidth),a.maxScrollLeft=Math.max(0,c.sizer.offsetLeft+a.adjustWidthTo-ub(b))),(a.updatedDisplay||a.selectionChanged)&&(a.preparedSelection=c.input.prepareSelection(a.focus))}function fc(a){var b=a.cm;null!=a.adjustWidthTo&&(b.display.sizer.style.minWidth=a.adjustWidthTo+"px",a.maxScrollLeft<b.doc.scrollLeft&&Nc(b,Math.min(b.display.scroller.scrollLeft,a.maxScrollLeft),!0),b.display.maxLineChanged=!1);var c=a.focus&&a.focus==Cg()&&(!document.hasFocus||document.hasFocus());a.preparedSelection&&b.display.input.showSelection(a.preparedSelection,c),(a.updatedDisplay||a.startHeight!=b.doc.height)&&Q(b,a.barMeasure),a.updatedDisplay&&aa(b,a.barMeasure),a.selectionChanged&&lb(b),b.state.focused&&a.updateInput&&b.display.input.reset(a.typing),c&&wa(a.cm)}function gc(a){var b=a.cm,c=b.display,d=b.doc;if(a.updatedDisplay&&$(b,a.update),null==c.wheelStartX||null==a.scrollTop&&null==a.scrollLeft&&!a.scrollToPos||(c.wheelStartX=c.wheelStartY=null),null==a.scrollTop||c.scroller.scrollTop==a.scrollTop&&!a.forceScroll||(d.scrollTop=Math.max(0,Math.min(c.scroller.scrollHeight-c.scroller.clientHeight,a.scrollTop)),c.scrollbars.setScrollTop(d.scrollTop),c.scroller.scrollTop=d.scrollTop),null==a.scrollLeft||c.scroller.scrollLeft==a.scrollLeft&&!a.forceScroll||(d.scrollLeft=Math.max(0,Math.min(c.scroller.scrollWidth-c.scroller.clientWidth,a.scrollLeft)),c.scrollbars.setScrollLeft(d.scrollLeft),c.scroller.scrollLeft=d.scrollLeft,T(b)),a.scrollToPos){var e=ud(b,Qa(d,a.scrollToPos.from),Qa(d,a.scrollToPos.to),a.scrollToPos.margin);a.scrollToPos.isCursor&&b.state.focused&&td(b,e)}var f=a.maybeHiddenMarkers,g=a.maybeUnhiddenMarkers;if(f)for(var h=0;h<f.length;++h)f[h].lines.length||Sf(f[h],"hide");if(g)for(var h=0;h<g.length;++h)g[h].lines.length&&Sf(g[h],"unhide");c.wrapper.offsetHeight&&(d.scrollTop=b.display.scroller.scrollTop),a.changeObjs&&Sf(b,"changes",b,a.changeObjs),a.update&&a.update.finish()}function hc(a,b){if(a.curOp)return b();$b(a);try{return b()}finally{ac(a)}}function ic(a,b){return function(){if(a.curOp)return b.apply(a,arguments);$b(a);try{return b.apply(a,arguments)}finally{ac(a)}}}function jc(a){return function(){if(this.curOp)return a.apply(this,arguments);$b(this);try{return a.apply(this,arguments)}finally{ac(this)}}}function kc(a){return function(){var b=this.cm;if(!b||b.curOp)return a.apply(this,arguments);$b(b);try{return a.apply(this,arguments)}finally{ac(b)}}}function lc(a,b,c){this.line=b,this.rest=ye(b),this.size=this.rest?pf(ig(this.rest))-c+1:1,this.node=this.text=null,this.hidden=Be(a,b)}function mc(a,b,c){for(var e,d=[],f=b;c>f;f=e){var g=new lc(a.doc,lf(a.doc,f),f);e=f+g.size,d.push(g)}return d}function nc(a,b,c,d){null==b&&(b=a.doc.first),null==c&&(c=a.doc.first+a.doc.size),d||(d=0);var e=a.display;if(d&&c<e.viewTo&&(null==e.updateLineNumbers||e.updateLineNumbers>b)&&(e.updateLineNumbers=b),a.curOp.viewChanged=!0,b>=e.viewTo)x&&ze(a.doc,b)<e.viewTo&&pc(a);else if(c<=e.viewFrom)x&&Ae(a.doc,c+d)>e.viewFrom?pc(a):(e.viewFrom+=d,e.viewTo+=d);else if(b<=e.viewFrom&&c>=e.viewTo)pc(a);else if(b<=e.viewFrom){var f=rc(a,c,c+d,1);f?(e.view=e.view.slice(f.index),e.viewFrom=f.lineN,e.viewTo+=d):pc(a)}else if(c>=e.viewTo){var f=rc(a,b,b,-1);f?(e.view=e.view.slice(0,f.index),e.viewTo=f.lineN):pc(a)}else{var g=rc(a,b,b,-1),h=rc(a,c,c+d,1);g&&h?(e.view=e.view.slice(0,g.index).concat(mc(a,g.lineN,h.lineN)).concat(e.view.slice(h.index)),e.viewTo+=d):pc(a)}var i=e.externalMeasured;i&&(c<i.lineN?i.lineN+=d:b<i.lineN+i.size&&(e.externalMeasured=null))}function oc(a,b,c){a.curOp.viewChanged=!0;var d=a.display,e=a.display.externalMeasured;if(e&&b>=e.lineN&&b<e.lineN+e.size&&(d.externalMeasured=null),!(b<d.viewFrom||b>=d.viewTo)){var f=d.view[qc(a,b)];if(null!=f.node){var g=f.changes||(f.changes=[]);-1==kg(g,c)&&g.push(c)}}}function pc(a){a.display.viewFrom=a.display.viewTo=a.doc.first,a.display.view=[],a.display.viewOffset=0}function qc(a,b){if(b>=a.display.viewTo)return null;if(b-=a.display.viewFrom,0>b)return null;for(var c=a.display.view,d=0;d<c.length;d++)if(b-=c[d].size,0>b)return d}function rc(a,b,c,d){var f,e=qc(a,b),g=a.display.view;if(!x||c==a.doc.first+a.doc.size)return{index:e,lineN:c};for(var h=0,i=a.display.viewFrom;e>h;h++)i+=g[h].size;if(i!=b){if(d>0){if(e==g.length-1)return null;f=i+g[e].size-b,e++}else f=i-b;b+=f,c+=f}for(;ze(a.doc,c)!=c;){if(e==(0>d?0:g.length-1))return null;c+=d*g[e-(0>d?1:0)].size,e+=d}return{index:e,lineN:c}}function sc(a,b,c){var d=a.display,e=d.view;0==e.length||b>=d.viewTo||c<=d.viewFrom?(d.view=mc(a,b,c),d.viewFrom=b):(d.viewFrom>b?d.view=mc(a,b,d.viewFrom).concat(d.view):d.viewFrom<b&&(d.view=d.view.slice(qc(a,b))),d.viewFrom=b,d.viewTo<c?d.view=d.view.concat(mc(a,d.viewTo,c)):d.viewTo>c&&(d.view=d.view.slice(0,qc(a,c)))),d.viewTo=c}function tc(a){for(var b=a.display.view,c=0,d=0;d<b.length;d++){var e=b[d];e.hidden||e.node&&!e.changes||++c}return c}function uc(a){function e(){b.activeTouch&&(c=setTimeout(function(){b.activeTouch=null},1e3),d=b.activeTouch,d.end=+new Date)}function h(a){if(1!=a.touches.length)return!1;var b=a.touches[0];return b.radiusX<=1&&b.radiusY<=1}function i(a,b){if(null==b.left)return!0;var c=b.left-a.left,d=b.top-a.top;return c*c+d*d>400}var b=a.display;Of(b.scroller,"mousedown",ic(a,zc)),f&&11>g?Of(b.scroller,"dblclick",ic(a,function(b){if(!Wf(a,b)){var c=yc(a,b);if(c&&!Gc(a,b)&&!xc(a.display,b)){If(b);var d=a.findWordAt(c);Va(a.doc,d.anchor,d.head)}}})):Of(b.scroller,"dblclick",function(b){Wf(a,b)||If(b)}),v||Of(b.scroller,"contextmenu",function(b){ed(a,b)});var c,d={end:0};Of(b.scroller,"touchstart",function(e){if(!Wf(a,e)&&!h(e)){clearTimeout(c);var f=+new Date;b.activeTouch={start:f,moved:!1,prev:f-d.end<=300?d:null},1==e.touches.length&&(b.activeTouch.left=e.touches[0].pageX,b.activeTouch.top=e.touches[0].pageY)}}),Of(b.scroller,"touchmove",function(){b.activeTouch&&(b.activeTouch.moved=!0)}),Of(b.scroller,"touchend",function(c){var d=b.activeTouch;if(d&&!xc(b,c)&&null!=d.left&&!d.moved&&new Date-d.start<300){var g,f=a.coordsChar(b.activeTouch,"page");g=!d.prev||i(d,d.prev)?new Ma(f,f):!d.prev.prev||i(d,d.prev.prev)?a.findWordAt(f):new Ma(ra(f.line,0),Qa(a.doc,ra(f.line+1,0))),a.setSelection(g.anchor,g.head),a.focus(),If(c)}e()}),Of(b.scroller,"touchcancel",e),Of(b.scroller,"scroll",function(){b.scroller.clientHeight&&(Mc(a,b.scroller.scrollTop),Nc(a,b.scroller.scrollLeft,!0),Sf(a,"scroll",a))}),Of(b.scroller,"mousewheel",function(b){Rc(a,b)}),Of(b.scroller,"DOMMouseScroll",function(b){Rc(a,b)}),Of(b.wrapper,"scroll",function(){b.wrapper.scrollTop=b.wrapper.scrollLeft=0}),b.dragFunctions={enter:function(b){Wf(a,b)||Lf(b)},over:function(b){Wf(a,b)||(Kc(a,b),Lf(b))},start:function(b){Jc(a,b)},drop:ic(a,Ic),leave:function(b){Wf(a,b)||Lc(a)}};var j=b.input.getField();Of(j,"keyup",function(b){_c.call(a,b)}),Of(j,"keydown",ic(a,Zc)),Of(j,"keypress",ic(a,ad)),Of(j,"focus",qg(cd,a)),Of(j,"blur",qg(dd,a))}function vc(a,b,c){var d=c&&c!=y.Init;if(!b!=!d){var e=a.display.dragFunctions,f=b?Of:Rf;f(a.display.scroller,"dragstart",e.start),f(a.display.scroller,"dragenter",e.enter),f(a.display.scroller,"dragover",e.over),f(a.display.scroller,"dragleave",e.leave),f(a.display.scroller,"drop",e.drop)}}function wc(a){var b=a.display;(b.lastWrapHeight!=b.wrapper.clientHeight||b.lastWrapWidth!=b.wrapper.clientWidth)&&(b.cachedCharWidth=b.cachedTextHeight=b.cachedPaddingH=null,b.scrollbarsClipped=!1,a.setSize())}function xc(a,b){for(var c=Mf(b);c!=a.wrapper;c=c.parentNode)if(!c||1==c.nodeType&&"true"==c.getAttribute("cm-ignore-events")||c.parentNode==a.sizer&&c!=a.mover)return!0}function yc(a,b,c,d){var e=a.display;if(!c&&"true"==Mf(b).getAttribute("cm-not-content"))return null;var f,g,h=e.lineSpace.getBoundingClientRect();try{f=b.clientX-h.left,g=b.clientY-h.top}catch(b){return null}var j,i=Tb(a,f,g);if(d&&1==i.xRel&&(j=lf(a.doc,i.line).text).length==i.ch){var k=eg(j,j.length,a.options.tabSize)-j.length;i=ra(i.line,Math.max(0,Math.round((f-sb(a.display).left)/Xb(a.display))-k))}return i}function zc(a){var b=this,c=b.display;if(!(Wf(b,a)||c.activeTouch&&c.input.supportsTouch())){if(c.shift=a.shiftKey,xc(c,a))return void(h||(c.scroller.draggable=!1,setTimeout(function(){c.scroller.draggable=!0},100)));if(!Gc(b,a)){var d=yc(b,a);switch(window.focus(),Nf(a)){case 1:b.state.selectingText?b.state.selectingText(a):d?Cc(b,a,d):Mf(a)==c.scroller&&If(a);break;case 2:h&&(b.state.lastMiddleDown=+new Date),d&&Va(b.doc,d),setTimeout(function(){c.input.focus()},20),If(a);break;case 3:v?ed(b,a):bd(b)}}}}function Cc(a,b,c){f?setTimeout(qg(wa,a),0):a.curOp.focus=Cg();var e,d=+new Date;Bc&&Bc.time>d-400&&0==sa(Bc.pos,c)?e="triple":Ac&&Ac.time>d-400&&0==sa(Ac.pos,c)?(e="double",Bc={time:d,pos:c}):(e="single",Ac={time:d,pos:c});var i,g=a.doc.sel,h=q?b.metaKey:b.ctrlKey;a.options.dragDrop&&Lg&&!a.isReadOnly()&&"single"==e&&(i=g.contains(c))>-1&&(sa((i=g.ranges[i]).from(),c)<0||c.xRel>0)&&(sa(i.to(),c)>0||c.xRel<0)?Dc(a,b,c,h):Ec(a,b,c,e,h)}function Dc(a,b,c,d){var e=a.display,i=+new Date,j=ic(a,function(k){h&&(e.scroller.draggable=!1),a.state.draggingText=!1,Rf(document,"mouseup",j),Rf(e.scroller,"drop",j),Math.abs(b.clientX-k.clientX)+Math.abs(b.clientY-k.clientY)<10&&(If(k),!d&&+new Date-200<i&&Va(a.doc,c),h||f&&9==g?setTimeout(function(){document.body.focus(),e.input.focus()},20):e.input.focus())});h&&(e.scroller.draggable=!0),a.state.draggingText=j,j.copy=q?b.altKey:b.ctrlKey,e.scroller.dragDrop&&e.scroller.dragDrop(),Of(document,"mouseup",j),Of(e.scroller,"drop",j)}function Ec(a,b,c,d,e){function o(b){if(0!=sa(n,b))if(n=b,"rect"==d){for(var e=[],f=a.options.tabSize,k=eg(lf(g,c.line).text,c.ch,f),l=eg(lf(g,b.line).text,b.ch,f),m=Math.min(k,l),o=Math.max(k,l),p=Math.min(c.line,b.line),q=Math.min(a.lastLine(),Math.max(c.line,b.line));q>=p;p++){var r=lf(g,p).text,s=fg(r,m,f);m==o?e.push(new Ma(ra(p,s),ra(p,s))):r.length>s&&e.push(new Ma(ra(p,s),ra(p,fg(r,o,f))))}e.length||e.push(new Ma(c,c)),_a(g,Na(j.ranges.slice(0,i).concat(e),i),{origin:"*mouse",scroll:!1}),a.scrollIntoView(b)}else{var t=h,u=t.anchor,v=b;if("single"!=d){if("double"==d)var w=a.findWordAt(b);else var w=new Ma(ra(b.line,0),Qa(g,ra(b.line+1,0)));sa(w.anchor,u)>0?(v=w.head,u=va(t.from(),w.anchor)):(v=w.anchor,u=ua(t.to(),w.head))}var e=j.ranges.slice(0);e[i]=new Ma(Qa(g,u),v),_a(g,Na(e,i),bg)}}function s(b){var c=++q,e=yc(a,b,!0,"rect"==d);if(e)if(0!=sa(e,n)){a.curOp.focus=Cg(),o(e);var h=S(f,g);(e.line>=h.to||e.line<h.from)&&setTimeout(ic(a,function(){q==c&&s(b)}),150)}else{var i=b.clientY<p.top?-20:b.clientY>p.bottom?20:0;i&&setTimeout(ic(a,function(){q==c&&(f.scroller.scrollTop+=i,s(b))}),50)}}function t(b){a.state.selectingText=!1,q=1/0,If(b),f.input.focus(),Rf(document,"mousemove",u),Rf(document,"mouseup",v),g.history.lastSelOrigin=null}var f=a.display,g=a.doc;If(b);var h,i,j=g.sel,k=j.ranges;if(e&&!b.shiftKey?(i=g.sel.contains(c),h=i>-1?k[i]:new Ma(c,c)):(h=g.sel.primary(),i=g.sel.primIndex),r?b.shiftKey&&b.metaKey:b.altKey)d="rect",e||(h=new Ma(c,c)),c=yc(a,b,!0,!0),i=-1;else if("double"==d){var l=a.findWordAt(c);h=a.display.shift||g.extend?Ua(g,h,l.anchor,l.head):l}else if("triple"==d){var m=new Ma(ra(c.line,0),Qa(g,ra(c.line+1,0)));h=a.display.shift||g.extend?Ua(g,h,m.anchor,m.head):m}else h=Ua(g,h,c);e?-1==i?(i=k.length,_a(g,Na(k.concat([h]),i),{scroll:!1,origin:"*mouse"})):k.length>1&&k[i].empty()&&"single"==d&&!b.shiftKey?(_a(g,Na(k.slice(0,i).concat(k.slice(i+1)),0),{scroll:!1,origin:"*mouse"}),j=g.sel):Xa(g,i,h,bg):(i=0,_a(g,new La([h],0),bg),j=g.sel);var n=c,p=f.wrapper.getBoundingClientRect(),q=0,u=ic(a,function(a){Nf(a)?s(a):t(a)}),v=ic(a,t);a.state.selectingText=v,Of(document,"mousemove",u),Of(document,"mouseup",v)}function Fc(a,b,c,d){try{var e=b.clientX,f=b.clientY}catch(b){return!1}if(e>=Math.floor(a.display.gutters.getBoundingClientRect().right))return!1;d&&If(b);var g=a.display,h=g.lineDiv.getBoundingClientRect();if(f>h.bottom||!Yf(a,c))return Kf(b);f-=h.top-g.viewOffset;for(var i=0;i<a.options.gutters.length;++i){var j=g.gutters.childNodes[i];if(j&&j.getBoundingClientRect().right>=e){var k=qf(a.doc,f),l=a.options.gutters[i];return Sf(a,c,a,k,l,b),Kf(b)}}}function Gc(a,b){return Fc(a,b,"gutterClick",!0)}function Ic(a){var b=this;if(Lc(b),!Wf(b,a)&&!xc(b.display,a)){If(a),f&&(Hc=+new Date);var c=yc(b,a,!0),d=a.dataTransfer.files;if(c&&!b.isReadOnly())if(d&&d.length&&window.FileReader&&window.File)for(var e=d.length,g=Array(e),h=0,i=function(a,d){if(!b.options.allowDropFileTypes||-1!=kg(b.options.allowDropFileTypes,a.type)){var f=new FileReader;f.onload=ic(b,function(){var a=f.result;if(/[\x00-\x08\x0e-\x1f]{2}/.test(a)&&(a=""),g[d]=a,++h==e){c=Qa(b.doc,c);var i={from:c,to:c,text:b.doc.splitLines(g.join(b.doc.lineSeparator())),origin:"paste"};md(b.doc,i),$a(b.doc,Oa(c,gd(i)))}}),f.readAsText(a)}},j=0;e>j;++j)i(d[j],j);else{if(b.state.draggingText&&b.doc.sel.contains(c)>-1)return b.state.draggingText(a),void setTimeout(function(){b.display.input.focus()},20);try{var g=a.dataTransfer.getData("Text");if(g){if(b.state.draggingText&&!b.state.draggingText.copy)var k=b.listSelections();if(ab(b.doc,Oa(c,c)),k)for(var j=0;j<k.length;++j)sd(b.doc,"",k[j].anchor,k[j].head,"drag");b.replaceSelection(g,"around","paste"),b.display.input.focus()}}catch(a){}}}}function Jc(a,b){if(f&&(!a.state.draggingText||+new Date-Hc<100))return void Lf(b);if(!Wf(a,b)&&!xc(a.display,b)&&(b.dataTransfer.setData("Text",a.getSelection()),b.dataTransfer.effectAllowed="copyMove",b.dataTransfer.setDragImage&&!l)){var c=xg("img",null,null,"position: fixed; left: 0; top: 0;");c.src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==",k&&(c.width=c.height=1,a.display.wrapper.appendChild(c),c._top=c.offsetTop),b.dataTransfer.setDragImage(c,0,0),k&&c.parentNode.removeChild(c)}}function Kc(a,b){var c=yc(a,b);if(c){var d=document.createDocumentFragment();jb(a,c,d),a.display.dragCursor||(a.display.dragCursor=xg("div",null,"CodeMirror-cursors CodeMirror-dragcursors"),a.display.lineSpace.insertBefore(a.display.dragCursor,a.display.cursorDiv)),Ag(a.display.dragCursor,d)}}function Lc(a){a.display.dragCursor&&(a.display.lineSpace.removeChild(a.display.dragCursor),a.display.dragCursor=null)}function Mc(a,b){Math.abs(a.doc.scrollTop-b)<2||(a.doc.scrollTop=b,c||_(a,{top:b}),a.display.scroller.scrollTop!=b&&(a.display.scroller.scrollTop=b),a.display.scrollbars.setScrollTop(b),c&&_(a),mb(a,100))}function Nc(a,b,c){(c?b==a.doc.scrollLeft:Math.abs(a.doc.scrollLeft-b)<2)||(b=Math.min(b,a.display.scroller.scrollWidth-a.display.scroller.clientWidth),a.doc.scrollLeft=b,T(a),a.display.scroller.scrollLeft!=b&&(a.display.scroller.scrollLeft=b),a.display.scrollbars.setScrollLeft(b))}function Rc(a,b){var d=Qc(b),e=d.x,f=d.y,g=a.display,i=g.scroller,j=i.scrollWidth>i.clientWidth,l=i.scrollHeight>i.clientHeight;if(e&&j||f&&l){if(f&&q&&h)a:for(var m=b.target,n=g.view;m!=i;m=m.parentNode)for(var o=0;o<n.length;o++)if(n[o].node==m){a.display.currentWheelTarget=m;break a}if(e&&!c&&!k&&null!=Pc)return f&&l&&Mc(a,Math.max(0,Math.min(i.scrollTop+f*Pc,i.scrollHeight-i.clientHeight))),Nc(a,Math.max(0,Math.min(i.scrollLeft+e*Pc,i.scrollWidth-i.clientWidth))),(!f||f&&l)&&If(b),void(g.wheelStartX=null);if(f&&null!=Pc){var p=f*Pc,r=a.doc.scrollTop,s=r+g.wrapper.clientHeight;0>p?r=Math.max(0,r+p-50):s=Math.min(a.doc.height,s+p+50),_(a,{top:r,bottom:s})}20>Oc&&(null==g.wheelStartX?(g.wheelStartX=i.scrollLeft,g.wheelStartY=i.scrollTop,g.wheelDX=e,g.wheelDY=f,setTimeout(function(){if(null!=g.wheelStartX){var a=i.scrollLeft-g.wheelStartX,b=i.scrollTop-g.wheelStartY,c=b&&g.wheelDY&&b/g.wheelDY||a&&g.wheelDX&&a/g.wheelDX;g.wheelStartX=g.wheelStartY=null,c&&(Pc=(Pc*Oc+c)/(Oc+1),++Oc)}},200)):(g.wheelDX+=e,g.wheelDY+=f))}}function Sc(a,b,c){if("string"==typeof b&&(b=Qd[b],!b))return!1;a.display.input.ensurePolled();var d=a.display.shift,e=!1;try{a.isReadOnly()&&(a.state.suppressEdits=!0),c&&(a.display.shift=!1),e=b(a)!=_f}finally{a.display.shift=d,a.state.suppressEdits=!1}return e}function Tc(a,b,c){for(var d=0;d<a.state.keyMaps.length;d++){var e=Td(b,a.state.keyMaps[d],c,a);if(e)return e}return a.options.extraKeys&&Td(b,a.options.extraKeys,c,a)||Td(b,a.options.keyMap,c,a)}function Vc(a,b,c,d){var e=a.state.keySeq;if(e){if(Ud(b))return"handled";Uc.set(50,function(){a.state.keySeq==e&&(a.state.keySeq=null,a.display.input.reset())}),b=e+" "+b}var f=Tc(a,b,d);return"multi"==f&&(a.state.keySeq=b),"handled"==f&&Uf(a,"keyHandled",a,b,c),("handled"==f||"multi"==f)&&(If(c),lb(a)),e&&!f&&/\'$/.test(b)?(If(c),!0):!!f}function Wc(a,b){var c=Vd(b,!0);return c?b.shiftKey&&!a.state.keySeq?Vc(a,"Shift-"+c,b,function(b){return Sc(a,b,!0)})||Vc(a,c,b,function(b){return("string"==typeof b?/^go[A-Z]/.test(b):b.motion)?Sc(a,b):void 0}):Vc(a,c,b,function(b){return Sc(a,b)}):!1}function Xc(a,b,c){return Vc(a,"'"+c+"'",b,function(b){return Sc(a,b,!0)})}function Zc(a){var b=this;if(b.curOp.focus=Cg(),!Wf(b,a)){f&&11>g&&27==a.keyCode&&(a.returnValue=!1);var c=a.keyCode;b.display.shift=16==c||a.shiftKey;var d=Wc(b,a);k&&(Yc=d?c:null,!d&&88==c&&!Sg&&(q?a.metaKey:a.ctrlKey)&&b.replaceSelection("",null,"cut")),18!=c||/\bCodeMirror-crosshair\b/.test(b.display.lineDiv.className)||$c(b)}}function $c(a){function c(a){18!=a.keyCode&&a.altKey||(Eg(b,"CodeMirror-crosshair"),Rf(document,"keyup",c),Rf(document,"mouseover",c))}var b=a.display.lineDiv;Fg(b,"CodeMirror-crosshair"),Of(document,"keyup",c),Of(document,"mouseover",c)}function _c(a){16==a.keyCode&&(this.doc.sel.shift=!1),Wf(this,a)}function ad(a){var b=this;if(!(xc(b.display,a)||Wf(b,a)||a.ctrlKey&&!a.altKey||q&&a.metaKey)){var c=a.keyCode,d=a.charCode;if(k&&c==Yc)return Yc=null,void If(a);if(!k||a.which&&!(a.which<10)||!Wc(b,a)){var e=String.fromCharCode(null==d?c:d);Xc(b,a,e)||b.display.input.onKeyPress(a)}}}function bd(a){a.state.delayingBlurEvent=!0,setTimeout(function(){a.state.delayingBlurEvent&&(a.state.delayingBlurEvent=!1,dd(a))},100)}function cd(a){a.state.delayingBlurEvent&&(a.state.delayingBlurEvent=!1),"nocursor"!=a.options.readOnly&&(a.state.focused||(Sf(a,"focus",a),a.state.focused=!0,Fg(a.display.wrapper,"CodeMirror-focused"),a.curOp||a.display.selForContextMenu==a.doc.sel||(a.display.input.reset(),h&&setTimeout(function(){a.display.input.reset(!0)},20)),a.display.input.receivedFocus()),lb(a))}function dd(a){a.state.delayingBlurEvent||(a.state.focused&&(Sf(a,"blur",a),a.state.focused=!1,Eg(a.display.wrapper,"CodeMirror-focused")),clearInterval(a.display.blinker),setTimeout(function(){a.state.focused||(a.display.shift=!1)},150))}function ed(a,b){xc(a.display,b)||fd(a,b)||Wf(a,b,"contextmenu")||a.display.input.onContextMenu(b)}function fd(a,b){return Yf(a,"gutterContextMenu")?Fc(a,b,"gutterContextMenu",!1):!1}function hd(a,b){if(sa(a,b.from)<0)return a;if(sa(a,b.to)<=0)return gd(b);var c=a.line+b.text.length-(b.to.line-b.from.line)-1,d=a.ch;return a.line==b.to.line&&(d+=gd(b).ch-b.to.ch),ra(c,d)}function id(a,b){for(var c=[],d=0;d<a.sel.ranges.length;d++){var e=a.sel.ranges[d];c.push(new Ma(hd(e.anchor,b),hd(e.head,b)))}return Na(c,a.sel.primIndex)}function jd(a,b,c){return a.line==b.line?ra(c.line,a.ch-b.ch+c.ch):ra(c.line+(a.line-b.line),a.ch)}function kd(a,b,c){for(var d=[],e=ra(a.first,0),f=e,g=0;g<b.length;g++){var h=b[g],i=jd(h.from,e,f),j=jd(gd(h),e,f);if(e=h.to,f=j,"around"==c){var k=a.sel.ranges[g],l=sa(k.head,k.anchor)<0;d[g]=new Ma(l?j:i,l?i:j)}else d[g]=new Ma(i,i)}return new La(d,a.sel.primIndex)}function ld(a,b,c){var d={canceled:!1,from:b.from,to:b.to,text:b.text,origin:b.origin,cancel:function(){this.canceled=!0}};return c&&(d.update=function(b,c,d,e){b&&(this.from=Qa(a,b)),c&&(this.to=Qa(a,c)),d&&(this.text=d),void 0!==e&&(this.origin=e)}),Sf(a,"beforeChange",a,d),a.cm&&Sf(a.cm,"beforeChange",a.cm,d),d.canceled?null:{from:d.from,to:d.to,text:d.text,origin:d.origin}}function md(a,b,c){if(a.cm){if(!a.cm.curOp)return ic(a.cm,md)(a,b,c);if(a.cm.state.suppressEdits)return}if(!(Yf(a,"beforeChange")||a.cm&&Yf(a.cm,"beforeChange"))||(b=ld(a,b,!0))){var d=w&&!c&&ne(a,b.from,b.to);if(d)for(var e=d.length-1;e>=0;--e)nd(a,{from:d[e].from,to:d[e].to,text:e?[""]:b.text});else nd(a,b)}}function nd(a,b){if(1!=b.text.length||""!=b.text[0]||0!=sa(b.from,b.to)){var c=id(a,b);xf(a,b,c,a.cm?a.cm.curOp.id:NaN),qd(a,b,c,ke(a,b));var d=[];jf(a,function(a,c){c||-1!=kg(d,a.history)||(Hf(a.history,b),d.push(a.history)),qd(a,b,null,ke(a,b))})}}function od(a,b,c){if(!a.cm||!a.cm.state.suppressEdits||c){for(var e,d=a.history,f=a.sel,g="undo"==b?d.done:d.undone,h="undo"==b?d.undone:d.done,i=0;i<g.length&&(e=g[i],c?!e.ranges||e.equals(a.sel):e.ranges);i++);if(i!=g.length){for(d.lastOrigin=d.lastSelOrigin=null;e=g.pop(),e.ranges;){if(Af(e,h),c&&!e.equals(a.sel))return void _a(a,e,{clearRedo:!1});f=e}var j=[];Af(f,h),h.push({changes:j,generation:d.generation}),d.generation=e.generation||++d.maxGeneration;for(var k=Yf(a,"beforeChange")||a.cm&&Yf(a.cm,"beforeChange"),i=e.changes.length-1;i>=0;--i){var l=e.changes[i];if(l.origin=b,k&&!ld(a,l,!1))return void(g.length=0);j.push(uf(a,l));var m=i?id(a,l):ig(g);qd(a,l,m,me(a,l)),!i&&a.cm&&a.cm.scrollIntoView({from:l.from,to:gd(l)});var n=[];jf(a,function(a,b){b||-1!=kg(n,a.history)||(Hf(a.history,l),n.push(a.history)),qd(a,l,null,me(a,l))})}}}}function pd(a,b){if(0!=b&&(a.first+=b,a.sel=new La(lg(a.sel.ranges,function(a){return new Ma(ra(a.anchor.line+b,a.anchor.ch),ra(a.head.line+b,a.head.ch))}),a.sel.primIndex),a.cm)){nc(a.cm,a.first,a.first-b,b);for(var c=a.cm.display,d=c.viewFrom;d<c.viewTo;d++)oc(a.cm,d,"gutter")}}function qd(a,b,c,d){if(a.cm&&!a.cm.curOp)return ic(a.cm,qd)(a,b,c,d);if(b.to.line<a.first)return void pd(a,b.text.length-1-(b.to.line-b.from.line));if(!(b.from.line>a.lastLine())){if(b.from.line<a.first){var e=b.text.length-1-(a.first-b.from.line);pd(a,e),b={from:ra(a.first,0),to:ra(b.to.line+e,b.to.ch),text:[ig(b.text)],origin:b.origin}}var f=a.lastLine();b.to.line>f&&(b={from:b.from,to:ra(f,lf(a,f).text.length),text:[b.text[0]],origin:b.origin}),b.removed=mf(a,b.from,b.to),c||(c=id(a,b)),a.cm?rd(a.cm,b,d):bf(a,b,d),ab(a,c,ag)}}function rd(a,b,c){var d=a.doc,e=a.display,f=b.from,g=b.to,h=!1,i=f.line;a.options.lineWrapping||(i=pf(xe(lf(d,f.line))),d.iter(i,g.line+1,function(a){return a==e.maxLine?(h=!0,!0):void 0})),d.sel.contains(b.from,b.to)>-1&&Xf(a),bf(d,b,c,D(a)),a.options.lineWrapping||(d.iter(i,f.line+b.text.length,function(a){var b=J(a);b>e.maxLineLength&&(e.maxLine=a,e.maxLineLength=b,e.maxLineChanged=!0,h=!1)}),h&&(a.curOp.updateMaxLine=!0)),d.frontier=Math.min(d.frontier,f.line),mb(a,400);var j=b.text.length-(g.line-f.line)-1;b.full?nc(a):f.line!=g.line||1!=b.text.length||af(a.doc,b)?nc(a,f.line,g.line+1,j):oc(a,f.line,"text");var k=Yf(a,"changes"),l=Yf(a,"change");if(l||k){var m={from:f,to:g,text:b.text,removed:b.removed,origin:b.origin};l&&Uf(a,"change",a,m),k&&(a.curOp.changeObjs||(a.curOp.changeObjs=[])).push(m)}a.display.selForContextMenu=null}function sd(a,b,c,d,e){if(d||(d=c),sa(d,c)<0){var f=d;d=c,c=f}"string"==typeof b&&(b=a.splitLines(b)),md(a,{from:c,to:d,text:b,origin:e})}function td(a,b){if(!Wf(a,"scrollCursorIntoView")){var c=a.display,d=c.sizer.getBoundingClientRect(),e=null;if(b.top+d.top<0?e=!0:b.bottom+d.top>(window.innerHeight||document.documentElement.clientHeight)&&(e=!1),null!=e&&!n){var f=xg("div","\u200b",null,"position: absolute; top: "+(b.top-c.viewOffset-qb(a.display))+"px; height: "+(b.bottom-b.top+tb(a)+c.barHeight)+"px; left: "+b.left+"px; width: 2px;");a.display.lineSpace.appendChild(f),f.scrollIntoView(e),a.display.lineSpace.removeChild(f)}}}function ud(a,b,c,d){null==d&&(d=0);for(var e=0;5>e;e++){var f=!1,g=Qb(a,b),h=c&&c!=b?Qb(a,c):g,i=wd(a,Math.min(g.left,h.left),Math.min(g.top,h.top)-d,Math.max(g.left,h.left),Math.max(g.bottom,h.bottom)+d),j=a.doc.scrollTop,k=a.doc.scrollLeft;if(null!=i.scrollTop&&(Mc(a,i.scrollTop),Math.abs(a.doc.scrollTop-j)>1&&(f=!0)),null!=i.scrollLeft&&(Nc(a,i.scrollLeft),Math.abs(a.doc.scrollLeft-k)>1&&(f=!0)),!f)break}return g}function vd(a,b,c,d,e){var f=wd(a,b,c,d,e);null!=f.scrollTop&&Mc(a,f.scrollTop),null!=f.scrollLeft&&Nc(a,f.scrollLeft)}function wd(a,b,c,d,e){var f=a.display,g=Wb(a.display);0>c&&(c=0);var h=a.curOp&&null!=a.curOp.scrollTop?a.curOp.scrollTop:f.scroller.scrollTop,i=vb(a),j={};e-c>i&&(e=c+i);var k=a.doc.height+rb(f),l=g>c,m=e>k-g;if(h>c)j.scrollTop=l?0:c;else if(e>h+i){var n=Math.min(c,(m?k:e)-i);n!=h&&(j.scrollTop=n)}var o=a.curOp&&null!=a.curOp.scrollLeft?a.curOp.scrollLeft:f.scroller.scrollLeft,p=ub(a)-(a.options.fixedGutter?f.gutters.offsetWidth:0),q=d-b>p;
-return q&&(d=b+p),10>b?j.scrollLeft=0:o>b?j.scrollLeft=Math.max(0,b-(q?0:10)):d>p+o-3&&(j.scrollLeft=d+(q?0:10)-p),j}function xd(a,b,c){(null!=b||null!=c)&&zd(a),null!=b&&(a.curOp.scrollLeft=(null==a.curOp.scrollLeft?a.doc.scrollLeft:a.curOp.scrollLeft)+b),null!=c&&(a.curOp.scrollTop=(null==a.curOp.scrollTop?a.doc.scrollTop:a.curOp.scrollTop)+c)}function yd(a){zd(a);var b=a.getCursor(),c=b,d=b;a.options.lineWrapping||(c=b.ch?ra(b.line,b.ch-1):b,d=ra(b.line,b.ch+1)),a.curOp.scrollToPos={from:c,to:d,margin:a.options.cursorScrollMargin,isCursor:!0}}function zd(a){var b=a.curOp.scrollToPos;if(b){a.curOp.scrollToPos=null;var c=Rb(a,b.from),d=Rb(a,b.to),e=wd(a,Math.min(c.left,d.left),Math.min(c.top,d.top)-b.margin,Math.max(c.right,d.right),Math.max(c.bottom,d.bottom)+b.margin);a.scrollTo(e.scrollLeft,e.scrollTop)}}function Ad(a,b,c,d){var f,e=a.doc;null==c&&(c="add"),"smart"==c&&(e.mode.indent?f=pb(a,b):c="prev");var g=a.options.tabSize,h=lf(e,b),i=eg(h.text,null,g);h.stateAfter&&(h.stateAfter=null);var k,j=h.text.match(/^\s*/)[0];if(d||/\S/.test(h.text)){if("smart"==c&&(k=e.mode.indent(f,h.text.slice(j.length),h.text),k==_f||k>150)){if(!d)return;c="prev"}}else k=0,c="not";"prev"==c?k=b>e.first?eg(lf(e,b-1).text,null,g):0:"add"==c?k=i+a.options.indentUnit:"subtract"==c?k=i-a.options.indentUnit:"number"==typeof c&&(k=i+c),k=Math.max(0,k);var l="",m=0;if(a.options.indentWithTabs)for(var n=Math.floor(k/g);n;--n)m+=g,l+="	";if(k>m&&(l+=hg(k-m)),l!=j)return sd(e,l,ra(b,0),ra(b,j.length),"+input"),h.stateAfter=null,!0;for(var n=0;n<e.sel.ranges.length;n++){var o=e.sel.ranges[n];if(o.head.line==b&&o.head.ch<j.length){var m=ra(b,j.length);Xa(e,n,new Ma(m,m));break}}}function Bd(a,b,c,d){var e=b,f=b;return"number"==typeof b?f=lf(a,Pa(a,b)):e=pf(b),null==e?null:(d(f,e)&&a.cm&&oc(a.cm,e,c),f)}function Cd(a,b){for(var c=a.doc.sel.ranges,d=[],e=0;e<c.length;e++){for(var f=b(c[e]);d.length&&sa(f.from,ig(d).to)<=0;){var g=d.pop();if(sa(g.from,f.from)<0){f.from=g.from;break}}d.push(f)}hc(a,function(){for(var b=d.length-1;b>=0;b--)sd(a.doc,"",d[b].from,d[b].to,"+delete");yd(a)})}function Dd(a,b,c,d,e){function j(){var b=f+c;return b<a.first||b>=a.first+a.size?!1:(f=b,i=lf(a,b))}function k(a){var b=(e?gh:hh)(i,g,c,!0);if(null==b){if(a||!j())return!1;g=e?(0>c?$g:Zg)(i):0>c?i.text.length:0}else g=b;return!0}var f=b.line,g=b.ch,h=c,i=lf(a,f);if("char"==d)k();else if("column"==d)k(!0);else if("word"==d||"group"==d)for(var l=null,m="group"==d,n=a.cm&&a.cm.getHelper(b,"wordChars"),o=!0;!(0>c)||k(!o);o=!1){var p=i.text.charAt(g)||"\n",q=tg(p,n)?"w":m&&"\n"==p?"n":!m||/\s/.test(p)?null:"p";if(!m||o||q||(q="s"),l&&l!=q){0>c&&(c=1,k());break}if(q&&(l=q),c>0&&!k(!o))break}var r=fb(a,ra(f,g),b,h,!0);return sa(b,r)||(r.hitSide=!0),r}function Ed(a,b,c,d){var g,e=a.doc,f=b.left;if("page"==d){var h=Math.min(a.display.wrapper.clientHeight,window.innerHeight||document.documentElement.clientHeight);g=b.top+c*(h-(0>c?1.5:.5)*Wb(a.display))}else"line"==d&&(g=c>0?b.bottom+3:b.top-3);for(;;){var i=Tb(a,f,g);if(!i.outside)break;if(0>c?0>=g:g>=e.height){i.hitSide=!0;break}g+=5*c}return i}function Hd(a,b,c,d){y.defaults[a]=b,c&&(Gd[a]=d?function(a,b,d){d!=Id&&c(a,b,d)}:c)}function Sd(a){for(var c,d,e,f,b=a.split(/-(?!$)/),a=b[b.length-1],g=0;g<b.length-1;g++){var h=b[g];if(/^(cmd|meta|m)$/i.test(h))f=!0;else if(/^a(lt)?$/i.test(h))c=!0;else if(/^(c|ctrl|control)$/i.test(h))d=!0;else{if(!/^s(hift)$/i.test(h))throw new Error("Unrecognized modifier name: "+h);e=!0}}return c&&(a="Alt-"+a),d&&(a="Ctrl-"+a),f&&(a="Cmd-"+a),e&&(a="Shift-"+a),a}function Wd(a){return"string"==typeof a?Rd[a]:a}function $d(a,b,c,d,e){if(d&&d.shared)return ae(a,b,c,d,e);if(a.cm&&!a.cm.curOp)return ic(a.cm,$d)(a,b,c,d,e);var f=new Zd(a,e),g=sa(b,c);if(d&&pg(d,f,!1),g>0||0==g&&f.clearWhenEmpty!==!1)return f;if(f.replacedWith&&(f.collapsed=!0,f.widgetNode=xg("span",[f.replacedWith],"CodeMirror-widget"),d.handleMouseEvents||f.widgetNode.setAttribute("cm-ignore-events","true"),d.insertLeft&&(f.widgetNode.insertLeft=!0)),f.collapsed){if(we(a,b.line,b,c,f)||b.line!=c.line&&we(a,c.line,b,c,f))throw new Error("Inserting collapsed marker partially overlapping an existing one");x=!0}f.addToHistory&&xf(a,{from:b,to:c,origin:"markText"},a.sel,NaN);var j,h=b.line,i=a.cm;if(a.iter(h,c.line+1,function(a){i&&f.collapsed&&!i.options.lineWrapping&&xe(a)==i.display.maxLine&&(j=!0),f.collapsed&&h!=b.line&&of(a,0),he(a,new ee(f,h==b.line?b.ch:null,h==c.line?c.ch:null)),++h}),f.collapsed&&a.iter(b.line,c.line+1,function(b){Be(a,b)&&of(b,0)}),f.clearOnEnter&&Of(f,"beforeCursorEnter",function(){f.clear()}),f.readOnly&&(w=!0,(a.history.done.length||a.history.undone.length)&&a.clearHistory()),f.collapsed&&(f.id=++Yd,f.atomic=!0),i){if(j&&(i.curOp.updateMaxLine=!0),f.collapsed)nc(i,b.line,c.line+1);else 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ra(a,b)},sa=y.cmpPos=function(a,b){return a.line-b.line||a.ch-b.ch},xa=null;Da.prototype=pg({init:function(a){function h(a){if(!Wf(c,a)){if(c.somethingSelected())xa={lineWise:!1,text:c.getSelections()},b.inaccurateSelection&&(b.prevInput="",b.inaccurateSelection=!1,e.value=xa.text.join("\n"),jg(e));else{if(!c.options.lineWiseCopyCut)return;var d=Ba(c);xa={lineWise:!0,text:d.text},"cut"==a.type?c.setSelections(d.ranges,null,ag):(b.prevInput="",e.value=d.text.join("\n"),jg(e))}"cut"==a.type&&(c.state.cutIncoming=!0)}}var b=this,c=this.cm,d=this.wrapper=Ea(),e=this.textarea=d.firstChild;a.wrapper.insertBefore(d,a.wrapper.firstChild),o&&(e.style.width="0px"),Of(e,"input",function(){f&&g>=9&&b.hasSelection&&(b.hasSelection=null),b.poll()}),Of(e,"paste",function(a){Wf(c,a)||za(a,c)||(c.state.pasteIncoming=!0,b.fastPoll())}),Of(e,"cut",h),Of(e,"copy",h),Of(a.scroller,"paste",function(d){xc(a,d)||Wf(c,d)||(c.state.pasteIncoming=!0,b.focus())}),Of(a.lineSpace,"selectstart",function(b){xc(a,b)||If(b)}),Of(e,"compositionstart",function(){var a=c.getCursor("from");b.composing&&b.composing.range.clear(),b.composing={start:a,range:c.markText(a,c.getCursor("to"),{className:"CodeMirror-composing"})}}),Of(e,"compositionend",function(){b.composing&&(b.poll(),b.composing.range.clear(),b.composing=null)})},prepareSelection:function(){var a=this.cm,b=a.display,c=a.doc,d=ib(a);if(a.options.moveInputWithCursor){var e=Qb(a,c.sel.primary().head,"div"),f=b.wrapper.getBoundingClientRect(),g=b.lineDiv.getBoundingClientRect();d.teTop=Math.max(0,Math.min(b.wrapper.clientHeight-10,e.top+g.top-f.top)),d.teLeft=Math.max(0,Math.min(b.wrapper.clientWidth-10,e.left+g.left-f.left))}return d},showSelection:function(a){var b=this.cm,c=b.display;Ag(c.cursorDiv,a.cursors),Ag(c.selectionDiv,a.selection),null!=a.teTop&&(this.wrapper.style.top=a.teTop+"px",this.wrapper.style.left=a.teLeft+"px")},reset:function(a){if(!this.contextMenuPending){var b,c,d=this.cm,e=d.doc;if(d.somethingSelected()){this.prevInput="";var h=e.sel.primary();b=Sg&&(h.to().line-h.from().line>100||(c=d.getSelection()).length>1e3);var i=b?"-":c||d.getSelection();this.textarea.value=i,d.state.focused&&jg(this.textarea),f&&g>=9&&(this.hasSelection=i)}else a||(this.prevInput=this.textarea.value="",f&&g>=9&&(this.hasSelection=null));this.inaccurateSelection=b}},getField:function(){return this.textarea},supportsTouch:function(){return!1},focus:function(){if("nocursor"!=this.cm.options.readOnly&&(!p||Cg()!=this.textarea))try{this.textarea.focus()}catch(a){}},blur:function(){this.textarea.blur()},resetPosition:function(){this.wrapper.style.top=this.wrapper.style.left=0},receivedFocus:function(){this.slowPoll()},slowPoll:function(){var a=this;a.pollingFast||a.polling.set(this.cm.options.pollInterval,function(){a.poll(),a.cm.state.focused&&a.slowPoll()})},fastPoll:function(){function c(){var d=b.poll();d||a?(b.pollingFast=!1,b.slowPoll()):(a=!0,b.polling.set(60,c))}var a=!1,b=this;b.pollingFast=!0,b.polling.set(20,c)},poll:function(){var a=this.cm,b=this.textarea,c=this.prevInput;if(this.contextMenuPending||!a.state.focused||Rg(b)&&!c&&!this.composing||a.isReadOnly()||a.options.disableInput||a.state.keySeq)return!1;var d=b.value;if(d==c&&!a.somethingSelected())return!1;if(f&&g>=9&&this.hasSelection===d||q&&/[\uf700-\uf7ff]/.test(d))return a.display.input.reset(),!1;if(a.doc.sel==a.display.selForContextMenu){var e=d.charCodeAt(0);if(8203!=e||c||(c="\u200b"),8666==e)return this.reset(),this.cm.execCommand("undo")}for(var h=0,i=Math.min(c.length,d.length);i>h&&c.charCodeAt(h)==d.charCodeAt(h);)++h;var j=this;return hc(a,function(){ya(a,d.slice(h),c.length-h,null,j.composing?"*compose":null),d.length>1e3||d.indexOf("\n")>-1?b.value=j.prevInput="":j.prevInput=d,j.composing&&(j.composing.range.clear(),j.composing.range=a.markText(j.composing.start,a.getCursor("to"),{className:"CodeMirror-composing"}))}),!0},ensurePolled:function(){this.pollingFast&&this.poll()&&(this.pollingFast=!1)},onKeyPress:function(){f&&g>=9&&(this.hasSelection=null),this.fastPoll()},onContextMenu:function(a){function q(){if(null!=e.selectionStart){var a=c.somethingSelected(),f="\u200b"+(a?e.value:"");e.value="\u21da",e.value=f,b.prevInput=a?"":"\u200b",e.selectionStart=1,e.selectionEnd=f.length,d.selForContextMenu=c.doc.sel}}function r(){if(b.contextMenuPending=!1,b.wrapper.style.cssText=n,e.style.cssText=m,f&&9>g&&d.scrollbars.setScrollTop(d.scroller.scrollTop=j),null!=e.selectionStart){(!f||f&&9>g)&&q();var a=0,h=function(){d.selForContextMenu==c.doc.sel&&0==e.selectionStart&&e.selectionEnd>0&&"\u200b"==b.prevInput?ic(c,Qd.selectAll)(c):a++<10?d.detectingSelectAll=setTimeout(h,500):d.input.reset()};d.detectingSelectAll=setTimeout(h,200)}}var b=this,c=b.cm,d=c.display,e=b.textarea,i=yc(c,a),j=d.scroller.scrollTop;if(i&&!k){var l=c.options.resetSelectionOnContextMenu;l&&-1==c.doc.sel.contains(i)&&ic(c,_a)(c.doc,Oa(i),ag);var m=e.style.cssText,n=b.wrapper.style.cssText;b.wrapper.style.cssText="position: absolute";var o=b.wrapper.getBoundingClientRect();if(e.style.cssText="position: absolute; width: 30px; height: 30px; top: "+(a.clientY-o.top-5)+"px; left: "+(a.clientX-o.left-5)+"px; z-index: 1000; background: "+(f?"rgba(255, 255, 255, .05)":"transparent")+"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);",h)var p=window.scrollY;if(d.input.focus(),h&&window.scrollTo(null,p),d.input.reset(),c.somethingSelected()||(e.value=b.prevInput=" "),b.contextMenuPending=!0,d.selForContextMenu=c.doc.sel,clearTimeout(d.detectingSelectAll),f&&g>=9&&q(),v){Lf(a);var s=function(){Rf(window,"mouseup",s),setTimeout(r,20)};Of(window,"mouseup",s)}else setTimeout(r,50)}},readOnlyChanged:function(a){a||this.reset()},setUneditable:ng,needsContentAttribute:!1},Da.prototype),Fa.prototype=pg({init:function(a){function e(a){if(!Wf(c,a)){if(c.somethingSelected())xa={lineWise:!1,text:c.getSelections()},"cut"==a.type&&c.replaceSelection("",null,"cut");else{if(!c.options.lineWiseCopyCut)return;var e=Ba(c);xa={lineWise:!0,text:e.text},"cut"==a.type&&c.operation(function(){c.setSelections(e.ranges,0,ag),c.replaceSelection("",null,"cut")})}if(a.clipboardData){a.clipboardData.clearData();var f=xa.text.join("\n");if(a.clipboardData.setData("Text",f),a.clipboardData.getData("Text")==f)return void a.preventDefault()}var g=Ea(),h=g.firstChild;c.display.lineSpace.insertBefore(g,c.display.lineSpace.firstChild),h.value=xa.text.join("\n");var i=document.activeElement;jg(h),setTimeout(function(){c.display.lineSpace.removeChild(g),i.focus(),i==d&&b.showPrimarySelection()},50)}}var b=this,c=b.cm,d=b.div=a.lineDiv;Ca(d,c.options.spellcheck),Of(d,"paste",function(a){Wf(c,a)||za(a,c)||11>=g&&setTimeout(ic(c,function(){b.pollContent()||nc(c)}),20)}),Of(d,"compositionstart",function(a){var d=a.data;if(b.composing={sel:c.doc.sel,data:d,startData:d},d){var e=c.doc.sel.primary(),f=c.getLine(e.head.line),g=f.indexOf(d,Math.max(0,e.head.ch-d.length));g>-1&&g<=e.head.ch&&(b.composing.sel=Oa(ra(e.head.line,g),ra(e.head.line,g+d.length)))}}),Of(d,"compositionupdate",function(a){b.composing.data=a.data}),Of(d,"compositionend",function(a){var c=b.composing;c&&(a.data==c.startData||/\u200b/.test(a.data)||(c.data=a.data),setTimeout(function(){c.handled||b.applyComposition(c),b.composing==c&&(b.composing=null)},50))}),Of(d,"touchstart",function(){b.forceCompositionEnd()}),Of(d,"input",function(){b.composing||(c.isReadOnly()||!b.pollContent())&&hc(b.cm,function(){nc(c)})}),Of(d,"copy",e),Of(d,"cut",e)},prepareSelection:function(){var a=ib(this.cm,!1);return a.focus=this.cm.state.focused,a},showSelection:function(a,b){a&&this.cm.display.view.length&&((a.focus||b)&&this.showPrimarySelection(),this.showMultipleSelections(a))},showPrimarySelection:function(){var a=window.getSelection(),b=this.cm.doc.sel.primary(),d=Ia(this.cm,a.anchorNode,a.anchorOffset),e=Ia(this.cm,a.focusNode,a.focusOffset);if(!d||d.bad||!e||e.bad||0!=sa(va(d,e),b.from())||0!=sa(ua(d,e),b.to())){var f=Ga(this.cm,b.from()),g=Ga(this.cm,b.to());if(f||g){var h=this.cm.display.view,i=a.rangeCount&&a.getRangeAt(0);if(f){if(!g){var j=h[h.length-1].measure,k=j.maps?j.maps[j.maps.length-1]:j.map;g={node:k[k.length-1],offset:k[k.length-2]-k[k.length-3]}}}else f={node:h[0].measure.map[2],offset:0};try{var l=yg(f.node,f.offset,g.offset,g.node)}catch(m){}l&&(!c&&this.cm.state.focused?(a.collapse(f.node,f.offset),l.collapsed||a.addRange(l)):(a.removeAllRanges(),a.addRange(l)),i&&null==a.anchorNode?a.addRange(i):c&&this.startGracePeriod()),this.rememberSelection()}}},startGracePeriod:function(){var a=this;clearTimeout(this.gracePeriod),this.gracePeriod=setTimeout(function(){a.gracePeriod=!1,a.selectionChanged()&&a.cm.operation(function(){a.cm.curOp.selectionChanged=!0})},20)},showMultipleSelections:function(a){Ag(this.cm.display.cursorDiv,a.cursors),Ag(this.cm.display.selectionDiv,a.selection)},rememberSelection:function(){var a=window.getSelection();this.lastAnchorNode=a.anchorNode,this.lastAnchorOffset=a.anchorOffset,this.lastFocusNode=a.focusNode,this.lastFocusOffset=a.focusOffset},selectionInEditor:function(){var a=window.getSelection();if(!a.rangeCount)return!1;var b=a.getRangeAt(0).commonAncestorContainer;return Bg(this.div,b)},focus:function(){"nocursor"!=this.cm.options.readOnly&&this.div.focus()},blur:function(){this.div.blur()},getField:function(){return this.div},supportsTouch:function(){return!0},receivedFocus:function(){function b(){a.cm.state.focused&&(a.pollSelection(),a.polling.set(a.cm.options.pollInterval,b))}var a=this;this.selectionInEditor()?this.pollSelection():hc(this.cm,function(){a.cm.curOp.selectionChanged=!0}),this.polling.set(this.cm.options.pollInterval,b)},selectionChanged:function(){var a=window.getSelection();return a.anchorNode!=this.lastAnchorNode||a.anchorOffset!=this.lastAnchorOffset||a.focusNode!=this.lastFocusNode||a.focusOffset!=this.lastFocusOffset},pollSelection:function(){if(!this.composing&&!this.gracePeriod&&this.selectionChanged()){var a=window.getSelection(),b=this.cm;this.rememberSelection();var c=Ia(b,a.anchorNode,a.anchorOffset),d=Ia(b,a.focusNode,a.focusOffset);c&&d&&hc(b,function(){_a(b.doc,Oa(c,d),ag),(c.bad||d.bad)&&(b.curOp.selectionChanged=!0)})}},pollContent:function(){var a=this.cm,b=a.display,c=a.doc.sel.primary(),d=c.from(),e=c.to();if(d.line<b.viewFrom||e.line>b.viewTo-1)return!1;var f;if(d.line==b.viewFrom||0==(f=qc(a,d.line)))var g=pf(b.view[0].line),h=b.view[0].node;else var g=pf(b.view[f].line),h=b.view[f-1].node.nextSibling;var i=qc(a,e.line);if(i==b.view.length-1)var j=b.viewTo-1,k=b.lineDiv.lastChild;else var j=pf(b.view[i+1].line)-1,k=b.view[i+1].node.previousSibling;for(var l=a.doc.splitLines(Ka(a,h,k,g,j)),m=mf(a.doc,ra(g,0),ra(j,lf(a.doc,j).text.length));l.length>1&&m.length>1;)if(ig(l)==ig(m))l.pop(),m.pop(),j--;else{if(l[0]!=m[0])break;l.shift(),m.shift(),g++}for(var n=0,o=0,p=l[0],q=m[0],r=Math.min(p.length,q.length);r>n&&p.charCodeAt(n)==q.charCodeAt(n);)++n;for(var s=ig(l),t=ig(m),u=Math.min(s.length-(1==l.length?n:0),t.length-(1==m.length?n:0));u>o&&s.charCodeAt(s.length-o-1)==t.charCodeAt(t.length-o-1);)++o;l[l.length-1]=s.slice(0,s.length-o),l[0]=l[0].slice(n);var v=ra(g,n),w=ra(j,m.length?ig(m).length-o:0);return l.length>1||l[0]||sa(v,w)?(sd(a.doc,l,v,w,"+input"),!0):void 0},ensurePolled:function(){this.forceCompositionEnd()},reset:function(){this.forceCompositionEnd()},forceCompositionEnd:function(){this.composing&&!this.composing.handled&&(this.applyComposition(this.composing),this.composing.handled=!0,this.div.blur(),this.div.focus())},applyComposition:function(a){this.cm.isReadOnly()?ic(this.cm,nc)(this.cm):a.data&&a.data!=a.startData&&ic(this.cm,ya)(this.cm,a.data,0,a.sel)},setUneditable:function(a){a.contentEditable="false"},onKeyPress:function(a){a.preventDefault(),this.cm.isReadOnly()||ic(this.cm,ya)(this.cm,String.fromCharCode(null==a.charCode?a.keyCode:a.charCode),0)},readOnlyChanged:function(a){this.div.contentEditable=String("nocursor"!=a)},onContextMenu:ng,resetPosition:ng,needsContentAttribute:!0},Fa.prototype),y.inputStyles={textarea:Da,contenteditable:Fa},La.prototype={primary:function(){return this.ranges[this.primIndex]},equals:function(a){if(a==this)return!0;if(a.primIndex!=this.primIndex||a.ranges.length!=this.ranges.length)return!1;for(var b=0;b<this.ranges.length;b++){var c=this.ranges[b],d=a.ranges[b];if(0!=sa(c.anchor,d.anchor)||0!=sa(c.head,d.head))return!1}return!0},deepCopy:function(){for(var a=[],b=0;b<this.ranges.length;b++)a[b]=new Ma(ta(this.ranges[b].anchor),ta(this.ranges[b].head));return new La(a,this.primIndex)},somethingSelected:function(){for(var a=0;a<this.ranges.length;a++)if(!this.ranges[a].empty())return!0;return!1},contains:function(a,b){b||(b=a);for(var c=0;c<this.ranges.length;c++){var d=this.ranges[c];if(sa(b,d.from())>=0&&sa(a,d.to())<=0)return c}return-1}},Ma.prototype={from:function(){return va(this.anchor,this.head)},to:function(){return ua(this.anchor,this.head)},empty:function(){return this.head.line==this.anchor.line&&this.head.ch==this.anchor.ch}};var Vb,Ac,Bc,Db={left:0,right:0,top:0,bottom:0},Yb=null,Zb=0,Hc=0,Oc=0,Pc=null;f?Pc=-.53:c?Pc=15:j?Pc=-.7:l&&(Pc=-1/3);var Qc=function(a){var b=a.wheelDeltaX,c=a.wheelDeltaY;return null==b&&a.detail&&a.axis==a.HORIZONTAL_AXIS&&(b=a.detail),null==c&&a.detail&&a.axis==a.VERTICAL_AXIS?c=a.detail:null==c&&(c=a.wheelDelta),{x:b,y:c}};y.wheelEventPixels=function(a){var b=Qc(a);return b.x*=Pc,b.y*=Pc,b};var Uc=new dg,Yc=null,gd=y.changeEnd=function(a){return a.text?ra(a.from.line+a.text.length-1,ig(a.text).length+(1==a.text.length?a.from.ch:0)):a.to};y.prototype={constructor:y,focus:function(){window.focus(),this.display.input.focus()},setOption:function(a,b){var c=this.options,d=c[a];(c[a]!=b||"mode"==a)&&(c[a]=b,Gd.hasOwnProperty(a)&&ic(this,Gd[a])(this,b,d))},getOption:function(a){return this.options[a]},getDoc:function(){return this.doc},addKeyMap:function(a,b){this.state.keyMaps[b?"push":"unshift"](Wd(a))},removeKeyMap:function(a){for(var b=this.state.keyMaps,c=0;c<b.length;++c)if(b[c]==a||b[c].name==a)return b.splice(c,1),!0},addOverlay:jc(function(a,b){var c=a.token?a:y.getMode(this.options,a);if(c.startState)throw new Error("Overlays may not be stateful.");mg(this.state.overlays,{mode:c,modeSpec:a,opaque:b&&b.opaque,priority:b&&b.priority||0},function(a){return a.priority}),this.state.modeGen++,nc(this)}),removeOverlay:jc(function(a){for(var b=this.state.overlays,c=0;c<b.length;++c){var d=b[c].modeSpec;if(d==a||"string"==typeof a&&d.name==a)return b.splice(c,1),this.state.modeGen++,void nc(this)}}),indentLine:jc(function(a,b,c){"string"!=typeof b&&"number"!=typeof b&&(b=null==b?this.options.smartIndent?"smart":"prev":b?"add":"subtract"),Sa(this.doc,a)&&Ad(this,a,b,c)}),indentSelection:jc(function(a){for(var b=this.doc.sel.ranges,c=-1,d=0;d<b.length;d++){var e=b[d];if(e.empty())e.head.line>c&&(Ad(this,e.head.line,a,!0),c=e.head.line,d==this.doc.sel.primIndex&&yd(this));else{var f=e.from(),g=e.to(),h=Math.max(c,f.line);c=Math.min(this.lastLine(),g.line-(g.ch?0:1))+1;for(var i=h;c>i;++i)Ad(this,i,a);var j=this.doc.sel.ranges;0==f.ch&&b.length==j.length&&j[d].from().ch>0&&Xa(this.doc,d,new Ma(f,j[d].to()),ag)}}}),getTokenAt:function(a,b){return Ne(this,a,b)},getLineTokens:function(a,b){return Ne(this,ra(a),b,!0)},getTokenTypeAt:function(a){a=Qa(this.doc,a);var f,b=Qe(this,lf(this.doc,a.line)),c=0,d=(b.length-1)/2,e=a.ch;if(0==e)f=b[2];else for(;;){var g=c+d>>1;if((g?b[2*g-1]:0)>=e)d=g;else{if(!(b[2*g+1]<e)){f=b[2*g+2];break}c=g+1}}var h=f?f.indexOf("cm-overlay "):-1;return 0>h?f:0==h?null:f.slice(0,h-1)},getModeAt:function(a){var b=this.doc.mode;return b.innerMode?y.innerMode(b,this.getTokenAt(a).state).mode:b},getHelper:function(a,b){return this.getHelpers(a,b)[0]},getHelpers:function(a,b){var c=[];if(!Nd.hasOwnProperty(b))return c;var d=Nd[b],e=this.getModeAt(a);if("string"==typeof e[b])d[e[b]]&&c.push(d[e[b]]);else if(e[b])for(var f=0;f<e[b].length;f++){var g=d[e[b][f]];g&&c.push(g)}else e.helperType&&d[e.helperType]?c.push(d[e.helperType]):d[e.name]&&c.push(d[e.name]);for(var f=0;f<d._global.length;f++){var h=d._global[f];h.pred(e,this)&&-1==kg(c,h.val)&&c.push(h.val)}return c},getStateAfter:function(a,b){var c=this.doc;return a=Pa(c,null==a?c.first+c.size-1:a),pb(this,a+1,b)},cursorCoords:function(a,b){var c,d=this.doc.sel.primary();return c=null==a?d.head:"object"==typeof a?Qa(this.doc,a):a?d.from():d.to(),Qb(this,c,b||"page")},charCoords:function(a,b){return Pb(this,Qa(this.doc,a),b||"page")},coordsChar:function(a,b){return a=Ob(this,a,b||"page"),Tb(this,a.left,a.top)},lineAtHeight:function(a,b){return a=Ob(this,{top:a,left:0},b||"page").top,qf(this.doc,a+this.display.viewOffset)},heightAtLine:function(a,b){var d,c=!1;if("number"==typeof a){var e=this.doc.first+this.doc.size-1;a<this.doc.first?a=this.doc.first:a>e&&(a=e,c=!0),d=lf(this.doc,a)}else d=a;return Nb(this,d,{top:0,left:0},b||"page").top+(c?this.doc.height-rf(d):0)},defaultTextHeight:function(){return Wb(this.display)},defaultCharWidth:function(){return Xb(this.display)},setGutterMarker:jc(function(a,b,c){return Bd(this.doc,a,"gutter",function(a){var d=a.gutterMarkers||(a.gutterMarkers={});return d[b]=c,!c&&ug(d)&&(a.gutterMarkers=null),!0})}),clearGutter:jc(function(a){var b=this,c=b.doc,d=c.first;c.iter(function(c){c.gutterMarkers&&c.gutterMarkers[a]&&(c.gutterMarkers[a]=null,oc(b,d,"gutter"),ug(c.gutterMarkers)&&(c.gutterMarkers=null)),++d})}),lineInfo:function(a){if("number"==typeof a){if(!Sa(this.doc,a))return null;var b=a;if(a=lf(this.doc,a),!a)return null}else{var b=pf(a);if(null==b)return null}return{line:b,handle:a,text:a.text,gutterMarkers:a.gutterMarkers,textClass:a.textClass,bgClass:a.bgClass,wrapClass:a.wrapClass,widgets:a.widgets}},getViewport:function(){return{from:this.display.viewFrom,to:this.display.viewTo}},addWidget:function(a,b,c,d,e){var f=this.display;a=Qb(this,Qa(this.doc,a));var g=a.bottom,h=a.left;if(b.style.position="absolute",b.setAttribute("cm-ignore-events","true"),this.display.input.setUneditable(b),f.sizer.appendChild(b),"over"==d)g=a.top;else if("above"==d||"near"==d){var i=Math.max(f.wrapper.clientHeight,this.doc.height),j=Math.max(f.sizer.clientWidth,f.lineSpace.clientWidth);("above"==d||a.bottom+b.offsetHeight>i)&&a.top>b.offsetHeight?g=a.top-b.offsetHeight:a.bottom+b.offsetHeight<=i&&(g=a.bottom),h+b.offsetWidth>j&&(h=j-b.offsetWidth)}b.style.top=g+"px",b.style.left=b.style.right="","right"==e?(h=f.sizer.clientWidth-b.offsetWidth,b.style.right="0px"):("left"==e?h=0:"middle"==e&&(h=(f.sizer.clientWidth-b.offsetWidth)/2),b.style.left=h+"px"),c&&vd(this,h,g,h+b.offsetWidth,g+b.offsetHeight)},triggerOnKeyDown:jc(Zc),triggerOnKeyPress:jc(ad),triggerOnKeyUp:_c,execCommand:function(a){return Qd.hasOwnProperty(a)?Qd[a].call(null,this):void 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c=lg(this.sel.ranges,a);Wa(this,Ta(this,c),b)}),setSelections:kc(function(a,b,c){if(a.length){for(var d=0,e=[];d<a.length;d++)e[d]=new Ma(Qa(this,a[d].anchor),Qa(this,a[d].head));null==b&&(b=Math.min(a.length-1,this.sel.primIndex)),_a(this,Na(e,b),c)}}),addSelection:kc(function(a,b,c){var d=this.sel.ranges.slice(0);d.push(new Ma(Qa(this,a),Qa(this,b||a))),_a(this,Na(d,d.length-1),c)}),getSelection:function(a){for(var c,b=this.sel.ranges,d=0;d<b.length;d++){var e=mf(this,b[d].from(),b[d].to());c=c?c.concat(e):e}return a===!1?c:c.join(a||this.lineSeparator())},getSelections:function(a){for(var b=[],c=this.sel.ranges,d=0;d<c.length;d++){var e=mf(this,c[d].from(),c[d].to());a!==!1&&(e=e.join(a||this.lineSeparator())),b[d]=e}return b},replaceSelection:function(a,b,c){for(var d=[],e=0;e<this.sel.ranges.length;e++)d[e]=a;this.replaceSelections(d,b,c||"+input")},replaceSelections:kc(function(a,b,c){for(var d=[],e=this.sel,f=0;f<e.ranges.length;f++){var 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this.history.generation==(a||this.cleanGeneration)},getHistory:function(){return{done:Ef(this.history.done),undone:Ef(this.history.undone)}},setHistory:function(a){var b=this.history=new tf(this.history.maxGeneration);b.done=Ef(a.done.slice(0),null,!0),b.undone=Ef(a.undone.slice(0),null,!0)},addLineClass:kc(function(a,b,c){return Bd(this,a,"gutter"==b?"gutter":"class",function(a){var d="text"==b?"textClass":"background"==b?"bgClass":"gutter"==b?"gutterClass":"wrapClass";if(a[d]){if(Dg(c).test(a[d]))return!1;a[d]+=" "+c}else a[d]=c;return!0})}),removeLineClass:kc(function(a,b,c){return Bd(this,a,"gutter"==b?"gutter":"class",function(a){var d="text"==b?"textClass":"background"==b?"bgClass":"gutter"==b?"gutterClass":"wrapClass",e=a[d];if(!e)return!1;if(null==c)a[d]=null;else{var f=e.match(Dg(c));if(!f)return!1;var g=f.index+f[0].length;a[d]=e.slice(0,f.index)+(f.index&&g!=e.length?" 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0===e&&(e=1),a.operation(function(){for(var f=a.getCursor(),g=a.getSearchCursor(c,f),h=0;e>h;h++){var i=g.find(b);if(0==h&&i&&ka(g.from(),f)&&(i=g.find(b)),!i&&(g=a.getSearchCursor(c,b?d(a.lastLine()):d(a.firstLine(),0)),!g.find(b)))return}return g.from()})}function nb(a){var b=Wa(a);a.removeOverlay(Wa(a).getOverlay()),b.setOverlay(null),b.getScrollbarAnnotate()&&(b.getScrollbarAnnotate().clear(),b.setScrollbarAnnotate(null))}function ob(a,b,c){return"number"!=typeof a&&(a=a.line),b instanceof Array?C(a,b):c?a>=b&&c>=a:a==b}function pb(a){var b=a.getScrollInfo(),c=6,d=10,e=a.coordsChar({left:0,top:c+b.top},"local"),f=b.clientHeight-d+b.top,g=a.coordsChar({left:0,top:f},"local");return{top:e.line,bottom:g.line}}function tb(b,c,d,e,f,g,h,i,j){function m(){b.operation(function(){for(;!k;)n(),o();p()})}function n(){var a=b.getRange(g.from(),g.to()),c=a.replace(h,i);g.replace(c)}function o(){for(;g.findNext()&&ob(g.from(),e,f);)if(d||!l||g.from().line!=l.line)return b.scrollIntoView(g.from(),30),b.setSelection(g.from(),g.to()),l=g.from(),void(k=!1);k=!0}function p(a){if(a&&a(),b.focus(),l){b.setCursor(l);var c=b.state.vim;c.exMode=!1,c.lastHPos=c.lastHSPos=l.ch}j&&j()}function q(c,d,e){a.e_stop(c);var f=a.keyName(c);switch(f){case"Y":n(),o();break;case"N":o();break;case"A":var g=j;j=void 0,b.operation(m),j=g;break;case"L":n();case"Q":case"Esc":case"Ctrl-C":case"Ctrl-[":p(e)}return k&&p(e),!0}b.state.vim.exMode=!0;var k=!1,l=g.from();return o(),k?void eb(b,"No matches for "+h.source):c?void hb(b,{prefix:"replace with <strong>"+i+"</strong> (y/n/a/q/l)",onKeyDown:q}):(m(),void(j&&j()))}function ub(b){var c=b.state.vim,d=L.macroModeState,e=L.registerController.getRegister("."),f=d.isPlaying,g=d.lastInsertModeChanges,h=[];if(!f){for(var i=g.inVisualBlock?c.lastSelection.visualBlock.height:1,j=g.changes,h=[],k=0;k<j.length;)h.push(j[k]),j[k]instanceof 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m=f.insertModeChanges[h++].changes;L.macroModeState.lastInsertModeChanges.changes=m,Ib(b,m,1),ub(b)}d.isPlaying=!1}function yb(a,b){if(!a.isPlaying){var c=a.latestRegister,d=L.registerController.getRegister(c);d&&d.pushText(b)}}function zb(a){if(!a.isPlaying){var b=a.latestRegister,c=L.registerController.getRegister(b);c&&c.pushInsertModeChanges&&c.pushInsertModeChanges(a.lastInsertModeChanges)}}function Ab(a,b){if(!a.isPlaying){var c=a.latestRegister,d=L.registerController.getRegister(c);d&&d.pushSearchQuery&&d.pushSearchQuery(b)}}function Bb(a,b){var c=L.macroModeState,d=c.lastInsertModeChanges;if(!c.isPlaying)for(;b;){if(d.expectCursorActivityForChange=!0,"+input"==b.origin||"paste"==b.origin||void 0===b.origin){var e=b.text.join("\n");d.maybeReset&&(d.changes=[],d.maybeReset=!1),d.changes.push(e)}b=b.next}}function Cb(a){var b=a.state.vim;if(b.insertMode){var c=L.macroModeState;if(c.isPlaying)return;var d=c.lastInsertModeChanges;d.expectCursorActivityForChange?d.expectCursorActivityForChange=!1:d.maybeReset=!0}else a.curOp.isVimOp||Eb(a,b);b.visualMode&&Db(a)}function Db(a){var b=a.state.vim,c=ba(a,ja(b.sel.head)),d=da(c,0,1);b.fakeCursor&&b.fakeCursor.clear(),b.fakeCursor=a.markText(c,d,{className:"cm-animate-fat-cursor"})}function Eb(b,c){var d=b.getCursor("anchor"),e=b.getCursor("head");if(c.visualMode&&!b.somethingSelected()?Ca(b,!1):c.visualMode||c.insertMode||!b.somethingSelected()||(c.visualMode=!0,c.visualLine=!1,a.signal(b,"vim-mode-change",{mode:"visual"})),c.visualMode){var f=la(e,d)?0:-1,g=la(e,d)?-1:0;e=da(e,0,f),d=da(d,0,g),c.sel={anchor:d,head:e},Qa(b,c,"<",ma(e,d)),Qa(b,c,">",na(e,d))}else c.insertMode||(c.lastHPos=b.getCursor().ch)}function Fb(a){this.keyName=a}function Gb(b){function f(){return d.maybeReset&&(d.changes=[],d.maybeReset=!1),d.changes.push(new Fb(e)),!0}var c=L.macroModeState,d=c.lastInsertModeChanges,e=a.keyName(b);e&&(-1!=e.indexOf("Delete")||-1!=e.indexOf("Backspace"))&&a.lookupKey(e,"vim-insert",f)}function Hb(a,b,c,d){function h(){f?V.processAction(a,b,b.lastEditActionCommand):V.evalInput(a,b)}function i(c){if(e.lastInsertModeChanges.changes.length>0){c=b.lastEditActionCommand?c:1;var d=e.lastInsertModeChanges;Ib(a,d.changes,c)}}var e=L.macroModeState;e.isPlaying=!0;var f=!!b.lastEditActionCommand,g=b.inputState;if(b.inputState=b.lastEditInputState,f&&b.lastEditActionCommand.interlaceInsertRepeat)for(var j=0;c>j;j++)h(),i(1);else d||h(),i(c);b.inputState=g,b.insertMode&&!d&&ub(a),e.isPlaying=!1}function Ib(b,c,d){function e(c){return"string"==typeof c?a.commands[c](b):c(b),!0}var f=b.getCursor("head"),g=L.macroModeState.lastInsertModeChanges.inVisualBlock;if(g){var h=b.state.vim,i=h.lastSelection,j=ea(i.anchor,i.head);ua(b,f,j.line+1),d=b.listSelections().length,b.setCursor(f)}for(var k=0;d>k;k++){g&&b.setCursor(da(f,k,0));for(var l=0;l<c.length;l++){var m=c[l];if(m instanceof Fb)a.lookupKey(m.keyName,"vim-insert",e);else{var n=b.getCursor();b.replaceRange(m,n,n)}}}g&&b.setCursor(da(f,0,1))}a.defineOption("vimMode",!1,function(b,c,d){c&&"vim"!=b.getOption("keyMap")?b.setOption("keyMap","vim"):!c&&d!=a.Init&&/^vim/.test(b.getOption("keyMap"))&&b.setOption("keyMap","default")});var j={Shift:"S",Ctrl:"C",Alt:"A",Cmd:"D",Mod:"A"},k={Enter:"CR",Backspace:"BS",Delete:"Del",Insert:"Ins"},n=/[\d]/,o=[a.isWordChar,function(b){return b&&!a.isWordChar(b)&&!/\s/.test(b)}],p=[function(a){return/\S/.test(a)}],r=q(65,26),s=q(97,26),t=q(48,10),u=[].concat(r,s,t,["<",">"]),v=[].concat(r,s,t,["-",'"',".",":","/"]),D={};E("filetype",void 0,"string",["ft"],function(a,b){if(void 0!==b){if(void 0===a){var c=b.getOption("mode");return"null"==c?"":c}var c=""==a?"null":a;b.setOption("mode",c)}});var H=function(){function f(f,g,h){function k(c){var d=++b%a,g=e[d];g&&g.clear(),e[d]=f.setBookmark(c)}var i=b%a,j=e[i];if(j){var l=j.find();l&&!ka(l,g)&&k(g)}else k(g);k(h),c=b,d=b-a+1,0>d&&(d=0)}function g(f,g){b+=g,b>c?b=c:d>b&&(b=d);var h=e[(a+b)%a];if(h&&!h.find()){var j,i=g>0?1:-1,k=f.getCursor();do if(b+=i,h=e[(a+b)%a],h&&(j=h.find())&&!ka(k,j))break;while(c>b&&b>d)}return h}var a=100,b=-1,c=0,d=0,e=new Array(a);return{cachedCursor:void 0,add:f,move:g}},I=function(a){return a?{changes:a.changes,expectCursorActivityForChange:a.expectCursorActivityForChange}:{changes:[],expectCursorActivityForChange:!1}};J.prototype={exitMacroRecordMode:function(){var a=L.macroModeState;a.onRecordingDone&&a.onRecordingDone(),a.onRecordingDone=void 0,a.isRecording=!1},enterMacroRecordMode:function(a,b){var c=L.registerController.getRegister(b);c&&(c.clear(),this.latestRegister=b,a.openDialog&&(this.onRecordingDone=a.openDialog("(recording)["+b+"]",null,{bottom:!0})),this.isRecording=!0)}};var L,N,O={buildKeyMap:function(){},getRegisterController:function(){return L.registerController},resetVimGlobalState_:M,getVimGlobalState_:function(){return L},maybeInitVimState_:K,suppressErrorLogging:!1,InsertModeKey:Fb,map:function(a,b,c){sb.map(a,b,c)},unmap:function(a,b){sb.unmap(a,b)},setOption:F,getOption:G,defineOption:E,defineEx:function(a,b,c){if(b){if(0!==a.indexOf(b))throw new Error('(Vim.defineEx) "'+b+'" is not a prefix of "'+a+'", command not registered')}else b=a;rb[a]=c,sb.commandMap_[b]={name:a,shortName:b,type:"api"}},handleKey:function(a,b,c){var d=this.findKey(a,b,c);return"function"==typeof d?d():void 0},findKey:function(c,d,e){function g(){var a=L.macroModeState;if(a.isRecording){if("q"==d)return a.exitMacroRecordMode(),Q(c),!0;"mapping"!=e&&yb(a,d)}}function h(){return"<Esc>"==d?(Q(c),f.visualMode?Ca(c):f.insertMode&&ub(c),!0):void 0}function i(b){for(var e;b;)e=/<\w+-.+?>|<\w+>|./.exec(b),d=e[0],b=b.substring(e.index+d.length),a.Vim.handleKey(c,d,"mapping")}function j(){if(h())return!0;for(var a=f.inputState.keyBuffer=f.inputState.keyBuffer+d,e=1==d.length,g=V.matchCommand(a,b,f.inputState,"insert");a.length>1&&"full"!=g.type;){var a=f.inputState.keyBuffer=a.slice(1),i=V.matchCommand(a,b,f.inputState,"insert");"none"!=i.type&&(g=i)}if("none"==g.type)return Q(c),!1;if("partial"==g.type)return N&&window.clearTimeout(N),N=window.setTimeout(function(){f.insertMode&&f.inputState.keyBuffer&&Q(c)},G("insertModeEscKeysTimeout")),!e;if(N&&window.clearTimeout(N),e){for(var j=c.listSelections(),k=0;k<j.length;k++){var l=j[k].head;c.replaceRange("",da(l,0,-(a.length-1)),l,"+input")}L.macroModeState.lastInsertModeChanges.changes.pop()}return Q(c),g.command}function k(){if(g()||h())return!0;var a=f.inputState.keyBuffer=f.inputState.keyBuffer+d;if(/^[1-9]\d*$/.test(a))return!0;var e=/^(\d*)(.*)$/.exec(a);if(!e)return Q(c),!1;var i=f.visualMode?"visual":"normal",j=V.matchCommand(e[2]||e[1],b,f.inputState,i);if("none"==j.type)return Q(c),!1;if("partial"==j.type)return!0;f.inputState.keyBuffer="";var e=/^(\d*)(.*)$/.exec(a);return e[1]&&"0"!=e[1]&&f.inputState.pushRepeatDigit(e[1]),j.command}var l,f=K(c);return l=f.insertMode?j():k(),l===!1?void 0:l===!0?function(){return!0}:function(){return c.operation(function(){c.curOp.isVimOp=!0;try{"keyToKey"==l.type?i(l.toKeys):V.processCommand(c,f,l)}catch(b){throw c.state.vim=void 0,K(c),a.Vim.suppressErrorLogging||console.log(b),b}return!0})}},handleEx:function(a,b){sb.processCommand(a,b)},defineMotion:X,defineAction:aa,defineOperator:$,mapCommand:wb,_mapCommand:vb,defineRegister:S,exitVisualMode:Ca,exitInsertMode:ub};P.prototype.pushRepeatDigit=function(a){this.operator?this.motionRepeat=this.motionRepeat.concat(a):this.prefixRepeat=this.prefixRepeat.concat(a)},P.prototype.getRepeat=function(){var a=0;return(this.prefixRepeat.length>0||this.motionRepeat.length>0)&&(a=1,this.prefixRepeat.length>0&&(a*=parseInt(this.prefixRepeat.join(""),10)),this.motionRepeat.length>0&&(a*=parseInt(this.motionRepeat.join(""),10))),a},R.prototype={setText:function(a,b,c){this.keyBuffer=[a||""],this.linewise=!!b,this.blockwise=!!c},pushText:function(a,b){b&&(this.linewise||this.keyBuffer.push("\n"),this.linewise=!0),this.keyBuffer.push(a)},pushInsertModeChanges:function(a){this.insertModeChanges.push(I(a))},pushSearchQuery:function(a){this.searchQueries.push(a)},clear:function(){this.keyBuffer=[],this.insertModeChanges=[],this.searchQueries=[],this.linewise=!1},toString:function(){return this.keyBuffer.join("")}},T.prototype={pushText:function(a,b,c,d,e){d&&"\n"==c.charAt(0)&&(c=c.slice(1)+"\n"),d&&"\n"!==c.charAt(c.length-1)&&(c+="\n");var f=this.isValidRegister(a)?this.getRegister(a):null;if(!f){switch(b){case"yank":this.registers[0]=new R(c,d,e);break;case"delete":case"change":-1==c.indexOf("\n")?this.registers["-"]=new R(c,d):(this.shiftNumericRegisters_(),this.registers[1]=new R(c,d))}return void this.unnamedRegister.setText(c,d,e)}var g=A(a);g?f.pushText(c,d):f.setText(c,d,e),this.unnamedRegister.setText(f.toString(),d)},getRegister:function(a){return this.isValidRegister(a)?(a=a.toLowerCase(),this.registers[a]||(this.registers[a]=new R),this.registers[a]):this.unnamedRegister},isValidRegister:function(a){return a&&C(a,v)},shiftNumericRegisters_:function(){for(var a=9;a>=2;a--)this.registers[a]=this.getRegister(""+(a-1))}},U.prototype={nextMatch:function(a,b){var c=this.historyBuffer,d=b?-1:1;null===this.initialPrefix&&(this.initialPrefix=a);for(var e=this.iterator+d;b?e>=0:e<c.length;e+=d)for(var f=c[e],g=0;g<=f.length;g++)if(this.initialPrefix==f.substring(0,g))return this.iterator=e,f;return e>=c.length?(this.iterator=c.length,this.initialPrefix):0>e?a:void 0},pushInput:function(a){var b=this.historyBuffer.indexOf(a);b>-1&&this.historyBuffer.splice(b,1),a.length&&this.historyBuffer.push(a)},reset:function(){this.initialPrefix=null,this.iterator=this.historyBuffer.length}};var V={matchCommand:function(a,b,c,d){var e=fa(a,b,d,c);if(!e.full&&!e.partial)return{type:"none"};if(!e.full&&e.partial)return{type:"partial"};for(var f,g=0;g<e.full.length;g++){var h=e.full[g];f||(f=h)}return"<character>"==f.keys.slice(-11)&&(c.selectedCharacter=ha(a)),{type:"full",command:f}},processCommand:function(a,b,c){switch(b.inputState.repeatOverride=c.repeatOverride,c.type){case"motion":this.processMotion(a,b,c);break;case"operator":this.processOperator(a,b,c);break;case"operatorMotion":this.processOperatorMotion(a,b,c);break;case"action":this.processAction(a,b,c);break;case"search":this.processSearch(a,b,c);break;case"ex":case"keyToEx":this.processEx(a,b,c)}},processMotion:function(a,b,c){b.inputState.motion=c.motion,b.inputState.motionArgs=ca(c.motionArgs),this.evalInput(a,b)},processOperator:function(a,b,c){var d=b.inputState;if(d.operator){if(d.operator==c.operator)return d.motion="expandToLine",d.motionArgs={linewise:!0},void this.evalInput(a,b);Q(a)}d.operator=c.operator,d.operatorArgs=ca(c.operatorArgs),b.visualMode&&this.evalInput(a,b)},processOperatorMotion:function(a,b,c){var d=b.visualMode,e=ca(c.operatorMotionArgs);e&&d&&e.visualLine&&(b.visualLine=!0),this.processOperator(a,b,c),d||this.processMotion(a,b,c)},processAction:function(a,b,c){var d=b.inputState,e=d.getRepeat(),f=!!e,g=ca(c.actionArgs)||{};d.selectedCharacter&&(g.selectedCharacter=d.selectedCharacter),c.operator&&this.processOperator(a,b,c),c.motion&&this.processMotion(a,b,c),(c.motion||c.operator)&&this.evalInput(a,b),g.repeat=e||1,g.repeatIsExplicit=f,g.registerName=d.registerName,Q(a),b.lastMotion=null,c.isEdit&&this.recordLastEdit(b,d,c),_[c.action](a,g,b)},processSearch:function(b,c,d){function j(a,e,f){L.searchHistoryController.pushInput(a),L.searchHistoryController.reset();try{jb(b,a,e,f)}catch(g){return eb(b,"Invalid regex: "+a),void Q(b)}V.processMotion(b,c,{type:"motion",motion:"findNext",motionArgs:{forward:!0,toJumplist:d.searchArgs.toJumplist}})}function k(a){b.scrollTo(i.left,i.top),j(a,!0,!0);var c=L.macroModeState;c.isRecording&&Ab(c,a)}function l(c,d,f){var h,g=a.keyName(c);"Up"==g||"Down"==g?(h="Up"==g?!0:!1,d=L.searchHistoryController.nextMatch(d,h)||"",f(d)):"Left"!=g&&"Right"!=g&&"Ctrl"!=g&&"Alt"!=g&&"Shift"!=g&&L.searchHistoryController.reset();var j;try{j=jb(b,d,!0,!0)}catch(c){}j?b.scrollIntoView(mb(b,!e,j),30):(nb(b),b.scrollTo(i.left,i.top))}function m(c,d,e){var f=a.keyName(c);"Esc"==f||"Ctrl-C"==f||"Ctrl-["==f||"Backspace"==f&&""==d?(L.searchHistoryController.pushInput(d),L.searchHistoryController.reset(),jb(b,h),nb(b),b.scrollTo(i.left,i.top),a.e_stop(c),Q(b),e(),b.focus()):"Ctrl-U"==f&&(a.e_stop(c),e(""))}if(b.getSearchCursor){var e=d.searchArgs.forward,f=d.searchArgs.wholeWordOnly;Wa(b).setReversed(!e);var g=e?"/":"?",h=Wa(b).getQuery(),i=b.getScrollInfo();switch(d.searchArgs.querySrc){case"prompt":var n=L.macroModeState;if(n.isPlaying){var o=n.replaySearchQueries.shift();j(o,!0,!1)}else hb(b,{onClose:k,prefix:g,desc:gb,onKeyUp:l,onKeyDown:m});break;case"wordUnderCursor":var 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o,p,q,c=b.inputState,e=c.motion,f=c.motionArgs||{},g=c.operator,h=c.operatorArgs||{},i=c.registerName,j=b.sel,k=ja(b.visualMode?ba(a,j.head):a.getCursor("head")),l=ja(b.visualMode?ba(a,j.anchor):a.getCursor("anchor")),m=ja(k),n=ja(l);if(g&&this.recordLastEdit(b,c),q=void 0!==c.repeatOverride?c.repeatOverride:c.getRepeat(),q>0&&f.explicitRepeat?f.repeatIsExplicit=!0:(f.noRepeat||!f.explicitRepeat&&0===q)&&(q=1,f.repeatIsExplicit=!1),c.selectedCharacter&&(f.selectedCharacter=h.selectedCharacter=c.selectedCharacter),f.repeat=q,Q(a),e){var r=W[e](a,k,f,b);if(b.lastMotion=W[e],!r)return;if(f.toJumplist){var s=L.jumpList,t=s.cachedCursor;t?(Ha(a,t,r),delete s.cachedCursor):Ha(a,k,r)}r instanceof Array?(p=r[0],o=r[1]):o=r,o||(o=ja(k)),b.visualMode?(b.visualBlock&&o.ch===1/0||(o=ba(a,o,b.visualBlock)),p&&(p=ba(a,p,!0)),p=p||n,j.anchor=p,j.head=o,za(a),Qa(a,b,"<",la(p,o)?p:o),Qa(a,b,">",la(p,o)?o:p)):g||(o=ba(a,o),a.setCursor(o.line,o.ch))}if(g){if(h.lastSel){p=n;var 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d=a.state.vim,e=c[0].anchor.line,f=d.visualBlock?c[c.length-1].anchor.line:c[0].head.line,g=d.visualMode?b.repeat:1;b.linewise&&f--;for(var h=e;f>=h;h++)for(var i=0;g>i;i++)a.indentLine(h,b.indentRight);return W.moveToFirstNonWhiteSpaceCharacter(a,c[0].anchor)},changeCase:function(a,b,c,d,e){for(var f=a.getSelections(),g=[],h=b.toLower,i=0;i<f.length;i++){var j=f[i],k="";if(h===!0)k=j.toLowerCase();else if(h===!1)k=j.toUpperCase();else for(var l=0;l<j.length;l++){var m=j.charAt(l);k+=A(m)?m.toLowerCase():m.toUpperCase()}g.push(k)}return a.replaceSelections(g),b.shouldMoveCursor?e:!a.state.vim.visualMode&&b.linewise&&c[0].anchor.line+1==c[0].head.line?W.moveToFirstNonWhiteSpaceCharacter(a,d):b.linewise?d:ma(c[0].anchor,c[0].head)},yank:function(a,b,c,d){var e=a.state.vim,f=a.getSelection(),g=e.visualMode?ma(e.sel.anchor,e.sel.head,c[0].head,c[0].anchor):d;return L.registerController.pushText(b.registerName,"yank",f,b.linewise,e.visualBlock),g}},_={jumpListWalk:function(a,b,c){if(!c.visualMode){var d=b.repeat,e=b.forward,f=L.jumpList,g=f.move(a,e?d:-d),h=g?g.find():void 0;h=h?h:a.getCursor(),a.setCursor(h)}},scroll:function(a,b,c){if(!c.visualMode){var d=b.repeat||1,e=a.defaultTextHeight(),f=a.getScrollInfo().top,g=e*d,h=b.forward?f+g:f-g,i=ja(a.getCursor()),j=a.charCoords(i,"local");if(b.forward)h>j.top?(i.line+=(h-j.top)/e,i.line=Math.ceil(i.line),a.setCursor(i),j=a.charCoords(i,"local"),a.scrollTo(null,j.top)):a.scrollTo(null,h);else{var k=h+a.getScrollInfo().clientHeight;k<j.bottom?(i.line-=(j.bottom-k)/e,i.line=Math.floor(i.line),a.setCursor(i),j=a.charCoords(i,"local"),a.scrollTo(null,j.bottom-a.getScrollInfo().clientHeight)):a.scrollTo(null,h)}}},scrollToCursor:function(a,b){var c=a.getCursor().line,e=a.charCoords(d(c,0),"local"),f=a.getScrollInfo().clientHeight,g=e.top,h=e.bottom-g;switch(b.position){case"center":g=g-f/2+h;break;case"bottom":g=g-f+h}a.scrollTo(null,g)},replayMacro:function(a,b,c){var d=b.selectedCharacter,e=b.repeat,f=L.macroModeState;for("@"==d&&(d=f.latestRegister);e--;)xb(a,c,f,d)},enterMacroRecordMode:function(a,b){var c=L.macroModeState,d=b.selectedCharacter;c.enterMacroRecordMode(a,d)},toggleOverwrite:function(b){b.state.overwrite?(b.toggleOverwrite(!1),b.setOption("keyMap","vim-insert"),a.signal(b,"vim-mode-change",{mode:"insert"})):(b.toggleOverwrite(!0),b.setOption("keyMap","vim-replace"),a.signal(b,"vim-mode-change",{mode:"replace"}))},enterInsertMode:function(b,c,e){if(!b.getOption("readOnly")){e.insertMode=!0,e.insertModeRepeat=c&&c.repeat||1;var f=c?c.insertAt:null,g=e.sel,h=c.head||b.getCursor("head"),i=b.listSelections().length;if("eol"==f)h=d(h.line,pa(b,h.line));else if("charAfter"==f)h=da(h,0,1);else if("firstNonBlank"==f)h=W.moveToFirstNonWhiteSpaceCharacter(b,h);else if("startOfSelectedArea"==f)e.visualBlock?(h=d(Math.min(g.head.line,g.anchor.line),Math.min(g.head.ch,g.anchor.ch)),i=Math.abs(g.head.line-g.anchor.line)+1):h=g.head.line<g.anchor.line?g.head:d(g.anchor.line,0);else if("endOfSelectedArea"==f)e.visualBlock?(h=d(Math.min(g.head.line,g.anchor.line),Math.max(g.head.ch+1,g.anchor.ch)),i=Math.abs(g.head.line-g.anchor.line)+1):h=g.head.line>=g.anchor.line?da(g.head,0,1):d(g.anchor.line,0);else if("inplace"==f&&e.visualMode)return;b.setOption("disableInput",!1),c&&c.replace?(b.toggleOverwrite(!0),b.setOption("keyMap","vim-replace"),a.signal(b,"vim-mode-change",{mode:"replace"})):(b.toggleOverwrite(!1),b.setOption("keyMap","vim-insert"),a.signal(b,"vim-mode-change",{mode:"insert"})),L.macroModeState.isPlaying||(b.on("change",Bb),a.on(b.getInputField(),"keydown",Gb)),e.visualMode&&Ca(b),ua(b,h,i)}},toggleVisualMode:function(b,c,e){var h,f=c.repeat,g=b.getCursor();e.visualMode?e.visualLine^c.linewise||e.visualBlock^c.blockwise?(e.visualLine=!!c.linewise,e.visualBlock=!!c.blockwise,a.signal(b,"vim-mode-change",{mode:"visual",subMode:e.visualLine?"linewise":e.visualBlock?"blockwise":""}),za(b)):Ca(b):(e.visualMode=!0,e.visualLine=!!c.linewise,e.visualBlock=!!c.blockwise,h=ba(b,d(g.line,g.ch+f-1),!0),e.sel={anchor:g,head:h},a.signal(b,"vim-mode-change",{mode:"visual",subMode:e.visualLine?"linewise":e.visualBlock?"blockwise":""}),za(b),Qa(b,e,"<",ma(g,h)),Qa(b,e,">",na(g,h)))},reselectLastSelection:function(b,c,d){var e=d.lastSelection;if(d.visualMode&&xa(b,d),e){var f=e.anchorMark.find(),g=e.headMark.find();if(!f||!g)return;d.sel={anchor:f,head:g},d.visualMode=!0,d.visualLine=e.visualLine,d.visualBlock=e.visualBlock,za(b),Qa(b,d,"<",ma(f,g)),Qa(b,d,">",na(f,g)),a.signal(b,"vim-mode-change",{mode:"visual",subMode:d.visualLine?"linewise":d.visualBlock?"blockwise":""})}},joinLines:function(a,b,c){var e,f;if(c.visualMode){if(e=a.getCursor("anchor"),f=a.getCursor("head"),la(f,e)){var g=f;f=e,e=g}f.ch=pa(a,f.line)-1}else{var h=Math.max(b.repeat,2);e=a.getCursor(),f=ba(a,d(e.line+h-1,1/0))}for(var i=0,j=e.line;j<f.line;j++){i=pa(a,e.line);var g=d(e.line+1,pa(a,e.line+1)),k=a.getRange(e,g);k=k.replace(/\n\s*/g," "),a.replaceRange(k,e,g)}var l=d(e.line,i);c.visualMode&&Ca(a,!1),a.setCursor(l)},newLineAndEnterInsertMode:function(b,c,e){e.insertMode=!0;var f=ja(b.getCursor());if(f.line!==b.firstLine()||c.after){
-f.line=c.after?f.line:f.line-1,f.ch=pa(b,f.line),b.setCursor(f);var g=a.commands.newlineAndIndentContinueComment||a.commands.newlineAndIndent;g(b)}else b.replaceRange("\n",d(b.firstLine(),0)),b.setCursor(b.firstLine(),0);this.enterInsertMode(b,{repeat:c.repeat},e)},paste:function(a,b,c){var e=ja(a.getCursor()),f=L.registerController.getRegister(b.registerName),g=f.toString();if(g){if(b.matchIndent){var h=a.getOption("tabSize"),i=function(a){var b=a.split("	").length-1,c=a.split(" ").length-1;return b*h+1*c},j=a.getLine(a.getCursor().line),k=i(j.match(/^\s*/)[0]),l=g.replace(/\n$/,""),m=g!==l,n=i(g.match(/^\s*/)[0]),g=l.replace(/^\s*/gm,function(b){var c=k+(i(b)-n);if(0>c)return"";if(a.getOption("indentWithTabs")){var d=Math.floor(c/h);return Array(d+1).join("	")}return Array(c+1).join(" ")});g+=m?"\n":""}if(b.repeat>1)var g=Array(b.repeat+1).join(g);var o=f.linewise,p=f.blockwise;if(o)c.visualMode?g=c.visualLine?g.slice(0,-1):"\n"+g.slice(0,g.length-1)+"\n":b.after?(g="\n"+g.slice(0,g.length-1),e.ch=pa(a,e.line)):e.ch=0;else{if(p){g=g.split("\n");for(var q=0;q<g.length;q++)g[q]=""==g[q]?" ":g[q]}e.ch+=b.after?1:0}var r,s;if(c.visualMode){c.lastPastedText=g;var t,u=wa(a,c),v=u[0],w=u[1],x=a.getSelection(),y=a.listSelections(),z=new Array(y.length).join("1").split("1");c.lastSelection&&(t=c.lastSelection.headMark.find()),L.registerController.unnamedRegister.setText(x),p?(a.replaceSelections(z),w=d(v.line+g.length-1,v.ch),a.setCursor(v),ta(a,w),a.replaceSelections(g),r=v):c.visualBlock?(a.replaceSelections(z),a.setCursor(v),a.replaceRange(g,v,v),r=v):(a.replaceRange(g,v,w),r=a.posFromIndex(a.indexFromPos(v)+g.length-1)),t&&(c.lastSelection.headMark=a.setBookmark(t)),o&&(r.ch=0)}else if(p){a.setCursor(e);for(var q=0;q<g.length;q++){var A=e.line+q;A>a.lastLine()&&a.replaceRange("\n",d(A,0));var B=pa(a,A);B<e.ch&&sa(a,A,e.ch)}a.setCursor(e),ta(a,d(e.line+g.length-1,e.ch)),a.replaceSelections(g),r=e}else a.replaceRange(g,e),o&&b.after?r=d(e.line+1,Fa(a.getLine(e.line+1))):o&&!b.after?r=d(e.line,Fa(a.getLine(e.line))):!o&&b.after?(s=a.indexFromPos(e),r=a.posFromIndex(s+g.length-1)):(s=a.indexFromPos(e),r=a.posFromIndex(s+g.length));c.visualMode&&Ca(a,!1),a.setCursor(r)}},undo:function(b,c){b.operation(function(){ia(b,a.commands.undo,c.repeat)(),b.setCursor(b.getCursor("anchor"))})},redo:function(b,c){ia(b,a.commands.redo,c.repeat)()},setRegister:function(a,b,c){c.inputState.registerName=b.selectedCharacter},setMark:function(a,b,c){var d=b.selectedCharacter;Qa(a,c,d,a.getCursor())},replace:function(b,c,e){var h,i,f=c.selectedCharacter,g=b.getCursor(),j=b.listSelections();if(e.visualMode)g=b.getCursor("start"),i=b.getCursor("end");else{var k=b.getLine(g.line);h=g.ch+c.repeat,h>k.length&&(h=k.length),i=d(g.line,h)}if("\n"==f)e.visualMode||b.replaceRange("",g,i),(a.commands.newlineAndIndentContinueComment||a.commands.newlineAndIndent)(b);else{var l=b.getRange(g,i);if(l=l.replace(/[^\n]/g,f),e.visualBlock){var m=new Array(b.getOption("tabSize")+1).join(" ");l=b.getSelection(),l=l.replace(/\t/g,m).replace(/[^\n]/g,f).split("\n"),b.replaceSelections(l)}else b.replaceRange(l,g,i);e.visualMode?(g=la(j[0].anchor,j[0].head)?j[0].anchor:j[0].head,b.setCursor(g),Ca(b,!1)):b.setCursor(da(i,0,-1))}},incrementNumberToken:function(a,b){for(var g,h,i,j,k,c=a.getCursor(),e=a.getLine(c.line),f=/-?\d+/g;null!==(g=f.exec(e))&&(k=g[0],h=g.index,i=h+k.length,!(c.ch<i)););if((b.backtrack||!(i<=c.ch))&&k){var l=b.increase?1:-1,m=parseInt(k)+l*b.repeat,n=d(c.line,h),o=d(c.line,i);j=m.toString(),a.replaceRange(j,n,o),a.setCursor(d(c.line,h+j.length-1))}},repeatLastEdit:function(a,b,c){var d=c.lastEditInputState;if(d){var e=b.repeat;e&&b.repeatIsExplicit?c.lastEditInputState.repeatOverride=e:e=c.lastEditInputState.repeatOverride||e,Hb(a,c,e,!1)}},exitInsertMode:ub},Ja={"(":"bracket",")":"bracket","{":"bracket","}":"bracket","[":"section","]":"section","*":"comment","/":"comment",m:"method",M:"method","#":"preprocess"},Ka={bracket:{isComplete:function(a){if(a.nextCh===a.symb){if(a.depth++,a.depth>=1)return!0}else a.nextCh===a.reverseSymb&&a.depth--;return!1}},section:{init:function(a){a.curMoveThrough=!0,a.symb=(a.forward?"]":"[")===a.symb?"{":"}"},isComplete:function(a){return 0===a.index&&a.nextCh===a.symb}},comment:{isComplete:function(a){var b="*"===a.lastCh&&"/"===a.nextCh;return a.lastCh=a.nextCh,b}},method:{init:function(a){a.symb="m"===a.symb?"{":"}",a.reverseSymb="{"===a.symb?"}":"{"},isComplete:function(a){return a.nextCh===a.symb?!0:!1}},preprocess:{init:function(a){a.index=0},isComplete:function(a){if("#"===a.nextCh){var b=a.lineText.match(/#(\w+)/)[1];if("endif"===b){if(a.forward&&0===a.depth)return!0;a.depth++}else if("if"===b){if(!a.forward&&0===a.depth)return!0;a.depth--}if("else"===b&&0===a.depth)return!0}return!1}}};E("pcre",!0,"boolean"),Va.prototype={getQuery:function(){return L.query},setQuery:function(a){L.query=a},getOverlay:function(){return this.searchOverlay},setOverlay:function(a){this.searchOverlay=a},isReversed:function(){return L.isReversed},setReversed:function(a){L.isReversed=a},getScrollbarAnnotate:function(){return this.annotate},setScrollbarAnnotate:function(a){this.annotate=a}};var _a={"\\n":"\n","\\r":"\r","\\t":"	"},bb={"\\/":"/","\\\\":"\\","\\n":"\n","\\r":"\r","\\t":"	"},gb="(Javascript regexp)",qb=function(){this.buildCommandMap_()};qb.prototype={processCommand:function(a,b,c){var d=this;a.operation(function(){a.curOp.isVimOp=!0,d._processCommand(a,b,c)})},_processCommand:function(b,c,d){var e=b.state.vim,f=L.registerController.getRegister(":"),g=f.toString();e.visualMode&&Ca(b);var h=new a.StringStream(c);f.setText(c);var i=d||{};i.input=c;try{this.parseInput_(b,h,i)}catch(j){throw eb(b,j),j}var k,l;if(i.commandName){if(k=this.matchCommand_(i.commandName)){if(l=k.name,k.excludeFromCommandHistory&&f.setText(g),this.parseCommandArgs_(h,i,k),"exToKey"==k.type){for(var m=0;m<k.toKeys.length;m++)a.Vim.handleKey(b,k.toKeys[m],"mapping");return}if("exToEx"==k.type)return void this.processCommand(b,k.toInput)}}else void 0!==i.line&&(l="move");if(!l)return void eb(b,'Not an editor command ":'+c+'"');try{rb[l](b,i),k&&k.possiblyAsync||!i.callback||i.callback()}catch(j){throw eb(b,j),j}},parseInput_:function(a,b,c){b.eatWhile(":"),b.eat("%")?(c.line=a.firstLine(),c.lineEnd=a.lastLine()):(c.line=this.parseLineSpec_(a,b),void 0!==c.line&&b.eat(",")&&(c.lineEnd=this.parseLineSpec_(a,b)));var d=b.match(/^(\w+)/);return d?c.commandName=d[1]:c.commandName=b.match(/.*/)[0],c},parseLineSpec_:function(a,b){var c=b.match(/^(\d+)/);if(c)return parseInt(c[1],10)-1;switch(b.next()){case".":return a.getCursor().line;case"$":return a.lastLine();case"'":var d=a.state.vim.marks[b.next()];if(d&&d.find())return d.find().line;throw new Error("Mark not set");default:return void b.backUp(1)}},parseCommandArgs_:function(a,b,c){if(!a.eol()){b.argString=a.match(/.*/)[0];var d=c.argDelimiter||/\s+/,e=qa(b.argString).split(d);e.length&&e[0]&&(b.args=e)}},matchCommand_:function(a){for(var b=a.length;b>0;b--){var c=a.substring(0,b);if(this.commandMap_[c]){var d=this.commandMap_[c];if(0===d.name.indexOf(a))return d}}return null},buildCommandMap_:function(){this.commandMap_={};for(var a=0;a<c.length;a++){var b=c[a],d=b.shortName||b.name;this.commandMap_[d]=b}},map:function(a,c,d){if(":"!=a&&":"==a.charAt(0)){if(d)throw Error("Mode not supported for ex mappings");var e=a.substring(1);":"!=c&&":"==c.charAt(0)?this.commandMap_[e]={name:e,type:"exToEx",toInput:c.substring(1),user:!0}:this.commandMap_[e]={name:e,type:"exToKey",toKeys:c,user:!0}}else if(":"!=c&&":"==c.charAt(0)){var f={keys:a,type:"keyToEx",exArgs:{input:c.substring(1)},user:!0};d&&(f.context=d),b.unshift(f)}else{var f={keys:a,type:"keyToKey",toKeys:c,user:!0};d&&(f.context=d),b.unshift(f)}},unmap:function(a,c){if(":"!=a&&":"==a.charAt(0)){if(c)throw Error("Mode not supported for ex mappings");var d=a.substring(1);if(this.commandMap_[d]&&this.commandMap_[d].user)return void delete this.commandMap_[d]}else for(var e=a,f=0;f<b.length;f++)if(e==b[f].keys&&b[f].context===c&&b[f].user)return void b.splice(f,1);throw Error("No such mapping.")}};var rb={colorscheme:function(a,b){return!b.args||b.args.length<1?void eb(a,a.getOption("theme")):void a.setOption("theme",b.args[0])},map:function(a,b,c){var d=b.args;return!d||d.length<2?void(a&&eb(a,"Invalid mapping: "+b.input)):void sb.map(d[0],d[1],c)},imap:function(a,b){this.map(a,b,"insert")},nmap:function(a,b){this.map(a,b,"normal")},vmap:function(a,b){this.map(a,b,"visual")},unmap:function(a,b,c){var d=b.args;return!d||d.length<1?void(a&&eb(a,"No such mapping: "+b.input)):void sb.unmap(d[0],c)},move:function(a,b){V.processCommand(a,a.state.vim,{type:"motion",motion:"moveToLineOrEdgeOfDocument",motionArgs:{forward:!1,explicitRepeat:!0,linewise:!0},repeatOverride:b.line+1})},set:function(a,b){var c=b.args,d=b.setCfg||{};if(!c||c.length<1)return void(a&&eb(a,"Invalid mapping: "+b.input));var e=c[0].split("="),f=e[0],g=e[1],h=!1;if("?"==f.charAt(f.length-1)){if(g)throw Error("Trailing characters: "+b.argString);f=f.substring(0,f.length-1),h=!0}void 0===g&&"no"==f.substring(0,2)&&(f=f.substring(2),g=!1);var i=D[f]&&"boolean"==D[f].type;if(i&&void 0==g&&(g=!0),!i&&void 0===g||h){var j=G(f,a,d);j===!0||j===!1?eb(a," "+(j?"":"no")+f):eb(a,"  "+f+"="+j)}else F(f,g,a,d)},setlocal:function(a,b){b.setCfg={scope:"local"},this.set(a,b)},setglobal:function(a,b){b.setCfg={scope:"global"},this.set(a,b)},registers:function(a,b){var c=b.args,d=L.registerController.registers,e="----------Registers----------<br><br>";if(c){var f;c=c.join("");for(var h=0;h<c.length;h++)if(f=c.charAt(h),L.registerController.isValidRegister(f)){var i=d[f]||new R;e+='"'+f+"    "+i.toString()+"<br>"}}else for(var f in d){var g=d[f].toString();g.length&&(e+='"'+f+"    "+g+"<br>")}eb(a,e)},sort:function(b,c){function i(){if(c.argString){var b=new a.StringStream(c.argString);if(b.eat("!")&&(e=!0),b.eol())return;if(!b.eatSpace())return"Invalid arguments";var d=b.match(/[a-z]+/);if(d){d=d[0],f=-1!=d.indexOf("i"),g=-1!=d.indexOf("u");var i=-1!=d.indexOf("d")&&1,j=-1!=d.indexOf("x")&&1,k=-1!=d.indexOf("o")&&1;if(i+j+k>1)return"Invalid arguments";h=i&&"decimal"||j&&"hex"||k&&"octal"}if(b.match(/\/.*\//))return"patterns not supported"}}function u(a,b){if(e){var c;c=a,a=b,b=c}f&&(a=a.toLowerCase(),b=b.toLowerCase());var d=h&&p.exec(a),g=h&&p.exec(b);return d?(d=parseInt((d[1]+d[2]).toLowerCase(),q),g=parseInt((g[1]+g[2]).toLowerCase(),q),d-g):b>a?-1:1}var e,f,g,h,j=i();if(j)return void eb(b,j+": "+c.argString);var k=c.line||b.firstLine(),l=c.lineEnd||c.line||b.lastLine();if(k!=l){var m=d(k,0),n=d(l,pa(b,l)),o=b.getRange(m,n).split("\n"),p="decimal"==h?/(-?)([\d]+)/:"hex"==h?/(-?)(?:0x)?([0-9a-f]+)/i:"octal"==h?/([0-7]+)/:null,q="decimal"==h?10:"hex"==h?16:"octal"==h?8:null,r=[],s=[];if(h)for(var t=0;t<o.length;t++)p.exec(o[t])?r.push(o[t]):s.push(o[t]);else s=o;if(r.sort(u),s.sort(u),o=e?r.concat(s):s.concat(r),g){var w,v=o;o=[];for(var t=0;t<v.length;t++)v[t]!=w&&o.push(v[t]),w=v[t]}b.replaceRange(o.join("\n"),m,n)}},global:function(a,b){var c=b.argString;if(!c)return void eb(a,"Regular Expression missing from global");var h,d=void 0!==b.line?b.line:a.firstLine(),e=b.lineEnd||b.line||a.lastLine(),f=Ya(c),g=c;if(f.length&&(g=f[0],h=f.slice(1,f.length).join("/")),g)try{jb(a,g,!0,!0)}catch(i){return void eb(a,"Invalid regex: "+g)}for(var j=Wa(a).getQuery(),k=[],l="",m=d;e>=m;m++){var n=j.test(a.getLine(m));n&&(k.push(m+1),l+=a.getLine(m)+"<br>")}if(!h)return void eb(a,l);var o=0,p=function(){if(o<k.length){var b=k[o]+h;sb.processCommand(a,b,{callback:p})}o++};p()},substitute:function(a,b){if(!a.getSearchCursor)throw new Error("Search feature not available. Requires searchcursor.js or any other getSearchCursor implementation.");var f,h,i,j,c=b.argString,e=c?Ya(c):[],g="",k=!1,l=!1;if(e.length)f=e[0],g=e[1],void 0!==g&&(g=G("pcre")?cb(g):ab(g),L.lastSubstituteReplacePart=g),h=e[2]?e[2].split(" "):[];else if(c&&c.length)return void eb(a,"Substitutions should be of the form :s/pattern/replace/");if(h&&(i=h[0],j=parseInt(h[1]),i&&(-1!=i.indexOf("c")&&(k=!0,i.replace("c","")),-1!=i.indexOf("g")&&(l=!0,i.replace("g","")),f=f+"/"+i)),f)try{jb(a,f,!0,!0)}catch(m){return void eb(a,"Invalid regex: "+f)}if(g=g||L.lastSubstituteReplacePart,void 0===g)return void eb(a,"No previous substitute regular expression");var n=Wa(a),o=n.getQuery(),p=void 0!==b.line?b.line:a.getCursor().line,q=b.lineEnd||p;p==a.firstLine()&&q==a.lastLine()&&(q=1/0),j&&(p=q,q=p+j-1);var r=ba(a,d(p,0)),s=a.getSearchCursor(o,r);tb(a,k,l,p,q,s,o,g,b.callback)},redo:a.commands.redo,undo:a.commands.undo,write:function(b){a.commands.save?a.commands.save(b):b.save&&b.save()},nohlsearch:function(a){nb(a)},yank:function(a){var b=ja(a.getCursor()),c=b.line,d=a.getLine(c);L.registerController.pushText("0","yank",d,!0,!0)},delmarks:function(b,c){if(!c.argString||!qa(c.argString))return void eb(b,"Argument required");for(var d=b.state.vim,e=new a.StringStream(qa(c.argString));!e.eol();){e.eatSpace();var f=e.pos;if(!e.match(/[a-zA-Z]/,!1))return void eb(b,"Invalid argument: "+c.argString.substring(f));var g=e.next();if(e.match("-",!0)){if(!e.match(/[a-zA-Z]/,!1))return void eb(b,"Invalid argument: "+c.argString.substring(f));var h=g,i=e.next();if(!(x(h)&&x(i)||A(h)&&A(i)))return void eb(b,"Invalid argument: "+h+"-");var j=h.charCodeAt(0),k=i.charCodeAt(0);if(j>=k)return void eb(b,"Invalid argument: "+c.argString.substring(f));for(var l=0;k-j>=l;l++){var m=String.fromCharCode(j+l);delete d.marks[m]}}else delete d.marks[g]}}},sb=new qb;return a.keyMap.vim={attach:h,detach:g,call:i},E("insertModeEscKeysTimeout",200,"number"),a.keyMap["vim-insert"]={fallthrough:["default"],attach:h,detach:g,call:i},a.keyMap["vim-replace"]={Backspace:"goCharLeft",fallthrough:["vim-insert"],attach:h,detach:g,call:i},M(),O};a.Vim=e()});
\ No newline at end of file
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+// This is CodeMirror (https://codemirror.net), a code editor
+// implemented in JavaScript on top of the browser's DOM.
+//
+// You can find some technical background for some of the code below
+// at http://marijnhaverbeke.nl/blog/#cm-internals .
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global.CodeMirror = factory());
+}(this, (function () { 'use strict';
+
+  // Kludges for bugs and behavior differences that can't be feature
+  // detected are enabled based on userAgent etc sniffing.
+  var userAgent = navigator.userAgent;
+  var platform = navigator.platform;
+
+  var gecko = /gecko\/\d/i.test(userAgent);
+  var ie_upto10 = /MSIE \d/.test(userAgent);
+  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent);
+  var edge = /Edge\/(\d+)/.exec(userAgent);
+  var ie = ie_upto10 || ie_11up || edge;
+  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);
+  var webkit = !edge && /WebKit\//.test(userAgent);
+  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent);
+  var chrome = !edge && /Chrome\//.test(userAgent);
+  var presto = /Opera\//.test(userAgent);
+  var safari = /Apple Computer/.test(navigator.vendor);
+  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent);
+  var phantom = /PhantomJS/.test(userAgent);
+
+  var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent);
+  var android = /Android/.test(userAgent);
+  // This is woefully incomplete. Suggestions for alternative methods welcome.
+  var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);
+  var mac = ios || /Mac/.test(platform);
+  var chromeOS = /\bCrOS\b/.test(userAgent);
+  var windows = /win/i.test(platform);
+
+  var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/);
+  if (presto_version) { presto_version = Number(presto_version[1]); }
+  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
+  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
+  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
+  var captureRightClick = gecko || (ie && ie_version >= 9);
+
+  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }
+
+  var rmClass = function(node, cls) {
+    var current = node.className;
+    var match = classTest(cls).exec(current);
+    if (match) {
+      var after = current.slice(match.index + match[0].length);
+      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
+    }
+  };
+
+  function removeChildren(e) {
+    for (var count = e.childNodes.length; count > 0; --count)
+      { e.removeChild(e.firstChild); }
+    return e
+  }
+
+  function removeChildrenAndAdd(parent, e) {
+    return removeChildren(parent).appendChild(e)
+  }
+
+  function elt(tag, content, className, style) {
+    var e = document.createElement(tag);
+    if (className) { e.className = className; }
+    if (style) { e.style.cssText = style; }
+    if (typeof content == "string") { e.appendChild(document.createTextNode(content)); }
+    else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } }
+    return e
+  }
+  // wrapper for elt, which removes the elt from the accessibility tree
+  function eltP(tag, content, className, style) {
+    var e = elt(tag, content, className, style);
+    e.setAttribute("role", "presentation");
+    return e
+  }
+
+  var range;
+  if (document.createRange) { range = function(node, start, end, endNode) {
+    var r = document.createRange();
+    r.setEnd(endNode || node, end);
+    r.setStart(node, start);
+    return r
+  }; }
+  else { range = function(node, start, end) {
+    var r = document.body.createTextRange();
+    try { r.moveToElementText(node.parentNode); }
+    catch(e) { return r }
+    r.collapse(true);
+    r.moveEnd("character", end);
+    r.moveStart("character", start);
+    return r
+  }; }
+
+  function contains(parent, child) {
+    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
+      { child = child.parentNode; }
+    if (parent.contains)
+      { return parent.contains(child) }
+    do {
+      if (child.nodeType == 11) { child = child.host; }
+      if (child == parent) { return true }
+    } while (child = child.parentNode)
+  }
+
+  function activeElt() {
+    // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
+    // IE < 10 will throw when accessed while the page is loading or in an iframe.
+    // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
+    var activeElement;
+    try {
+      activeElement = document.activeElement;
+    } catch(e) {
+      activeElement = document.body || null;
+    }
+    while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)
+      { activeElement = activeElement.shadowRoot.activeElement; }
+    return activeElement
+  }
+
+  function addClass(node, cls) {
+    var current = node.className;
+    if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls; }
+  }
+  function joinClasses(a, b) {
+    var as = a.split(" ");
+    for (var i = 0; i < as.length; i++)
+      { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i]; } }
+    return b
+  }
+
+  var selectInput = function(node) { node.select(); };
+  if (ios) // Mobile Safari apparently has a bug where select() is broken.
+    { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; }
+  else if (ie) // Suppress mysterious IE10 errors
+    { selectInput = function(node) { try { node.select(); } catch(_e) {} }; }
+
+  function bind(f) {
+    var args = Array.prototype.slice.call(arguments, 1);
+    return function(){return f.apply(null, args)}
+  }
+
+  function copyObj(obj, target, overwrite) {
+    if (!target) { target = {}; }
+    for (var prop in obj)
+      { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
+        { target[prop] = obj[prop]; } }
+    return target
+  }
+
+  // Counts the column offset in a string, taking tabs into account.
+  // Used mostly to find indentation.
+  function countColumn(string, end, tabSize, startIndex, startValue) {
+    if (end == null) {
+      end = string.search(/[^\s\u00a0]/);
+      if (end == -1) { end = string.length; }
+    }
+    for (var i = startIndex || 0, n = startValue || 0;;) {
+      var nextTab = string.indexOf("\t", i);
+      if (nextTab < 0 || nextTab >= end)
+        { return n + (end - i) }
+      n += nextTab - i;
+      n += tabSize - (n % tabSize);
+      i = nextTab + 1;
+    }
+  }
+
+  var Delayed = function() {
+    this.id = null;
+    this.f = null;
+    this.time = 0;
+    this.handler = bind(this.onTimeout, this);
+  };
+  Delayed.prototype.onTimeout = function (self) {
+    self.id = 0;
+    if (self.time <= +new Date) {
+      self.f();
+    } else {
+      setTimeout(self.handler, self.time - +new Date);
+    }
+  };
+  Delayed.prototype.set = function (ms, f) {
+    this.f = f;
+    var time = +new Date + ms;
+    if (!this.id || time < this.time) {
+      clearTimeout(this.id);
+      this.id = setTimeout(this.handler, ms);
+      this.time = time;
+    }
+  };
+
+  function indexOf(array, elt) {
+    for (var i = 0; i < array.length; ++i)
+      { if (array[i] == elt) { return i } }
+    return -1
+  }
+
+  // Number of pixels added to scroller and sizer to hide scrollbar
+  var scrollerGap = 30;
+
+  // Returned or thrown by various protocols to signal 'I'm not
+  // handling this'.
+  var Pass = {toString: function(){return "CodeMirror.Pass"}};
+
+  // Reused option objects for setSelection & friends
+  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};
+
+  // The inverse of countColumn -- find the offset that corresponds to
+  // a particular column.
+  function findColumn(string, goal, tabSize) {
+    for (var pos = 0, col = 0;;) {
+      var nextTab = string.indexOf("\t", pos);
+      if (nextTab == -1) { nextTab = string.length; }
+      var skipped = nextTab - pos;
+      if (nextTab == string.length || col + skipped >= goal)
+        { return pos + Math.min(skipped, goal - col) }
+      col += nextTab - pos;
+      col += tabSize - (col % tabSize);
+      pos = nextTab + 1;
+      if (col >= goal) { return pos }
+    }
+  }
+
+  var spaceStrs = [""];
+  function spaceStr(n) {
+    while (spaceStrs.length <= n)
+      { spaceStrs.push(lst(spaceStrs) + " "); }
+    return spaceStrs[n]
+  }
+
+  function lst(arr) { return arr[arr.length-1] }
+
+  function map(array, f) {
+    var out = [];
+    for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); }
+    return out
+  }
+
+  function insertSorted(array, value, score) {
+    var pos = 0, priority = score(value);
+    while (pos < array.length && score(array[pos]) <= priority) { pos++; }
+    array.splice(pos, 0, value);
+  }
+
+  function nothing() {}
+
+  function createObj(base, props) {
+    var inst;
+    if (Object.create) {
+      inst = Object.create(base);
+    } else {
+      nothing.prototype = base;
+      inst = new nothing();
+    }
+    if (props) { copyObj(props, inst); }
+    return inst
+  }
+
+  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
+  function isWordCharBasic(ch) {
+    return /\w/.test(ch) || ch > "\x80" &&
+      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
+  }
+  function isWordChar(ch, helper) {
+    if (!helper) { return isWordCharBasic(ch) }
+    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true }
+    return helper.test(ch)
+  }
+
+  function isEmpty(obj) {
+    for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }
+    return true
+  }
+
+  // Extending unicode characters. A series of a non-extending char +
+  // any number of extending chars is treated as a single unit as far
+  // as editing and measuring is concerned. This is not fully correct,
+  // since some scripts/fonts/browsers also treat other configurations
+  // of code points as a group.
+  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
+  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }
+
+  // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.
+  function skipExtendingChars(str, pos, dir) {
+    while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; }
+    return pos
+  }
+
+  // Returns the value from the range [`from`; `to`] that satisfies
+  // `pred` and is closest to `from`. Assumes that at least `to`
+  // satisfies `pred`. Supports `from` being greater than `to`.
+  function findFirst(pred, from, to) {
+    // At any point we are certain `to` satisfies `pred`, don't know
+    // whether `from` does.
+    var dir = from > to ? -1 : 1;
+    for (;;) {
+      if (from == to) { return from }
+      var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);
+      if (mid == from) { return pred(mid) ? from : to }
+      if (pred(mid)) { to = mid; }
+      else { from = mid + dir; }
+    }
+  }
+
+  // BIDI HELPERS
+
+  function iterateBidiSections(order, from, to, f) {
+    if (!order) { return f(from, to, "ltr", 0) }
+    var found = false;
+    for (var i = 0; i < order.length; ++i) {
+      var part = order[i];
+      if (part.from < to && part.to > from || from == to && part.to == from) {
+        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i);
+        found = true;
+      }
+    }
+    if (!found) { f(from, to, "ltr"); }
+  }
+
+  var bidiOther = null;
+  function getBidiPartAt(order, ch, sticky) {
+    var found;
+    bidiOther = null;
+    for (var i = 0; i < order.length; ++i) {
+      var cur = order[i];
+      if (cur.from < ch && cur.to > ch) { return i }
+      if (cur.to == ch) {
+        if (cur.from != cur.to && sticky == "before") { found = i; }
+        else { bidiOther = i; }
+      }
+      if (cur.from == ch) {
+        if (cur.from != cur.to && sticky != "before") { found = i; }
+        else { bidiOther = i; }
+      }
+    }
+    return found != null ? found : bidiOther
+  }
+
+  // Bidirectional ordering algorithm
+  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
+  // that this (partially) implements.
+
+  // One-char codes used for character types:
+  // L (L):   Left-to-Right
+  // R (R):   Right-to-Left
+  // r (AL):  Right-to-Left Arabic
+  // 1 (EN):  European Number
+  // + (ES):  European Number Separator
+  // % (ET):  European Number Terminator
+  // n (AN):  Arabic Number
+  // , (CS):  Common Number Separator
+  // m (NSM): Non-Spacing Mark
+  // b (BN):  Boundary Neutral
+  // s (B):   Paragraph Separator
+  // t (S):   Segment Separator
+  // w (WS):  Whitespace
+  // N (ON):  Other Neutrals
+
+  // Returns null if characters are ordered as they appear
+  // (left-to-right), or an array of sections ({from, to, level}
+  // objects) in the order in which they occur visually.
+  var bidiOrdering = (function() {
+    // Character types for codepoints 0 to 0xff
+    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
+    // Character types for codepoints 0x600 to 0x6f9
+    var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111";
+    function charType(code) {
+      if (code <= 0xf7) { return lowTypes.charAt(code) }
+      else if (0x590 <= code && code <= 0x5f4) { return "R" }
+      else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }
+      else if (0x6ee <= code && code <= 0x8ac) { return "r" }
+      else if (0x2000 <= code && code <= 0x200b) { return "w" }
+      else if (code == 0x200c) { return "b" }
+      else { return "L" }
+    }
+
+    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
+    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
+
+    function BidiSpan(level, from, to) {
+      this.level = level;
+      this.from = from; this.to = to;
+    }
+
+    return function(str, direction) {
+      var outerType = direction == "ltr" ? "L" : "R";
+
+      if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false }
+      var len = str.length, types = [];
+      for (var i = 0; i < len; ++i)
+        { types.push(charType(str.charCodeAt(i))); }
+
+      // W1. Examine each non-spacing mark (NSM) in the level run, and
+      // change the type of the NSM to the type of the previous
+      // character. If the NSM is at the start of the level run, it will
+      // get the type of sor.
+      for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
+        var type = types[i$1];
+        if (type == "m") { types[i$1] = prev; }
+        else { prev = type; }
+      }
+
+      // W2. Search backwards from each instance of a European number
+      // until the first strong type (R, L, AL, or sor) is found. If an
+      // AL is found, change the type of the European number to Arabic
+      // number.
+      // W3. Change all ALs to R.
+      for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
+        var type$1 = types[i$2];
+        if (type$1 == "1" && cur == "r") { types[i$2] = "n"; }
+        else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R"; } }
+      }
+
+      // W4. A single European separator between two European numbers
+      // changes to a European number. A single common separator between
+      // two numbers of the same type changes to that type.
+      for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
+        var type$2 = types[i$3];
+        if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1"; }
+        else if (type$2 == "," && prev$1 == types[i$3+1] &&
+                 (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1; }
+        prev$1 = type$2;
+      }
+
+      // W5. A sequence of European terminators adjacent to European
+      // numbers changes to all European numbers.
+      // W6. Otherwise, separators and terminators change to Other
+      // Neutral.
+      for (var i$4 = 0; i$4 < len; ++i$4) {
+        var type$3 = types[i$4];
+        if (type$3 == ",") { types[i$4] = "N"; }
+        else if (type$3 == "%") {
+          var end = (void 0);
+          for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
+          var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
+          for (var j = i$4; j < end; ++j) { types[j] = replace; }
+          i$4 = end - 1;
+        }
+      }
+
+      // W7. Search backwards from each instance of a European number
+      // until the first strong type (R, L, or sor) is found. If an L is
+      // found, then change the type of the European number to L.
+      for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
+        var type$4 = types[i$5];
+        if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L"; }
+        else if (isStrong.test(type$4)) { cur$1 = type$4; }
+      }
+
+      // N1. A sequence of neutrals takes the direction of the
+      // surrounding strong text if the text on both sides has the same
+      // direction. European and Arabic numbers act as if they were R in
+      // terms of their influence on neutrals. Start-of-level-run (sor)
+      // and end-of-level-run (eor) are used at level run boundaries.
+      // N2. Any remaining neutrals take the embedding direction.
+      for (var i$6 = 0; i$6 < len; ++i$6) {
+        if (isNeutral.test(types[i$6])) {
+          var end$1 = (void 0);
+          for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
+          var before = (i$6 ? types[i$6-1] : outerType) == "L";
+          var after = (end$1 < len ? types[end$1] : outerType) == "L";
+          var replace$1 = before == after ? (before ? "L" : "R") : outerType;
+          for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; }
+          i$6 = end$1 - 1;
+        }
+      }
+
+      // Here we depart from the documented algorithm, in order to avoid
+      // building up an actual levels array. Since there are only three
+      // levels (0, 1, 2) in an implementation that doesn't take
+      // explicit embedding into account, we can build up the order on
+      // the fly, without following the level-based algorithm.
+      var order = [], m;
+      for (var i$7 = 0; i$7 < len;) {
+        if (countsAsLeft.test(types[i$7])) {
+          var start = i$7;
+          for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
+          order.push(new BidiSpan(0, start, i$7));
+        } else {
+          var pos = i$7, at = order.length, isRTL = direction == "rtl" ? 1 : 0;
+          for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
+          for (var j$2 = pos; j$2 < i$7;) {
+            if (countsAsNum.test(types[j$2])) {
+              if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); at += isRTL; }
+              var nstart = j$2;
+              for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
+              order.splice(at, 0, new BidiSpan(2, nstart, j$2));
+              at += isRTL;
+              pos = j$2;
+            } else { ++j$2; }
+          }
+          if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); }
+        }
+      }
+      if (direction == "ltr") {
+        if (order[0].level == 1 && (m = str.match(/^\s+/))) {
+          order[0].from = m[0].length;
+          order.unshift(new BidiSpan(0, 0, m[0].length));
+        }
+        if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
+          lst(order).to -= m[0].length;
+          order.push(new BidiSpan(0, len - m[0].length, len));
+        }
+      }
+
+      return direction == "rtl" ? order.reverse() : order
+    }
+  })();
+
+  // Get the bidi ordering for the given line (and cache it). Returns
+  // false for lines that are fully left-to-right, and an array of
+  // BidiSpan objects otherwise.
+  function getOrder(line, direction) {
+    var order = line.order;
+    if (order == null) { order = line.order = bidiOrdering(line.text, direction); }
+    return order
+  }
+
+  // EVENT HANDLING
+
+  // Lightweight event framework. on/off also work on DOM nodes,
+  // registering native DOM handlers.
+
+  var noHandlers = [];
+
+  var on = function(emitter, type, f) {
+    if (emitter.addEventListener) {
+      emitter.addEventListener(type, f, false);
+    } else if (emitter.attachEvent) {
+      emitter.attachEvent("on" + type, f);
+    } else {
+      var map$$1 = emitter._handlers || (emitter._handlers = {});
+      map$$1[type] = (map$$1[type] || noHandlers).concat(f);
+    }
+  };
+
+  function getHandlers(emitter, type) {
+    return emitter._handlers && emitter._handlers[type] || noHandlers
+  }
+
+  function off(emitter, type, f) {
+    if (emitter.removeEventListener) {
+      emitter.removeEventListener(type, f, false);
+    } else if (emitter.detachEvent) {
+      emitter.detachEvent("on" + type, f);
+    } else {
+      var map$$1 = emitter._handlers, arr = map$$1 && map$$1[type];
+      if (arr) {
+        var index = indexOf(arr, f);
+        if (index > -1)
+          { map$$1[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }
+      }
+    }
+  }
+
+  function signal(emitter, type /*, values...*/) {
+    var handlers = getHandlers(emitter, type);
+    if (!handlers.length) { return }
+    var args = Array.prototype.slice.call(arguments, 2);
+    for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); }
+  }
+
+  // The DOM events that CodeMirror handles can be overridden by
+  // registering a (non-DOM) handler on the editor for the event name,
+  // and preventDefault-ing the event in that handler.
+  function signalDOMEvent(cm, e, override) {
+    if (typeof e == "string")
+      { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; }
+    signal(cm, override || e.type, cm, e);
+    return e_defaultPrevented(e) || e.codemirrorIgnore
+  }
+
+  function signalCursorActivity(cm) {
+    var arr = cm._handlers && cm._handlers.cursorActivity;
+    if (!arr) { return }
+    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
+    for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)
+      { set.push(arr[i]); } }
+  }
+
+  function hasHandler(emitter, type) {
+    return getHandlers(emitter, type).length > 0
+  }
+
+  // Add on and off methods to a constructor's prototype, to make
+  // registering events on such objects more convenient.
+  function eventMixin(ctor) {
+    ctor.prototype.on = function(type, f) {on(this, type, f);};
+    ctor.prototype.off = function(type, f) {off(this, type, f);};
+  }
+
+  // Due to the fact that we still support jurassic IE versions, some
+  // compatibility wrappers are needed.
+
+  function e_preventDefault(e) {
+    if (e.preventDefault) { e.preventDefault(); }
+    else { e.returnValue = false; }
+  }
+  function e_stopPropagation(e) {
+    if (e.stopPropagation) { e.stopPropagation(); }
+    else { e.cancelBubble = true; }
+  }
+  function e_defaultPrevented(e) {
+    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
+  }
+  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
+
+  function e_target(e) {return e.target || e.srcElement}
+  function e_button(e) {
+    var b = e.which;
+    if (b == null) {
+      if (e.button & 1) { b = 1; }
+      else if (e.button & 2) { b = 3; }
+      else if (e.button & 4) { b = 2; }
+    }
+    if (mac && e.ctrlKey && b == 1) { b = 3; }
+    return b
+  }
+
+  // Detect drag-and-drop
+  var dragAndDrop = function() {
+    // There is *some* kind of drag-and-drop support in IE6-8, but I
+    // couldn't get it to work yet.
+    if (ie && ie_version < 9) { return false }
+    var div = elt('div');
+    return "draggable" in div || "dragDrop" in div
+  }();
+
+  var zwspSupported;
+  function zeroWidthElement(measure) {
+    if (zwspSupported == null) {
+      var test = elt("span", "\u200b");
+      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
+      if (measure.firstChild.offsetHeight != 0)
+        { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); }
+    }
+    var node = zwspSupported ? elt("span", "\u200b") :
+      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
+    node.setAttribute("cm-text", "");
+    return node
+  }
+
+  // Feature-detect IE's crummy client rect reporting for bidi text
+  var badBidiRects;
+  function hasBadBidiRects(measure) {
+    if (badBidiRects != null) { return badBidiRects }
+    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
+    var r0 = range(txt, 0, 1).getBoundingClientRect();
+    var r1 = range(txt, 1, 2).getBoundingClientRect();
+    removeChildren(measure);
+    if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)
+    return badBidiRects = (r1.right - r0.right < 3)
+  }
+
+  // See if "".split is the broken IE version, if so, provide an
+  // alternative way to split lines.
+  var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
+    var pos = 0, result = [], l = string.length;
+    while (pos <= l) {
+      var nl = string.indexOf("\n", pos);
+      if (nl == -1) { nl = string.length; }
+      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
+      var rt = line.indexOf("\r");
+      if (rt != -1) {
+        result.push(line.slice(0, rt));
+        pos += rt + 1;
+      } else {
+        result.push(line);
+        pos = nl + 1;
+      }
+    }
+    return result
+  } : function (string) { return string.split(/\r\n?|\n/); };
+
+  var hasSelection = window.getSelection ? function (te) {
+    try { return te.selectionStart != te.selectionEnd }
+    catch(e) { return false }
+  } : function (te) {
+    var range$$1;
+    try {range$$1 = te.ownerDocument.selection.createRange();}
+    catch(e) {}
+    if (!range$$1 || range$$1.parentElement() != te) { return false }
+    return range$$1.compareEndPoints("StartToEnd", range$$1) != 0
+  };
+
+  var hasCopyEvent = (function () {
+    var e = elt("div");
+    if ("oncopy" in e) { return true }
+    e.setAttribute("oncopy", "return;");
+    return typeof e.oncopy == "function"
+  })();
+
+  var badZoomedRects = null;
+  function hasBadZoomedRects(measure) {
+    if (badZoomedRects != null) { return badZoomedRects }
+    var node = removeChildrenAndAdd(measure, elt("span", "x"));
+    var normal = node.getBoundingClientRect();
+    var fromRange = range(node, 0, 1).getBoundingClientRect();
+    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
+  }
+
+  // Known modes, by name and by MIME
+  var modes = {}, mimeModes = {};
+
+  // Extra arguments are stored as the mode's dependencies, which is
+  // used by (legacy) mechanisms like loadmode.js to automatically
+  // load a mode. (Preferred mechanism is the require/define calls.)
+  function defineMode(name, mode) {
+    if (arguments.length > 2)
+      { mode.dependencies = Array.prototype.slice.call(arguments, 2); }
+    modes[name] = mode;
+  }
+
+  function defineMIME(mime, spec) {
+    mimeModes[mime] = spec;
+  }
+
+  // Given a MIME type, a {name, ...options} config object, or a name
+  // string, return a mode config object.
+  function resolveMode(spec) {
+    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
+      spec = mimeModes[spec];
+    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
+      var found = mimeModes[spec.name];
+      if (typeof found == "string") { found = {name: found}; }
+      spec = createObj(found, spec);
+      spec.name = found.name;
+    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
+      return resolveMode("application/xml")
+    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
+      return resolveMode("application/json")
+    }
+    if (typeof spec == "string") { return {name: spec} }
+    else { return spec || {name: "null"} }
+  }
+
+  // Given a mode spec (anything that resolveMode accepts), find and
+  // initialize an actual mode object.
+  function getMode(options, spec) {
+    spec = resolveMode(spec);
+    var mfactory = modes[spec.name];
+    if (!mfactory) { return getMode(options, "text/plain") }
+    var modeObj = mfactory(options, spec);
+    if (modeExtensions.hasOwnProperty(spec.name)) {
+      var exts = modeExtensions[spec.name];
+      for (var prop in exts) {
+        if (!exts.hasOwnProperty(prop)) { continue }
+        if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop]; }
+        modeObj[prop] = exts[prop];
+      }
+    }
+    modeObj.name = spec.name;
+    if (spec.helperType) { modeObj.helperType = spec.helperType; }
+    if (spec.modeProps) { for (var prop$1 in spec.modeProps)
+      { modeObj[prop$1] = spec.modeProps[prop$1]; } }
+
+    return modeObj
+  }
+
+  // This can be used to attach properties to mode objects from
+  // outside the actual mode definition.
+  var modeExtensions = {};
+  function extendMode(mode, properties) {
+    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
+    copyObj(properties, exts);
+  }
+
+  function copyState(mode, state) {
+    if (state === true) { return state }
+    if (mode.copyState) { return mode.copyState(state) }
+    var nstate = {};
+    for (var n in state) {
+      var val = state[n];
+      if (val instanceof Array) { val = val.concat([]); }
+      nstate[n] = val;
+    }
+    return nstate
+  }
+
+  // Given a mode and a state (for that mode), find the inner mode and
+  // state at the position that the state refers to.
+  function innerMode(mode, state) {
+    var info;
+    while (mode.innerMode) {
+      info = mode.innerMode(state);
+      if (!info || info.mode == mode) { break }
+      state = info.state;
+      mode = info.mode;
+    }
+    return info || {mode: mode, state: state}
+  }
+
+  function startState(mode, a1, a2) {
+    return mode.startState ? mode.startState(a1, a2) : true
+  }
+
+  // STRING STREAM
+
+  // Fed to the mode parsers, provides helper functions to make
+  // parsers more succinct.
+
+  var StringStream = function(string, tabSize, lineOracle) {
+    this.pos = this.start = 0;
+    this.string = string;
+    this.tabSize = tabSize || 8;
+    this.lastColumnPos = this.lastColumnValue = 0;
+    this.lineStart = 0;
+    this.lineOracle = lineOracle;
+  };
+
+  StringStream.prototype.eol = function () {return this.pos >= this.string.length};
+  StringStream.prototype.sol = function () {return this.pos == this.lineStart};
+  StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};
+  StringStream.prototype.next = function () {
+    if (this.pos < this.string.length)
+      { return this.string.charAt(this.pos++) }
+  };
+  StringStream.prototype.eat = function (match) {
+    var ch = this.string.charAt(this.pos);
+    var ok;
+    if (typeof match == "string") { ok = ch == match; }
+    else { ok = ch && (match.test ? match.test(ch) : match(ch)); }
+    if (ok) {++this.pos; return ch}
+  };
+  StringStream.prototype.eatWhile = function (match) {
+    var start = this.pos;
+    while (this.eat(match)){}
+    return this.pos > start
+  };
+  StringStream.prototype.eatSpace = function () {
+      var this$1 = this;
+
+    var start = this.pos;
+    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos; }
+    return this.pos > start
+  };
+  StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};
+  StringStream.prototype.skipTo = function (ch) {
+    var found = this.string.indexOf(ch, this.pos);
+    if (found > -1) {this.pos = found; return true}
+  };
+  StringStream.prototype.backUp = function (n) {this.pos -= n;};
+  StringStream.prototype.column = function () {
+    if (this.lastColumnPos < this.start) {
+      this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
+      this.lastColumnPos = this.start;
+    }
+    return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
+  };
+  StringStream.prototype.indentation = function () {
+    return countColumn(this.string, null, this.tabSize) -
+      (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
+  };
+  StringStream.prototype.match = function (pattern, consume, caseInsensitive) {
+    if (typeof pattern == "string") {
+      var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; };
+      var substr = this.string.substr(this.pos, pattern.length);
+      if (cased(substr) == cased(pattern)) {
+        if (consume !== false) { this.pos += pattern.length; }
+        return true
+      }
+    } else {
+      var match = this.string.slice(this.pos).match(pattern);
+      if (match && match.index > 0) { return null }
+      if (match && consume !== false) { this.pos += match[0].length; }
+      return match
+    }
+  };
+  StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};
+  StringStream.prototype.hideFirstChars = function (n, inner) {
+    this.lineStart += n;
+    try { return inner() }
+    finally { this.lineStart -= n; }
+  };
+  StringStream.prototype.lookAhead = function (n) {
+    var oracle = this.lineOracle;
+    return oracle && oracle.lookAhead(n)
+  };
+  StringStream.prototype.baseToken = function () {
+    var oracle = this.lineOracle;
+    return oracle && oracle.baseToken(this.pos)
+  };
+
+  // Find the line object corresponding to the given line number.
+  function getLine(doc, n) {
+    n -= doc.first;
+    if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") }
+    var chunk = doc;
+    while (!chunk.lines) {
+      for (var i = 0;; ++i) {
+        var child = chunk.children[i], sz = child.chunkSize();
+        if (n < sz) { chunk = child; break }
+        n -= sz;
+      }
+    }
+    return chunk.lines[n]
+  }
+
+  // Get the part of a document between two positions, as an array of
+  // strings.
+  function getBetween(doc, start, end) {
+    var out = [], n = start.line;
+    doc.iter(start.line, end.line + 1, function (line) {
+      var text = line.text;
+      if (n == end.line) { text = text.slice(0, end.ch); }
+      if (n == start.line) { text = text.slice(start.ch); }
+      out.push(text);
+      ++n;
+    });
+    return out
+  }
+  // Get the lines between from and to, as array of strings.
+  function getLines(doc, from, to) {
+    var out = [];
+    doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value
+    return out
+  }
+
+  // Update the height of a line, propagating the height change
+  // upwards to parent nodes.
+  function updateLineHeight(line, height) {
+    var diff = height - line.height;
+    if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } }
+  }
+
+  // Given a line object, find its line number by walking up through
+  // its parent links.
+  function lineNo(line) {
+    if (line.parent == null) { return null }
+    var cur = line.parent, no = indexOf(cur.lines, line);
+    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
+      for (var i = 0;; ++i) {
+        if (chunk.children[i] == cur) { break }
+        no += chunk.children[i].chunkSize();
+      }
+    }
+    return no + cur.first
+  }
+
+  // Find the line at the given vertical position, using the height
+  // information in the document tree.
+  function lineAtHeight(chunk, h) {
+    var n = chunk.first;
+    outer: do {
+      for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
+        var child = chunk.children[i$1], ch = child.height;
+        if (h < ch) { chunk = child; continue outer }
+        h -= ch;
+        n += child.chunkSize();
+      }
+      return n
+    } while (!chunk.lines)
+    var i = 0;
+    for (; i < chunk.lines.length; ++i) {
+      var line = chunk.lines[i], lh = line.height;
+      if (h < lh) { break }
+      h -= lh;
+    }
+    return n + i
+  }
+
+  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}
+
+  function lineNumberFor(options, i) {
+    return String(options.lineNumberFormatter(i + options.firstLineNumber))
+  }
+
+  // A Pos instance represents a position within the text.
+  function Pos(line, ch, sticky) {
+    if ( sticky === void 0 ) sticky = null;
+
+    if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }
+    this.line = line;
+    this.ch = ch;
+    this.sticky = sticky;
+  }
+
+  // Compare two positions, return 0 if they are the same, a negative
+  // number when a is less, and a positive number otherwise.
+  function cmp(a, b) { return a.line - b.line || a.ch - b.ch }
+
+  function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }
+
+  function copyPos(x) {return Pos(x.line, x.ch)}
+  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }
+  function minPos(a, b) { return cmp(a, b) < 0 ? a : b }
+
+  // Most of the external API clips given positions to make sure they
+  // actually exist within the document.
+  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}
+  function clipPos(doc, pos) {
+    if (pos.line < doc.first) { return Pos(doc.first, 0) }
+    var last = doc.first + doc.size - 1;
+    if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }
+    return clipToLen(pos, getLine(doc, pos.line).text.length)
+  }
+  function clipToLen(pos, linelen) {
+    var ch = pos.ch;
+    if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }
+    else if (ch < 0) { return Pos(pos.line, 0) }
+    else { return pos }
+  }
+  function clipPosArray(doc, array) {
+    var out = [];
+    for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); }
+    return out
+  }
+
+  var SavedContext = function(state, lookAhead) {
+    this.state = state;
+    this.lookAhead = lookAhead;
+  };
+
+  var Context = function(doc, state, line, lookAhead) {
+    this.state = state;
+    this.doc = doc;
+    this.line = line;
+    this.maxLookAhead = lookAhead || 0;
+    this.baseTokens = null;
+    this.baseTokenPos = 1;
+  };
+
+  Context.prototype.lookAhead = function (n) {
+    var line = this.doc.getLine(this.line + n);
+    if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; }
+    return line
+  };
+
+  Context.prototype.baseToken = function (n) {
+      var this$1 = this;
+
+    if (!this.baseTokens) { return null }
+    while (this.baseTokens[this.baseTokenPos] <= n)
+      { this$1.baseTokenPos += 2; }
+    var type = this.baseTokens[this.baseTokenPos + 1];
+    return {type: type && type.replace(/( |^)overlay .*/, ""),
+            size: this.baseTokens[this.baseTokenPos] - n}
+  };
+
+  Context.prototype.nextLine = function () {
+    this.line++;
+    if (this.maxLookAhead > 0) { this.maxLookAhead--; }
+  };
+
+  Context.fromSaved = function (doc, saved, line) {
+    if (saved instanceof SavedContext)
+      { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }
+    else
+      { return new Context(doc, copyState(doc.mode, saved), line) }
+  };
+
+  Context.prototype.save = function (copy) {
+    var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;
+    return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state
+  };
+
+
+  // Compute a style array (an array starting with a mode generation
+  // -- for invalidation -- followed by pairs of end positions and
+  // style strings), which is used to highlight the tokens on the
+  // line.
+  function highlightLine(cm, line, context, forceToEnd) {
+    // A styles array always starts with a number identifying the
+    // mode/overlays that it is based on (for easy invalidation).
+    var st = [cm.state.modeGen], lineClasses = {};
+    // Compute the base array of styles
+    runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },
+            lineClasses, forceToEnd);
+    var state = context.state;
+
+    // Run overlays, adjust style array.
+    var loop = function ( o ) {
+      context.baseTokens = st;
+      var overlay = cm.state.overlays[o], i = 1, at = 0;
+      context.state = true;
+      runMode(cm, line.text, overlay.mode, context, function (end, style) {
+        var start = i;
+        // Ensure there's a token end at the current position, and that i points at it
+        while (at < end) {
+          var i_end = st[i];
+          if (i_end > end)
+            { st.splice(i, 1, end, st[i+1], i_end); }
+          i += 2;
+          at = Math.min(end, i_end);
+        }
+        if (!style) { return }
+        if (overlay.opaque) {
+          st.splice(start, i - start, end, "overlay " + style);
+          i = start + 2;
+        } else {
+          for (; start < i; start += 2) {
+            var cur = st[start+1];
+            st[start+1] = (cur ? cur + " " : "") + "overlay " + style;
+          }
+        }
+      }, lineClasses);
+      context.state = state;
+      context.baseTokens = null;
+      context.baseTokenPos = 1;
+    };
+
+    for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );
+
+    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}
+  }
+
+  function getLineStyles(cm, line, updateFrontier) {
+    if (!line.styles || line.styles[0] != cm.state.modeGen) {
+      var context = getContextBefore(cm, lineNo(line));
+      var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);
+      var result = highlightLine(cm, line, context);
+      if (resetState) { context.state = resetState; }
+      line.stateAfter = context.save(!resetState);
+      line.styles = result.styles;
+      if (result.classes) { line.styleClasses = result.classes; }
+      else if (line.styleClasses) { line.styleClasses = null; }
+      if (updateFrontier === cm.doc.highlightFrontier)
+        { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); }
+    }
+    return line.styles
+  }
+
+  function getContextBefore(cm, n, precise) {
+    var doc = cm.doc, display = cm.display;
+    if (!doc.mode.startState) { return new Context(doc, true, n) }
+    var start = findStartLine(cm, n, precise);
+    var saved = start > doc.first && getLine(doc, start - 1).stateAfter;
+    var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);
+
+    doc.iter(start, n, function (line) {
+      processLine(cm, line.text, context);
+      var pos = context.line;
+      line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;
+      context.nextLine();
+    });
+    if (precise) { doc.modeFrontier = context.line; }
+    return context
+  }
+
+  // Lightweight form of highlight -- proceed over this line and
+  // update state, but don't save a style array. Used for lines that
+  // aren't currently visible.
+  function processLine(cm, text, context, startAt) {
+    var mode = cm.doc.mode;
+    var stream = new StringStream(text, cm.options.tabSize, context);
+    stream.start = stream.pos = startAt || 0;
+    if (text == "") { callBlankLine(mode, context.state); }
+    while (!stream.eol()) {
+      readToken(mode, stream, context.state);
+      stream.start = stream.pos;
+    }
+  }
+
+  function callBlankLine(mode, state) {
+    if (mode.blankLine) { return mode.blankLine(state) }
+    if (!mode.innerMode) { return }
+    var inner = innerMode(mode, state);
+    if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }
+  }
+
+  function readToken(mode, stream, state, inner) {
+    for (var i = 0; i < 10; i++) {
+      if (inner) { inner[0] = innerMode(mode, state).mode; }
+      var style = mode.token(stream, state);
+      if (stream.pos > stream.start) { return style }
+    }
+    throw new Error("Mode " + mode.name + " failed to advance stream.")
+  }
+
+  var Token = function(stream, type, state) {
+    this.start = stream.start; this.end = stream.pos;
+    this.string = stream.current();
+    this.type = type || null;
+    this.state = state;
+  };
+
+  // Utility for getTokenAt and getLineTokens
+  function takeToken(cm, pos, precise, asArray) {
+    var doc = cm.doc, mode = doc.mode, style;
+    pos = clipPos(doc, pos);
+    var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise);
+    var stream = new StringStream(line.text, cm.options.tabSize, context), tokens;
+    if (asArray) { tokens = []; }
+    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
+      stream.start = stream.pos;
+      style = readToken(mode, stream, context.state);
+      if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); }
+    }
+    return asArray ? tokens : new Token(stream, style, context.state)
+  }
+
+  function extractLineClasses(type, output) {
+    if (type) { for (;;) {
+      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
+      if (!lineClass) { break }
+      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
+      var prop = lineClass[1] ? "bgClass" : "textClass";
+      if (output[prop] == null)
+        { output[prop] = lineClass[2]; }
+      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
+        { output[prop] += " " + lineClass[2]; }
+    } }
+    return type
+  }
+
+  // Run the given mode's parser over a line, calling f for each token.
+  function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {
+    var flattenSpans = mode.flattenSpans;
+    if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; }
+    var curStart = 0, curStyle = null;
+    var stream = new StringStream(text, cm.options.tabSize, context), style;
+    var inner = cm.options.addModeClass && [null];
+    if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); }
+    while (!stream.eol()) {
+      if (stream.pos > cm.options.maxHighlightLength) {
+        flattenSpans = false;
+        if (forceToEnd) { processLine(cm, text, context, stream.pos); }
+        stream.pos = text.length;
+        style = null;
+      } else {
+        style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);
+      }
+      if (inner) {
+        var mName = inner[0].name;
+        if (mName) { style = "m-" + (style ? mName + " " + style : mName); }
+      }
+      if (!flattenSpans || curStyle != style) {
+        while (curStart < stream.start) {
+          curStart = Math.min(stream.start, curStart + 5000);
+          f(curStart, curStyle);
+        }
+        curStyle = style;
+      }
+      stream.start = stream.pos;
+    }
+    while (curStart < stream.pos) {
+      // Webkit seems to refuse to render text nodes longer than 57444
+      // characters, and returns inaccurate measurements in nodes
+      // starting around 5000 chars.
+      var pos = Math.min(stream.pos, curStart + 5000);
+      f(pos, curStyle);
+      curStart = pos;
+    }
+  }
+
+  // Finds the line to start with when starting a parse. Tries to
+  // find a line with a stateAfter, so that it can start with a
+  // valid state. If that fails, it returns the line with the
+  // smallest indentation, which tends to need the least context to
+  // parse correctly.
+  function findStartLine(cm, n, precise) {
+    var minindent, minline, doc = cm.doc;
+    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
+    for (var search = n; search > lim; --search) {
+      if (search <= doc.first) { return doc.first }
+      var line = getLine(doc, search - 1), after = line.stateAfter;
+      if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))
+        { return search }
+      var indented = countColumn(line.text, null, cm.options.tabSize);
+      if (minline == null || minindent > indented) {
+        minline = search - 1;
+        minindent = indented;
+      }
+    }
+    return minline
+  }
+
+  function retreatFrontier(doc, n) {
+    doc.modeFrontier = Math.min(doc.modeFrontier, n);
+    if (doc.highlightFrontier < n - 10) { return }
+    var start = doc.first;
+    for (var line = n - 1; line > start; line--) {
+      var saved = getLine(doc, line).stateAfter;
+      // change is on 3
+      // state on line 1 looked ahead 2 -- so saw 3
+      // test 1 + 2 < 3 should cover this
+      if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {
+        start = line + 1;
+        break
+      }
+    }
+    doc.highlightFrontier = Math.min(doc.highlightFrontier, start);
+  }
+
+  // Optimize some code when these features are not used.
+  var sawReadOnlySpans = false, sawCollapsedSpans = false;
+
+  function seeReadOnlySpans() {
+    sawReadOnlySpans = true;
+  }
+
+  function seeCollapsedSpans() {
+    sawCollapsedSpans = true;
+  }
+
+  // TEXTMARKER SPANS
+
+  function MarkedSpan(marker, from, to) {
+    this.marker = marker;
+    this.from = from; this.to = to;
+  }
+
+  // Search an array of spans for a span matching the given marker.
+  function getMarkedSpanFor(spans, marker) {
+    if (spans) { for (var i = 0; i < spans.length; ++i) {
+      var span = spans[i];
+      if (span.marker == marker) { return span }
+    } }
+  }
+  // Remove a span from an array, returning undefined if no spans are
+  // left (we don't store arrays for lines without spans).
+  function removeMarkedSpan(spans, span) {
+    var r;
+    for (var i = 0; i < spans.length; ++i)
+      { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } }
+    return r
+  }
+  // Add a span to a line.
+  function addMarkedSpan(line, span) {
+    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
+    span.marker.attachLine(line);
+  }
+
+  // Used for the algorithm that adjusts markers for a change in the
+  // document. These functions cut an array of spans at a given
+  // character position, returning an array of remaining chunks (or
+  // undefined if nothing remains).
+  function markedSpansBefore(old, startCh, isInsert) {
+    var nw;
+    if (old) { for (var i = 0; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
+      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
+        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)
+        ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
+      }
+    } }
+    return nw
+  }
+  function markedSpansAfter(old, endCh, isInsert) {
+    var nw;
+    if (old) { for (var i = 0; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
+      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
+        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)
+        ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
+                                              span.to == null ? null : span.to - endCh));
+      }
+    } }
+    return nw
+  }
+
+  // Given a change object, compute the new set of marker spans that
+  // cover the line in which the change took place. Removes spans
+  // entirely within the change, reconnects spans belonging to the
+  // same marker that appear on both sides of the change, and cuts off
+  // spans partially within the change. Returns an array of span
+  // arrays with one element for each line in (after) the change.
+  function stretchSpansOverChange(doc, change) {
+    if (change.full) { return null }
+    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
+    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
+    if (!oldFirst && !oldLast) { return null }
+
+    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
+    // Get the spans that 'stick out' on both sides
+    var first = markedSpansBefore(oldFirst, startCh, isInsert);
+    var last = markedSpansAfter(oldLast, endCh, isInsert);
+
+    // Next, merge those two ends
+    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
+    if (first) {
+      // Fix up .to properties of first
+      for (var i = 0; i < first.length; ++i) {
+        var span = first[i];
+        if (span.to == null) {
+          var found = getMarkedSpanFor(last, span.marker);
+          if (!found) { span.to = startCh; }
+          else if (sameLine) { span.to = found.to == null ? null : found.to + offset; }
+        }
+      }
+    }
+    if (last) {
+      // Fix up .from in last (or move them into first in case of sameLine)
+      for (var i$1 = 0; i$1 < last.length; ++i$1) {
+        var span$1 = last[i$1];
+        if (span$1.to != null) { span$1.to += offset; }
+        if (span$1.from == null) {
+          var found$1 = getMarkedSpanFor(first, span$1.marker);
+          if (!found$1) {
+            span$1.from = offset;
+            if (sameLine) { (first || (first = [])).push(span$1); }
+          }
+        } else {
+          span$1.from += offset;
+          if (sameLine) { (first || (first = [])).push(span$1); }
+        }
+      }
+    }
+    // Make sure we didn't create any zero-length spans
+    if (first) { first = clearEmptySpans(first); }
+    if (last && last != first) { last = clearEmptySpans(last); }
+
+    var newMarkers = [first];
+    if (!sameLine) {
+      // Fill gap with whole-line-spans
+      var gap = change.text.length - 2, gapMarkers;
+      if (gap > 0 && first)
+        { for (var i$2 = 0; i$2 < first.length; ++i$2)
+          { if (first[i$2].to == null)
+            { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } }
+      for (var i$3 = 0; i$3 < gap; ++i$3)
+        { newMarkers.push(gapMarkers); }
+      newMarkers.push(last);
+    }
+    return newMarkers
+  }
+
+  // Remove spans that are empty and don't have a clearWhenEmpty
+  // option of false.
+  function clearEmptySpans(spans) {
+    for (var i = 0; i < spans.length; ++i) {
+      var span = spans[i];
+      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
+        { spans.splice(i--, 1); }
+    }
+    if (!spans.length) { return null }
+    return spans
+  }
+
+  // Used to 'clip' out readOnly ranges when making a change.
+  function removeReadOnlyRanges(doc, from, to) {
+    var markers = null;
+    doc.iter(from.line, to.line + 1, function (line) {
+      if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
+        var mark = line.markedSpans[i].marker;
+        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
+          { (markers || (markers = [])).push(mark); }
+      } }
+    });
+    if (!markers) { return null }
+    var parts = [{from: from, to: to}];
+    for (var i = 0; i < markers.length; ++i) {
+      var mk = markers[i], m = mk.find(0);
+      for (var j = 0; j < parts.length; ++j) {
+        var p = parts[j];
+        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }
+        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
+        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
+          { newParts.push({from: p.from, to: m.from}); }
+        if (dto > 0 || !mk.inclusiveRight && !dto)
+          { newParts.push({from: m.to, to: p.to}); }
+        parts.splice.apply(parts, newParts);
+        j += newParts.length - 3;
+      }
+    }
+    return parts
+  }
+
+  // Connect or disconnect spans from a line.
+  function detachMarkedSpans(line) {
+    var spans = line.markedSpans;
+    if (!spans) { return }
+    for (var i = 0; i < spans.length; ++i)
+      { spans[i].marker.detachLine(line); }
+    line.markedSpans = null;
+  }
+  function attachMarkedSpans(line, spans) {
+    if (!spans) { return }
+    for (var i = 0; i < spans.length; ++i)
+      { spans[i].marker.attachLine(line); }
+    line.markedSpans = spans;
+  }
+
+  // Helpers used when computing which overlapping collapsed span
+  // counts as the larger one.
+  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }
+  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }
+
+  // Returns a number indicating which of two overlapping collapsed
+  // spans is larger (and thus includes the other). Falls back to
+  // comparing ids when the spans cover exactly the same range.
+  function compareCollapsedMarkers(a, b) {
+    var lenDiff = a.lines.length - b.lines.length;
+    if (lenDiff != 0) { return lenDiff }
+    var aPos = a.find(), bPos = b.find();
+    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
+    if (fromCmp) { return -fromCmp }
+    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
+    if (toCmp) { return toCmp }
+    return b.id - a.id
+  }
+
+  // Find out whether a line ends or starts in a collapsed span. If
+  // so, return the marker for that span.
+  function collapsedSpanAtSide(line, start) {
+    var sps = sawCollapsedSpans && line.markedSpans, found;
+    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
+      sp = sps[i];
+      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
+          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
+        { found = sp.marker; }
+    } }
+    return found
+  }
+  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }
+  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }
+
+  function collapsedSpanAround(line, ch) {
+    var sps = sawCollapsedSpans && line.markedSpans, found;
+    if (sps) { for (var i = 0; i < sps.length; ++i) {
+      var sp = sps[i];
+      if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&
+          (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; }
+    } }
+    return found
+  }
+
+  // Test whether there exists a collapsed span that partially
+  // overlaps (covers the start or end, but not both) of a new span.
+  // Such overlap is not allowed.
+  function conflictingCollapsedRange(doc, lineNo$$1, from, to, marker) {
+    var line = getLine(doc, lineNo$$1);
+    var sps = sawCollapsedSpans && line.markedSpans;
+    if (sps) { for (var i = 0; i < sps.length; ++i) {
+      var sp = sps[i];
+      if (!sp.marker.collapsed) { continue }
+      var found = sp.marker.find(0);
+      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
+      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
+      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }
+      if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
+          fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))
+        { return true }
+    } }
+  }
+
+  // A visual line is a line as drawn on the screen. Folding, for
+  // example, can cause multiple logical lines to appear on the same
+  // visual line. This finds the start of the visual line that the
+  // given line is part of (usually that is the line itself).
+  function visualLine(line) {
+    var merged;
+    while (merged = collapsedSpanAtStart(line))
+      { line = merged.find(-1, true).line; }
+    return line
+  }
+
+  function visualLineEnd(line) {
+    var merged;
+    while (merged = collapsedSpanAtEnd(line))
+      { line = merged.find(1, true).line; }
+    return line
+  }
+
+  // Returns an array of logical lines that continue the visual line
+  // started by the argument, or undefined if there are no such lines.
+  function visualLineContinued(line) {
+    var merged, lines;
+    while (merged = collapsedSpanAtEnd(line)) {
+      line = merged.find(1, true).line
+      ;(lines || (lines = [])).push(line);
+    }
+    return lines
+  }
+
+  // Get the line number of the start of the visual line that the
+  // given line number is part of.
+  function visualLineNo(doc, lineN) {
+    var line = getLine(doc, lineN), vis = visualLine(line);
+    if (line == vis) { return lineN }
+    return lineNo(vis)
+  }
+
+  // Get the line number of the start of the next visual line after
+  // the given line.
+  function visualLineEndNo(doc, lineN) {
+    if (lineN > doc.lastLine()) { return lineN }
+    var line = getLine(doc, lineN), merged;
+    if (!lineIsHidden(doc, line)) { return lineN }
+    while (merged = collapsedSpanAtEnd(line))
+      { line = merged.find(1, true).line; }
+    return lineNo(line) + 1
+  }
+
+  // Compute whether a line is hidden. Lines count as hidden when they
+  // are part of a visual line that starts with another line, or when
+  // they are entirely covered by collapsed, non-widget span.
+  function lineIsHidden(doc, line) {
+    var sps = sawCollapsedSpans && line.markedSpans;
+    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
+      sp = sps[i];
+      if (!sp.marker.collapsed) { continue }
+      if (sp.from == null) { return true }
+      if (sp.marker.widgetNode) { continue }
+      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
+        { return true }
+    } }
+  }
+  function lineIsHiddenInner(doc, line, span) {
+    if (span.to == null) {
+      var end = span.marker.find(1, true);
+      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
+    }
+    if (span.marker.inclusiveRight && span.to == line.text.length)
+      { return true }
+    for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
+      sp = line.markedSpans[i];
+      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
+          (sp.to == null || sp.to != span.from) &&
+          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
+          lineIsHiddenInner(doc, line, sp)) { return true }
+    }
+  }
+
+  // Find the height above the given line.
+  function heightAtLine(lineObj) {
+    lineObj = visualLine(lineObj);
+
+    var h = 0, chunk = lineObj.parent;
+    for (var i = 0; i < chunk.lines.length; ++i) {
+      var line = chunk.lines[i];
+      if (line == lineObj) { break }
+      else { h += line.height; }
+    }
+    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
+      for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
+        var cur = p.children[i$1];
+        if (cur == chunk) { break }
+        else { h += cur.height; }
+      }
+    }
+    return h
+  }
+
+  // Compute the character length of a line, taking into account
+  // collapsed ranges (see markText) that might hide parts, and join
+  // other lines onto it.
+  function lineLength(line) {
+    if (line.height == 0) { return 0 }
+    var len = line.text.length, merged, cur = line;
+    while (merged = collapsedSpanAtStart(cur)) {
+      var found = merged.find(0, true);
+      cur = found.from.line;
+      len += found.from.ch - found.to.ch;
+    }
+    cur = line;
+    while (merged = collapsedSpanAtEnd(cur)) {
+      var found$1 = merged.find(0, true);
+      len -= cur.text.length - found$1.from.ch;
+      cur = found$1.to.line;
+      len += cur.text.length - found$1.to.ch;
+    }
+    return len
+  }
+
+  // Find the longest line in the document.
+  function findMaxLine(cm) {
+    var d = cm.display, doc = cm.doc;
+    d.maxLine = getLine(doc, doc.first);
+    d.maxLineLength = lineLength(d.maxLine);
+    d.maxLineChanged = true;
+    doc.iter(function (line) {
+      var len = lineLength(line);
+      if (len > d.maxLineLength) {
+        d.maxLineLength = len;
+        d.maxLine = line;
+      }
+    });
+  }
+
+  // LINE DATA STRUCTURE
+
+  // Line objects. These hold state related to a line, including
+  // highlighting info (the styles array).
+  var Line = function(text, markedSpans, estimateHeight) {
+    this.text = text;
+    attachMarkedSpans(this, markedSpans);
+    this.height = estimateHeight ? estimateHeight(this) : 1;
+  };
+
+  Line.prototype.lineNo = function () { return lineNo(this) };
+  eventMixin(Line);
+
+  // Change the content (text, markers) of a line. Automatically
+  // invalidates cached information and tries to re-estimate the
+  // line's height.
+  function updateLine(line, text, markedSpans, estimateHeight) {
+    line.text = text;
+    if (line.stateAfter) { line.stateAfter = null; }
+    if (line.styles) { line.styles = null; }
+    if (line.order != null) { line.order = null; }
+    detachMarkedSpans(line);
+    attachMarkedSpans(line, markedSpans);
+    var estHeight = estimateHeight ? estimateHeight(line) : 1;
+    if (estHeight != line.height) { updateLineHeight(line, estHeight); }
+  }
+
+  // Detach a line from the document tree and its markers.
+  function cleanUpLine(line) {
+    line.parent = null;
+    detachMarkedSpans(line);
+  }
+
+  // Convert a style as returned by a mode (either null, or a string
+  // containing one or more styles) to a CSS style. This is cached,
+  // and also looks for line-wide styles.
+  var styleToClassCache = {}, styleToClassCacheWithMode = {};
+  function interpretTokenStyle(style, options) {
+    if (!style || /^\s*$/.test(style)) { return null }
+    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
+    return cache[style] ||
+      (cache[style] = style.replace(/\S+/g, "cm-$&"))
+  }
+
+  // Render the DOM representation of the text of a line. Also builds
+  // up a 'line map', which points at the DOM nodes that represent
+  // specific stretches of text, and is used by the measuring code.
+  // The returned object contains the DOM node, this map, and
+  // information about line-wide styles that were set by the mode.
+  function buildLineContent(cm, lineView) {
+    // The padding-right forces the element to have a 'border', which
+    // is needed on Webkit to be able to get line-level bounding
+    // rectangles for it (in measureChar).
+    var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null);
+    var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content,
+                   col: 0, pos: 0, cm: cm,
+                   trailingSpace: false,
+                   splitSpaces: cm.getOption("lineWrapping")};
+    lineView.measure = {};
+
+    // Iterate over the logical lines that make up this visual line.
+    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
+      var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0);
+      builder.pos = 0;
+      builder.addToken = buildToken;
+      // Optionally wire in some hacks into the token-rendering
+      // algorithm, to deal with browser quirks.
+      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))
+        { builder.addToken = buildTokenBadBidi(builder.addToken, order); }
+      builder.map = [];
+      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
+      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
+      if (line.styleClasses) {
+        if (line.styleClasses.bgClass)
+          { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); }
+        if (line.styleClasses.textClass)
+          { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); }
+      }
+
+      // Ensure at least a single node is present, for measuring.
+      if (builder.map.length == 0)
+        { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); }
+
+      // Store the map and a cache object for the current logical line
+      if (i == 0) {
+        lineView.measure.map = builder.map;
+        lineView.measure.cache = {};
+      } else {
+  (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)
+        ;(lineView.measure.caches || (lineView.measure.caches = [])).push({});
+      }
+    }
+
+    // See issue #2901
+    if (webkit) {
+      var last = builder.content.lastChild;
+      if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab")))
+        { builder.content.className = "cm-tab-wrap-hack"; }
+    }
+
+    signal(cm, "renderLine", cm, lineView.line, builder.pre);
+    if (builder.pre.className)
+      { builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); }
+
+    return builder
+  }
+
+  function defaultSpecialCharPlaceholder(ch) {
+    var token = elt("span", "\u2022", "cm-invalidchar");
+    token.title = "\\u" + ch.charCodeAt(0).toString(16);
+    token.setAttribute("aria-label", token.title);
+    return token
+  }
+
+  // Build up the DOM representation for a single token, and add it to
+  // the line map. Takes care to render special characters separately.
+  function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {
+    if (!text) { return }
+    var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;
+    var special = builder.cm.state.specialChars, mustWrap = false;
+    var content;
+    if (!special.test(text)) {
+      builder.col += text.length;
+      content = document.createTextNode(displayText);
+      builder.map.push(builder.pos, builder.pos + text.length, content);
+      if (ie && ie_version < 9) { mustWrap = true; }
+      builder.pos += text.length;
+    } else {
+      content = document.createDocumentFragment();
+      var pos = 0;
+      while (true) {
+        special.lastIndex = pos;
+        var m = special.exec(text);
+        var skipped = m ? m.index - pos : text.length - pos;
+        if (skipped) {
+          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
+          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])); }
+          else { content.appendChild(txt); }
+          builder.map.push(builder.pos, builder.pos + skipped, txt);
+          builder.col += skipped;
+          builder.pos += skipped;
+        }
+        if (!m) { break }
+        pos += skipped + 1;
+        var txt$1 = (void 0);
+        if (m[0] == "\t") {
+          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
+          txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
+          txt$1.setAttribute("role", "presentation");
+          txt$1.setAttribute("cm-text", "\t");
+          builder.col += tabWidth;
+        } else if (m[0] == "\r" || m[0] == "\n") {
+          txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
+          txt$1.setAttribute("cm-text", m[0]);
+          builder.col += 1;
+        } else {
+          txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);
+          txt$1.setAttribute("cm-text", m[0]);
+          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])); }
+          else { content.appendChild(txt$1); }
+          builder.col += 1;
+        }
+        builder.map.push(builder.pos, builder.pos + 1, txt$1);
+        builder.pos++;
+      }
+    }
+    builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;
+    if (style || startStyle || endStyle || mustWrap || css) {
+      var fullStyle = style || "";
+      if (startStyle) { fullStyle += startStyle; }
+      if (endStyle) { fullStyle += endStyle; }
+      var token = elt("span", [content], fullStyle, css);
+      if (attributes) {
+        for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class")
+          { token.setAttribute(attr, attributes[attr]); } }
+      }
+      return builder.content.appendChild(token)
+    }
+    builder.content.appendChild(content);
+  }
+
+  // Change some spaces to NBSP to prevent the browser from collapsing
+  // trailing spaces at the end of a line when rendering text (issue #1362).
+  function splitSpaces(text, trailingBefore) {
+    if (text.length > 1 && !/  /.test(text)) { return text }
+    var spaceBefore = trailingBefore, result = "";
+    for (var i = 0; i < text.length; i++) {
+      var ch = text.charAt(i);
+      if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
+        { ch = "\u00a0"; }
+      result += ch;
+      spaceBefore = ch == " ";
+    }
+    return result
+  }
+
+  // Work around nonsense dimensions being reported for stretches of
+  // right-to-left text.
+  function buildTokenBadBidi(inner, order) {
+    return function (builder, text, style, startStyle, endStyle, css, attributes) {
+      style = style ? style + " cm-force-border" : "cm-force-border";
+      var start = builder.pos, end = start + text.length;
+      for (;;) {
+        // Find the part that overlaps with the start of this text
+        var part = (void 0);
+        for (var i = 0; i < order.length; i++) {
+          part = order[i];
+          if (part.to > start && part.from <= start) { break }
+        }
+        if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) }
+        inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);
+        startStyle = null;
+        text = text.slice(part.to - start);
+        start = part.to;
+      }
+    }
+  }
+
+  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
+    var widget = !ignoreWidget && marker.widgetNode;
+    if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); }
+    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
+      if (!widget)
+        { widget = builder.content.appendChild(document.createElement("span")); }
+      widget.setAttribute("cm-marker", marker.id);
+    }
+    if (widget) {
+      builder.cm.display.input.setUneditable(widget);
+      builder.content.appendChild(widget);
+    }
+    builder.pos += size;
+    builder.trailingSpace = false;
+  }
+
+  // Outputs a number of spans to make up a line, taking highlighting
+  // and marked text into account.
+  function insertLineContent(line, builder, styles) {
+    var spans = line.markedSpans, allText = line.text, at = 0;
+    if (!spans) {
+      for (var i$1 = 1; i$1 < styles.length; i$1+=2)
+        { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); }
+      return
+    }
+
+    var len = allText.length, pos = 0, i = 1, text = "", style, css;
+    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;
+    for (;;) {
+      if (nextChange == pos) { // Update current marker set
+        spanStyle = spanEndStyle = spanStartStyle = css = "";
+        attributes = null;
+        collapsed = null; nextChange = Infinity;
+        var foundBookmarks = [], endStyles = (void 0);
+        for (var j = 0; j < spans.length; ++j) {
+          var sp = spans[j], m = sp.marker;
+          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
+            foundBookmarks.push(m);
+          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
+            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
+              nextChange = sp.to;
+              spanEndStyle = "";
+            }
+            if (m.className) { spanStyle += " " + m.className; }
+            if (m.css) { css = (css ? css + ";" : "") + m.css; }
+            if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle; }
+            if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); }
+            // support for the old title property
+            // https://github.com/codemirror/CodeMirror/pull/5673
+            if (m.title) { (attributes || (attributes = {})).title = m.title; }
+            if (m.attributes) {
+              for (var attr in m.attributes)
+                { (attributes || (attributes = {}))[attr] = m.attributes[attr]; }
+            }
+            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
+              { collapsed = sp; }
+          } else if (sp.from > pos && nextChange > sp.from) {
+            nextChange = sp.from;
+          }
+        }
+        if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)
+          { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1]; } } }
+
+        if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)
+          { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } }
+        if (collapsed && (collapsed.from || 0) == pos) {
+          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
+                             collapsed.marker, collapsed.from == null);
+          if (collapsed.to == null) { return }
+          if (collapsed.to == pos) { collapsed = false; }
+        }
+      }
+      if (pos >= len) { break }
+
+      var upto = Math.min(len, nextChange);
+      while (true) {
+        if (text) {
+          var end = pos + text.length;
+          if (!collapsed) {
+            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
+            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
+                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes);
+          }
+          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}
+          pos = end;
+          spanStartStyle = "";
+        }
+        text = allText.slice(at, at = styles[i++]);
+        style = interpretTokenStyle(styles[i++], builder.cm.options);
+      }
+    }
+  }
+
+
+  // These objects are used to represent the visible (currently drawn)
+  // part of the document. A LineView may correspond to multiple
+  // logical lines, if those are connected by collapsed ranges.
+  function LineView(doc, line, lineN) {
+    // The starting line
+    this.line = line;
+    // Continuing lines, if any
+    this.rest = visualLineContinued(line);
+    // Number of logical lines in this visual line
+    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
+    this.node = this.text = null;
+    this.hidden = lineIsHidden(doc, line);
+  }
+
+  // Create a range of LineView objects for the given lines.
+  function buildViewArray(cm, from, to) {
+    var array = [], nextPos;
+    for (var pos = from; pos < to; pos = nextPos) {
+      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
+      nextPos = pos + view.size;
+      array.push(view);
+    }
+    return array
+  }
+
+  var operationGroup = null;
+
+  function pushOperation(op) {
+    if (operationGroup) {
+      operationGroup.ops.push(op);
+    } else {
+      op.ownsGroup = operationGroup = {
+        ops: [op],
+        delayedCallbacks: []
+      };
+    }
+  }
+
+  function fireCallbacksForOps(group) {
+    // Calls delayed callbacks and cursorActivity handlers until no
+    // new ones appear
+    var callbacks = group.delayedCallbacks, i = 0;
+    do {
+      for (; i < callbacks.length; i++)
+        { callbacks[i].call(null); }
+      for (var j = 0; j < group.ops.length; j++) {
+        var op = group.ops[j];
+        if (op.cursorActivityHandlers)
+          { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
+            { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } }
+      }
+    } while (i < callbacks.length)
+  }
+
+  function finishOperation(op, endCb) {
+    var group = op.ownsGroup;
+    if (!group) { return }
+
+    try { fireCallbacksForOps(group); }
+    finally {
+      operationGroup = null;
+      endCb(group);
+    }
+  }
+
+  var orphanDelayedCallbacks = null;
+
+  // Often, we want to signal events at a point where we are in the
+  // middle of some work, but don't want the handler to start calling
+  // other methods on the editor, which might be in an inconsistent
+  // state or simply not expect any other events to happen.
+  // signalLater looks whether there are any handlers, and schedules
+  // them to be executed when the last operation ends, or, if no
+  // operation is active, when a timeout fires.
+  function signalLater(emitter, type /*, values...*/) {
+    var arr = getHandlers(emitter, type);
+    if (!arr.length) { return }
+    var args = Array.prototype.slice.call(arguments, 2), list;
+    if (operationGroup) {
+      list = operationGroup.delayedCallbacks;
+    } else if (orphanDelayedCallbacks) {
+      list = orphanDelayedCallbacks;
+    } else {
+      list = orphanDelayedCallbacks = [];
+      setTimeout(fireOrphanDelayed, 0);
+    }
+    var loop = function ( i ) {
+      list.push(function () { return arr[i].apply(null, args); });
+    };
+
+    for (var i = 0; i < arr.length; ++i)
+      loop( i );
+  }
+
+  function fireOrphanDelayed() {
+    var delayed = orphanDelayedCallbacks;
+    orphanDelayedCallbacks = null;
+    for (var i = 0; i < delayed.length; ++i) { delayed[i](); }
+  }
+
+  // When an aspect of a line changes, a string is added to
+  // lineView.changes. This updates the relevant part of the line's
+  // DOM structure.
+  function updateLineForChanges(cm, lineView, lineN, dims) {
+    for (var j = 0; j < lineView.changes.length; j++) {
+      var type = lineView.changes[j];
+      if (type == "text") { updateLineText(cm, lineView); }
+      else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims); }
+      else if (type == "class") { updateLineClasses(cm, lineView); }
+      else if (type == "widget") { updateLineWidgets(cm, lineView, dims); }
+    }
+    lineView.changes = null;
+  }
+
+  // Lines with gutter elements, widgets or a background class need to
+  // be wrapped, and have the extra elements added to the wrapper div
+  function ensureLineWrapped(lineView) {
+    if (lineView.node == lineView.text) {
+      lineView.node = elt("div", null, null, "position: relative");
+      if (lineView.text.parentNode)
+        { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); }
+      lineView.node.appendChild(lineView.text);
+      if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; }
+    }
+    return lineView.node
+  }
+
+  function updateLineBackground(cm, lineView) {
+    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
+    if (cls) { cls += " CodeMirror-linebackground"; }
+    if (lineView.background) {
+      if (cls) { lineView.background.className = cls; }
+      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
+    } else if (cls) {
+      var wrap = ensureLineWrapped(lineView);
+      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
+      cm.display.input.setUneditable(lineView.background);
+    }
+  }
+
+  // Wrapper around buildLineContent which will reuse the structure
+  // in display.externalMeasured when possible.
+  function getLineContent(cm, lineView) {
+    var ext = cm.display.externalMeasured;
+    if (ext && ext.line == lineView.line) {
+      cm.display.externalMeasured = null;
+      lineView.measure = ext.measure;
+      return ext.built
+    }
+    return buildLineContent(cm, lineView)
+  }
+
+  // Redraw the line's text. Interacts with the background and text
+  // classes because the mode may output tokens that influence these
+  // classes.
+  function updateLineText(cm, lineView) {
+    var cls = lineView.text.className;
+    var built = getLineContent(cm, lineView);
+    if (lineView.text == lineView.node) { lineView.node = built.pre; }
+    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
+    lineView.text = built.pre;
+    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
+      lineView.bgClass = built.bgClass;
+      lineView.textClass = built.textClass;
+      updateLineClasses(cm, lineView);
+    } else if (cls) {
+      lineView.text.className = cls;
+    }
+  }
+
+  function updateLineClasses(cm, lineView) {
+    updateLineBackground(cm, lineView);
+    if (lineView.line.wrapClass)
+      { ensureLineWrapped(lineView).className = lineView.line.wrapClass; }
+    else if (lineView.node != lineView.text)
+      { lineView.node.className = ""; }
+    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
+    lineView.text.className = textClass || "";
+  }
+
+  function updateLineGutter(cm, lineView, lineN, dims) {
+    if (lineView.gutter) {
+      lineView.node.removeChild(lineView.gutter);
+      lineView.gutter = null;
+    }
+    if (lineView.gutterBackground) {
+      lineView.node.removeChild(lineView.gutterBackground);
+      lineView.gutterBackground = null;
+    }
+    if (lineView.line.gutterClass) {
+      var wrap = ensureLineWrapped(lineView);
+      lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
+                                      ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"));
+      cm.display.input.setUneditable(lineView.gutterBackground);
+      wrap.insertBefore(lineView.gutterBackground, lineView.text);
+    }
+    var markers = lineView.line.gutterMarkers;
+    if (cm.options.lineNumbers || markers) {
+      var wrap$1 = ensureLineWrapped(lineView);
+      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"));
+      cm.display.input.setUneditable(gutterWrap);
+      wrap$1.insertBefore(gutterWrap, lineView.text);
+      if (lineView.line.gutterClass)
+        { gutterWrap.className += " " + lineView.line.gutterClass; }
+      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
+        { lineView.lineNumber = gutterWrap.appendChild(
+          elt("div", lineNumberFor(cm.options, lineN),
+              "CodeMirror-linenumber CodeMirror-gutter-elt",
+              ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))); }
+      if (markers) { for (var k = 0; k < cm.display.gutterSpecs.length; ++k) {
+        var id = cm.display.gutterSpecs[k].className, found = markers.hasOwnProperty(id) && markers[id];
+        if (found)
+          { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
+                                     ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))); }
+      } }
+    }
+  }
+
+  function updateLineWidgets(cm, lineView, dims) {
+    if (lineView.alignable) { lineView.alignable = null; }
+    var isWidget = classTest("CodeMirror-linewidget");
+    for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
+      next = node.nextSibling;
+      if (isWidget.test(node.className)) { lineView.node.removeChild(node); }
+    }
+    insertLineWidgets(cm, lineView, dims);
+  }
+
+  // Build a line's DOM representation from scratch
+  function buildLineElement(cm, lineView, lineN, dims) {
+    var built = getLineContent(cm, lineView);
+    lineView.text = lineView.node = built.pre;
+    if (built.bgClass) { lineView.bgClass = built.bgClass; }
+    if (built.textClass) { lineView.textClass = built.textClass; }
+
+    updateLineClasses(cm, lineView);
+    updateLineGutter(cm, lineView, lineN, dims);
+    insertLineWidgets(cm, lineView, dims);
+    return lineView.node
+  }
+
+  // A lineView may contain multiple logical lines (when merged by
+  // collapsed spans). The widgets for all of them need to be drawn.
+  function insertLineWidgets(cm, lineView, dims) {
+    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
+    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
+      { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } }
+  }
+
+  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
+    if (!line.widgets) { return }
+    var wrap = ensureLineWrapped(lineView);
+    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
+      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget" + (widget.className ? " " + widget.className : ""));
+      if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); }
+      positionLineWidget(widget, node, lineView, dims);
+      cm.display.input.setUneditable(node);
+      if (allowAbove && widget.above)
+        { wrap.insertBefore(node, lineView.gutter || lineView.text); }
+      else
+        { wrap.appendChild(node); }
+      signalLater(widget, "redraw");
+    }
+  }
+
+  function positionLineWidget(widget, node, lineView, dims) {
+    if (widget.noHScroll) {
+  (lineView.alignable || (lineView.alignable = [])).push(node);
+      var width = dims.wrapperWidth;
+      node.style.left = dims.fixedPos + "px";
+      if (!widget.coverGutter) {
+        width -= dims.gutterTotalWidth;
+        node.style.paddingLeft = dims.gutterTotalWidth + "px";
+      }
+      node.style.width = width + "px";
+    }
+    if (widget.coverGutter) {
+      node.style.zIndex = 5;
+      node.style.position = "relative";
+      if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px"; }
+    }
+  }
+
+  function widgetHeight(widget) {
+    if (widget.height != null) { return widget.height }
+    var cm = widget.doc.cm;
+    if (!cm) { return 0 }
+    if (!contains(document.body, widget.node)) {
+      var parentStyle = "position: relative;";
+      if (widget.coverGutter)
+        { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; }
+      if (widget.noHScroll)
+        { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; }
+      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
+    }
+    return widget.height = widget.node.parentNode.offsetHeight
+  }
+
+  // Return true when the given mouse event happened in a widget
+  function eventInWidget(display, e) {
+    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
+      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
+          (n.parentNode == display.sizer && n != display.mover))
+        { return true }
+    }
+  }
+
+  // POSITION MEASUREMENT
+
+  function paddingTop(display) {return display.lineSpace.offsetTop}
+  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}
+  function paddingH(display) {
+    if (display.cachedPaddingH) { return display.cachedPaddingH }
+    var e = removeChildrenAndAdd(display.measure, elt("pre", "x", "CodeMirror-line-like"));
+    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
+    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
+    if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; }
+    return data
+  }
+
+  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }
+  function displayWidth(cm) {
+    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
+  }
+  function displayHeight(cm) {
+    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
+  }
+
+  // Ensure the lineView.wrapping.heights array is populated. This is
+  // an array of bottom offsets for the lines that make up a drawn
+  // line. When lineWrapping is on, there might be more than one
+  // height.
+  function ensureLineHeights(cm, lineView, rect) {
+    var wrapping = cm.options.lineWrapping;
+    var curWidth = wrapping && displayWidth(cm);
+    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
+      var heights = lineView.measure.heights = [];
+      if (wrapping) {
+        lineView.measure.width = curWidth;
+        var rects = lineView.text.firstChild.getClientRects();
+        for (var i = 0; i < rects.length - 1; i++) {
+          var cur = rects[i], next = rects[i + 1];
+          if (Math.abs(cur.bottom - next.bottom) > 2)
+            { heights.push((cur.bottom + next.top) / 2 - rect.top); }
+        }
+      }
+      heights.push(rect.bottom - rect.top);
+    }
+  }
+
+  // Find a line map (mapping character offsets to text nodes) and a
+  // measurement cache for the given line number. (A line view might
+  // contain multiple lines when collapsed ranges are present.)
+  function mapFromLineView(lineView, line, lineN) {
+    if (lineView.line == line)
+      { return {map: lineView.measure.map, cache: lineView.measure.cache} }
+    for (var i = 0; i < lineView.rest.length; i++)
+      { if (lineView.rest[i] == line)
+        { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }
+    for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)
+      { if (lineNo(lineView.rest[i$1]) > lineN)
+        { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }
+  }
+
+  // Render a line into the hidden node display.externalMeasured. Used
+  // when measurement is needed for a line that's not in the viewport.
+  function updateExternalMeasurement(cm, line) {
+    line = visualLine(line);
+    var lineN = lineNo(line);
+    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
+    view.lineN = lineN;
+    var built = view.built = buildLineContent(cm, view);
+    view.text = built.pre;
+    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
+    return view
+  }
+
+  // Get a {top, bottom, left, right} box (in line-local coordinates)
+  // for a given character.
+  function measureChar(cm, line, ch, bias) {
+    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
+  }
+
+  // Find a line view that corresponds to the given line number.
+  function findViewForLine(cm, lineN) {
+    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
+      { return cm.display.view[findViewIndex(cm, lineN)] }
+    var ext = cm.display.externalMeasured;
+    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
+      { return ext }
+  }
+
+  // Measurement can be split in two steps, the set-up work that
+  // applies to the whole line, and the measurement of the actual
+  // character. Functions like coordsChar, that need to do a lot of
+  // measurements in a row, can thus ensure that the set-up work is
+  // only done once.
+  function prepareMeasureForLine(cm, line) {
+    var lineN = lineNo(line);
+    var view = findViewForLine(cm, lineN);
+    if (view && !view.text) {
+      view = null;
+    } else if (view && view.changes) {
+      updateLineForChanges(cm, view, lineN, getDimensions(cm));
+      cm.curOp.forceUpdate = true;
+    }
+    if (!view)
+      { view = updateExternalMeasurement(cm, line); }
+
+    var info = mapFromLineView(view, line, lineN);
+    return {
+      line: line, view: view, rect: null,
+      map: info.map, cache: info.cache, before: info.before,
+      hasHeights: false
+    }
+  }
+
+  // Given a prepared measurement object, measures the position of an
+  // actual character (or fetches it from the cache).
+  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
+    if (prepared.before) { ch = -1; }
+    var key = ch + (bias || ""), found;
+    if (prepared.cache.hasOwnProperty(key)) {
+      found = prepared.cache[key];
+    } else {
+      if (!prepared.rect)
+        { prepared.rect = prepared.view.text.getBoundingClientRect(); }
+      if (!prepared.hasHeights) {
+        ensureLineHeights(cm, prepared.view, prepared.rect);
+        prepared.hasHeights = true;
+      }
+      found = measureCharInner(cm, prepared, ch, bias);
+      if (!found.bogus) { prepared.cache[key] = found; }
+    }
+    return {left: found.left, right: found.right,
+            top: varHeight ? found.rtop : found.top,
+            bottom: varHeight ? found.rbottom : found.bottom}
+  }
+
+  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
+
+  function nodeAndOffsetInLineMap(map$$1, ch, bias) {
+    var node, start, end, collapse, mStart, mEnd;
+    // First, search the line map for the text node corresponding to,
+    // or closest to, the target character.
+    for (var i = 0; i < map$$1.length; i += 3) {
+      mStart = map$$1[i];
+      mEnd = map$$1[i + 1];
+      if (ch < mStart) {
+        start = 0; end = 1;
+        collapse = "left";
+      } else if (ch < mEnd) {
+        start = ch - mStart;
+        end = start + 1;
+      } else if (i == map$$1.length - 3 || ch == mEnd && map$$1[i + 3] > ch) {
+        end = mEnd - mStart;
+        start = end - 1;
+        if (ch >= mEnd) { collapse = "right"; }
+      }
+      if (start != null) {
+        node = map$$1[i + 2];
+        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
+          { collapse = bias; }
+        if (bias == "left" && start == 0)
+          { while (i && map$$1[i - 2] == map$$1[i - 3] && map$$1[i - 1].insertLeft) {
+            node = map$$1[(i -= 3) + 2];
+            collapse = "left";
+          } }
+        if (bias == "right" && start == mEnd - mStart)
+          { while (i < map$$1.length - 3 && map$$1[i + 3] == map$$1[i + 4] && !map$$1[i + 5].insertLeft) {
+            node = map$$1[(i += 3) + 2];
+            collapse = "right";
+          } }
+        break
+      }
+    }
+    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}
+  }
+
+  function getUsefulRect(rects, bias) {
+    var rect = nullRect;
+    if (bias == "left") { for (var i = 0; i < rects.length; i++) {
+      if ((rect = rects[i]).left != rect.right) { break }
+    } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
+      if ((rect = rects[i$1]).left != rect.right) { break }
+    } }
+    return rect
+  }
+
+  function measureCharInner(cm, prepared, ch, bias) {
+    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
+    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;
+
+    var rect;
+    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
+      for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
+        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; }
+        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; }
+        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
+          { rect = node.parentNode.getBoundingClientRect(); }
+        else
+          { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); }
+        if (rect.left || rect.right || start == 0) { break }
+        end = start;
+        start = start - 1;
+        collapse = "right";
+      }
+      if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); }
+    } else { // If it is a widget, simply get the box for the whole widget.
+      if (start > 0) { collapse = bias = "right"; }
+      var rects;
+      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
+        { rect = rects[bias == "right" ? rects.length - 1 : 0]; }
+      else
+        { rect = node.getBoundingClientRect(); }
+    }
+    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
+      var rSpan = node.parentNode.getClientRects()[0];
+      if (rSpan)
+        { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; }
+      else
+        { rect = nullRect; }
+    }
+
+    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
+    var mid = (rtop + rbot) / 2;
+    var heights = prepared.view.measure.heights;
+    var i = 0;
+    for (; i < heights.length - 1; i++)
+      { if (mid < heights[i]) { break } }
+    var top = i ? heights[i - 1] : 0, bot = heights[i];
+    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
+                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
+                  top: top, bottom: bot};
+    if (!rect.left && !rect.right) { result.bogus = true; }
+    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }
+
+    return result
+  }
+
+  // Work around problem with bounding client rects on ranges being
+  // returned incorrectly when zoomed on IE10 and below.
+  function maybeUpdateRectForZooming(measure, rect) {
+    if (!window.screen || screen.logicalXDPI == null ||
+        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
+      { return rect }
+    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
+    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
+    return {left: rect.left * scaleX, right: rect.right * scaleX,
+            top: rect.top * scaleY, bottom: rect.bottom * scaleY}
+  }
+
+  function clearLineMeasurementCacheFor(lineView) {
+    if (lineView.measure) {
+      lineView.measure.cache = {};
+      lineView.measure.heights = null;
+      if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
+        { lineView.measure.caches[i] = {}; } }
+    }
+  }
+
+  function clearLineMeasurementCache(cm) {
+    cm.display.externalMeasure = null;
+    removeChildren(cm.display.lineMeasure);
+    for (var i = 0; i < cm.display.view.length; i++)
+      { clearLineMeasurementCacheFor(cm.display.view[i]); }
+  }
+
+  function clearCaches(cm) {
+    clearLineMeasurementCache(cm);
+    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
+    if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; }
+    cm.display.lineNumChars = null;
+  }
+
+  function pageScrollX() {
+    // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206
+    // which causes page_Offset and bounding client rects to use
+    // different reference viewports and invalidate our calculations.
+    if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) }
+    return window.pageXOffset || (document.documentElement || document.body).scrollLeft
+  }
+  function pageScrollY() {
+    if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) }
+    return window.pageYOffset || (document.documentElement || document.body).scrollTop
+  }
+
+  function widgetTopHeight(lineObj) {
+    var height = 0;
+    if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above)
+      { height += widgetHeight(lineObj.widgets[i]); } } }
+    return height
+  }
+
+  // Converts a {top, bottom, left, right} box from line-local
+  // coordinates into another coordinate system. Context may be one of
+  // "line", "div" (display.lineDiv), "local"./null (editor), "window",
+  // or "page".
+  function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
+    if (!includeWidgets) {
+      var height = widgetTopHeight(lineObj);
+      rect.top += height; rect.bottom += height;
+    }
+    if (context == "line") { return rect }
+    if (!context) { context = "local"; }
+    var yOff = heightAtLine(lineObj);
+    if (context == "local") { yOff += paddingTop(cm.display); }
+    else { yOff -= cm.display.viewOffset; }
+    if (context == "page" || context == "window") {
+      var lOff = cm.display.lineSpace.getBoundingClientRect();
+      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
+      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
+      rect.left += xOff; rect.right += xOff;
+    }
+    rect.top += yOff; rect.bottom += yOff;
+    return rect
+  }
+
+  // Coverts a box from "div" coords to another coordinate system.
+  // Context may be "window", "page", "div", or "local"./null.
+  function fromCoordSystem(cm, coords, context) {
+    if (context == "div") { return coords }
+    var left = coords.left, top = coords.top;
+    // First move into "page" coordinate system
+    if (context == "page") {
+      left -= pageScrollX();
+      top -= pageScrollY();
+    } else if (context == "local" || !context) {
+      var localBox = cm.display.sizer.getBoundingClientRect();
+      left += localBox.left;
+      top += localBox.top;
+    }
+
+    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
+    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}
+  }
+
+  function charCoords(cm, pos, context, lineObj, bias) {
+    if (!lineObj) { lineObj = getLine(cm.doc, pos.line); }
+    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
+  }
+
+  // Returns a box for a given cursor position, which may have an
+  // 'other' property containing the position of the secondary cursor
+  // on a bidi boundary.
+  // A cursor Pos(line, char, "before") is on the same visual line as `char - 1`
+  // and after `char - 1` in writing order of `char - 1`
+  // A cursor Pos(line, char, "after") is on the same visual line as `char`
+  // and before `char` in writing order of `char`
+  // Examples (upper-case letters are RTL, lower-case are LTR):
+  //     Pos(0, 1, ...)
+  //     before   after
+  // ab     a|b     a|b
+  // aB     a|B     aB|
+  // Ab     |Ab     A|b
+  // AB     B|A     B|A
+  // Every position after the last character on a line is considered to stick
+  // to the last character on the line.
+  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
+    lineObj = lineObj || getLine(cm.doc, pos.line);
+    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
+    function get(ch, right) {
+      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
+      if (right) { m.left = m.right; } else { m.right = m.left; }
+      return intoCoordSystem(cm, lineObj, m, context)
+    }
+    var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky;
+    if (ch >= lineObj.text.length) {
+      ch = lineObj.text.length;
+      sticky = "before";
+    } else if (ch <= 0) {
+      ch = 0;
+      sticky = "after";
+    }
+    if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") }
+
+    function getBidi(ch, partPos, invert) {
+      var part = order[partPos], right = part.level == 1;
+      return get(invert ? ch - 1 : ch, right != invert)
+    }
+    var partPos = getBidiPartAt(order, ch, sticky);
+    var other = bidiOther;
+    var val = getBidi(ch, partPos, sticky == "before");
+    if (other != null) { val.other = getBidi(ch, other, sticky != "before"); }
+    return val
+  }
+
+  // Used to cheaply estimate the coordinates for a position. Used for
+  // intermediate scroll updates.
+  function estimateCoords(cm, pos) {
+    var left = 0;
+    pos = clipPos(cm.doc, pos);
+    if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; }
+    var lineObj = getLine(cm.doc, pos.line);
+    var top = heightAtLine(lineObj) + paddingTop(cm.display);
+    return {left: left, right: left, top: top, bottom: top + lineObj.height}
+  }
+
+  // Positions returned by coordsChar contain some extra information.
+  // xRel is the relative x position of the input coordinates compared
+  // to the found position (so xRel > 0 means the coordinates are to
+  // the right of the character position, for example). When outside
+  // is true, that means the coordinates lie outside the line's
+  // vertical range.
+  function PosWithInfo(line, ch, sticky, outside, xRel) {
+    var pos = Pos(line, ch, sticky);
+    pos.xRel = xRel;
+    if (outside) { pos.outside = outside; }
+    return pos
+  }
+
+  // Compute the character position closest to the given coordinates.
+  // Input must be lineSpace-local ("div" coordinate system).
+  function coordsChar(cm, x, y) {
+    var doc = cm.doc;
+    y += cm.display.viewOffset;
+    if (y < 0) { return PosWithInfo(doc.first, 0, null, -1, -1) }
+    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
+    if (lineN > last)
+      { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, 1, 1) }
+    if (x < 0) { x = 0; }
+
+    var lineObj = getLine(doc, lineN);
+    for (;;) {
+      var found = coordsCharInner(cm, lineObj, lineN, x, y);
+      var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 || found.outside > 0 ? 1 : 0));
+      if (!collapsed) { return found }
+      var rangeEnd = collapsed.find(1);
+      if (rangeEnd.line == lineN) { return rangeEnd }
+      lineObj = getLine(doc, lineN = rangeEnd.line);
+    }
+  }
+
+  function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {
+    y -= widgetTopHeight(lineObj);
+    var end = lineObj.text.length;
+    var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0);
+    end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end);
+    return {begin: begin, end: end}
+  }
+
+  function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {
+    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
+    var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top;
+    return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)
+  }
+
+  // Returns true if the given side of a box is after the given
+  // coordinates, in top-to-bottom, left-to-right order.
+  function boxIsAfter(box, x, y, left) {
+    return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
+  }
+
+  function coordsCharInner(cm, lineObj, lineNo$$1, x, y) {
+    // Move y into line-local coordinate space
+    y -= heightAtLine(lineObj);
+    var preparedMeasure = prepareMeasureForLine(cm, lineObj);
+    // When directly calling `measureCharPrepared`, we have to adjust
+    // for the widgets at this line.
+    var widgetHeight$$1 = widgetTopHeight(lineObj);
+    var begin = 0, end = lineObj.text.length, ltr = true;
+
+    var order = getOrder(lineObj, cm.doc.direction);
+    // If the line isn't plain left-to-right text, first figure out
+    // which bidi section the coordinates fall into.
+    if (order) {
+      var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
+                   (cm, lineObj, lineNo$$1, preparedMeasure, order, x, y);
+      ltr = part.level != 1;
+      // The awkward -1 offsets are needed because findFirst (called
+      // on these below) will treat its first bound as inclusive,
+      // second as exclusive, but we want to actually address the
+      // characters in the part's range
+      begin = ltr ? part.from : part.to - 1;
+      end = ltr ? part.to : part.from - 1;
+    }
+
+    // A binary search to find the first character whose bounding box
+    // starts after the coordinates. If we run across any whose box wrap
+    // the coordinates, store that.
+    var chAround = null, boxAround = null;
+    var ch = findFirst(function (ch) {
+      var box = measureCharPrepared(cm, preparedMeasure, ch);
+      box.top += widgetHeight$$1; box.bottom += widgetHeight$$1;
+      if (!boxIsAfter(box, x, y, false)) { return false }
+      if (box.top <= y && box.left <= x) {
+        chAround = ch;
+        boxAround = box;
+      }
+      return true
+    }, begin, end);
+
+    var baseX, sticky, outside = false;
+    // If a box around the coordinates was found, use that
+    if (boxAround) {
+      // Distinguish coordinates nearer to the left or right side of the box
+      var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr;
+      ch = chAround + (atStart ? 0 : 1);
+      sticky = atStart ? "after" : "before";
+      baseX = atLeft ? boxAround.left : boxAround.right;
+    } else {
+      // (Adjust for extended bound, if necessary.)
+      if (!ltr && (ch == end || ch == begin)) { ch++; }
+      // To determine which side to associate with, get the box to the
+      // left of the character and compare it's vertical position to the
+      // coordinates
+      sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
+        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight$$1 <= y) == ltr ?
+        "after" : "before";
+      // Now get accurate coordinates for this place, in order to get a
+      // base X position
+      var coords = cursorCoords(cm, Pos(lineNo$$1, ch, sticky), "line", lineObj, preparedMeasure);
+      baseX = coords.left;
+      outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0;
+    }
+
+    ch = skipExtendingChars(lineObj.text, ch, 1);
+    return PosWithInfo(lineNo$$1, ch, sticky, outside, x - baseX)
+  }
+
+  function coordsBidiPart(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y) {
+    // Bidi parts are sorted left-to-right, and in a non-line-wrapping
+    // situation, we can take this ordering to correspond to the visual
+    // ordering. This finds the first part whose end is after the given
+    // coordinates.
+    var index = findFirst(function (i) {
+      var part = order[i], ltr = part.level != 1;
+      return boxIsAfter(cursorCoords(cm, Pos(lineNo$$1, ltr ? part.to : part.from, ltr ? "before" : "after"),
+                                     "line", lineObj, preparedMeasure), x, y, true)
+    }, 0, order.length - 1);
+    var part = order[index];
+    // If this isn't the first part, the part's start is also after
+    // the coordinates, and the coordinates aren't on the same line as
+    // that start, move one part back.
+    if (index > 0) {
+      var ltr = part.level != 1;
+      var start = cursorCoords(cm, Pos(lineNo$$1, ltr ? part.from : part.to, ltr ? "after" : "before"),
+                               "line", lineObj, preparedMeasure);
+      if (boxIsAfter(start, x, y, true) && start.top > y)
+        { part = order[index - 1]; }
+    }
+    return part
+  }
+
+  function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {
+    // In a wrapped line, rtl text on wrapping boundaries can do things
+    // that don't correspond to the ordering in our `order` array at
+    // all, so a binary search doesn't work, and we want to return a
+    // part that only spans one line so that the binary search in
+    // coordsCharInner is safe. As such, we first find the extent of the
+    // wrapped line, and then do a flat search in which we discard any
+    // spans that aren't on the line.
+    var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);
+    var begin = ref.begin;
+    var end = ref.end;
+    if (/\s/.test(lineObj.text.charAt(end - 1))) { end--; }
+    var part = null, closestDist = null;
+    for (var i = 0; i < order.length; i++) {
+      var p = order[i];
+      if (p.from >= end || p.to <= begin) { continue }
+      var ltr = p.level != 1;
+      var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;
+      // Weigh against spans ending before this, so that they are only
+      // picked if nothing ends after
+      var dist = endX < x ? x - endX + 1e9 : endX - x;
+      if (!part || closestDist > dist) {
+        part = p;
+        closestDist = dist;
+      }
+    }
+    if (!part) { part = order[order.length - 1]; }
+    // Clip the part to the wrapped line.
+    if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; }
+    if (part.to > end) { part = {from: part.from, to: end, level: part.level}; }
+    return part
+  }
+
+  var measureText;
+  // Compute the default text height.
+  function textHeight(display) {
+    if (display.cachedTextHeight != null) { return display.cachedTextHeight }
+    if (measureText == null) {
+      measureText = elt("pre", null, "CodeMirror-line-like");
+      // Measure a bunch of lines, for browsers that compute
+      // fractional heights.
+      for (var i = 0; i < 49; ++i) {
+        measureText.appendChild(document.createTextNode("x"));
+        measureText.appendChild(elt("br"));
+      }
+      measureText.appendChild(document.createTextNode("x"));
+    }
+    removeChildrenAndAdd(display.measure, measureText);
+    var height = measureText.offsetHeight / 50;
+    if (height > 3) { display.cachedTextHeight = height; }
+    removeChildren(display.measure);
+    return height || 1
+  }
+
+  // Compute the default character width.
+  function charWidth(display) {
+    if (display.cachedCharWidth != null) { return display.cachedCharWidth }
+    var anchor = elt("span", "xxxxxxxxxx");
+    var pre = elt("pre", [anchor], "CodeMirror-line-like");
+    removeChildrenAndAdd(display.measure, pre);
+    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
+    if (width > 2) { display.cachedCharWidth = width; }
+    return width || 10
+  }
+
+  // Do a bulk-read of the DOM positions and sizes needed to draw the
+  // view, so that we don't interleave reading and writing to the DOM.
+  function getDimensions(cm) {
+    var d = cm.display, left = {}, width = {};
+    var gutterLeft = d.gutters.clientLeft;
+    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
+      var id = cm.display.gutterSpecs[i].className;
+      left[id] = n.offsetLeft + n.clientLeft + gutterLeft;
+      width[id] = n.clientWidth;
+    }
+    return {fixedPos: compensateForHScroll(d),
+            gutterTotalWidth: d.gutters.offsetWidth,
+            gutterLeft: left,
+            gutterWidth: width,
+            wrapperWidth: d.wrapper.clientWidth}
+  }
+
+  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
+  // but using getBoundingClientRect to get a sub-pixel-accurate
+  // result.
+  function compensateForHScroll(display) {
+    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
+  }
+
+  // Returns a function that estimates the height of a line, to use as
+  // first approximation until the line becomes visible (and is thus
+  // properly measurable).
+  function estimateHeight(cm) {
+    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
+    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
+    return function (line) {
+      if (lineIsHidden(cm.doc, line)) { return 0 }
+
+      var widgetsHeight = 0;
+      if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {
+        if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; }
+      } }
+
+      if (wrapping)
+        { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }
+      else
+        { return widgetsHeight + th }
+    }
+  }
+
+  function estimateLineHeights(cm) {
+    var doc = cm.doc, est = estimateHeight(cm);
+    doc.iter(function (line) {
+      var estHeight = est(line);
+      if (estHeight != line.height) { updateLineHeight(line, estHeight); }
+    });
+  }
+
+  // Given a mouse event, find the corresponding position. If liberal
+  // is false, it checks whether a gutter or scrollbar was clicked,
+  // and returns null if it was. forRect is used by rectangular
+  // selections, and tries to estimate a character position even for
+  // coordinates beyond the right of the text.
+  function posFromMouse(cm, e, liberal, forRect) {
+    var display = cm.display;
+    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null }
+
+    var x, y, space = display.lineSpace.getBoundingClientRect();
+    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
+    try { x = e.clientX - space.left; y = e.clientY - space.top; }
+    catch (e) { return null }
+    var coords = coordsChar(cm, x, y), line;
+    if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
+      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
+      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
+    }
+    return coords
+  }
+
+  // Find the view element corresponding to a given line. Return null
+  // when the line isn't visible.
+  function findViewIndex(cm, n) {
+    if (n >= cm.display.viewTo) { return null }
+    n -= cm.display.viewFrom;
+    if (n < 0) { return null }
+    var view = cm.display.view;
+    for (var i = 0; i < view.length; i++) {
+      n -= view[i].size;
+      if (n < 0) { return i }
+    }
+  }
+
+  // Updates the display.view data structure for a given change to the
+  // document. From and to are in pre-change coordinates. Lendiff is
+  // the amount of lines added or subtracted by the change. This is
+  // used for changes that span multiple lines, or change the way
+  // lines are divided into visual lines. regLineChange (below)
+  // registers single-line changes.
+  function regChange(cm, from, to, lendiff) {
+    if (from == null) { from = cm.doc.first; }
+    if (to == null) { to = cm.doc.first + cm.doc.size; }
+    if (!lendiff) { lendiff = 0; }
+
+    var display = cm.display;
+    if (lendiff && to < display.viewTo &&
+        (display.updateLineNumbers == null || display.updateLineNumbers > from))
+      { display.updateLineNumbers = from; }
+
+    cm.curOp.viewChanged = true;
+
+    if (from >= display.viewTo) { // Change after
+      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
+        { resetView(cm); }
+    } else if (to <= display.viewFrom) { // Change before
+      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
+        resetView(cm);
+      } else {
+        display.viewFrom += lendiff;
+        display.viewTo += lendiff;
+      }
+    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
+      resetView(cm);
+    } else if (from <= display.viewFrom) { // Top overlap
+      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
+      if (cut) {
+        display.view = display.view.slice(cut.index);
+        display.viewFrom = cut.lineN;
+        display.viewTo += lendiff;
+      } else {
+        resetView(cm);
+      }
+    } else if (to >= display.viewTo) { // Bottom overlap
+      var cut$1 = viewCuttingPoint(cm, from, from, -1);
+      if (cut$1) {
+        display.view = display.view.slice(0, cut$1.index);
+        display.viewTo = cut$1.lineN;
+      } else {
+        resetView(cm);
+      }
+    } else { // Gap in the middle
+      var cutTop = viewCuttingPoint(cm, from, from, -1);
+      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
+      if (cutTop && cutBot) {
+        display.view = display.view.slice(0, cutTop.index)
+          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
+          .concat(display.view.slice(cutBot.index));
+        display.viewTo += lendiff;
+      } else {
+        resetView(cm);
+      }
+    }
+
+    var ext = display.externalMeasured;
+    if (ext) {
+      if (to < ext.lineN)
+        { ext.lineN += lendiff; }
+      else if (from < ext.lineN + ext.size)
+        { display.externalMeasured = null; }
+    }
+  }
+
+  // Register a change to a single line. Type must be one of "text",
+  // "gutter", "class", "widget"
+  function regLineChange(cm, line, type) {
+    cm.curOp.viewChanged = true;
+    var display = cm.display, ext = cm.display.externalMeasured;
+    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
+      { display.externalMeasured = null; }
+
+    if (line < display.viewFrom || line >= display.viewTo) { return }
+    var lineView = display.view[findViewIndex(cm, line)];
+    if (lineView.node == null) { return }
+    var arr = lineView.changes || (lineView.changes = []);
+    if (indexOf(arr, type) == -1) { arr.push(type); }
+  }
+
+  // Clear the view.
+  function resetView(cm) {
+    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
+    cm.display.view = [];
+    cm.display.viewOffset = 0;
+  }
+
+  function viewCuttingPoint(cm, oldN, newN, dir) {
+    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
+    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
+      { return {index: index, lineN: newN} }
+    var n = cm.display.viewFrom;
+    for (var i = 0; i < index; i++)
+      { n += view[i].size; }
+    if (n != oldN) {
+      if (dir > 0) {
+        if (index == view.length - 1) { return null }
+        diff = (n + view[index].size) - oldN;
+        index++;
+      } else {
+        diff = n - oldN;
+      }
+      oldN += diff; newN += diff;
+    }
+    while (visualLineNo(cm.doc, newN) != newN) {
+      if (index == (dir < 0 ? 0 : view.length - 1)) { return null }
+      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
+      index += dir;
+    }
+    return {index: index, lineN: newN}
+  }
+
+  // Force the view to cover a given range, adding empty view element
+  // or clipping off existing ones as needed.
+  function adjustView(cm, from, to) {
+    var display = cm.display, view = display.view;
+    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
+      display.view = buildViewArray(cm, from, to);
+      display.viewFrom = from;
+    } else {
+      if (display.viewFrom > from)
+        { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); }
+      else if (display.viewFrom < from)
+        { display.view = display.view.slice(findViewIndex(cm, from)); }
+      display.viewFrom = from;
+      if (display.viewTo < to)
+        { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); }
+      else if (display.viewTo > to)
+        { display.view = display.view.slice(0, findViewIndex(cm, to)); }
+    }
+    display.viewTo = to;
+  }
+
+  // Count the number of lines in the view whose DOM representation is
+  // out of date (or nonexistent).
+  function countDirtyView(cm) {
+    var view = cm.display.view, dirty = 0;
+    for (var i = 0; i < view.length; i++) {
+      var lineView = view[i];
+      if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; }
+    }
+    return dirty
+  }
+
+  function updateSelection(cm) {
+    cm.display.input.showSelection(cm.display.input.prepareSelection());
+  }
+
+  function prepareSelection(cm, primary) {
+    if ( primary === void 0 ) primary = true;
+
+    var doc = cm.doc, result = {};
+    var curFragment = result.cursors = document.createDocumentFragment();
+    var selFragment = result.selection = document.createDocumentFragment();
+
+    for (var i = 0; i < doc.sel.ranges.length; i++) {
+      if (!primary && i == doc.sel.primIndex) { continue }
+      var range$$1 = doc.sel.ranges[i];
+      if (range$$1.from().line >= cm.display.viewTo || range$$1.to().line < cm.display.viewFrom) { continue }
+      var collapsed = range$$1.empty();
+      if (collapsed || cm.options.showCursorWhenSelecting)
+        { drawSelectionCursor(cm, range$$1.head, curFragment); }
+      if (!collapsed)
+        { drawSelectionRange(cm, range$$1, selFragment); }
+    }
+    return result
+  }
+
+  // Draws a cursor for the given range
+  function drawSelectionCursor(cm, head, output) {
+    var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);
+
+    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
+    cursor.style.left = pos.left + "px";
+    cursor.style.top = pos.top + "px";
+    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
+
+    if (pos.other) {
+      // Secondary cursor, shown when on a 'jump' in bi-directional text
+      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
+      otherCursor.style.display = "";
+      otherCursor.style.left = pos.other.left + "px";
+      otherCursor.style.top = pos.other.top + "px";
+      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
+    }
+  }
+
+  function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }
+
+  // Draws the given range as a highlighted selection
+  function drawSelectionRange(cm, range$$1, output) {
+    var display = cm.display, doc = cm.doc;
+    var fragment = document.createDocumentFragment();
+    var padding = paddingH(cm.display), leftSide = padding.left;
+    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
+    var docLTR = doc.direction == "ltr";
+
+    function add(left, top, width, bottom) {
+      if (top < 0) { top = 0; }
+      top = Math.round(top);
+      bottom = Math.round(bottom);
+      fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n                             top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n                             height: " + (bottom - top) + "px")));
+    }
+
+    function drawForLine(line, fromArg, toArg) {
+      var lineObj = getLine(doc, line);
+      var lineLen = lineObj.text.length;
+      var start, end;
+      function coords(ch, bias) {
+        return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
+      }
+
+      function wrapX(pos, dir, side) {
+        var extent = wrappedLineExtentChar(cm, lineObj, null, pos);
+        var prop = (dir == "ltr") == (side == "after") ? "left" : "right";
+        var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);
+        return coords(ch, prop)[prop]
+      }
+
+      var order = getOrder(lineObj, doc.direction);
+      iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {
+        var ltr = dir == "ltr";
+        var fromPos = coords(from, ltr ? "left" : "right");
+        var toPos = coords(to - 1, ltr ? "right" : "left");
+
+        var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen;
+        var first = i == 0, last = !order || i == order.length - 1;
+        if (toPos.top - fromPos.top <= 3) { // Single line
+          var openLeft = (docLTR ? openStart : openEnd) && first;
+          var openRight = (docLTR ? openEnd : openStart) && last;
+          var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;
+          var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;
+          add(left, fromPos.top, right - left, fromPos.bottom);
+        } else { // Multiple lines
+          var topLeft, topRight, botLeft, botRight;
+          if (ltr) {
+            topLeft = docLTR && openStart && first ? leftSide : fromPos.left;
+            topRight = docLTR ? rightSide : wrapX(from, dir, "before");
+            botLeft = docLTR ? leftSide : wrapX(to, dir, "after");
+            botRight = docLTR && openEnd && last ? rightSide : toPos.right;
+          } else {
+            topLeft = !docLTR ? leftSide : wrapX(from, dir, "before");
+            topRight = !docLTR && openStart && first ? rightSide : fromPos.right;
+            botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;
+            botRight = !docLTR ? rightSide : wrapX(to, dir, "after");
+          }
+          add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);
+          if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); }
+          add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);
+        }
+
+        if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; }
+        if (cmpCoords(toPos, start) < 0) { start = toPos; }
+        if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; }
+        if (cmpCoords(toPos, end) < 0) { end = toPos; }
+      });
+      return {start: start, end: end}
+    }
+
+    var sFrom = range$$1.from(), sTo = range$$1.to();
+    if (sFrom.line == sTo.line) {
+      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
+    } else {
+      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
+      var singleVLine = visualLine(fromLine) == visualLine(toLine);
+      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
+      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
+      if (singleVLine) {
+        if (leftEnd.top < rightStart.top - 2) {
+          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
+          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
+        } else {
+          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
+        }
+      }
+      if (leftEnd.bottom < rightStart.top)
+        { add(leftSide, leftEnd.bottom, null, rightStart.top); }
+    }
+
+    output.appendChild(fragment);
+  }
+
+  // Cursor-blinking
+  function restartBlink(cm) {
+    if (!cm.state.focused) { return }
+    var display = cm.display;
+    clearInterval(display.blinker);
+    var on = true;
+    display.cursorDiv.style.visibility = "";
+    if (cm.options.cursorBlinkRate > 0)
+      { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; },
+        cm.options.cursorBlinkRate); }
+    else if (cm.options.cursorBlinkRate < 0)
+      { display.cursorDiv.style.visibility = "hidden"; }
+  }
+
+  function ensureFocus(cm) {
+    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
+  }
+
+  function delayBlurEvent(cm) {
+    cm.state.delayingBlurEvent = true;
+    setTimeout(function () { if (cm.state.delayingBlurEvent) {
+      cm.state.delayingBlurEvent = false;
+      onBlur(cm);
+    } }, 100);
+  }
+
+  function onFocus(cm, e) {
+    if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false; }
+
+    if (cm.options.readOnly == "nocursor") { return }
+    if (!cm.state.focused) {
+      signal(cm, "focus", cm, e);
+      cm.state.focused = true;
+      addClass(cm.display.wrapper, "CodeMirror-focused");
+      // This test prevents this from firing when a context
+      // menu is closed (since the input reset would kill the
+      // select-all detection hack)
+      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
+        cm.display.input.reset();
+        if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730
+      }
+      cm.display.input.receivedFocus();
+    }
+    restartBlink(cm);
+  }
+  function onBlur(cm, e) {
+    if (cm.state.delayingBlurEvent) { return }
+
+    if (cm.state.focused) {
+      signal(cm, "blur", cm, e);
+      cm.state.focused = false;
+      rmClass(cm.display.wrapper, "CodeMirror-focused");
+    }
+    clearInterval(cm.display.blinker);
+    setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150);
+  }
+
+  // Read the actual heights of the rendered lines, and update their
+  // stored heights to match.
+  function updateHeightsInViewport(cm) {
+    var display = cm.display;
+    var prevBottom = display.lineDiv.offsetTop;
+    for (var i = 0; i < display.view.length; i++) {
+      var cur = display.view[i], wrapping = cm.options.lineWrapping;
+      var height = (void 0), width = 0;
+      if (cur.hidden) { continue }
+      if (ie && ie_version < 8) {
+        var bot = cur.node.offsetTop + cur.node.offsetHeight;
+        height = bot - prevBottom;
+        prevBottom = bot;
+      } else {
+        var box = cur.node.getBoundingClientRect();
+        height = box.bottom - box.top;
+        // Check that lines don't extend past the right of the current
+        // editor width
+        if (!wrapping && cur.text.firstChild)
+          { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; }
+      }
+      var diff = cur.line.height - height;
+      if (diff > .005 || diff < -.005) {
+        updateLineHeight(cur.line, height);
+        updateWidgetHeight(cur.line);
+        if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
+          { updateWidgetHeight(cur.rest[j]); } }
+      }
+      if (width > cm.display.sizerWidth) {
+        var chWidth = Math.ceil(width / charWidth(cm.display));
+        if (chWidth > cm.display.maxLineLength) {
+          cm.display.maxLineLength = chWidth;
+          cm.display.maxLine = cur.line;
+          cm.display.maxLineChanged = true;
+        }
+      }
+    }
+  }
+
+  // Read and store the height of line widgets associated with the
+  // given line.
+  function updateWidgetHeight(line) {
+    if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {
+      var w = line.widgets[i], parent = w.node.parentNode;
+      if (parent) { w.height = parent.offsetHeight; }
+    } }
+  }
+
+  // Compute the lines that are visible in a given viewport (defaults
+  // the the current scroll position). viewport may contain top,
+  // height, and ensure (see op.scrollToPos) properties.
+  function visibleLines(display, doc, viewport) {
+    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
+    top = Math.floor(top - paddingTop(display));
+    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;
+
+    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
+    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
+    // forces those lines into the viewport (if possible).
+    if (viewport && viewport.ensure) {
+      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
+      if (ensureFrom < from) {
+        from = ensureFrom;
+        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
+      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
+        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
+        to = ensureTo;
+      }
+    }
+    return {from: from, to: Math.max(to, from + 1)}
+  }
+
+  // SCROLLING THINGS INTO VIEW
+
+  // If an editor sits on the top or bottom of the window, partially
+  // scrolled out of view, this ensures that the cursor is visible.
+  function maybeScrollWindow(cm, rect) {
+    if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }
+
+    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
+    if (rect.top + box.top < 0) { doScroll = true; }
+    else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false; }
+    if (doScroll != null && !phantom) {
+      var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;"));
+      cm.display.lineSpace.appendChild(scrollNode);
+      scrollNode.scrollIntoView(doScroll);
+      cm.display.lineSpace.removeChild(scrollNode);
+    }
+  }
+
+  // Scroll a given position into view (immediately), verifying that
+  // it actually became visible (as line heights are accurately
+  // measured, the position of something may 'drift' during drawing).
+  function scrollPosIntoView(cm, pos, end, margin) {
+    if (margin == null) { margin = 0; }
+    var rect;
+    if (!cm.options.lineWrapping && pos == end) {
+      // Set pos and end to the cursor positions around the character pos sticks to
+      // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch
+      // If pos == Pos(_, 0, "before"), pos and end are unchanged
+      pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos;
+      end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos;
+    }
+    for (var limit = 0; limit < 5; limit++) {
+      var changed = false;
+      var coords = cursorCoords(cm, pos);
+      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
+      rect = {left: Math.min(coords.left, endCoords.left),
+              top: Math.min(coords.top, endCoords.top) - margin,
+              right: Math.max(coords.left, endCoords.left),
+              bottom: Math.max(coords.bottom, endCoords.bottom) + margin};
+      var scrollPos = calculateScrollPos(cm, rect);
+      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
+      if (scrollPos.scrollTop != null) {
+        updateScrollTop(cm, scrollPos.scrollTop);
+        if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; }
+      }
+      if (scrollPos.scrollLeft != null) {
+        setScrollLeft(cm, scrollPos.scrollLeft);
+        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; }
+      }
+      if (!changed) { break }
+    }
+    return rect
+  }
+
+  // Scroll a given set of coordinates into view (immediately).
+  function scrollIntoView(cm, rect) {
+    var scrollPos = calculateScrollPos(cm, rect);
+    if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); }
+    if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); }
+  }
+
+  // Calculate a new scroll position needed to scroll the given
+  // rectangle into view. Returns an object with scrollTop and
+  // scrollLeft properties. When these are undefined, the
+  // vertical/horizontal position does not need to be adjusted.
+  function calculateScrollPos(cm, rect) {
+    var display = cm.display, snapMargin = textHeight(cm.display);
+    if (rect.top < 0) { rect.top = 0; }
+    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
+    var screen = displayHeight(cm), result = {};
+    if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; }
+    var docBottom = cm.doc.height + paddingVert(display);
+    var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin;
+    if (rect.top < screentop) {
+      result.scrollTop = atTop ? 0 : rect.top;
+    } else if (rect.bottom > screentop + screen) {
+      var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);
+      if (newTop != screentop) { result.scrollTop = newTop; }
+    }
+
+    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
+    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
+    var tooWide = rect.right - rect.left > screenw;
+    if (tooWide) { rect.right = rect.left + screenw; }
+    if (rect.left < 10)
+      { result.scrollLeft = 0; }
+    else if (rect.left < screenleft)
+      { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)); }
+    else if (rect.right > screenw + screenleft - 3)
+      { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; }
+    return result
+  }
+
+  // Store a relative adjustment to the scroll position in the current
+  // operation (to be applied when the operation finishes).
+  function addToScrollTop(cm, top) {
+    if (top == null) { return }
+    resolveScrollToPos(cm);
+    cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
+  }
+
+  // Make sure that at the end of the operation the current cursor is
+  // shown.
+  function ensureCursorVisible(cm) {
+    resolveScrollToPos(cm);
+    var cur = cm.getCursor();
+    cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin};
+  }
+
+  function scrollToCoords(cm, x, y) {
+    if (x != null || y != null) { resolveScrollToPos(cm); }
+    if (x != null) { cm.curOp.scrollLeft = x; }
+    if (y != null) { cm.curOp.scrollTop = y; }
+  }
+
+  function scrollToRange(cm, range$$1) {
+    resolveScrollToPos(cm);
+    cm.curOp.scrollToPos = range$$1;
+  }
+
+  // When an operation has its scrollToPos property set, and another
+  // scroll action is applied before the end of the operation, this
+  // 'simulates' scrolling that position into view in a cheap way, so
+  // that the effect of intermediate scroll commands is not ignored.
+  function resolveScrollToPos(cm) {
+    var range$$1 = cm.curOp.scrollToPos;
+    if (range$$1) {
+      cm.curOp.scrollToPos = null;
+      var from = estimateCoords(cm, range$$1.from), to = estimateCoords(cm, range$$1.to);
+      scrollToCoordsRange(cm, from, to, range$$1.margin);
+    }
+  }
+
+  function scrollToCoordsRange(cm, from, to, margin) {
+    var sPos = calculateScrollPos(cm, {
+      left: Math.min(from.left, to.left),
+      top: Math.min(from.top, to.top) - margin,
+      right: Math.max(from.right, to.right),
+      bottom: Math.max(from.bottom, to.bottom) + margin
+    });
+    scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);
+  }
+
+  // Sync the scrollable area and scrollbars, ensure the viewport
+  // covers the visible area.
+  function updateScrollTop(cm, val) {
+    if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
+    if (!gecko) { updateDisplaySimple(cm, {top: val}); }
+    setScrollTop(cm, val, true);
+    if (gecko) { updateDisplaySimple(cm); }
+    startWorker(cm, 100);
+  }
+
+  function setScrollTop(cm, val, forceScroll) {
+    val = Math.max(0, Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val));
+    if (cm.display.scroller.scrollTop == val && !forceScroll) { return }
+    cm.doc.scrollTop = val;
+    cm.display.scrollbars.setScrollTop(val);
+    if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; }
+  }
+
+  // Sync scroller and scrollbar, ensure the gutter elements are
+  // aligned.
+  function setScrollLeft(cm, val, isScroller, forceScroll) {
+    val = Math.max(0, Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth));
+    if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }
+    cm.doc.scrollLeft = val;
+    alignHorizontally(cm);
+    if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; }
+    cm.display.scrollbars.setScrollLeft(val);
+  }
+
+  // SCROLLBARS
+
+  // Prepare DOM reads needed to update the scrollbars. Done in one
+  // shot to minimize update/measure roundtrips.
+  function measureForScrollbars(cm) {
+    var d = cm.display, gutterW = d.gutters.offsetWidth;
+    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
+    return {
+      clientHeight: d.scroller.clientHeight,
+      viewHeight: d.wrapper.clientHeight,
+      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
+      viewWidth: d.wrapper.clientWidth,
+      barLeft: cm.options.fixedGutter ? gutterW : 0,
+      docHeight: docH,
+      scrollHeight: docH + scrollGap(cm) + d.barHeight,
+      nativeBarWidth: d.nativeBarWidth,
+      gutterWidth: gutterW
+    }
+  }
+
+  var NativeScrollbars = function(place, scroll, cm) {
+    this.cm = cm;
+    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
+    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
+    vert.tabIndex = horiz.tabIndex = -1;
+    place(vert); place(horiz);
+
+    on(vert, "scroll", function () {
+      if (vert.clientHeight) { scroll(vert.scrollTop, "vertical"); }
+    });
+    on(horiz, "scroll", function () {
+      if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal"); }
+    });
+
+    this.checkedZeroWidth = false;
+    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
+    if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; }
+  };
+
+  NativeScrollbars.prototype.update = function (measure) {
+    var needsH = measure.scrollWidth > measure.clientWidth + 1;
+    var needsV = measure.scrollHeight > measure.clientHeight + 1;
+    var sWidth = measure.nativeBarWidth;
+
+    if (needsV) {
+      this.vert.style.display = "block";
+      this.vert.style.bottom = needsH ? sWidth + "px" : "0";
+      var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
+      // A bug in IE8 can cause this value to be negative, so guard it.
+      this.vert.firstChild.style.height =
+        Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
+    } else {
+      this.vert.style.display = "";
+      this.vert.firstChild.style.height = "0";
+    }
+
+    if (needsH) {
+      this.horiz.style.display = "block";
+      this.horiz.style.right = needsV ? sWidth + "px" : "0";
+      this.horiz.style.left = measure.barLeft + "px";
+      var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
+      this.horiz.firstChild.style.width =
+        Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
+    } else {
+      this.horiz.style.display = "";
+      this.horiz.firstChild.style.width = "0";
+    }
+
+    if (!this.checkedZeroWidth && measure.clientHeight > 0) {
+      if (sWidth == 0) { this.zeroWidthHack(); }
+      this.checkedZeroWidth = true;
+    }
+
+    return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}
+  };
+
+  NativeScrollbars.prototype.setScrollLeft = function (pos) {
+    if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; }
+    if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz"); }
+  };
+
+  NativeScrollbars.prototype.setScrollTop = function (pos) {
+    if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; }
+    if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert"); }
+  };
+
+  NativeScrollbars.prototype.zeroWidthHack = function () {
+    var w = mac && !mac_geMountainLion ? "12px" : "18px";
+    this.horiz.style.height = this.vert.style.width = w;
+    this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none";
+    this.disableHoriz = new Delayed;
+    this.disableVert = new Delayed;
+  };
+
+  NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {
+    bar.style.pointerEvents = "auto";
+    function maybeDisable() {
+      // To find out whether the scrollbar is still visible, we
+      // check whether the element under the pixel in the bottom
+      // right corner of the scrollbar box is the scrollbar box
+      // itself (when the bar is still visible) or its filler child
+      // (when the bar is hidden). If it is still visible, we keep
+      // it enabled, if it's hidden, we disable pointer events.
+      var box = bar.getBoundingClientRect();
+      var elt$$1 = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
+          : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);
+      if (elt$$1 != bar) { bar.style.pointerEvents = "none"; }
+      else { delay.set(1000, maybeDisable); }
+    }
+    delay.set(1000, maybeDisable);
+  };
+
+  NativeScrollbars.prototype.clear = function () {
+    var parent = this.horiz.parentNode;
+    parent.removeChild(this.horiz);
+    parent.removeChild(this.vert);
+  };
+
+  var NullScrollbars = function () {};
+
+  NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };
+  NullScrollbars.prototype.setScrollLeft = function () {};
+  NullScrollbars.prototype.setScrollTop = function () {};
+  NullScrollbars.prototype.clear = function () {};
+
+  function updateScrollbars(cm, measure) {
+    if (!measure) { measure = measureForScrollbars(cm); }
+    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
+    updateScrollbarsInner(cm, measure);
+    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
+      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
+        { updateHeightsInViewport(cm); }
+      updateScrollbarsInner(cm, measureForScrollbars(cm));
+      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
+    }
+  }
+
+  // Re-synchronize the fake scrollbars with the actual size of the
+  // content.
+  function updateScrollbarsInner(cm, measure) {
+    var d = cm.display;
+    var sizes = d.scrollbars.update(measure);
+
+    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
+    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
+    d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent";
+
+    if (sizes.right && sizes.bottom) {
+      d.scrollbarFiller.style.display = "block";
+      d.scrollbarFiller.style.height = sizes.bottom + "px";
+      d.scrollbarFiller.style.width = sizes.right + "px";
+    } else { d.scrollbarFiller.style.display = ""; }
+    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
+      d.gutterFiller.style.display = "block";
+      d.gutterFiller.style.height = sizes.bottom + "px";
+      d.gutterFiller.style.width = measure.gutterWidth + "px";
+    } else { d.gutterFiller.style.display = ""; }
+  }
+
+  var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};
+
+  function initScrollbars(cm) {
+    if (cm.display.scrollbars) {
+      cm.display.scrollbars.clear();
+      if (cm.display.scrollbars.addClass)
+        { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
+    }
+
+    cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
+      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
+      // Prevent clicks in the scrollbars from killing focus
+      on(node, "mousedown", function () {
+        if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); }
+      });
+      node.setAttribute("cm-not-content", "true");
+    }, function (pos, axis) {
+      if (axis == "horizontal") { setScrollLeft(cm, pos); }
+      else { updateScrollTop(cm, pos); }
+    }, cm);
+    if (cm.display.scrollbars.addClass)
+      { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
+  }
+
+  // Operations are used to wrap a series of changes to the editor
+  // state in such a way that each change won't have to update the
+  // cursor and display (which would be awkward, slow, and
+  // error-prone). Instead, display updates are batched and then all
+  // combined and executed at once.
+
+  var nextOpId = 0;
+  // Start a new operation.
+  function startOperation(cm) {
+    cm.curOp = {
+      cm: cm,
+      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
+      startHeight: cm.doc.height, // Used to detect need to update scrollbar
+      forceUpdate: false,      // Used to force a redraw
+      updateInput: 0,       // Whether to reset the input textarea
+      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
+      changeObjs: null,        // Accumulated changes, for firing change events
+      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
+      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
+      selectionChanged: false, // Whether the selection needs to be redrawn
+      updateMaxLine: false,    // Set when the widest line needs to be determined anew
+      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
+      scrollToPos: null,       // Used to scroll to a specific position
+      focus: false,
+      id: ++nextOpId           // Unique ID
+    };
+    pushOperation(cm.curOp);
+  }
+
+  // Finish an operation, updating the display and signalling delayed events
+  function endOperation(cm) {
+    var op = cm.curOp;
+    if (op) { finishOperation(op, function (group) {
+      for (var i = 0; i < group.ops.length; i++)
+        { group.ops[i].cm.curOp = null; }
+      endOperations(group);
+    }); }
+  }
+
+  // The DOM updates done when an operation finishes are batched so
+  // that the minimum number of relayouts are required.
+  function endOperations(group) {
+    var ops = group.ops;
+    for (var i = 0; i < ops.length; i++) // Read DOM
+      { endOperation_R1(ops[i]); }
+    for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
+      { endOperation_W1(ops[i$1]); }
+    for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
+      { endOperation_R2(ops[i$2]); }
+    for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
+      { endOperation_W2(ops[i$3]); }
+    for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
+      { endOperation_finish(ops[i$4]); }
+  }
+
+  function endOperation_R1(op) {
+    var cm = op.cm, display = cm.display;
+    maybeClipScrollbars(cm);
+    if (op.updateMaxLine) { findMaxLine(cm); }
+
+    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
+      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
+                         op.scrollToPos.to.line >= display.viewTo) ||
+      display.maxLineChanged && cm.options.lineWrapping;
+    op.update = op.mustUpdate &&
+      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
+  }
+
+  function endOperation_W1(op) {
+    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
+  }
+
+  function endOperation_R2(op) {
+    var cm = op.cm, display = cm.display;
+    if (op.updatedDisplay) { updateHeightsInViewport(cm); }
+
+    op.barMeasure = measureForScrollbars(cm);
+
+    // If the max line changed since it was last measured, measure it,
+    // and ensure the document's width matches it.
+    // updateDisplay_W2 will use these properties to do the actual resizing
+    if (display.maxLineChanged && !cm.options.lineWrapping) {
+      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
+      cm.display.sizerWidth = op.adjustWidthTo;
+      op.barMeasure.scrollWidth =
+        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
+      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
+    }
+
+    if (op.updatedDisplay || op.selectionChanged)
+      { op.preparedSelection = display.input.prepareSelection(); }
+  }
+
+  function endOperation_W2(op) {
+    var cm = op.cm;
+
+    if (op.adjustWidthTo != null) {
+      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
+      if (op.maxScrollLeft < cm.doc.scrollLeft)
+        { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); }
+      cm.display.maxLineChanged = false;
+    }
+
+    var takeFocus = op.focus && op.focus == activeElt();
+    if (op.preparedSelection)
+      { cm.display.input.showSelection(op.preparedSelection, takeFocus); }
+    if (op.updatedDisplay || op.startHeight != cm.doc.height)
+      { updateScrollbars(cm, op.barMeasure); }
+    if (op.updatedDisplay)
+      { setDocumentHeight(cm, op.barMeasure); }
+
+    if (op.selectionChanged) { restartBlink(cm); }
+
+    if (cm.state.focused && op.updateInput)
+      { cm.display.input.reset(op.typing); }
+    if (takeFocus) { ensureFocus(op.cm); }
+  }
+
+  function endOperation_finish(op) {
+    var cm = op.cm, display = cm.display, doc = cm.doc;
+
+    if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); }
+
+    // Abort mouse wheel delta measurement, when scrolling explicitly
+    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
+      { display.wheelStartX = display.wheelStartY = null; }
+
+    // Propagate the scroll position to the actual DOM scroller
+    if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); }
+
+    if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); }
+    // If we need to scroll a specific position into view, do so.
+    if (op.scrollToPos) {
+      var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
+                                   clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
+      maybeScrollWindow(cm, rect);
+    }
+
+    // Fire events for markers that are hidden/unidden by editing or
+    // undoing
+    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
+    if (hidden) { for (var i = 0; i < hidden.length; ++i)
+      { if (!hidden[i].lines.length) { signal(hidden[i], "hide"); } } }
+    if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)
+      { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide"); } } }
+
+    if (display.wrapper.offsetHeight)
+      { doc.scrollTop = cm.display.scroller.scrollTop; }
+
+    // Fire change events, and delayed event handlers
+    if (op.changeObjs)
+      { signal(cm, "changes", cm, op.changeObjs); }
+    if (op.update)
+      { op.update.finish(); }
+  }
+
+  // Run the given function in an operation
+  function runInOp(cm, f) {
+    if (cm.curOp) { return f() }
+    startOperation(cm);
+    try { return f() }
+    finally { endOperation(cm); }
+  }
+  // Wraps a function in an operation. Returns the wrapped function.
+  function operation(cm, f) {
+    return function() {
+      if (cm.curOp) { return f.apply(cm, arguments) }
+      startOperation(cm);
+      try { return f.apply(cm, arguments) }
+      finally { endOperation(cm); }
+    }
+  }
+  // Used to add methods to editor and doc instances, wrapping them in
+  // operations.
+  function methodOp(f) {
+    return function() {
+      if (this.curOp) { return f.apply(this, arguments) }
+      startOperation(this);
+      try { return f.apply(this, arguments) }
+      finally { endOperation(this); }
+    }
+  }
+  function docMethodOp(f) {
+    return function() {
+      var cm = this.cm;
+      if (!cm || cm.curOp) { return f.apply(this, arguments) }
+      startOperation(cm);
+      try { return f.apply(this, arguments) }
+      finally { endOperation(cm); }
+    }
+  }
+
+  // HIGHLIGHT WORKER
+
+  function startWorker(cm, time) {
+    if (cm.doc.highlightFrontier < cm.display.viewTo)
+      { cm.state.highlight.set(time, bind(highlightWorker, cm)); }
+  }
+
+  function highlightWorker(cm) {
+    var doc = cm.doc;
+    if (doc.highlightFrontier >= cm.display.viewTo) { return }
+    var end = +new Date + cm.options.workTime;
+    var context = getContextBefore(cm, doc.highlightFrontier);
+    var changedLines = [];
+
+    doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
+      if (context.line >= cm.display.viewFrom) { // Visible
+        var oldStyles = line.styles;
+        var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;
+        var highlighted = highlightLine(cm, line, context, true);
+        if (resetState) { context.state = resetState; }
+        line.styles = highlighted.styles;
+        var oldCls = line.styleClasses, newCls = highlighted.classes;
+        if (newCls) { line.styleClasses = newCls; }
+        else if (oldCls) { line.styleClasses = null; }
+        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
+          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
+        for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; }
+        if (ischange) { changedLines.push(context.line); }
+        line.stateAfter = context.save();
+        context.nextLine();
+      } else {
+        if (line.text.length <= cm.options.maxHighlightLength)
+          { processLine(cm, line.text, context); }
+        line.stateAfter = context.line % 5 == 0 ? context.save() : null;
+        context.nextLine();
+      }
+      if (+new Date > end) {
+        startWorker(cm, cm.options.workDelay);
+        return true
+      }
+    });
+    doc.highlightFrontier = context.line;
+    doc.modeFrontier = Math.max(doc.modeFrontier, context.line);
+    if (changedLines.length) { runInOp(cm, function () {
+      for (var i = 0; i < changedLines.length; i++)
+        { regLineChange(cm, changedLines[i], "text"); }
+    }); }
+  }
+
+  // DISPLAY DRAWING
+
+  var DisplayUpdate = function(cm, viewport, force) {
+    var display = cm.display;
+
+    this.viewport = viewport;
+    // Store some values that we'll need later (but don't want to force a relayout for)
+    this.visible = visibleLines(display, cm.doc, viewport);
+    this.editorIsHidden = !display.wrapper.offsetWidth;
+    this.wrapperHeight = display.wrapper.clientHeight;
+    this.wrapperWidth = display.wrapper.clientWidth;
+    this.oldDisplayWidth = displayWidth(cm);
+    this.force = force;
+    this.dims = getDimensions(cm);
+    this.events = [];
+  };
+
+  DisplayUpdate.prototype.signal = function (emitter, type) {
+    if (hasHandler(emitter, type))
+      { this.events.push(arguments); }
+  };
+  DisplayUpdate.prototype.finish = function () {
+      var this$1 = this;
+
+    for (var i = 0; i < this.events.length; i++)
+      { signal.apply(null, this$1.events[i]); }
+  };
+
+  function maybeClipScrollbars(cm) {
+    var display = cm.display;
+    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
+      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
+      display.heightForcer.style.height = scrollGap(cm) + "px";
+      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
+      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
+      display.scrollbarsClipped = true;
+    }
+  }
+
+  function selectionSnapshot(cm) {
+    if (cm.hasFocus()) { return null }
+    var active = activeElt();
+    if (!active || !contains(cm.display.lineDiv, active)) { return null }
+    var result = {activeElt: active};
+    if (window.getSelection) {
+      var sel = window.getSelection();
+      if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {
+        result.anchorNode = sel.anchorNode;
+        result.anchorOffset = sel.anchorOffset;
+        result.focusNode = sel.focusNode;
+        result.focusOffset = sel.focusOffset;
+      }
+    }
+    return result
+  }
+
+  function restoreSelection(snapshot) {
+    if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }
+    snapshot.activeElt.focus();
+    if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
+      var sel = window.getSelection(), range$$1 = document.createRange();
+      range$$1.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
+      range$$1.collapse(false);
+      sel.removeAllRanges();
+      sel.addRange(range$$1);
+      sel.extend(snapshot.focusNode, snapshot.focusOffset);
+    }
+  }
+
+  // Does the actual updating of the line display. Bails out
+  // (returning false) when there is nothing to be done and forced is
+  // false.
+  function updateDisplayIfNeeded(cm, update) {
+    var display = cm.display, doc = cm.doc;
+
+    if (update.editorIsHidden) {
+      resetView(cm);
+      return false
+    }
+
+    // Bail out if the visible area is already rendered and nothing changed.
+    if (!update.force &&
+        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
+        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
+        display.renderedView == display.view && countDirtyView(cm) == 0)
+      { return false }
+
+    if (maybeUpdateLineNumberWidth(cm)) {
+      resetView(cm);
+      update.dims = getDimensions(cm);
+    }
+
+    // Compute a suitable new viewport (from & to)
+    var end = doc.first + doc.size;
+    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
+    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
+    if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); }
+    if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); }
+    if (sawCollapsedSpans) {
+      from = visualLineNo(cm.doc, from);
+      to = visualLineEndNo(cm.doc, to);
+    }
+
+    var different = from != display.viewFrom || to != display.viewTo ||
+      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
+    adjustView(cm, from, to);
+
+    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
+    // Position the mover div to align with the current scroll position
+    cm.display.mover.style.top = display.viewOffset + "px";
+
+    var toUpdate = countDirtyView(cm);
+    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
+        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
+      { return false }
+
+    // For big changes, we hide the enclosing element during the
+    // update, since that speeds up the operations on most browsers.
+    var selSnapshot = selectionSnapshot(cm);
+    if (toUpdate > 4) { display.lineDiv.style.display = "none"; }
+    patchDisplay(cm, display.updateLineNumbers, update.dims);
+    if (toUpdate > 4) { display.lineDiv.style.display = ""; }
+    display.renderedView = display.view;
+    // There might have been a widget with a focused element that got
+    // hidden or updated, if so re-focus it.
+    restoreSelection(selSnapshot);
+
+    // Prevent selection and cursors from interfering with the scroll
+    // width and height.
+    removeChildren(display.cursorDiv);
+    removeChildren(display.selectionDiv);
+    display.gutters.style.height = display.sizer.style.minHeight = 0;
+
+    if (different) {
+      display.lastWrapHeight = update.wrapperHeight;
+      display.lastWrapWidth = update.wrapperWidth;
+      startWorker(cm, 400);
+    }
+
+    display.updateLineNumbers = null;
+
+    return true
+  }
+
+  function postUpdateDisplay(cm, update) {
+    var viewport = update.viewport;
+
+    for (var first = true;; first = false) {
+      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
+        // Clip forced viewport to actual scrollable area.
+        if (viewport && viewport.top != null)
+          { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; }
+        // Updated line heights might result in the drawn area not
+        // actually covering the viewport. Keep looping until it does.
+        update.visible = visibleLines(cm.display, cm.doc, viewport);
+        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
+          { break }
+      } else if (first) {
+        update.visible = visibleLines(cm.display, cm.doc, viewport);
+      }
+      if (!updateDisplayIfNeeded(cm, update)) { break }
+      updateHeightsInViewport(cm);
+      var barMeasure = measureForScrollbars(cm);
+      updateSelection(cm);
+      updateScrollbars(cm, barMeasure);
+      setDocumentHeight(cm, barMeasure);
+      update.force = false;
+    }
+
+    update.signal(cm, "update", cm);
+    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
+      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
+      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
+    }
+  }
+
+  function updateDisplaySimple(cm, viewport) {
+    var update = new DisplayUpdate(cm, viewport);
+    if (updateDisplayIfNeeded(cm, update)) {
+      updateHeightsInViewport(cm);
+      postUpdateDisplay(cm, update);
+      var barMeasure = measureForScrollbars(cm);
+      updateSelection(cm);
+      updateScrollbars(cm, barMeasure);
+      setDocumentHeight(cm, barMeasure);
+      update.finish();
+    }
+  }
+
+  // Sync the actual display DOM structure with display.view, removing
+  // nodes for lines that are no longer in view, and creating the ones
+  // that are not there yet, and updating the ones that are out of
+  // date.
+  function patchDisplay(cm, updateNumbersFrom, dims) {
+    var display = cm.display, lineNumbers = cm.options.lineNumbers;
+    var container = display.lineDiv, cur = container.firstChild;
+
+    function rm(node) {
+      var next = node.nextSibling;
+      // Works around a throw-scroll bug in OS X Webkit
+      if (webkit && mac && cm.display.currentWheelTarget == node)
+        { node.style.display = "none"; }
+      else
+        { node.parentNode.removeChild(node); }
+      return next
+    }
+
+    var view = display.view, lineN = display.viewFrom;
+    // Loop over the elements in the view, syncing cur (the DOM nodes
+    // in display.lineDiv) with the view as we go.
+    for (var i = 0; i < view.length; i++) {
+      var lineView = view[i];
+      if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
+        var node = buildLineElement(cm, lineView, lineN, dims);
+        container.insertBefore(node, cur);
+      } else { // Already drawn
+        while (cur != lineView.node) { cur = rm(cur); }
+        var updateNumber = lineNumbers && updateNumbersFrom != null &&
+          updateNumbersFrom <= lineN && lineView.lineNumber;
+        if (lineView.changes) {
+          if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false; }
+          updateLineForChanges(cm, lineView, lineN, dims);
+        }
+        if (updateNumber) {
+          removeChildren(lineView.lineNumber);
+          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
+        }
+        cur = lineView.node.nextSibling;
+      }
+      lineN += lineView.size;
+    }
+    while (cur) { cur = rm(cur); }
+  }
+
+  function updateGutterSpace(display) {
+    var width = display.gutters.offsetWidth;
+    display.sizer.style.marginLeft = width + "px";
+  }
+
+  function setDocumentHeight(cm, measure) {
+    cm.display.sizer.style.minHeight = measure.docHeight + "px";
+    cm.display.heightForcer.style.top = measure.docHeight + "px";
+    cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px";
+  }
+
+  // Re-align line numbers and gutter marks to compensate for
+  // horizontal scrolling.
+  function alignHorizontally(cm) {
+    var display = cm.display, view = display.view;
+    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }
+    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
+    var gutterW = display.gutters.offsetWidth, left = comp + "px";
+    for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {
+      if (cm.options.fixedGutter) {
+        if (view[i].gutter)
+          { view[i].gutter.style.left = left; }
+        if (view[i].gutterBackground)
+          { view[i].gutterBackground.style.left = left; }
+      }
+      var align = view[i].alignable;
+      if (align) { for (var j = 0; j < align.length; j++)
+        { align[j].style.left = left; } }
+    } }
+    if (cm.options.fixedGutter)
+      { display.gutters.style.left = (comp + gutterW) + "px"; }
+  }
+
+  // Used to ensure that the line number gutter is still the right
+  // size for the current document size. Returns true when an update
+  // is needed.
+  function maybeUpdateLineNumberWidth(cm) {
+    if (!cm.options.lineNumbers) { return false }
+    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
+    if (last.length != display.lineNumChars) {
+      var test = display.measure.appendChild(elt("div", [elt("div", last)],
+                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
+      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
+      display.lineGutter.style.width = "";
+      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
+      display.lineNumWidth = display.lineNumInnerWidth + padding;
+      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
+      display.lineGutter.style.width = display.lineNumWidth + "px";
+      updateGutterSpace(cm.display);
+      return true
+    }
+    return false
+  }
+
+  function getGutters(gutters, lineNumbers) {
+    var result = [], sawLineNumbers = false;
+    for (var i = 0; i < gutters.length; i++) {
+      var name = gutters[i], style = null;
+      if (typeof name != "string") { style = name.style; name = name.className; }
+      if (name == "CodeMirror-linenumbers") {
+        if (!lineNumbers) { continue }
+        else { sawLineNumbers = true; }
+      }
+      result.push({className: name, style: style});
+    }
+    if (lineNumbers && !sawLineNumbers) { result.push({className: "CodeMirror-linenumbers", style: null}); }
+    return result
+  }
+
+  // Rebuild the gutter elements, ensure the margin to the left of the
+  // code matches their width.
+  function renderGutters(display) {
+    var gutters = display.gutters, specs = display.gutterSpecs;
+    removeChildren(gutters);
+    display.lineGutter = null;
+    for (var i = 0; i < specs.length; ++i) {
+      var ref = specs[i];
+      var className = ref.className;
+      var style = ref.style;
+      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + className));
+      if (style) { gElt.style.cssText = style; }
+      if (className == "CodeMirror-linenumbers") {
+        display.lineGutter = gElt;
+        gElt.style.width = (display.lineNumWidth || 1) + "px";
+      }
+    }
+    gutters.style.display = specs.length ? "" : "none";
+    updateGutterSpace(display);
+  }
+
+  function updateGutters(cm) {
+    renderGutters(cm.display);
+    regChange(cm);
+    alignHorizontally(cm);
+  }
+
+  // The display handles the DOM integration, both for input reading
+  // and content drawing. It holds references to DOM nodes and
+  // display-related state.
+
+  function Display(place, doc, input, options) {
+    var d = this;
+    this.input = input;
+
+    // Covers bottom-right square when both scrollbars are present.
+    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
+    d.scrollbarFiller.setAttribute("cm-not-content", "true");
+    // Covers bottom of gutter when coverGutterNextToScrollbar is on
+    // and h scrollbar is present.
+    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
+    d.gutterFiller.setAttribute("cm-not-content", "true");
+    // Will contain the actual code, positioned to cover the viewport.
+    d.lineDiv = eltP("div", null, "CodeMirror-code");
+    // Elements are added to these to represent selection and cursors.
+    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
+    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
+    // A visibility: hidden element used to find the size of things.
+    d.measure = elt("div", null, "CodeMirror-measure");
+    // When lines outside of the viewport are measured, they are drawn in this.
+    d.lineMeasure = elt("div", null, "CodeMirror-measure");
+    // Wraps everything that needs to exist inside the vertically-padded coordinate system
+    d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
+                      null, "position: relative; outline: none");
+    var lines = eltP("div", [d.lineSpace], "CodeMirror-lines");
+    // Moved around its parent to cover visible view.
+    d.mover = elt("div", [lines], null, "position: relative");
+    // Set to the height of the document, allowing scrolling.
+    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
+    d.sizerWidth = null;
+    // Behavior of elts with overflow: auto and padding is
+    // inconsistent across browsers. This is used to ensure the
+    // scrollable area is big enough.
+    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
+    // Will contain the gutters, if any.
+    d.gutters = elt("div", null, "CodeMirror-gutters");
+    d.lineGutter = null;
+    // Actual scrollable element.
+    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
+    d.scroller.setAttribute("tabIndex", "-1");
+    // The element in which the editor lives.
+    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
+
+    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
+    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
+    if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; }
+
+    if (place) {
+      if (place.appendChild) { place.appendChild(d.wrapper); }
+      else { place(d.wrapper); }
+    }
+
+    // Current rendered range (may be bigger than the view window).
+    d.viewFrom = d.viewTo = doc.first;
+    d.reportedViewFrom = d.reportedViewTo = doc.first;
+    // Information about the rendered lines.
+    d.view = [];
+    d.renderedView = null;
+    // Holds info about a single rendered line when it was rendered
+    // for measurement, while not in view.
+    d.externalMeasured = null;
+    // Empty space (in pixels) above the view
+    d.viewOffset = 0;
+    d.lastWrapHeight = d.lastWrapWidth = 0;
+    d.updateLineNumbers = null;
+
+    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
+    d.scrollbarsClipped = false;
+
+    // Used to only resize the line number gutter when necessary (when
+    // the amount of lines crosses a boundary that makes its width change)
+    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
+    // Set to true when a non-horizontal-scrolling line widget is
+    // added. As an optimization, line widget aligning is skipped when
+    // this is false.
+    d.alignWidgets = false;
+
+    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
+
+    // Tracks the maximum line length so that the horizontal scrollbar
+    // can be kept static when scrolling.
+    d.maxLine = null;
+    d.maxLineLength = 0;
+    d.maxLineChanged = false;
+
+    // Used for measuring wheel scrolling granularity
+    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
+
+    // True when shift is held down.
+    d.shift = false;
+
+    // Used to track whether anything happened since the context menu
+    // was opened.
+    d.selForContextMenu = null;
+
+    d.activeTouch = null;
+
+    d.gutterSpecs = getGutters(options.gutters, options.lineNumbers);
+    renderGutters(d);
+
+    input.init(d);
+  }
+
+  // Since the delta values reported on mouse wheel events are
+  // unstandardized between browsers and even browser versions, and
+  // generally horribly unpredictable, this code starts by measuring
+  // the scroll effect that the first few mouse wheel events have,
+  // and, from that, detects the way it can convert deltas to pixel
+  // offsets afterwards.
+  //
+  // The reason we want to know the amount a wheel event will scroll
+  // is that it gives us a chance to update the display before the
+  // actual scrolling happens, reducing flickering.
+
+  var wheelSamples = 0, wheelPixelsPerUnit = null;
+  // Fill in a browser-detected starting value on browsers where we
+  // know one. These don't have to be accurate -- the result of them
+  // being wrong would just be a slight flicker on the first wheel
+  // scroll (if it is large enough).
+  if (ie) { wheelPixelsPerUnit = -.53; }
+  else if (gecko) { wheelPixelsPerUnit = 15; }
+  else if (chrome) { wheelPixelsPerUnit = -.7; }
+  else if (safari) { wheelPixelsPerUnit = -1/3; }
+
+  function wheelEventDelta(e) {
+    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
+    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; }
+    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; }
+    else if (dy == null) { dy = e.wheelDelta; }
+    return {x: dx, y: dy}
+  }
+  function wheelEventPixels(e) {
+    var delta = wheelEventDelta(e);
+    delta.x *= wheelPixelsPerUnit;
+    delta.y *= wheelPixelsPerUnit;
+    return delta
+  }
+
+  function onScrollWheel(cm, e) {
+    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;
+
+    var display = cm.display, scroll = display.scroller;
+    // Quit if there's nothing to scroll here
+    var canScrollX = scroll.scrollWidth > scroll.clientWidth;
+    var canScrollY = scroll.scrollHeight > scroll.clientHeight;
+    if (!(dx && canScrollX || dy && canScrollY)) { return }
+
+    // Webkit browsers on OS X abort momentum scrolls when the target
+    // of the scroll event is removed from the scrollable element.
+    // This hack (see related code in patchDisplay) makes sure the
+    // element is kept around.
+    if (dy && mac && webkit) {
+      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
+        for (var i = 0; i < view.length; i++) {
+          if (view[i].node == cur) {
+            cm.display.currentWheelTarget = cur;
+            break outer
+          }
+        }
+      }
+    }
+
+    // On some browsers, horizontal scrolling will cause redraws to
+    // happen before the gutter has been realigned, causing it to
+    // wriggle around in a most unseemly way. When we have an
+    // estimated pixels/delta value, we just handle horizontal
+    // scrolling entirely here. It'll be slightly off from native, but
+    // better than glitching out.
+    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
+      if (dy && canScrollY)
+        { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)); }
+      setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit));
+      // Only prevent default scrolling if vertical scrolling is
+      // actually possible. Otherwise, it causes vertical scroll
+      // jitter on OSX trackpads when deltaX is small and deltaY
+      // is large (issue #3579)
+      if (!dy || (dy && canScrollY))
+        { e_preventDefault(e); }
+      display.wheelStartX = null; // Abort measurement, if in progress
+      return
+    }
+
+    // 'Project' the visible viewport to cover the area that is being
+    // scrolled into view (if we know enough to estimate it).
+    if (dy && wheelPixelsPerUnit != null) {
+      var pixels = dy * wheelPixelsPerUnit;
+      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
+      if (pixels < 0) { top = Math.max(0, top + pixels - 50); }
+      else { bot = Math.min(cm.doc.height, bot + pixels + 50); }
+      updateDisplaySimple(cm, {top: top, bottom: bot});
+    }
+
+    if (wheelSamples < 20) {
+      if (display.wheelStartX == null) {
+        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
+        display.wheelDX = dx; display.wheelDY = dy;
+        setTimeout(function () {
+          if (display.wheelStartX == null) { return }
+          var movedX = scroll.scrollLeft - display.wheelStartX;
+          var movedY = scroll.scrollTop - display.wheelStartY;
+          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
+            (movedX && display.wheelDX && movedX / display.wheelDX);
+          display.wheelStartX = display.wheelStartY = null;
+          if (!sample) { return }
+          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
+          ++wheelSamples;
+        }, 200);
+      } else {
+        display.wheelDX += dx; display.wheelDY += dy;
+      }
+    }
+  }
+
+  // Selection objects are immutable. A new one is created every time
+  // the selection changes. A selection is one or more non-overlapping
+  // (and non-touching) ranges, sorted, and an integer that indicates
+  // which one is the primary selection (the one that's scrolled into
+  // view, that getCursor returns, etc).
+  var Selection = function(ranges, primIndex) {
+    this.ranges = ranges;
+    this.primIndex = primIndex;
+  };
+
+  Selection.prototype.primary = function () { return this.ranges[this.primIndex] };
+
+  Selection.prototype.equals = function (other) {
+      var this$1 = this;
+
+    if (other == this) { return true }
+    if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
+    for (var i = 0; i < this.ranges.length; i++) {
+      var here = this$1.ranges[i], there = other.ranges[i];
+      if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }
+    }
+    return true
+  };
+
+  Selection.prototype.deepCopy = function () {
+      var this$1 = this;
+
+    var out = [];
+    for (var i = 0; i < this.ranges.length; i++)
+      { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)); }
+    return new Selection(out, this.primIndex)
+  };
+
+  Selection.prototype.somethingSelected = function () {
+      var this$1 = this;
+
+    for (var i = 0; i < this.ranges.length; i++)
+      { if (!this$1.ranges[i].empty()) { return true } }
+    return false
+  };
+
+  Selection.prototype.contains = function (pos, end) {
+      var this$1 = this;
+
+    if (!end) { end = pos; }
+    for (var i = 0; i < this.ranges.length; i++) {
+      var range = this$1.ranges[i];
+      if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
+        { return i }
+    }
+    return -1
+  };
+
+  var Range = function(anchor, head) {
+    this.anchor = anchor; this.head = head;
+  };
+
+  Range.prototype.from = function () { return minPos(this.anchor, this.head) };
+  Range.prototype.to = function () { return maxPos(this.anchor, this.head) };
+  Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };
+
+  // Take an unsorted, potentially overlapping set of ranges, and
+  // build a selection out of it. 'Consumes' ranges array (modifying
+  // it).
+  function normalizeSelection(cm, ranges, primIndex) {
+    var mayTouch = cm && cm.options.selectionsMayTouch;
+    var prim = ranges[primIndex];
+    ranges.sort(function (a, b) { return cmp(a.from(), b.from()); });
+    primIndex = indexOf(ranges, prim);
+    for (var i = 1; i < ranges.length; i++) {
+      var cur = ranges[i], prev = ranges[i - 1];
+      var diff = cmp(prev.to(), cur.from());
+      if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {
+        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
+        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
+        if (i <= primIndex) { --primIndex; }
+        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
+      }
+    }
+    return new Selection(ranges, primIndex)
+  }
+
+  function simpleSelection(anchor, head) {
+    return new Selection([new Range(anchor, head || anchor)], 0)
+  }
+
+  // Compute the position of the end of a change (its 'to' property
+  // refers to the pre-change end).
+  function changeEnd(change) {
+    if (!change.text) { return change.to }
+    return Pos(change.from.line + change.text.length - 1,
+               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
+  }
+
+  // Adjust a position to refer to the post-change position of the
+  // same text, or the end of the change if the change covers it.
+  function adjustForChange(pos, change) {
+    if (cmp(pos, change.from) < 0) { return pos }
+    if (cmp(pos, change.to) <= 0) { return changeEnd(change) }
+
+    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
+    if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; }
+    return Pos(line, ch)
+  }
+
+  function computeSelAfterChange(doc, change) {
+    var out = [];
+    for (var i = 0; i < doc.sel.ranges.length; i++) {
+      var range = doc.sel.ranges[i];
+      out.push(new Range(adjustForChange(range.anchor, change),
+                         adjustForChange(range.head, change)));
+    }
+    return normalizeSelection(doc.cm, out, doc.sel.primIndex)
+  }
+
+  function offsetPos(pos, old, nw) {
+    if (pos.line == old.line)
+      { return Pos(nw.line, pos.ch - old.ch + nw.ch) }
+    else
+      { return Pos(nw.line + (pos.line - old.line), pos.ch) }
+  }
+
+  // Used by replaceSelections to allow moving the selection to the
+  // start or around the replaced test. Hint may be "start" or "around".
+  function computeReplacedSel(doc, changes, hint) {
+    var out = [];
+    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
+    for (var i = 0; i < changes.length; i++) {
+      var change = changes[i];
+      var from = offsetPos(change.from, oldPrev, newPrev);
+      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
+      oldPrev = change.to;
+      newPrev = to;
+      if (hint == "around") {
+        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
+        out[i] = new Range(inv ? to : from, inv ? from : to);
+      } else {
+        out[i] = new Range(from, from);
+      }
+    }
+    return new Selection(out, doc.sel.primIndex)
+  }
+
+  // Used to get the editor into a consistent state again when options change.
+
+  function loadMode(cm) {
+    cm.doc.mode = getMode(cm.options, cm.doc.modeOption);
+    resetModeState(cm);
+  }
+
+  function resetModeState(cm) {
+    cm.doc.iter(function (line) {
+      if (line.stateAfter) { line.stateAfter = null; }
+      if (line.styles) { line.styles = null; }
+    });
+    cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;
+    startWorker(cm, 100);
+    cm.state.modeGen++;
+    if (cm.curOp) { regChange(cm); }
+  }
+
+  // DOCUMENT DATA STRUCTURE
+
+  // By default, updates that start and end at the beginning of a line
+  // are treated specially, in order to make the association of line
+  // widgets and marker elements with the text behave more intuitive.
+  function isWholeLineUpdate(doc, change) {
+    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
+      (!doc.cm || doc.cm.options.wholeLineUpdateBefore)
+  }
+
+  // Perform a change on the document data structure.
+  function updateDoc(doc, change, markedSpans, estimateHeight$$1) {
+    function spansFor(n) {return markedSpans ? markedSpans[n] : null}
+    function update(line, text, spans) {
+      updateLine(line, text, spans, estimateHeight$$1);
+      signalLater(line, "change", line, change);
+    }
+    function linesFor(start, end) {
+      var result = [];
+      for (var i = start; i < end; ++i)
+        { result.push(new Line(text[i], spansFor(i), estimateHeight$$1)); }
+      return result
+    }
+
+    var from = change.from, to = change.to, text = change.text;
+    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
+    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
+
+    // Adjust the line structure
+    if (change.full) {
+      doc.insert(0, linesFor(0, text.length));
+      doc.remove(text.length, doc.size - text.length);
+    } else if (isWholeLineUpdate(doc, change)) {
+      // This is a whole-line replace. Treated specially to make
+      // sure line objects move the way they are supposed to.
+      var added = linesFor(0, text.length - 1);
+      update(lastLine, lastLine.text, lastSpans);
+      if (nlines) { doc.remove(from.line, nlines); }
+      if (added.length) { doc.insert(from.line, added); }
+    } else if (firstLine == lastLine) {
+      if (text.length == 1) {
+        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
+      } else {
+        var added$1 = linesFor(1, text.length - 1);
+        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight$$1));
+        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+        doc.insert(from.line + 1, added$1);
+      }
+    } else if (text.length == 1) {
+      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
+      doc.remove(from.line + 1, nlines);
+    } else {
+      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
+      var added$2 = linesFor(1, text.length - 1);
+      if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); }
+      doc.insert(from.line + 1, added$2);
+    }
+
+    signalLater(doc, "change", doc, change);
+  }
+
+  // Call f for all linked documents.
+  function linkedDocs(doc, f, sharedHistOnly) {
+    function propagate(doc, skip, sharedHist) {
+      if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {
+        var rel = doc.linked[i];
+        if (rel.doc == skip) { continue }
+        var shared = sharedHist && rel.sharedHist;
+        if (sharedHistOnly && !shared) { continue }
+        f(rel.doc, shared);
+        propagate(rel.doc, doc, shared);
+      } }
+    }
+    propagate(doc, null, true);
+  }
+
+  // Attach a document to an editor.
+  function attachDoc(cm, doc) {
+    if (doc.cm) { throw new Error("This document is already in use.") }
+    cm.doc = doc;
+    doc.cm = cm;
+    estimateLineHeights(cm);
+    loadMode(cm);
+    setDirectionClass(cm);
+    if (!cm.options.lineWrapping) { findMaxLine(cm); }
+    cm.options.mode = doc.modeOption;
+    regChange(cm);
+  }
+
+  function setDirectionClass(cm) {
+  (cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl");
+  }
+
+  function directionChanged(cm) {
+    runInOp(cm, function () {
+      setDirectionClass(cm);
+      regChange(cm);
+    });
+  }
+
+  function History(startGen) {
+    // Arrays of change events and selections. Doing something adds an
+    // event to done and clears undo. Undoing moves events from done
+    // to undone, redoing moves them in the other direction.
+    this.done = []; this.undone = [];
+    this.undoDepth = Infinity;
+    // Used to track when changes can be merged into a single undo
+    // event
+    this.lastModTime = this.lastSelTime = 0;
+    this.lastOp = this.lastSelOp = null;
+    this.lastOrigin = this.lastSelOrigin = null;
+    // Used by the isClean() method
+    this.generation = this.maxGeneration = startGen || 1;
+  }
+
+  // Create a history change event from an updateDoc-style change
+  // object.
+  function historyChangeFromChange(doc, change) {
+    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
+    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
+    linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true);
+    return histChange
+  }
+
+  // Pop all selection events off the end of a history array. Stop at
+  // a change event.
+  function clearSelectionEvents(array) {
+    while (array.length) {
+      var last = lst(array);
+      if (last.ranges) { array.pop(); }
+      else { break }
+    }
+  }
+
+  // Find the top change event in the history. Pop off selection
+  // events that are in the way.
+  function lastChangeEvent(hist, force) {
+    if (force) {
+      clearSelectionEvents(hist.done);
+      return lst(hist.done)
+    } else if (hist.done.length && !lst(hist.done).ranges) {
+      return lst(hist.done)
+    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
+      hist.done.pop();
+      return lst(hist.done)
+    }
+  }
+
+  // Register a change in the history. Merges changes that are within
+  // a single operation, or are close together with an origin that
+  // allows merging (starting with "+") into a single event.
+  function addChangeToHistory(doc, change, selAfter, opId) {
+    var hist = doc.history;
+    hist.undone.length = 0;
+    var time = +new Date, cur;
+    var last;
+
+    if ((hist.lastOp == opId ||
+         hist.lastOrigin == change.origin && change.origin &&
+         ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||
+          change.origin.charAt(0) == "*")) &&
+        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
+      // Merge this change into the last event
+      last = lst(cur.changes);
+      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
+        // Optimized case for simple insertion -- don't want to add
+        // new changesets for every character typed
+        last.to = changeEnd(change);
+      } else {
+        // Add new sub-event
+        cur.changes.push(historyChangeFromChange(doc, change));
+      }
+    } else {
+      // Can not be merged, start a new event.
+      var before = lst(hist.done);
+      if (!before || !before.ranges)
+        { pushSelectionToHistory(doc.sel, hist.done); }
+      cur = {changes: [historyChangeFromChange(doc, change)],
+             generation: hist.generation};
+      hist.done.push(cur);
+      while (hist.done.length > hist.undoDepth) {
+        hist.done.shift();
+        if (!hist.done[0].ranges) { hist.done.shift(); }
+      }
+    }
+    hist.done.push(selAfter);
+    hist.generation = ++hist.maxGeneration;
+    hist.lastModTime = hist.lastSelTime = time;
+    hist.lastOp = hist.lastSelOp = opId;
+    hist.lastOrigin = hist.lastSelOrigin = change.origin;
+
+    if (!last) { signal(doc, "historyAdded"); }
+  }
+
+  function selectionEventCanBeMerged(doc, origin, prev, sel) {
+    var ch = origin.charAt(0);
+    return ch == "*" ||
+      ch == "+" &&
+      prev.ranges.length == sel.ranges.length &&
+      prev.somethingSelected() == sel.somethingSelected() &&
+      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
+  }
+
+  // Called whenever the selection changes, sets the new selection as
+  // the pending selection in the history, and pushes the old pending
+  // selection into the 'done' array when it was significantly
+  // different (in number of selected ranges, emptiness, or time).
+  function addSelectionToHistory(doc, sel, opId, options) {
+    var hist = doc.history, origin = options && options.origin;
+
+    // A new event is started when the previous origin does not match
+    // the current, or the origins don't allow matching. Origins
+    // starting with * are always merged, those starting with + are
+    // merged when similar and close together in time.
+    if (opId == hist.lastSelOp ||
+        (origin && hist.lastSelOrigin == origin &&
+         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
+          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
+      { hist.done[hist.done.length - 1] = sel; }
+    else
+      { pushSelectionToHistory(sel, hist.done); }
+
+    hist.lastSelTime = +new Date;
+    hist.lastSelOrigin = origin;
+    hist.lastSelOp = opId;
+    if (options && options.clearRedo !== false)
+      { clearSelectionEvents(hist.undone); }
+  }
+
+  function pushSelectionToHistory(sel, dest) {
+    var top = lst(dest);
+    if (!(top && top.ranges && top.equals(sel)))
+      { dest.push(sel); }
+  }
+
+  // Used to store marked span information in the history.
+  function attachLocalSpans(doc, change, from, to) {
+    var existing = change["spans_" + doc.id], n = 0;
+    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
+      if (line.markedSpans)
+        { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; }
+      ++n;
+    });
+  }
+
+  // When un/re-doing restores text containing marked spans, those
+  // that have been explicitly cleared should not be restored.
+  function removeClearedSpans(spans) {
+    if (!spans) { return null }
+    var out;
+    for (var i = 0; i < spans.length; ++i) {
+      if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } }
+      else if (out) { out.push(spans[i]); }
+    }
+    return !out ? spans : out.length ? out : null
+  }
+
+  // Retrieve and filter the old marked spans stored in a change event.
+  function getOldSpans(doc, change) {
+    var found = change["spans_" + doc.id];
+    if (!found) { return null }
+    var nw = [];
+    for (var i = 0; i < change.text.length; ++i)
+      { nw.push(removeClearedSpans(found[i])); }
+    return nw
+  }
+
+  // Used for un/re-doing changes from the history. Combines the
+  // result of computing the existing spans with the set of spans that
+  // existed in the history (so that deleting around a span and then
+  // undoing brings back the span).
+  function mergeOldSpans(doc, change) {
+    var old = getOldSpans(doc, change);
+    var stretched = stretchSpansOverChange(doc, change);
+    if (!old) { return stretched }
+    if (!stretched) { return old }
+
+    for (var i = 0; i < old.length; ++i) {
+      var oldCur = old[i], stretchCur = stretched[i];
+      if (oldCur && stretchCur) {
+        spans: for (var j = 0; j < stretchCur.length; ++j) {
+          var span = stretchCur[j];
+          for (var k = 0; k < oldCur.length; ++k)
+            { if (oldCur[k].marker == span.marker) { continue spans } }
+          oldCur.push(span);
+        }
+      } else if (stretchCur) {
+        old[i] = stretchCur;
+      }
+    }
+    return old
+  }
+
+  // Used both to provide a JSON-safe object in .getHistory, and, when
+  // detaching a document, to split the history in two
+  function copyHistoryArray(events, newGroup, instantiateSel) {
+    var copy = [];
+    for (var i = 0; i < events.length; ++i) {
+      var event = events[i];
+      if (event.ranges) {
+        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
+        continue
+      }
+      var changes = event.changes, newChanges = [];
+      copy.push({changes: newChanges});
+      for (var j = 0; j < changes.length; ++j) {
+        var change = changes[j], m = (void 0);
+        newChanges.push({from: change.from, to: change.to, text: change.text});
+        if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) {
+          if (indexOf(newGroup, Number(m[1])) > -1) {
+            lst(newChanges)[prop] = change[prop];
+            delete change[prop];
+          }
+        } } }
+      }
+    }
+    return copy
+  }
+
+  // The 'scroll' parameter given to many of these indicated whether
+  // the new cursor position should be scrolled into view after
+  // modifying the selection.
+
+  // If shift is held or the extend flag is set, extends a range to
+  // include a given position (and optionally a second position).
+  // Otherwise, simply returns the range between the given positions.
+  // Used for cursor motion and such.
+  function extendRange(range, head, other, extend) {
+    if (extend) {
+      var anchor = range.anchor;
+      if (other) {
+        var posBefore = cmp(head, anchor) < 0;
+        if (posBefore != (cmp(other, anchor) < 0)) {
+          anchor = head;
+          head = other;
+        } else if (posBefore != (cmp(head, other) < 0)) {
+          head = other;
+        }
+      }
+      return new Range(anchor, head)
+    } else {
+      return new Range(other || head, head)
+    }
+  }
+
+  // Extend the primary selection range, discard the rest.
+  function extendSelection(doc, head, other, options, extend) {
+    if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); }
+    setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);
+  }
+
+  // Extend all selections (pos is an array of selections with length
+  // equal the number of selections)
+  function extendSelections(doc, heads, options) {
+    var out = [];
+    var extend = doc.cm && (doc.cm.display.shift || doc.extend);
+    for (var i = 0; i < doc.sel.ranges.length; i++)
+      { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); }
+    var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);
+    setSelection(doc, newSel, options);
+  }
+
+  // Updates a single range in the selection.
+  function replaceOneSelection(doc, i, range, options) {
+    var ranges = doc.sel.ranges.slice(0);
+    ranges[i] = range;
+    setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);
+  }
+
+  // Reset the selection to a single range.
+  function setSimpleSelection(doc, anchor, head, options) {
+    setSelection(doc, simpleSelection(anchor, head), options);
+  }
+
+  // Give beforeSelectionChange handlers a change to influence a
+  // selection update.
+  function filterSelectionChange(doc, sel, options) {
+    var obj = {
+      ranges: sel.ranges,
+      update: function(ranges) {
+        var this$1 = this;
+
+        this.ranges = [];
+        for (var i = 0; i < ranges.length; i++)
+          { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
+                                     clipPos(doc, ranges[i].head)); }
+      },
+      origin: options && options.origin
+    };
+    signal(doc, "beforeSelectionChange", doc, obj);
+    if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj); }
+    if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) }
+    else { return sel }
+  }
+
+  function setSelectionReplaceHistory(doc, sel, options) {
+    var done = doc.history.done, last = lst(done);
+    if (last && last.ranges) {
+      done[done.length - 1] = sel;
+      setSelectionNoUndo(doc, sel, options);
+    } else {
+      setSelection(doc, sel, options);
+    }
+  }
+
+  // Set a new selection.
+  function setSelection(doc, sel, options) {
+    setSelectionNoUndo(doc, sel, options);
+    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
+  }
+
+  function setSelectionNoUndo(doc, sel, options) {
+    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
+      { sel = filterSelectionChange(doc, sel, options); }
+
+    var bias = options && options.bias ||
+      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
+    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
+
+    if (!(options && options.scroll === false) && doc.cm)
+      { ensureCursorVisible(doc.cm); }
+  }
+
+  function setSelectionInner(doc, sel) {
+    if (sel.equals(doc.sel)) { return }
+
+    doc.sel = sel;
+
+    if (doc.cm) {
+      doc.cm.curOp.updateInput = 1;
+      doc.cm.curOp.selectionChanged = true;
+      signalCursorActivity(doc.cm);
+    }
+    signalLater(doc, "cursorActivity", doc);
+  }
+
+  // Verify that the selection does not partially select any atomic
+  // marked ranges.
+  function reCheckSelection(doc) {
+    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));
+  }
+
+  // Return a selection that does not partially select any atomic
+  // ranges.
+  function skipAtomicInSelection(doc, sel, bias, mayClear) {
+    var out;
+    for (var i = 0; i < sel.ranges.length; i++) {
+      var range = sel.ranges[i];
+      var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];
+      var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);
+      var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);
+      if (out || newAnchor != range.anchor || newHead != range.head) {
+        if (!out) { out = sel.ranges.slice(0, i); }
+        out[i] = new Range(newAnchor, newHead);
+      }
+    }
+    return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel
+  }
+
+  function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
+    var line = getLine(doc, pos.line);
+    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
+      var sp = line.markedSpans[i], m = sp.marker;
+
+      // Determine if we should prevent the cursor being placed to the left/right of an atomic marker
+      // Historically this was determined using the inclusiveLeft/Right option, but the new way to control it
+      // is with selectLeft/Right
+      var preventCursorLeft = ("selectLeft" in m) ? !m.selectLeft : m.inclusiveLeft;
+      var preventCursorRight = ("selectRight" in m) ? !m.selectRight : m.inclusiveRight;
+
+      if ((sp.from == null || (preventCursorLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
+          (sp.to == null || (preventCursorRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
+        if (mayClear) {
+          signal(m, "beforeCursorEnter");
+          if (m.explicitlyCleared) {
+            if (!line.markedSpans) { break }
+            else {--i; continue}
+          }
+        }
+        if (!m.atomic) { continue }
+
+        if (oldPos) {
+          var near = m.find(dir < 0 ? 1 : -1), diff = (void 0);
+          if (dir < 0 ? preventCursorRight : preventCursorLeft)
+            { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); }
+          if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
+            { return skipAtomicInner(doc, near, pos, dir, mayClear) }
+        }
+
+        var far = m.find(dir < 0 ? -1 : 1);
+        if (dir < 0 ? preventCursorLeft : preventCursorRight)
+          { far = movePos(doc, far, dir, far.line == pos.line ? line : null); }
+        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
+      }
+    } }
+    return pos
+  }
+
+  // Ensure a given position is not inside an atomic range.
+  function skipAtomic(doc, pos, oldPos, bias, mayClear) {
+    var dir = bias || 1;
+    var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
+        (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
+        skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
+        (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));
+    if (!found) {
+      doc.cantEdit = true;
+      return Pos(doc.first, 0)
+    }
+    return found
+  }
+
+  function movePos(doc, pos, dir, line) {
+    if (dir < 0 && pos.ch == 0) {
+      if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }
+      else { return null }
+    } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
+      if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }
+      else { return null }
+    } else {
+      return new Pos(pos.line, pos.ch + dir)
+    }
+  }
+
+  function selectAll(cm) {
+    cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);
+  }
+
+  // UPDATING
+
+  // Allow "beforeChange" event handlers to influence a change
+  function filterChange(doc, change, update) {
+    var obj = {
+      canceled: false,
+      from: change.from,
+      to: change.to,
+      text: change.text,
+      origin: change.origin,
+      cancel: function () { return obj.canceled = true; }
+    };
+    if (update) { obj.update = function (from, to, text, origin) {
+      if (from) { obj.from = clipPos(doc, from); }
+      if (to) { obj.to = clipPos(doc, to); }
+      if (text) { obj.text = text; }
+      if (origin !== undefined) { obj.origin = origin; }
+    }; }
+    signal(doc, "beforeChange", doc, obj);
+    if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj); }
+
+    if (obj.canceled) {
+      if (doc.cm) { doc.cm.curOp.updateInput = 2; }
+      return null
+    }
+    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}
+  }
+
+  // Apply a change to a document, and add it to the document's
+  // history, and propagating it to all linked documents.
+  function makeChange(doc, change, ignoreReadOnly) {
+    if (doc.cm) {
+      if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }
+      if (doc.cm.state.suppressEdits) { return }
+    }
+
+    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
+      change = filterChange(doc, change, true);
+      if (!change) { return }
+    }
+
+    // Possibly split or suppress the update based on the presence
+    // of read-only spans in its range.
+    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
+    if (split) {
+      for (var i = split.length - 1; i >= 0; --i)
+        { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}); }
+    } else {
+      makeChangeInner(doc, change);
+    }
+  }
+
+  function makeChangeInner(doc, change) {
+    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return }
+    var selAfter = computeSelAfterChange(doc, change);
+    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
+
+    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
+    var rebased = [];
+
+    linkedDocs(doc, function (doc, sharedHist) {
+      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+        rebaseHist(doc.history, change);
+        rebased.push(doc.history);
+      }
+      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
+    });
+  }
+
+  // Revert a change stored in a document's history.
+  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
+    var suppress = doc.cm && doc.cm.state.suppressEdits;
+    if (suppress && !allowSelectionOnly) { return }
+
+    var hist = doc.history, event, selAfter = doc.sel;
+    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
+
+    // Verify that there is a useable event (so that ctrl-z won't
+    // needlessly clear selection events)
+    var i = 0;
+    for (; i < source.length; i++) {
+      event = source[i];
+      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
+        { break }
+    }
+    if (i == source.length) { return }
+    hist.lastOrigin = hist.lastSelOrigin = null;
+
+    for (;;) {
+      event = source.pop();
+      if (event.ranges) {
+        pushSelectionToHistory(event, dest);
+        if (allowSelectionOnly && !event.equals(doc.sel)) {
+          setSelection(doc, event, {clearRedo: false});
+          return
+        }
+        selAfter = event;
+      } else if (suppress) {
+        source.push(event);
+        return
+      } else { break }
+    }
+
+    // Build up a reverse change object to add to the opposite history
+    // stack (redo when undoing, and vice versa).
+    var antiChanges = [];
+    pushSelectionToHistory(selAfter, dest);
+    dest.push({changes: antiChanges, generation: hist.generation});
+    hist.generation = event.generation || ++hist.maxGeneration;
+
+    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
+
+    var loop = function ( i ) {
+      var change = event.changes[i];
+      change.origin = type;
+      if (filter && !filterChange(doc, change, false)) {
+        source.length = 0;
+        return {}
+      }
+
+      antiChanges.push(historyChangeFromChange(doc, change));
+
+      var after = i ? computeSelAfterChange(doc, change) : lst(source);
+      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
+      if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); }
+      var rebased = [];
+
+      // Propagate to the linked documents
+      linkedDocs(doc, function (doc, sharedHist) {
+        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+          rebaseHist(doc.history, change);
+          rebased.push(doc.history);
+        }
+        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
+      });
+    };
+
+    for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
+      var returned = loop( i$1 );
+
+      if ( returned ) return returned.v;
+    }
+  }
+
+  // Sub-views need their line numbers shifted when text is added
+  // above or below them in the parent document.
+  function shiftDoc(doc, distance) {
+    if (distance == 0) { return }
+    doc.first += distance;
+    doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(
+      Pos(range.anchor.line + distance, range.anchor.ch),
+      Pos(range.head.line + distance, range.head.ch)
+    ); }), doc.sel.primIndex);
+    if (doc.cm) {
+      regChange(doc.cm, doc.first, doc.first - distance, distance);
+      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
+        { regLineChange(doc.cm, l, "gutter"); }
+    }
+  }
+
+  // More lower-level change function, handling only a single document
+  // (not linked ones).
+  function makeChangeSingleDoc(doc, change, selAfter, spans) {
+    if (doc.cm && !doc.cm.curOp)
+      { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }
+
+    if (change.to.line < doc.first) {
+      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
+      return
+    }
+    if (change.from.line > doc.lastLine()) { return }
+
+    // Clip the change to the size of this doc
+    if (change.from.line < doc.first) {
+      var shift = change.text.length - 1 - (doc.first - change.from.line);
+      shiftDoc(doc, shift);
+      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
+                text: [lst(change.text)], origin: change.origin};
+    }
+    var last = doc.lastLine();
+    if (change.to.line > last) {
+      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
+                text: [change.text[0]], origin: change.origin};
+    }
+
+    change.removed = getBetween(doc, change.from, change.to);
+
+    if (!selAfter) { selAfter = computeSelAfterChange(doc, change); }
+    if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); }
+    else { updateDoc(doc, change, spans); }
+    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
+
+    if (doc.cantEdit && skipAtomic(doc, Pos(doc.firstLine(), 0)))
+      { doc.cantEdit = false; }
+  }
+
+  // Handle the interaction of a change to a document with the editor
+  // that this document is part of.
+  function makeChangeSingleDocInEditor(cm, change, spans) {
+    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
+
+    var recomputeMaxLength = false, checkWidthStart = from.line;
+    if (!cm.options.lineWrapping) {
+      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
+      doc.iter(checkWidthStart, to.line + 1, function (line) {
+        if (line == display.maxLine) {
+          recomputeMaxLength = true;
+          return true
+        }
+      });
+    }
+
+    if (doc.sel.contains(change.from, change.to) > -1)
+      { signalCursorActivity(cm); }
+
+    updateDoc(doc, change, spans, estimateHeight(cm));
+
+    if (!cm.options.lineWrapping) {
+      doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
+        var len = lineLength(line);
+        if (len > display.maxLineLength) {
+          display.maxLine = line;
+          display.maxLineLength = len;
+          display.maxLineChanged = true;
+          recomputeMaxLength = false;
+        }
+      });
+      if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; }
+    }
+
+    retreatFrontier(doc, from.line);
+    startWorker(cm, 400);
+
+    var lendiff = change.text.length - (to.line - from.line) - 1;
+    // Remember that these lines changed, for updating the display
+    if (change.full)
+      { regChange(cm); }
+    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
+      { regLineChange(cm, from.line, "text"); }
+    else
+      { regChange(cm, from.line, to.line + 1, lendiff); }
+
+    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
+    if (changeHandler || changesHandler) {
+      var obj = {
+        from: from, to: to,
+        text: change.text,
+        removed: change.removed,
+        origin: change.origin
+      };
+      if (changeHandler) { signalLater(cm, "change", cm, obj); }
+      if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); }
+    }
+    cm.display.selForContextMenu = null;
+  }
+
+  function replaceRange(doc, code, from, to, origin) {
+    var assign;
+
+    if (!to) { to = from; }
+    if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); }
+    if (typeof code == "string") { code = doc.splitLines(code); }
+    makeChange(doc, {from: from, to: to, text: code, origin: origin});
+  }
+
+  // Rebasing/resetting history to deal with externally-sourced changes
+
+  function rebaseHistSelSingle(pos, from, to, diff) {
+    if (to < pos.line) {
+      pos.line += diff;
+    } else if (from < pos.line) {
+      pos.line = from;
+      pos.ch = 0;
+    }
+  }
+
+  // Tries to rebase an array of history events given a change in the
+  // document. If the change touches the same lines as the event, the
+  // event, and everything 'behind' it, is discarded. If the change is
+  // before the event, the event's positions are updated. Uses a
+  // copy-on-write scheme for the positions, to avoid having to
+  // reallocate them all on every rebase, but also avoid problems with
+  // shared position objects being unsafely updated.
+  function rebaseHistArray(array, from, to, diff) {
+    for (var i = 0; i < array.length; ++i) {
+      var sub = array[i], ok = true;
+      if (sub.ranges) {
+        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
+        for (var j = 0; j < sub.ranges.length; j++) {
+          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
+          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
+        }
+        continue
+      }
+      for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
+        var cur = sub.changes[j$1];
+        if (to < cur.from.line) {
+          cur.from = Pos(cur.from.line + diff, cur.from.ch);
+          cur.to = Pos(cur.to.line + diff, cur.to.ch);
+        } else if (from <= cur.to.line) {
+          ok = false;
+          break
+        }
+      }
+      if (!ok) {
+        array.splice(0, i + 1);
+        i = 0;
+      }
+    }
+  }
+
+  function rebaseHist(hist, change) {
+    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
+    rebaseHistArray(hist.done, from, to, diff);
+    rebaseHistArray(hist.undone, from, to, diff);
+  }
+
+  // Utility for applying a change to a line by handle or number,
+  // returning the number and optionally registering the line as
+  // changed.
+  function changeLine(doc, handle, changeType, op) {
+    var no = handle, line = handle;
+    if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)); }
+    else { no = lineNo(handle); }
+    if (no == null) { return null }
+    if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); }
+    return line
+  }
+
+  // The document is represented as a BTree consisting of leaves, with
+  // chunk of lines in them, and branches, with up to ten leaves or
+  // other branch nodes below them. The top node is always a branch
+  // node, and is the document object itself (meaning it has
+  // additional methods and properties).
+  //
+  // All nodes have parent links. The tree is used both to go from
+  // line numbers to line objects, and to go from objects to numbers.
+  // It also indexes by height, and is used to convert between height
+  // and line object, and to find the total height of the document.
+  //
+  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
+
+  function LeafChunk(lines) {
+    var this$1 = this;
+
+    this.lines = lines;
+    this.parent = null;
+    var height = 0;
+    for (var i = 0; i < lines.length; ++i) {
+      lines[i].parent = this$1;
+      height += lines[i].height;
+    }
+    this.height = height;
+  }
+
+  LeafChunk.prototype = {
+    chunkSize: function() { return this.lines.length },
+
+    // Remove the n lines at offset 'at'.
+    removeInner: function(at, n) {
+      var this$1 = this;
+
+      for (var i = at, e = at + n; i < e; ++i) {
+        var line = this$1.lines[i];
+        this$1.height -= line.height;
+        cleanUpLine(line);
+        signalLater(line, "delete");
+      }
+      this.lines.splice(at, n);
+    },
+
+    // Helper used to collapse a small branch into a single leaf.
+    collapse: function(lines) {
+      lines.push.apply(lines, this.lines);
+    },
+
+    // Insert the given array of lines at offset 'at', count them as
+    // having the given height.
+    insertInner: function(at, lines, height) {
+      var this$1 = this;
+
+      this.height += height;
+      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
+      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1; }
+    },
+
+    // Used to iterate over a part of the tree.
+    iterN: function(at, n, op) {
+      var this$1 = this;
+
+      for (var e = at + n; at < e; ++at)
+        { if (op(this$1.lines[at])) { return true } }
+    }
+  };
+
+  function BranchChunk(children) {
+    var this$1 = this;
+
+    this.children = children;
+    var size = 0, height = 0;
+    for (var i = 0; i < children.length; ++i) {
+      var ch = children[i];
+      size += ch.chunkSize(); height += ch.height;
+      ch.parent = this$1;
+    }
+    this.size = size;
+    this.height = height;
+    this.parent = null;
+  }
+
+  BranchChunk.prototype = {
+    chunkSize: function() { return this.size },
+
+    removeInner: function(at, n) {
+      var this$1 = this;
+
+      this.size -= n;
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this$1.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var rm = Math.min(n, sz - at), oldHeight = child.height;
+          child.removeInner(at, rm);
+          this$1.height -= oldHeight - child.height;
+          if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null; }
+          if ((n -= rm) == 0) { break }
+          at = 0;
+        } else { at -= sz; }
+      }
+      // If the result is smaller than 25 lines, ensure that it is a
+      // single leaf node.
+      if (this.size - n < 25 &&
+          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
+        var lines = [];
+        this.collapse(lines);
+        this.children = [new LeafChunk(lines)];
+        this.children[0].parent = this;
+      }
+    },
+
+    collapse: function(lines) {
+      var this$1 = this;
+
+      for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines); }
+    },
+
+    insertInner: function(at, lines, height) {
+      var this$1 = this;
+
+      this.size += lines.length;
+      this.height += height;
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this$1.children[i], sz = child.chunkSize();
+        if (at <= sz) {
+          child.insertInner(at, lines, height);
+          if (child.lines && child.lines.length > 50) {
+            // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
+            // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
+            var remaining = child.lines.length % 25 + 25;
+            for (var pos = remaining; pos < child.lines.length;) {
+              var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));
+              child.height -= leaf.height;
+              this$1.children.splice(++i, 0, leaf);
+              leaf.parent = this$1;
+            }
+            child.lines = child.lines.slice(0, remaining);
+            this$1.maybeSpill();
+          }
+          break
+        }
+        at -= sz;
+      }
+    },
+
+    // When a node has grown, check whether it should be split.
+    maybeSpill: function() {
+      if (this.children.length <= 10) { return }
+      var me = this;
+      do {
+        var spilled = me.children.splice(me.children.length - 5, 5);
+        var sibling = new BranchChunk(spilled);
+        if (!me.parent) { // Become the parent node
+          var copy = new BranchChunk(me.children);
+          copy.parent = me;
+          me.children = [copy, sibling];
+          me = copy;
+       } else {
+          me.size -= sibling.size;
+          me.height -= sibling.height;
+          var myIndex = indexOf(me.parent.children, me);
+          me.parent.children.splice(myIndex + 1, 0, sibling);
+        }
+        sibling.parent = me.parent;
+      } while (me.children.length > 10)
+      me.parent.maybeSpill();
+    },
+
+    iterN: function(at, n, op) {
+      var this$1 = this;
+
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this$1.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var used = Math.min(n, sz - at);
+          if (child.iterN(at, used, op)) { return true }
+          if ((n -= used) == 0) { break }
+          at = 0;
+        } else { at -= sz; }
+      }
+    }
+  };
+
+  // Line widgets are block elements displayed above or below a line.
+
+  var LineWidget = function(doc, node, options) {
+    var this$1 = this;
+
+    if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
+      { this$1[opt] = options[opt]; } } }
+    this.doc = doc;
+    this.node = node;
+  };
+
+  LineWidget.prototype.clear = function () {
+      var this$1 = this;
+
+    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
+    if (no == null || !ws) { return }
+    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1); } }
+    if (!ws.length) { line.widgets = null; }
+    var height = widgetHeight(this);
+    updateLineHeight(line, Math.max(0, line.height - height));
+    if (cm) {
+      runInOp(cm, function () {
+        adjustScrollWhenAboveVisible(cm, line, -height);
+        regLineChange(cm, no, "widget");
+      });
+      signalLater(cm, "lineWidgetCleared", cm, this, no);
+    }
+  };
+
+  LineWidget.prototype.changed = function () {
+      var this$1 = this;
+
+    var oldH = this.height, cm = this.doc.cm, line = this.line;
+    this.height = null;
+    var diff = widgetHeight(this) - oldH;
+    if (!diff) { return }
+    if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); }
+    if (cm) {
+      runInOp(cm, function () {
+        cm.curOp.forceUpdate = true;
+        adjustScrollWhenAboveVisible(cm, line, diff);
+        signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line));
+      });
+    }
+  };
+  eventMixin(LineWidget);
+
+  function adjustScrollWhenAboveVisible(cm, line, diff) {
+    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
+      { addToScrollTop(cm, diff); }
+  }
+
+  function addLineWidget(doc, handle, node, options) {
+    var widget = new LineWidget(doc, node, options);
+    var cm = doc.cm;
+    if (cm && widget.noHScroll) { cm.display.alignWidgets = true; }
+    changeLine(doc, handle, "widget", function (line) {
+      var widgets = line.widgets || (line.widgets = []);
+      if (widget.insertAt == null) { widgets.push(widget); }
+      else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); }
+      widget.line = line;
+      if (cm && !lineIsHidden(doc, line)) {
+        var aboveVisible = heightAtLine(line) < doc.scrollTop;
+        updateLineHeight(line, line.height + widgetHeight(widget));
+        if (aboveVisible) { addToScrollTop(cm, widget.height); }
+        cm.curOp.forceUpdate = true;
+      }
+      return true
+    });
+    if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)); }
+    return widget
+  }
+
+  // TEXTMARKERS
+
+  // Created with markText and setBookmark methods. A TextMarker is a
+  // handle that can be used to clear or find a marked position in the
+  // document. Line objects hold arrays (markedSpans) containing
+  // {from, to, marker} object pointing to such marker objects, and
+  // indicating that such a marker is present on that line. Multiple
+  // lines may point to the same marker when it spans across lines.
+  // The spans will have null for their from/to properties when the
+  // marker continues beyond the start/end of the line. Markers have
+  // links back to the lines they currently touch.
+
+  // Collapsed markers have unique ids, in order to be able to order
+  // them, which is needed for uniquely determining an outer marker
+  // when they overlap (they may nest, but not partially overlap).
+  var nextMarkerId = 0;
+
+  var TextMarker = function(doc, type) {
+    this.lines = [];
+    this.type = type;
+    this.doc = doc;
+    this.id = ++nextMarkerId;
+  };
+
+  // Clear the marker.
+  TextMarker.prototype.clear = function () {
+      var this$1 = this;
+
+    if (this.explicitlyCleared) { return }
+    var cm = this.doc.cm, withOp = cm && !cm.curOp;
+    if (withOp) { startOperation(cm); }
+    if (hasHandler(this, "clear")) {
+      var found = this.find();
+      if (found) { signalLater(this, "clear", found.from, found.to); }
+    }
+    var min = null, max = null;
+    for (var i = 0; i < this.lines.length; ++i) {
+      var line = this$1.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this$1);
+      if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text"); }
+      else if (cm) {
+        if (span.to != null) { max = lineNo(line); }
+        if (span.from != null) { min = lineNo(line); }
+      }
+      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+      if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)
+        { updateLineHeight(line, textHeight(cm.display)); }
+    }
+    if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
+      var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual);
+      if (len > cm.display.maxLineLength) {
+        cm.display.maxLine = visual;
+        cm.display.maxLineLength = len;
+        cm.display.maxLineChanged = true;
+      }
+    } }
+
+    if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); }
+    this.lines.length = 0;
+    this.explicitlyCleared = true;
+    if (this.atomic && this.doc.cantEdit) {
+      this.doc.cantEdit = false;
+      if (cm) { reCheckSelection(cm.doc); }
+    }
+    if (cm) { signalLater(cm, "markerCleared", cm, this, min, max); }
+    if (withOp) { endOperation(cm); }
+    if (this.parent) { this.parent.clear(); }
+  };
+
+  // Find the position of the marker in the document. Returns a {from,
+  // to} object by default. Side can be passed to get a specific side
+  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
+  // Pos objects returned contain a line object, rather than a line
+  // number (used to prevent looking up the same line twice).
+  TextMarker.prototype.find = function (side, lineObj) {
+      var this$1 = this;
+
+    if (side == null && this.type == "bookmark") { side = 1; }
+    var from, to;
+    for (var i = 0; i < this.lines.length; ++i) {
+      var line = this$1.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this$1);
+      if (span.from != null) {
+        from = Pos(lineObj ? line : lineNo(line), span.from);
+        if (side == -1) { return from }
+      }
+      if (span.to != null) {
+        to = Pos(lineObj ? line : lineNo(line), span.to);
+        if (side == 1) { return to }
+      }
+    }
+    return from && {from: from, to: to}
+  };
+
+  // Signals that the marker's widget changed, and surrounding layout
+  // should be recomputed.
+  TextMarker.prototype.changed = function () {
+      var this$1 = this;
+
+    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
+    if (!pos || !cm) { return }
+    runInOp(cm, function () {
+      var line = pos.line, lineN = lineNo(pos.line);
+      var view = findViewForLine(cm, lineN);
+      if (view) {
+        clearLineMeasurementCacheFor(view);
+        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
+      }
+      cm.curOp.updateMaxLine = true;
+      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
+        var oldHeight = widget.height;
+        widget.height = null;
+        var dHeight = widgetHeight(widget) - oldHeight;
+        if (dHeight)
+          { updateLineHeight(line, line.height + dHeight); }
+      }
+      signalLater(cm, "markerChanged", cm, this$1);
+    });
+  };
+
+  TextMarker.prototype.attachLine = function (line) {
+    if (!this.lines.length && this.doc.cm) {
+      var op = this.doc.cm.curOp;
+      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
+        { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); }
+    }
+    this.lines.push(line);
+  };
+
+  TextMarker.prototype.detachLine = function (line) {
+    this.lines.splice(indexOf(this.lines, line), 1);
+    if (!this.lines.length && this.doc.cm) {
+      var op = this.doc.cm.curOp
+      ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
+    }
+  };
+  eventMixin(TextMarker);
+
+  // Create a marker, wire it up to the right lines, and
+  function markText(doc, from, to, options, type) {
+    // Shared markers (across linked documents) are handled separately
+    // (markTextShared will call out to this again, once per
+    // document).
+    if (options && options.shared) { return markTextShared(doc, from, to, options, type) }
+    // Ensure we are in an operation.
+    if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }
+
+    var marker = new TextMarker(doc, type), diff = cmp(from, to);
+    if (options) { copyObj(options, marker, false); }
+    // Don't connect empty markers unless clearWhenEmpty is false
+    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
+      { return marker }
+    if (marker.replacedWith) {
+      // Showing up as a widget implies collapsed (widget replaces text)
+      marker.collapsed = true;
+      marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget");
+      if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true"); }
+      if (options.insertLeft) { marker.widgetNode.insertLeft = true; }
+    }
+    if (marker.collapsed) {
+      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
+          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
+        { throw new Error("Inserting collapsed marker partially overlapping an existing one") }
+      seeCollapsedSpans();
+    }
+
+    if (marker.addToHistory)
+      { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); }
+
+    var curLine = from.line, cm = doc.cm, updateMaxLine;
+    doc.iter(curLine, to.line + 1, function (line) {
+      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
+        { updateMaxLine = true; }
+      if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); }
+      addMarkedSpan(line, new MarkedSpan(marker,
+                                         curLine == from.line ? from.ch : null,
+                                         curLine == to.line ? to.ch : null));
+      ++curLine;
+    });
+    // lineIsHidden depends on the presence of the spans, so needs a second pass
+    if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {
+      if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); }
+    }); }
+
+    if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }); }
+
+    if (marker.readOnly) {
+      seeReadOnlySpans();
+      if (doc.history.done.length || doc.history.undone.length)
+        { doc.clearHistory(); }
+    }
+    if (marker.collapsed) {
+      marker.id = ++nextMarkerId;
+      marker.atomic = true;
+    }
+    if (cm) {
+      // Sync editor state
+      if (updateMaxLine) { cm.curOp.updateMaxLine = true; }
+      if (marker.collapsed)
+        { regChange(cm, from.line, to.line + 1); }
+      else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||
+               marker.attributes || marker.title)
+        { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text"); } }
+      if (marker.atomic) { reCheckSelection(cm.doc); }
+      signalLater(cm, "markerAdded", cm, marker);
+    }
+    return marker
+  }
+
+  // SHARED TEXTMARKERS
+
+  // A shared marker spans multiple linked documents. It is
+  // implemented as a meta-marker-object controlling multiple normal
+  // markers.
+  var SharedTextMarker = function(markers, primary) {
+    var this$1 = this;
+
+    this.markers = markers;
+    this.primary = primary;
+    for (var i = 0; i < markers.length; ++i)
+      { markers[i].parent = this$1; }
+  };
+
+  SharedTextMarker.prototype.clear = function () {
+      var this$1 = this;
+
+    if (this.explicitlyCleared) { return }
+    this.explicitlyCleared = true;
+    for (var i = 0; i < this.markers.length; ++i)
+      { this$1.markers[i].clear(); }
+    signalLater(this, "clear");
+  };
+
+  SharedTextMarker.prototype.find = function (side, lineObj) {
+    return this.primary.find(side, lineObj)
+  };
+  eventMixin(SharedTextMarker);
+
+  function markTextShared(doc, from, to, options, type) {
+    options = copyObj(options);
+    options.shared = false;
+    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
+    var widget = options.widgetNode;
+    linkedDocs(doc, function (doc) {
+      if (widget) { options.widgetNode = widget.cloneNode(true); }
+      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
+      for (var i = 0; i < doc.linked.length; ++i)
+        { if (doc.linked[i].isParent) { return } }
+      primary = lst(markers);
+    });
+    return new SharedTextMarker(markers, primary)
+  }
+
+  function findSharedMarkers(doc) {
+    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })
+  }
+
+  function copySharedMarkers(doc, markers) {
+    for (var i = 0; i < markers.length; i++) {
+      var marker = markers[i], pos = marker.find();
+      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
+      if (cmp(mFrom, mTo)) {
+        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
+        marker.markers.push(subMark);
+        subMark.parent = marker;
+      }
+    }
+  }
+
+  function detachSharedMarkers(markers) {
+    var loop = function ( i ) {
+      var marker = markers[i], linked = [marker.primary.doc];
+      linkedDocs(marker.primary.doc, function (d) { return linked.push(d); });
+      for (var j = 0; j < marker.markers.length; j++) {
+        var subMarker = marker.markers[j];
+        if (indexOf(linked, subMarker.doc) == -1) {
+          subMarker.parent = null;
+          marker.markers.splice(j--, 1);
+        }
+      }
+    };
+
+    for (var i = 0; i < markers.length; i++) loop( i );
+  }
+
+  var nextDocId = 0;
+  var Doc = function(text, mode, firstLine, lineSep, direction) {
+    if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }
+    if (firstLine == null) { firstLine = 0; }
+
+    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
+    this.first = firstLine;
+    this.scrollTop = this.scrollLeft = 0;
+    this.cantEdit = false;
+    this.cleanGeneration = 1;
+    this.modeFrontier = this.highlightFrontier = firstLine;
+    var start = Pos(firstLine, 0);
+    this.sel = simpleSelection(start);
+    this.history = new History(null);
+    this.id = ++nextDocId;
+    this.modeOption = mode;
+    this.lineSep = lineSep;
+    this.direction = (direction == "rtl") ? "rtl" : "ltr";
+    this.extend = false;
+
+    if (typeof text == "string") { text = this.splitLines(text); }
+    updateDoc(this, {from: start, to: start, text: text});
+    setSelection(this, simpleSelection(start), sel_dontScroll);
+  };
+
+  Doc.prototype = createObj(BranchChunk.prototype, {
+    constructor: Doc,
+    // Iterate over the document. Supports two forms -- with only one
+    // argument, it calls that for each line in the document. With
+    // three, it iterates over the range given by the first two (with
+    // the second being non-inclusive).
+    iter: function(from, to, op) {
+      if (op) { this.iterN(from - this.first, to - from, op); }
+      else { this.iterN(this.first, this.first + this.size, from); }
+    },
+
+    // Non-public interface for adding and removing lines.
+    insert: function(at, lines) {
+      var height = 0;
+      for (var i = 0; i < lines.length; ++i) { height += lines[i].height; }
+      this.insertInner(at - this.first, lines, height);
+    },
+    remove: function(at, n) { this.removeInner(at - this.first, n); },
+
+    // From here, the methods are part of the public interface. Most
+    // are also available from CodeMirror (editor) instances.
+
+    getValue: function(lineSep) {
+      var lines = getLines(this, this.first, this.first + this.size);
+      if (lineSep === false) { return lines }
+      return lines.join(lineSep || this.lineSeparator())
+    },
+    setValue: docMethodOp(function(code) {
+      var top = Pos(this.first, 0), last = this.first + this.size - 1;
+      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
+                        text: this.splitLines(code), origin: "setValue", full: true}, true);
+      if (this.cm) { scrollToCoords(this.cm, 0, 0); }
+      setSelection(this, simpleSelection(top), sel_dontScroll);
+    }),
+    replaceRange: function(code, from, to, origin) {
+      from = clipPos(this, from);
+      to = to ? clipPos(this, to) : from;
+      replaceRange(this, code, from, to, origin);
+    },
+    getRange: function(from, to, lineSep) {
+      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
+      if (lineSep === false) { return lines }
+      return lines.join(lineSep || this.lineSeparator())
+    },
+
+    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},
+
+    getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},
+    getLineNumber: function(line) {return lineNo(line)},
+
+    getLineHandleVisualStart: function(line) {
+      if (typeof line == "number") { line = getLine(this, line); }
+      return visualLine(line)
+    },
+
+    lineCount: function() {return this.size},
+    firstLine: function() {return this.first},
+    lastLine: function() {return this.first + this.size - 1},
+
+    clipPos: function(pos) {return clipPos(this, pos)},
+
+    getCursor: function(start) {
+      var range$$1 = this.sel.primary(), pos;
+      if (start == null || start == "head") { pos = range$$1.head; }
+      else if (start == "anchor") { pos = range$$1.anchor; }
+      else if (start == "end" || start == "to" || start === false) { pos = range$$1.to(); }
+      else { pos = range$$1.from(); }
+      return pos
+    },
+    listSelections: function() { return this.sel.ranges },
+    somethingSelected: function() {return this.sel.somethingSelected()},
+
+    setCursor: docMethodOp(function(line, ch, options) {
+      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
+    }),
+    setSelection: docMethodOp(function(anchor, head, options) {
+      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
+    }),
+    extendSelection: docMethodOp(function(head, other, options) {
+      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
+    }),
+    extendSelections: docMethodOp(function(heads, options) {
+      extendSelections(this, clipPosArray(this, heads), options);
+    }),
+    extendSelectionsBy: docMethodOp(function(f, options) {
+      var heads = map(this.sel.ranges, f);
+      extendSelections(this, clipPosArray(this, heads), options);
+    }),
+    setSelections: docMethodOp(function(ranges, primary, options) {
+      var this$1 = this;
+
+      if (!ranges.length) { return }
+      var out = [];
+      for (var i = 0; i < ranges.length; i++)
+        { out[i] = new Range(clipPos(this$1, ranges[i].anchor),
+                           clipPos(this$1, ranges[i].head)); }
+      if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }
+      setSelection(this, normalizeSelection(this.cm, out, primary), options);
+    }),
+    addSelection: docMethodOp(function(anchor, head, options) {
+      var ranges = this.sel.ranges.slice(0);
+      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
+      setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);
+    }),
+
+    getSelection: function(lineSep) {
+      var this$1 = this;
+
+      var ranges = this.sel.ranges, lines;
+      for (var i = 0; i < ranges.length; i++) {
+        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
+        lines = lines ? lines.concat(sel) : sel;
+      }
+      if (lineSep === false) { return lines }
+      else { return lines.join(lineSep || this.lineSeparator()) }
+    },
+    getSelections: function(lineSep) {
+      var this$1 = this;
+
+      var parts = [], ranges = this.sel.ranges;
+      for (var i = 0; i < ranges.length; i++) {
+        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
+        if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()); }
+        parts[i] = sel;
+      }
+      return parts
+    },
+    replaceSelection: function(code, collapse, origin) {
+      var dup = [];
+      for (var i = 0; i < this.sel.ranges.length; i++)
+        { dup[i] = code; }
+      this.replaceSelections(dup, collapse, origin || "+input");
+    },
+    replaceSelections: docMethodOp(function(code, collapse, origin) {
+      var this$1 = this;
+
+      var changes = [], sel = this.sel;
+      for (var i = 0; i < sel.ranges.length; i++) {
+        var range$$1 = sel.ranges[i];
+        changes[i] = {from: range$$1.from(), to: range$$1.to(), text: this$1.splitLines(code[i]), origin: origin};
+      }
+      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
+      for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
+        { makeChange(this$1, changes[i$1]); }
+      if (newSel) { setSelectionReplaceHistory(this, newSel); }
+      else if (this.cm) { ensureCursorVisible(this.cm); }
+    }),
+    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
+    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
+    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
+    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),
+
+    setExtending: function(val) {this.extend = val;},
+    getExtending: function() {return this.extend},
+
+    historySize: function() {
+      var hist = this.history, done = 0, undone = 0;
+      for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } }
+      for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }
+      return {undo: done, redo: undone}
+    },
+    clearHistory: function() {
+      var this$1 = this;
+
+      this.history = new History(this.history.maxGeneration);
+      linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true);
+    },
+
+    markClean: function() {
+      this.cleanGeneration = this.changeGeneration(true);
+    },
+    changeGeneration: function(forceSplit) {
+      if (forceSplit)
+        { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; }
+      return this.history.generation
+    },
+    isClean: function (gen) {
+      return this.history.generation == (gen || this.cleanGeneration)
+    },
+
+    getHistory: function() {
+      return {done: copyHistoryArray(this.history.done),
+              undone: copyHistoryArray(this.history.undone)}
+    },
+    setHistory: function(histData) {
+      var hist = this.history = new History(this.history.maxGeneration);
+      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
+      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
+    },
+
+    setGutterMarker: docMethodOp(function(line, gutterID, value) {
+      return changeLine(this, line, "gutter", function (line) {
+        var markers = line.gutterMarkers || (line.gutterMarkers = {});
+        markers[gutterID] = value;
+        if (!value && isEmpty(markers)) { line.gutterMarkers = null; }
+        return true
+      })
+    }),
+
+    clearGutter: docMethodOp(function(gutterID) {
+      var this$1 = this;
+
+      this.iter(function (line) {
+        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
+          changeLine(this$1, line, "gutter", function () {
+            line.gutterMarkers[gutterID] = null;
+            if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; }
+            return true
+          });
+        }
+      });
+    }),
+
+    lineInfo: function(line) {
+      var n;
+      if (typeof line == "number") {
+        if (!isLine(this, line)) { return null }
+        n = line;
+        line = getLine(this, line);
+        if (!line) { return null }
+      } else {
+        n = lineNo(line);
+        if (n == null) { return null }
+      }
+      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
+              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
+              widgets: line.widgets}
+    },
+
+    addLineClass: docMethodOp(function(handle, where, cls) {
+      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
+        var prop = where == "text" ? "textClass"
+                 : where == "background" ? "bgClass"
+                 : where == "gutter" ? "gutterClass" : "wrapClass";
+        if (!line[prop]) { line[prop] = cls; }
+        else if (classTest(cls).test(line[prop])) { return false }
+        else { line[prop] += " " + cls; }
+        return true
+      })
+    }),
+    removeLineClass: docMethodOp(function(handle, where, cls) {
+      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
+        var prop = where == "text" ? "textClass"
+                 : where == "background" ? "bgClass"
+                 : where == "gutter" ? "gutterClass" : "wrapClass";
+        var cur = line[prop];
+        if (!cur) { return false }
+        else if (cls == null) { line[prop] = null; }
+        else {
+          var found = cur.match(classTest(cls));
+          if (!found) { return false }
+          var end = found.index + found[0].length;
+          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
+        }
+        return true
+      })
+    }),
+
+    addLineWidget: docMethodOp(function(handle, node, options) {
+      return addLineWidget(this, handle, node, options)
+    }),
+    removeLineWidget: function(widget) { widget.clear(); },
+
+    markText: function(from, to, options) {
+      return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
+    },
+    setBookmark: function(pos, options) {
+      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
+                      insertLeft: options && options.insertLeft,
+                      clearWhenEmpty: false, shared: options && options.shared,
+                      handleMouseEvents: options && options.handleMouseEvents};
+      pos = clipPos(this, pos);
+      return markText(this, pos, pos, realOpts, "bookmark")
+    },
+    findMarksAt: function(pos) {
+      pos = clipPos(this, pos);
+      var markers = [], spans = getLine(this, pos.line).markedSpans;
+      if (spans) { for (var i = 0; i < spans.length; ++i) {
+        var span = spans[i];
+        if ((span.from == null || span.from <= pos.ch) &&
+            (span.to == null || span.to >= pos.ch))
+          { markers.push(span.marker.parent || span.marker); }
+      } }
+      return markers
+    },
+    findMarks: function(from, to, filter) {
+      from = clipPos(this, from); to = clipPos(this, to);
+      var found = [], lineNo$$1 = from.line;
+      this.iter(from.line, to.line + 1, function (line) {
+        var spans = line.markedSpans;
+        if (spans) { for (var i = 0; i < spans.length; i++) {
+          var span = spans[i];
+          if (!(span.to != null && lineNo$$1 == from.line && from.ch >= span.to ||
+                span.from == null && lineNo$$1 != from.line ||
+                span.from != null && lineNo$$1 == to.line && span.from >= to.ch) &&
+              (!filter || filter(span.marker)))
+            { found.push(span.marker.parent || span.marker); }
+        } }
+        ++lineNo$$1;
+      });
+      return found
+    },
+    getAllMarks: function() {
+      var markers = [];
+      this.iter(function (line) {
+        var sps = line.markedSpans;
+        if (sps) { for (var i = 0; i < sps.length; ++i)
+          { if (sps[i].from != null) { markers.push(sps[i].marker); } } }
+      });
+      return markers
+    },
+
+    posFromIndex: function(off) {
+      var ch, lineNo$$1 = this.first, sepSize = this.lineSeparator().length;
+      this.iter(function (line) {
+        var sz = line.text.length + sepSize;
+        if (sz > off) { ch = off; return true }
+        off -= sz;
+        ++lineNo$$1;
+      });
+      return clipPos(this, Pos(lineNo$$1, ch))
+    },
+    indexFromPos: function (coords) {
+      coords = clipPos(this, coords);
+      var index = coords.ch;
+      if (coords.line < this.first || coords.ch < 0) { return 0 }
+      var sepSize = this.lineSeparator().length;
+      this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
+        index += line.text.length + sepSize;
+      });
+      return index
+    },
+
+    copy: function(copyHistory) {
+      var doc = new Doc(getLines(this, this.first, this.first + this.size),
+                        this.modeOption, this.first, this.lineSep, this.direction);
+      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
+      doc.sel = this.sel;
+      doc.extend = false;
+      if (copyHistory) {
+        doc.history.undoDepth = this.history.undoDepth;
+        doc.setHistory(this.getHistory());
+      }
+      return doc
+    },
+
+    linkedDoc: function(options) {
+      if (!options) { options = {}; }
+      var from = this.first, to = this.first + this.size;
+      if (options.from != null && options.from > from) { from = options.from; }
+      if (options.to != null && options.to < to) { to = options.to; }
+      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);
+      if (options.sharedHist) { copy.history = this.history
+      ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
+      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
+      copySharedMarkers(copy, findSharedMarkers(this));
+      return copy
+    },
+    unlinkDoc: function(other) {
+      var this$1 = this;
+
+      if (other instanceof CodeMirror) { other = other.doc; }
+      if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
+        var link = this$1.linked[i];
+        if (link.doc != other) { continue }
+        this$1.linked.splice(i, 1);
+        other.unlinkDoc(this$1);
+        detachSharedMarkers(findSharedMarkers(this$1));
+        break
+      } }
+      // If the histories were shared, split them again
+      if (other.history == this.history) {
+        var splitIds = [other.id];
+        linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true);
+        other.history = new History(null);
+        other.history.done = copyHistoryArray(this.history.done, splitIds);
+        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
+      }
+    },
+    iterLinkedDocs: function(f) {linkedDocs(this, f);},
+
+    getMode: function() {return this.mode},
+    getEditor: function() {return this.cm},
+
+    splitLines: function(str) {
+      if (this.lineSep) { return str.split(this.lineSep) }
+      return splitLinesAuto(str)
+    },
+    lineSeparator: function() { return this.lineSep || "\n" },
+
+    setDirection: docMethodOp(function (dir) {
+      if (dir != "rtl") { dir = "ltr"; }
+      if (dir == this.direction) { return }
+      this.direction = dir;
+      this.iter(function (line) { return line.order = null; });
+      if (this.cm) { directionChanged(this.cm); }
+    })
+  });
+
+  // Public alias.
+  Doc.prototype.eachLine = Doc.prototype.iter;
+
+  // Kludge to work around strange IE behavior where it'll sometimes
+  // re-fire a series of drag-related events right after the drop (#1551)
+  var lastDrop = 0;
+
+  function onDrop(e) {
+    var cm = this;
+    clearDragCursor(cm);
+    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
+      { return }
+    e_preventDefault(e);
+    if (ie) { lastDrop = +new Date; }
+    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
+    if (!pos || cm.isReadOnly()) { return }
+    // Might be a file drop, in which case we simply extract the text
+    // and insert it.
+    if (files && files.length && window.FileReader && window.File) {
+      var n = files.length, text = Array(n), read = 0;
+      var markAsReadAndPasteIfAllFilesAreRead = function () {
+        if (++read == n) {
+          operation(cm, function () {
+            pos = clipPos(cm.doc, pos);
+            var change = {from: pos, to: pos,
+                          text: cm.doc.splitLines(
+                              text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())),
+                          origin: "paste"};
+            makeChange(cm.doc, change);
+            setSelectionReplaceHistory(cm.doc, simpleSelection(clipPos(cm.doc, pos), clipPos(cm.doc, changeEnd(change))));
+          })();
+        }
+      };
+      var readTextFromFile = function (file, i) {
+        if (cm.options.allowDropFileTypes &&
+            indexOf(cm.options.allowDropFileTypes, file.type) == -1) {
+          markAsReadAndPasteIfAllFilesAreRead();
+          return
+        }
+        var reader = new FileReader;
+        reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); };
+        reader.onload = function () {
+          var content = reader.result;
+          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) {
+            markAsReadAndPasteIfAllFilesAreRead();
+            return
+          }
+          text[i] = content;
+          markAsReadAndPasteIfAllFilesAreRead();
+        };
+        reader.readAsText(file);
+      };
+      for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); }
+    } else { // Normal drop
+      // Don't do a replace if the drop happened inside of the selected text.
+      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
+        cm.state.draggingText(e);
+        // Ensure the editor is re-focused
+        setTimeout(function () { return cm.display.input.focus(); }, 20);
+        return
+      }
+      try {
+        var text$1 = e.dataTransfer.getData("Text");
+        if (text$1) {
+          var selected;
+          if (cm.state.draggingText && !cm.state.draggingText.copy)
+            { selected = cm.listSelections(); }
+          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
+          if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)
+            { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag"); } }
+          cm.replaceSelection(text$1, "around", "paste");
+          cm.display.input.focus();
+        }
+      }
+      catch(e){}
+    }
+  }
+
+  function onDragStart(cm, e) {
+    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }
+    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }
+
+    e.dataTransfer.setData("Text", cm.getSelection());
+    e.dataTransfer.effectAllowed = "copyMove";
+
+    // Use dummy image instead of default browsers image.
+    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
+    if (e.dataTransfer.setDragImage && !safari) {
+      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
+      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
+      if (presto) {
+        img.width = img.height = 1;
+        cm.display.wrapper.appendChild(img);
+        // Force a relayout, or Opera won't use our image for some obscure reason
+        img._top = img.offsetTop;
+      }
+      e.dataTransfer.setDragImage(img, 0, 0);
+      if (presto) { img.parentNode.removeChild(img); }
+    }
+  }
+
+  function onDragOver(cm, e) {
+    var pos = posFromMouse(cm, e);
+    if (!pos) { return }
+    var frag = document.createDocumentFragment();
+    drawSelectionCursor(cm, pos, frag);
+    if (!cm.display.dragCursor) {
+      cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
+      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
+    }
+    removeChildrenAndAdd(cm.display.dragCursor, frag);
+  }
+
+  function clearDragCursor(cm) {
+    if (cm.display.dragCursor) {
+      cm.display.lineSpace.removeChild(cm.display.dragCursor);
+      cm.display.dragCursor = null;
+    }
+  }
+
+  // These must be handled carefully, because naively registering a
+  // handler for each editor will cause the editors to never be
+  // garbage collected.
+
+  function forEachCodeMirror(f) {
+    if (!document.getElementsByClassName) { return }
+    var byClass = document.getElementsByClassName("CodeMirror"), editors = [];
+    for (var i = 0; i < byClass.length; i++) {
+      var cm = byClass[i].CodeMirror;
+      if (cm) { editors.push(cm); }
+    }
+    if (editors.length) { editors[0].operation(function () {
+      for (var i = 0; i < editors.length; i++) { f(editors[i]); }
+    }); }
+  }
+
+  var globalsRegistered = false;
+  function ensureGlobalHandlers() {
+    if (globalsRegistered) { return }
+    registerGlobalHandlers();
+    globalsRegistered = true;
+  }
+  function registerGlobalHandlers() {
+    // When the window resizes, we need to refresh active editors.
+    var resizeTimer;
+    on(window, "resize", function () {
+      if (resizeTimer == null) { resizeTimer = setTimeout(function () {
+        resizeTimer = null;
+        forEachCodeMirror(onResize);
+      }, 100); }
+    });
+    // When the window loses focus, we want to show the editor as blurred
+    on(window, "blur", function () { return forEachCodeMirror(onBlur); });
+  }
+  // Called when the window resizes
+  function onResize(cm) {
+    var d = cm.display;
+    // Might be a text scaling operation, clear size caches.
+    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
+    d.scrollbarsClipped = false;
+    cm.setSize();
+  }
+
+  var keyNames = {
+    3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
+    19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
+    36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
+    46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
+    106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 145: "ScrollLock",
+    173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
+    221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
+    63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
+  };
+
+  // Number keys
+  for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); }
+  // Alphabetic keys
+  for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); }
+  // Function keys
+  for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2; }
+
+  var keyMap = {};
+
+  keyMap.basic = {
+    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
+    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
+    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
+    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
+    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
+    "Esc": "singleSelection"
+  };
+  // Note that the save and find-related commands aren't defined by
+  // default. User code or addons can define them. Unknown commands
+  // are simply ignored.
+  keyMap.pcDefault = {
+    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
+    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
+    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
+    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
+    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
+    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
+    "fallthrough": "basic"
+  };
+  // Very basic readline/emacs-style bindings, which are standard on Mac.
+  keyMap.emacsy = {
+    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
+    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
+    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars",
+    "Ctrl-O": "openLine"
+  };
+  keyMap.macDefault = {
+    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
+    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
+    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
+    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
+    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
+    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
+    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
+    "fallthrough": ["basic", "emacsy"]
+  };
+  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+
+  // KEYMAP DISPATCH
+
+  function normalizeKeyName(name) {
+    var parts = name.split(/-(?!$)/);
+    name = parts[parts.length - 1];
+    var alt, ctrl, shift, cmd;
+    for (var i = 0; i < parts.length - 1; i++) {
+      var mod = parts[i];
+      if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; }
+      else if (/^a(lt)?$/i.test(mod)) { alt = true; }
+      else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; }
+      else if (/^s(hift)?$/i.test(mod)) { shift = true; }
+      else { throw new Error("Unrecognized modifier name: " + mod) }
+    }
+    if (alt) { name = "Alt-" + name; }
+    if (ctrl) { name = "Ctrl-" + name; }
+    if (cmd) { name = "Cmd-" + name; }
+    if (shift) { name = "Shift-" + name; }
+    return name
+  }
+
+  // This is a kludge to keep keymaps mostly working as raw objects
+  // (backwards compatibility) while at the same time support features
+  // like normalization and multi-stroke key bindings. It compiles a
+  // new normalized keymap, and then updates the old object to reflect
+  // this.
+  function normalizeKeyMap(keymap) {
+    var copy = {};
+    for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {
+      var value = keymap[keyname];
+      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }
+      if (value == "...") { delete keymap[keyname]; continue }
+
+      var keys = map(keyname.split(" "), normalizeKeyName);
+      for (var i = 0; i < keys.length; i++) {
+        var val = (void 0), name = (void 0);
+        if (i == keys.length - 1) {
+          name = keys.join(" ");
+          val = value;
+        } else {
+          name = keys.slice(0, i + 1).join(" ");
+          val = "...";
+        }
+        var prev = copy[name];
+        if (!prev) { copy[name] = val; }
+        else if (prev != val) { throw new Error("Inconsistent bindings for " + name) }
+      }
+      delete keymap[keyname];
+    } }
+    for (var prop in copy) { keymap[prop] = copy[prop]; }
+    return keymap
+  }
+
+  function lookupKey(key, map$$1, handle, context) {
+    map$$1 = getKeyMap(map$$1);
+    var found = map$$1.call ? map$$1.call(key, context) : map$$1[key];
+    if (found === false) { return "nothing" }
+    if (found === "...") { return "multi" }
+    if (found != null && handle(found)) { return "handled" }
+
+    if (map$$1.fallthrough) {
+      if (Object.prototype.toString.call(map$$1.fallthrough) != "[object Array]")
+        { return lookupKey(key, map$$1.fallthrough, handle, context) }
+      for (var i = 0; i < map$$1.fallthrough.length; i++) {
+        var result = lookupKey(key, map$$1.fallthrough[i], handle, context);
+        if (result) { return result }
+      }
+    }
+  }
+
+  // Modifier key presses don't count as 'real' key presses for the
+  // purpose of keymap fallthrough.
+  function isModifierKey(value) {
+    var name = typeof value == "string" ? value : keyNames[value.keyCode];
+    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
+  }
+
+  function addModifierNames(name, event, noShift) {
+    var base = name;
+    if (event.altKey && base != "Alt") { name = "Alt-" + name; }
+    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name; }
+    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name; }
+    if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name; }
+    return name
+  }
+
+  // Look up the name of a key as indicated by an event object.
+  function keyName(event, noShift) {
+    if (presto && event.keyCode == 34 && event["char"]) { return false }
+    var name = keyNames[event.keyCode];
+    if (name == null || event.altGraphKey) { return false }
+    // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
+    // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
+    if (event.keyCode == 3 && event.code) { name = event.code; }
+    return addModifierNames(name, event, noShift)
+  }
+
+  function getKeyMap(val) {
+    return typeof val == "string" ? keyMap[val] : val
+  }
+
+  // Helper for deleting text near the selection(s), used to implement
+  // backspace, delete, and similar functionality.
+  function deleteNearSelection(cm, compute) {
+    var ranges = cm.doc.sel.ranges, kill = [];
+    // Build up a set of ranges to kill first, merging overlapping
+    // ranges.
+    for (var i = 0; i < ranges.length; i++) {
+      var toKill = compute(ranges[i]);
+      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
+        var replaced = kill.pop();
+        if (cmp(replaced.from, toKill.from) < 0) {
+          toKill.from = replaced.from;
+          break
+        }
+      }
+      kill.push(toKill);
+    }
+    // Next, remove those actual ranges.
+    runInOp(cm, function () {
+      for (var i = kill.length - 1; i >= 0; i--)
+        { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); }
+      ensureCursorVisible(cm);
+    });
+  }
+
+  function moveCharLogically(line, ch, dir) {
+    var target = skipExtendingChars(line.text, ch + dir, dir);
+    return target < 0 || target > line.text.length ? null : target
+  }
+
+  function moveLogically(line, start, dir) {
+    var ch = moveCharLogically(line, start.ch, dir);
+    return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before")
+  }
+
+  function endOfLine(visually, cm, lineObj, lineNo, dir) {
+    if (visually) {
+      if (cm.doc.direction == "rtl") { dir = -dir; }
+      var order = getOrder(lineObj, cm.doc.direction);
+      if (order) {
+        var part = dir < 0 ? lst(order) : order[0];
+        var moveInStorageOrder = (dir < 0) == (part.level == 1);
+        var sticky = moveInStorageOrder ? "after" : "before";
+        var ch;
+        // With a wrapped rtl chunk (possibly spanning multiple bidi parts),
+        // it could be that the last bidi part is not on the last visual line,
+        // since visual lines contain content order-consecutive chunks.
+        // Thus, in rtl, we are looking for the first (content-order) character
+        // in the rtl chunk that is on the last line (that is, the same line
+        // as the last (content-order) character).
+        if (part.level > 0 || cm.doc.direction == "rtl") {
+          var prep = prepareMeasureForLine(cm, lineObj);
+          ch = dir < 0 ? lineObj.text.length - 1 : 0;
+          var targetTop = measureCharPrepared(cm, prep, ch).top;
+          ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);
+          if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1); }
+        } else { ch = dir < 0 ? part.to : part.from; }
+        return new Pos(lineNo, ch, sticky)
+      }
+    }
+    return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after")
+  }
+
+  function moveVisually(cm, line, start, dir) {
+    var bidi = getOrder(line, cm.doc.direction);
+    if (!bidi) { return moveLogically(line, start, dir) }
+    if (start.ch >= line.text.length) {
+      start.ch = line.text.length;
+      start.sticky = "before";
+    } else if (start.ch <= 0) {
+      start.ch = 0;
+      start.sticky = "after";
+    }
+    var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos];
+    if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {
+      // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,
+      // nothing interesting happens.
+      return moveLogically(line, start, dir)
+    }
+
+    var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); };
+    var prep;
+    var getWrappedLineExtent = function (ch) {
+      if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }
+      prep = prep || prepareMeasureForLine(cm, line);
+      return wrappedLineExtentChar(cm, line, prep, ch)
+    };
+    var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch);
+
+    if (cm.doc.direction == "rtl" || part.level == 1) {
+      var moveInStorageOrder = (part.level == 1) == (dir < 0);
+      var ch = mv(start, moveInStorageOrder ? 1 : -1);
+      if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {
+        // Case 2: We move within an rtl part or in an rtl editor on the same visual line
+        var sticky = moveInStorageOrder ? "before" : "after";
+        return new Pos(start.line, ch, sticky)
+      }
+    }
+
+    // Case 3: Could not move within this bidi part in this visual line, so leave
+    // the current bidi part
+
+    var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {
+      var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder
+        ? new Pos(start.line, mv(ch, 1), "before")
+        : new Pos(start.line, ch, "after"); };
+
+      for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {
+        var part = bidi[partPos];
+        var moveInStorageOrder = (dir > 0) == (part.level != 1);
+        var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);
+        if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }
+        ch = moveInStorageOrder ? part.from : mv(part.to, -1);
+        if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }
+      }
+    };
+
+    // Case 3a: Look for other bidi parts on the same visual line
+    var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);
+    if (res) { return res }
+
+    // Case 3b: Look for other bidi parts on the next visual line
+    var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);
+    if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {
+      res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));
+      if (res) { return res }
+    }
+
+    // Case 4: Nowhere to move
+    return null
+  }
+
+  // Commands are parameter-less actions that can be performed on an
+  // editor, mostly used for keybindings.
+  var commands = {
+    selectAll: selectAll,
+    singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); },
+    killLine: function (cm) { return deleteNearSelection(cm, function (range) {
+      if (range.empty()) {
+        var len = getLine(cm.doc, range.head.line).text.length;
+        if (range.head.ch == len && range.head.line < cm.lastLine())
+          { return {from: range.head, to: Pos(range.head.line + 1, 0)} }
+        else
+          { return {from: range.head, to: Pos(range.head.line, len)} }
+      } else {
+        return {from: range.from(), to: range.to()}
+      }
+    }); },
+    deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({
+      from: Pos(range.from().line, 0),
+      to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
+    }); }); },
+    delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({
+      from: Pos(range.from().line, 0), to: range.from()
+    }); }); },
+    delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {
+      var top = cm.charCoords(range.head, "div").top + 5;
+      var leftPos = cm.coordsChar({left: 0, top: top}, "div");
+      return {from: leftPos, to: range.from()}
+    }); },
+    delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {
+      var top = cm.charCoords(range.head, "div").top + 5;
+      var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
+      return {from: range.from(), to: rightPos }
+    }); },
+    undo: function (cm) { return cm.undo(); },
+    redo: function (cm) { return cm.redo(); },
+    undoSelection: function (cm) { return cm.undoSelection(); },
+    redoSelection: function (cm) { return cm.redoSelection(); },
+    goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },
+    goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },
+    goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },
+      {origin: "+move", bias: 1}
+    ); },
+    goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },
+      {origin: "+move", bias: 1}
+    ); },
+    goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },
+      {origin: "+move", bias: -1}
+    ); },
+    goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {
+      var top = cm.cursorCoords(range.head, "div").top + 5;
+      return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
+    }, sel_move); },
+    goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {
+      var top = cm.cursorCoords(range.head, "div").top + 5;
+      return cm.coordsChar({left: 0, top: top}, "div")
+    }, sel_move); },
+    goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {
+      var top = cm.cursorCoords(range.head, "div").top + 5;
+      var pos = cm.coordsChar({left: 0, top: top}, "div");
+      if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) }
+      return pos
+    }, sel_move); },
+    goLineUp: function (cm) { return cm.moveV(-1, "line"); },
+    goLineDown: function (cm) { return cm.moveV(1, "line"); },
+    goPageUp: function (cm) { return cm.moveV(-1, "page"); },
+    goPageDown: function (cm) { return cm.moveV(1, "page"); },
+    goCharLeft: function (cm) { return cm.moveH(-1, "char"); },
+    goCharRight: function (cm) { return cm.moveH(1, "char"); },
+    goColumnLeft: function (cm) { return cm.moveH(-1, "column"); },
+    goColumnRight: function (cm) { return cm.moveH(1, "column"); },
+    goWordLeft: function (cm) { return cm.moveH(-1, "word"); },
+    goGroupRight: function (cm) { return cm.moveH(1, "group"); },
+    goGroupLeft: function (cm) { return cm.moveH(-1, "group"); },
+    goWordRight: function (cm) { return cm.moveH(1, "word"); },
+    delCharBefore: function (cm) { return cm.deleteH(-1, "char"); },
+    delCharAfter: function (cm) { return cm.deleteH(1, "char"); },
+    delWordBefore: function (cm) { return cm.deleteH(-1, "word"); },
+    delWordAfter: function (cm) { return cm.deleteH(1, "word"); },
+    delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); },
+    delGroupAfter: function (cm) { return cm.deleteH(1, "group"); },
+    indentAuto: function (cm) { return cm.indentSelection("smart"); },
+    indentMore: function (cm) { return cm.indentSelection("add"); },
+    indentLess: function (cm) { return cm.indentSelection("subtract"); },
+    insertTab: function (cm) { return cm.replaceSelection("\t"); },
+    insertSoftTab: function (cm) {
+      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
+      for (var i = 0; i < ranges.length; i++) {
+        var pos = ranges[i].from();
+        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
+        spaces.push(spaceStr(tabSize - col % tabSize));
+      }
+      cm.replaceSelections(spaces);
+    },
+    defaultTab: function (cm) {
+      if (cm.somethingSelected()) { cm.indentSelection("add"); }
+      else { cm.execCommand("insertTab"); }
+    },
+    // Swap the two chars left and right of each selection's head.
+    // Move cursor behind the two swapped characters afterwards.
+    //
+    // Doesn't consider line feeds a character.
+    // Doesn't scan more than one line above to find a character.
+    // Doesn't do anything on an empty line.
+    // Doesn't do anything with non-empty selections.
+    transposeChars: function (cm) { return runInOp(cm, function () {
+      var ranges = cm.listSelections(), newSel = [];
+      for (var i = 0; i < ranges.length; i++) {
+        if (!ranges[i].empty()) { continue }
+        var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
+        if (line) {
+          if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); }
+          if (cur.ch > 0) {
+            cur = new Pos(cur.line, cur.ch + 1);
+            cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
+                            Pos(cur.line, cur.ch - 2), cur, "+transpose");
+          } else if (cur.line > cm.doc.first) {
+            var prev = getLine(cm.doc, cur.line - 1).text;
+            if (prev) {
+              cur = new Pos(cur.line, 1);
+              cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
+                              prev.charAt(prev.length - 1),
+                              Pos(cur.line - 1, prev.length - 1), cur, "+transpose");
+            }
+          }
+        }
+        newSel.push(new Range(cur, cur));
+      }
+      cm.setSelections(newSel);
+    }); },
+    newlineAndIndent: function (cm) { return runInOp(cm, function () {
+      var sels = cm.listSelections();
+      for (var i = sels.length - 1; i >= 0; i--)
+        { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input"); }
+      sels = cm.listSelections();
+      for (var i$1 = 0; i$1 < sels.length; i$1++)
+        { cm.indentLine(sels[i$1].from().line, null, true); }
+      ensureCursorVisible(cm);
+    }); },
+    openLine: function (cm) { return cm.replaceSelection("\n", "start"); },
+    toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }
+  };
+
+
+  function lineStart(cm, lineN) {
+    var line = getLine(cm.doc, lineN);
+    var visual = visualLine(line);
+    if (visual != line) { lineN = lineNo(visual); }
+    return endOfLine(true, cm, visual, lineN, 1)
+  }
+  function lineEnd(cm, lineN) {
+    var line = getLine(cm.doc, lineN);
+    var visual = visualLineEnd(line);
+    if (visual != line) { lineN = lineNo(visual); }
+    return endOfLine(true, cm, line, lineN, -1)
+  }
+  function lineStartSmart(cm, pos) {
+    var start = lineStart(cm, pos.line);
+    var line = getLine(cm.doc, start.line);
+    var order = getOrder(line, cm.doc.direction);
+    if (!order || order[0].level == 0) {
+      var firstNonWS = Math.max(start.ch, line.text.search(/\S/));
+      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
+      return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)
+    }
+    return start
+  }
+
+  // Run a handler that was bound to a key.
+  function doHandleBinding(cm, bound, dropShift) {
+    if (typeof bound == "string") {
+      bound = commands[bound];
+      if (!bound) { return false }
+    }
+    // Ensure previous input has been read, so that the handler sees a
+    // consistent view of the document
+    cm.display.input.ensurePolled();
+    var prevShift = cm.display.shift, done = false;
+    try {
+      if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
+      if (dropShift) { cm.display.shift = false; }
+      done = bound(cm) != Pass;
+    } finally {
+      cm.display.shift = prevShift;
+      cm.state.suppressEdits = false;
+    }
+    return done
+  }
+
+  function lookupKeyForEditor(cm, name, handle) {
+    for (var i = 0; i < cm.state.keyMaps.length; i++) {
+      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
+      if (result) { return result }
+    }
+    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
+      || lookupKey(name, cm.options.keyMap, handle, cm)
+  }
+
+  // Note that, despite the name, this function is also used to check
+  // for bound mouse clicks.
+
+  var stopSeq = new Delayed;
+
+  function dispatchKey(cm, name, e, handle) {
+    var seq = cm.state.keySeq;
+    if (seq) {
+      if (isModifierKey(name)) { return "handled" }
+      if (/\'$/.test(name))
+        { cm.state.keySeq = null; }
+      else
+        { stopSeq.set(50, function () {
+          if (cm.state.keySeq == seq) {
+            cm.state.keySeq = null;
+            cm.display.input.reset();
+          }
+        }); }
+      if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true }
+    }
+    return dispatchKeyInner(cm, name, e, handle)
+  }
+
+  function dispatchKeyInner(cm, name, e, handle) {
+    var result = lookupKeyForEditor(cm, name, handle);
+
+    if (result == "multi")
+      { cm.state.keySeq = name; }
+    if (result == "handled")
+      { signalLater(cm, "keyHandled", cm, name, e); }
+
+    if (result == "handled" || result == "multi") {
+      e_preventDefault(e);
+      restartBlink(cm);
+    }
+
+    return !!result
+  }
+
+  // Handle a key from the keydown event.
+  function handleKeyBinding(cm, e) {
+    var name = keyName(e, true);
+    if (!name) { return false }
+
+    if (e.shiftKey && !cm.state.keySeq) {
+      // First try to resolve full name (including 'Shift-'). Failing
+      // that, see if there is a cursor-motion command (starting with
+      // 'go') bound to the keyname without 'Shift-'.
+      return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); })
+          || dispatchKey(cm, name, e, function (b) {
+               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
+                 { return doHandleBinding(cm, b) }
+             })
+    } else {
+      return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })
+    }
+  }
+
+  // Handle a key from the keypress event
+  function handleCharBinding(cm, e, ch) {
+    return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); })
+  }
+
+  var lastStoppedKey = null;
+  function onKeyDown(e) {
+    var cm = this;
+    cm.curOp.focus = activeElt();
+    if (signalDOMEvent(cm, e)) { return }
+    // IE does strange things with escape.
+    if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; }
+    var code = e.keyCode;
+    cm.display.shift = code == 16 || e.shiftKey;
+    var handled = handleKeyBinding(cm, e);
+    if (presto) {
+      lastStoppedKey = handled ? code : null;
+      // Opera has no cut event... we try to at least catch the key combo
+      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
+        { cm.replaceSelection("", null, "cut"); }
+    }
+    if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand)
+      { document.execCommand("cut"); }
+
+    // Turn mouse into crosshair when Alt is held on Mac.
+    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
+      { showCrossHair(cm); }
+  }
+
+  function showCrossHair(cm) {
+    var lineDiv = cm.display.lineDiv;
+    addClass(lineDiv, "CodeMirror-crosshair");
+
+    function up(e) {
+      if (e.keyCode == 18 || !e.altKey) {
+        rmClass(lineDiv, "CodeMirror-crosshair");
+        off(document, "keyup", up);
+        off(document, "mouseover", up);
+      }
+    }
+    on(document, "keyup", up);
+    on(document, "mouseover", up);
+  }
+
+  function onKeyUp(e) {
+    if (e.keyCode == 16) { this.doc.sel.shift = false; }
+    signalDOMEvent(this, e);
+  }
+
+  function onKeyPress(e) {
+    var cm = this;
+    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }
+    var keyCode = e.keyCode, charCode = e.charCode;
+    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}
+    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }
+    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
+    // Some browsers fire keypress events for backspace
+    if (ch == "\x08") { return }
+    if (handleCharBinding(cm, e, ch)) { return }
+    cm.display.input.onKeyPress(e);
+  }
+
+  var DOUBLECLICK_DELAY = 400;
+
+  var PastClick = function(time, pos, button) {
+    this.time = time;
+    this.pos = pos;
+    this.button = button;
+  };
+
+  PastClick.prototype.compare = function (time, pos, button) {
+    return this.time + DOUBLECLICK_DELAY > time &&
+      cmp(pos, this.pos) == 0 && button == this.button
+  };
+
+  var lastClick, lastDoubleClick;
+  function clickRepeat(pos, button) {
+    var now = +new Date;
+    if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
+      lastClick = lastDoubleClick = null;
+      return "triple"
+    } else if (lastClick && lastClick.compare(now, pos, button)) {
+      lastDoubleClick = new PastClick(now, pos, button);
+      lastClick = null;
+      return "double"
+    } else {
+      lastClick = new PastClick(now, pos, button);
+      lastDoubleClick = null;
+      return "single"
+    }
+  }
+
+  // A mouse down can be a single click, double click, triple click,
+  // start of selection drag, start of text drag, new cursor
+  // (ctrl-click), rectangle drag (alt-drag), or xwin
+  // middle-click-paste. Or it might be a click on something we should
+  // not interfere with, such as a scrollbar or widget.
+  function onMouseDown(e) {
+    var cm = this, display = cm.display;
+    if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }
+    display.input.ensurePolled();
+    display.shift = e.shiftKey;
+
+    if (eventInWidget(display, e)) {
+      if (!webkit) {
+        // Briefly turn off draggability, to allow widgets to do
+        // normal dragging things.
+        display.scroller.draggable = false;
+        setTimeout(function () { return display.scroller.draggable = true; }, 100);
+      }
+      return
+    }
+    if (clickInGutter(cm, e)) { return }
+    var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single";
+    window.focus();
+
+    // #3261: make sure, that we're not starting a second selection
+    if (button == 1 && cm.state.selectingText)
+      { cm.state.selectingText(e); }
+
+    if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }
+
+    if (button == 1) {
+      if (pos) { leftButtonDown(cm, pos, repeat, e); }
+      else if (e_target(e) == display.scroller) { e_preventDefault(e); }
+    } else if (button == 2) {
+      if (pos) { extendSelection(cm.doc, pos); }
+      setTimeout(function () { return display.input.focus(); }, 20);
+    } else if (button == 3) {
+      if (captureRightClick) { cm.display.input.onContextMenu(e); }
+      else { delayBlurEvent(cm); }
+    }
+  }
+
+  function handleMappedButton(cm, button, pos, repeat, event) {
+    var name = "Click";
+    if (repeat == "double") { name = "Double" + name; }
+    else if (repeat == "triple") { name = "Triple" + name; }
+    name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name;
+
+    return dispatchKey(cm,  addModifierNames(name, event), event, function (bound) {
+      if (typeof bound == "string") { bound = commands[bound]; }
+      if (!bound) { return false }
+      var done = false;
+      try {
+        if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
+        done = bound(cm, pos) != Pass;
+      } finally {
+        cm.state.suppressEdits = false;
+      }
+      return done
+    })
+  }
+
+  function configureMouse(cm, repeat, event) {
+    var option = cm.getOption("configureMouse");
+    var value = option ? option(cm, repeat, event) : {};
+    if (value.unit == null) {
+      var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;
+      value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line";
+    }
+    if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; }
+    if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; }
+    if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); }
+    return value
+  }
+
+  function leftButtonDown(cm, pos, repeat, event) {
+    if (ie) { setTimeout(bind(ensureFocus, cm), 0); }
+    else { cm.curOp.focus = activeElt(); }
+
+    var behavior = configureMouse(cm, repeat, event);
+
+    var sel = cm.doc.sel, contained;
+    if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
+        repeat == "single" && (contained = sel.contains(pos)) > -1 &&
+        (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
+        (cmp(contained.to(), pos) > 0 || pos.xRel < 0))
+      { leftButtonStartDrag(cm, event, pos, behavior); }
+    else
+      { leftButtonSelect(cm, event, pos, behavior); }
+  }
+
+  // Start a text drag. When it ends, see if any dragging actually
+  // happen, and treat as a click if it didn't.
+  function leftButtonStartDrag(cm, event, pos, behavior) {
+    var display = cm.display, moved = false;
+    var dragEnd = operation(cm, function (e) {
+      if (webkit) { display.scroller.draggable = false; }
+      cm.state.draggingText = false;
+      off(display.wrapper.ownerDocument, "mouseup", dragEnd);
+      off(display.wrapper.ownerDocument, "mousemove", mouseMove);
+      off(display.scroller, "dragstart", dragStart);
+      off(display.scroller, "drop", dragEnd);
+      if (!moved) {
+        e_preventDefault(e);
+        if (!behavior.addNew)
+          { extendSelection(cm.doc, pos, null, null, behavior.extend); }
+        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
+        if (webkit || ie && ie_version == 9)
+          { setTimeout(function () {display.wrapper.ownerDocument.body.focus(); display.input.focus();}, 20); }
+        else
+          { display.input.focus(); }
+      }
+    });
+    var mouseMove = function(e2) {
+      moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;
+    };
+    var dragStart = function () { return moved = true; };
+    // Let the drag handler handle this.
+    if (webkit) { display.scroller.draggable = true; }
+    cm.state.draggingText = dragEnd;
+    dragEnd.copy = !behavior.moveOnDrag;
+    // IE's approach to draggable
+    if (display.scroller.dragDrop) { display.scroller.dragDrop(); }
+    on(display.wrapper.ownerDocument, "mouseup", dragEnd);
+    on(display.wrapper.ownerDocument, "mousemove", mouseMove);
+    on(display.scroller, "dragstart", dragStart);
+    on(display.scroller, "drop", dragEnd);
+
+    delayBlurEvent(cm);
+    setTimeout(function () { return display.input.focus(); }, 20);
+  }
+
+  function rangeForUnit(cm, pos, unit) {
+    if (unit == "char") { return new Range(pos, pos) }
+    if (unit == "word") { return cm.findWordAt(pos) }
+    if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
+    var result = unit(cm, pos);
+    return new Range(result.from, result.to)
+  }
+
+  // Normal selection, as opposed to text dragging.
+  function leftButtonSelect(cm, event, start, behavior) {
+    var display = cm.display, doc = cm.doc;
+    e_preventDefault(event);
+
+    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
+    if (behavior.addNew && !behavior.extend) {
+      ourIndex = doc.sel.contains(start);
+      if (ourIndex > -1)
+        { ourRange = ranges[ourIndex]; }
+      else
+        { ourRange = new Range(start, start); }
+    } else {
+      ourRange = doc.sel.primary();
+      ourIndex = doc.sel.primIndex;
+    }
+
+    if (behavior.unit == "rectangle") {
+      if (!behavior.addNew) { ourRange = new Range(start, start); }
+      start = posFromMouse(cm, event, true, true);
+      ourIndex = -1;
+    } else {
+      var range$$1 = rangeForUnit(cm, start, behavior.unit);
+      if (behavior.extend)
+        { ourRange = extendRange(ourRange, range$$1.anchor, range$$1.head, behavior.extend); }
+      else
+        { ourRange = range$$1; }
+    }
+
+    if (!behavior.addNew) {
+      ourIndex = 0;
+      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
+      startSel = doc.sel;
+    } else if (ourIndex == -1) {
+      ourIndex = ranges.length;
+      setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),
+                   {scroll: false, origin: "*mouse"});
+    } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
+      setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
+                   {scroll: false, origin: "*mouse"});
+      startSel = doc.sel;
+    } else {
+      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
+    }
+
+    var lastPos = start;
+    function extendTo(pos) {
+      if (cmp(lastPos, pos) == 0) { return }
+      lastPos = pos;
+
+      if (behavior.unit == "rectangle") {
+        var ranges = [], tabSize = cm.options.tabSize;
+        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
+        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
+        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
+        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
+             line <= end; line++) {
+          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
+          if (left == right)
+            { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); }
+          else if (text.length > leftPos)
+            { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); }
+        }
+        if (!ranges.length) { ranges.push(new Range(start, start)); }
+        setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
+                     {origin: "*mouse", scroll: false});
+        cm.scrollIntoView(pos);
+      } else {
+        var oldRange = ourRange;
+        var range$$1 = rangeForUnit(cm, pos, behavior.unit);
+        var anchor = oldRange.anchor, head;
+        if (cmp(range$$1.anchor, anchor) > 0) {
+          head = range$$1.head;
+          anchor = minPos(oldRange.from(), range$$1.anchor);
+        } else {
+          head = range$$1.anchor;
+          anchor = maxPos(oldRange.to(), range$$1.head);
+        }
+        var ranges$1 = startSel.ranges.slice(0);
+        ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));
+        setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);
+      }
+    }
+
+    var editorSize = display.wrapper.getBoundingClientRect();
+    // Used to ensure timeout re-tries don't fire when another extend
+    // happened in the meantime (clearTimeout isn't reliable -- at
+    // least on Chrome, the timeouts still happen even when cleared,
+    // if the clear happens after their scheduled firing time).
+    var counter = 0;
+
+    function extend(e) {
+      var curCount = ++counter;
+      var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle");
+      if (!cur) { return }
+      if (cmp(cur, lastPos) != 0) {
+        cm.curOp.focus = activeElt();
+        extendTo(cur);
+        var visible = visibleLines(display, doc);
+        if (cur.line >= visible.to || cur.line < visible.from)
+          { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); }
+      } else {
+        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
+        if (outside) { setTimeout(operation(cm, function () {
+          if (counter != curCount) { return }
+          display.scroller.scrollTop += outside;
+          extend(e);
+        }), 50); }
+      }
+    }
+
+    function done(e) {
+      cm.state.selectingText = false;
+      counter = Infinity;
+      // If e is null or undefined we interpret this as someone trying
+      // to explicitly cancel the selection rather than the user
+      // letting go of the mouse button.
+      if (e) {
+        e_preventDefault(e);
+        display.input.focus();
+      }
+      off(display.wrapper.ownerDocument, "mousemove", move);
+      off(display.wrapper.ownerDocument, "mouseup", up);
+      doc.history.lastSelOrigin = null;
+    }
+
+    var move = operation(cm, function (e) {
+      if (e.buttons === 0 || !e_button(e)) { done(e); }
+      else { extend(e); }
+    });
+    var up = operation(cm, done);
+    cm.state.selectingText = up;
+    on(display.wrapper.ownerDocument, "mousemove", move);
+    on(display.wrapper.ownerDocument, "mouseup", up);
+  }
+
+  // Used when mouse-selecting to adjust the anchor to the proper side
+  // of a bidi jump depending on the visual position of the head.
+  function bidiSimplify(cm, range$$1) {
+    var anchor = range$$1.anchor;
+    var head = range$$1.head;
+    var anchorLine = getLine(cm.doc, anchor.line);
+    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range$$1 }
+    var order = getOrder(anchorLine);
+    if (!order) { return range$$1 }
+    var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];
+    if (part.from != anchor.ch && part.to != anchor.ch) { return range$$1 }
+    var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);
+    if (boundary == 0 || boundary == order.length) { return range$$1 }
+
+    // Compute the relative visual position of the head compared to the
+    // anchor (<0 is to the left, >0 to the right)
+    var leftSide;
+    if (head.line != anchor.line) {
+      leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0;
+    } else {
+      var headIndex = getBidiPartAt(order, head.ch, head.sticky);
+      var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);
+      if (headIndex == boundary - 1 || headIndex == boundary)
+        { leftSide = dir < 0; }
+      else
+        { leftSide = dir > 0; }
+    }
+
+    var usePart = order[boundary + (leftSide ? -1 : 0)];
+    var from = leftSide == (usePart.level == 1);
+    var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before";
+    return anchor.ch == ch && anchor.sticky == sticky ? range$$1 : new Range(new Pos(anchor.line, ch, sticky), head)
+  }
+
+
+  // Determines whether an event happened in the gutter, and fires the
+  // handlers for the corresponding event.
+  function gutterEvent(cm, e, type, prevent) {
+    var mX, mY;
+    if (e.touches) {
+      mX = e.touches[0].clientX;
+      mY = e.touches[0].clientY;
+    } else {
+      try { mX = e.clientX; mY = e.clientY; }
+      catch(e) { return false }
+    }
+    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }
+    if (prevent) { e_preventDefault(e); }
+
+    var display = cm.display;
+    var lineBox = display.lineDiv.getBoundingClientRect();
+
+    if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }
+    mY -= lineBox.top - display.viewOffset;
+
+    for (var i = 0; i < cm.display.gutterSpecs.length; ++i) {
+      var g = display.gutters.childNodes[i];
+      if (g && g.getBoundingClientRect().right >= mX) {
+        var line = lineAtHeight(cm.doc, mY);
+        var gutter = cm.display.gutterSpecs[i];
+        signal(cm, type, cm, line, gutter.className, e);
+        return e_defaultPrevented(e)
+      }
+    }
+  }
+
+  function clickInGutter(cm, e) {
+    return gutterEvent(cm, e, "gutterClick", true)
+  }
+
+  // CONTEXT MENU HANDLING
+
+  // To make the context menu work, we need to briefly unhide the
+  // textarea (making it as unobtrusive as possible) to let the
+  // right-click take effect on it.
+  function onContextMenu(cm, e) {
+    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }
+    if (signalDOMEvent(cm, e, "contextmenu")) { return }
+    if (!captureRightClick) { cm.display.input.onContextMenu(e); }
+  }
+
+  function contextMenuInGutter(cm, e) {
+    if (!hasHandler(cm, "gutterContextMenu")) { return false }
+    return gutterEvent(cm, e, "gutterContextMenu", false)
+  }
+
+  function themeChanged(cm) {
+    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
+      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+    clearCaches(cm);
+  }
+
+  var Init = {toString: function(){return "CodeMirror.Init"}};
+
+  var defaults = {};
+  var optionHandlers = {};
+
+  function defineOptions(CodeMirror) {
+    var optionHandlers = CodeMirror.optionHandlers;
+
+    function option(name, deflt, handle, notOnInit) {
+      CodeMirror.defaults[name] = deflt;
+      if (handle) { optionHandlers[name] =
+        notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; }
+    }
+
+    CodeMirror.defineOption = option;
+
+    // Passed to option handlers when there is no old value.
+    CodeMirror.Init = Init;
+
+    // These two are, on init, called from the constructor because they
+    // have to be initialized before the editor can start at all.
+    option("value", "", function (cm, val) { return cm.setValue(val); }, true);
+    option("mode", null, function (cm, val) {
+      cm.doc.modeOption = val;
+      loadMode(cm);
+    }, true);
+
+    option("indentUnit", 2, loadMode, true);
+    option("indentWithTabs", false);
+    option("smartIndent", true);
+    option("tabSize", 4, function (cm) {
+      resetModeState(cm);
+      clearCaches(cm);
+      regChange(cm);
+    }, true);
+
+    option("lineSeparator", null, function (cm, val) {
+      cm.doc.lineSep = val;
+      if (!val) { return }
+      var newBreaks = [], lineNo = cm.doc.first;
+      cm.doc.iter(function (line) {
+        for (var pos = 0;;) {
+          var found = line.text.indexOf(val, pos);
+          if (found == -1) { break }
+          pos = found + val.length;
+          newBreaks.push(Pos(lineNo, found));
+        }
+        lineNo++;
+      });
+      for (var i = newBreaks.length - 1; i >= 0; i--)
+        { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); }
+    });
+    option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff\ufff9-\ufffc]/g, function (cm, val, old) {
+      cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
+      if (old != Init) { cm.refresh(); }
+    });
+    option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true);
+    option("electricChars", true);
+    option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
+      throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
+    }, true);
+    option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true);
+    option("autocorrect", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true);
+    option("autocapitalize", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true);
+    option("rtlMoveVisually", !windows);
+    option("wholeLineUpdateBefore", true);
+
+    option("theme", "default", function (cm) {
+      themeChanged(cm);
+      updateGutters(cm);
+    }, true);
+    option("keyMap", "default", function (cm, val, old) {
+      var next = getKeyMap(val);
+      var prev = old != Init && getKeyMap(old);
+      if (prev && prev.detach) { prev.detach(cm, next); }
+      if (next.attach) { next.attach(cm, prev || null); }
+    });
+    option("extraKeys", null);
+    option("configureMouse", null);
+
+    option("lineWrapping", false, wrappingChanged, true);
+    option("gutters", [], function (cm, val) {
+      cm.display.gutterSpecs = getGutters(val, cm.options.lineNumbers);
+      updateGutters(cm);
+    }, true);
+    option("fixedGutter", true, function (cm, val) {
+      cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
+      cm.refresh();
+    }, true);
+    option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true);
+    option("scrollbarStyle", "native", function (cm) {
+      initScrollbars(cm);
+      updateScrollbars(cm);
+      cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
+      cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
+    }, true);
+    option("lineNumbers", false, function (cm, val) {
+      cm.display.gutterSpecs = getGutters(cm.options.gutters, val);
+      updateGutters(cm);
+    }, true);
+    option("firstLineNumber", 1, updateGutters, true);
+    option("lineNumberFormatter", function (integer) { return integer; }, updateGutters, true);
+    option("showCursorWhenSelecting", false, updateSelection, true);
+
+    option("resetSelectionOnContextMenu", true);
+    option("lineWiseCopyCut", true);
+    option("pasteLinesPerSelection", true);
+    option("selectionsMayTouch", false);
+
+    option("readOnly", false, function (cm, val) {
+      if (val == "nocursor") {
+        onBlur(cm);
+        cm.display.input.blur();
+      }
+      cm.display.input.readOnlyChanged(val);
+    });
+
+    option("screenReaderLabel", null, function (cm, val) {
+      val = (val === '') ? null : val;
+      cm.display.input.screenReaderLabelChanged(val);
+    });
+
+    option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true);
+    option("dragDrop", true, dragDropChanged);
+    option("allowDropFileTypes", null);
+
+    option("cursorBlinkRate", 530);
+    option("cursorScrollMargin", 0);
+    option("cursorHeight", 1, updateSelection, true);
+    option("singleCursorHeightPerLine", true, updateSelection, true);
+    option("workTime", 100);
+    option("workDelay", 100);
+    option("flattenSpans", true, resetModeState, true);
+    option("addModeClass", false, resetModeState, true);
+    option("pollInterval", 100);
+    option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; });
+    option("historyEventDelay", 1250);
+    option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true);
+    option("maxHighlightLength", 10000, resetModeState, true);
+    option("moveInputWithCursor", true, function (cm, val) {
+      if (!val) { cm.display.input.resetPosition(); }
+    });
+
+    option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; });
+    option("autofocus", null);
+    option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true);
+    option("phrases", null);
+  }
+
+  function dragDropChanged(cm, value, old) {
+    var wasOn = old && old != Init;
+    if (!value != !wasOn) {
+      var funcs = cm.display.dragFunctions;
+      var toggle = value ? on : off;
+      toggle(cm.display.scroller, "dragstart", funcs.start);
+      toggle(cm.display.scroller, "dragenter", funcs.enter);
+      toggle(cm.display.scroller, "dragover", funcs.over);
+      toggle(cm.display.scroller, "dragleave", funcs.leave);
+      toggle(cm.display.scroller, "drop", funcs.drop);
+    }
+  }
+
+  function wrappingChanged(cm) {
+    if (cm.options.lineWrapping) {
+      addClass(cm.display.wrapper, "CodeMirror-wrap");
+      cm.display.sizer.style.minWidth = "";
+      cm.display.sizerWidth = null;
+    } else {
+      rmClass(cm.display.wrapper, "CodeMirror-wrap");
+      findMaxLine(cm);
+    }
+    estimateLineHeights(cm);
+    regChange(cm);
+    clearCaches(cm);
+    setTimeout(function () { return updateScrollbars(cm); }, 100);
+  }
+
+  // A CodeMirror instance represents an editor. This is the object
+  // that user code is usually dealing with.
+
+  function CodeMirror(place, options) {
+    var this$1 = this;
+
+    if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }
+
+    this.options = options = options ? copyObj(options) : {};
+    // Determine effective options based on given values and defaults.
+    copyObj(defaults, options, false);
+
+    var doc = options.value;
+    if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); }
+    else if (options.mode) { doc.modeOption = options.mode; }
+    this.doc = doc;
+
+    var input = new CodeMirror.inputStyles[options.inputStyle](this);
+    var display = this.display = new Display(place, doc, input, options);
+    display.wrapper.CodeMirror = this;
+    themeChanged(this);
+    if (options.lineWrapping)
+      { this.display.wrapper.className += " CodeMirror-wrap"; }
+    initScrollbars(this);
+
+    this.state = {
+      keyMaps: [],  // stores maps added by addKeyMap
+      overlays: [], // highlighting overlays, as added by addOverlay
+      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
+      overwrite: false,
+      delayingBlurEvent: false,
+      focused: false,
+      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
+      pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll
+      selectingText: false,
+      draggingText: false,
+      highlight: new Delayed(), // stores highlight worker timeout
+      keySeq: null,  // Unfinished key sequence
+      specialChars: null
+    };
+
+    if (options.autofocus && !mobile) { display.input.focus(); }
+
+    // Override magic textarea content restore that IE sometimes does
+    // on our hidden textarea on reload
+    if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); }
+
+    registerEventHandlers(this);
+    ensureGlobalHandlers();
+
+    startOperation(this);
+    this.curOp.forceUpdate = true;
+    attachDoc(this, doc);
+
+    if ((options.autofocus && !mobile) || this.hasFocus())
+      { setTimeout(bind(onFocus, this), 20); }
+    else
+      { onBlur(this); }
+
+    for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
+      { optionHandlers[opt](this$1, options[opt], Init); } }
+    maybeUpdateLineNumberWidth(this);
+    if (options.finishInit) { options.finishInit(this); }
+    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1); }
+    endOperation(this);
+    // Suppress optimizelegibility in Webkit, since it breaks text
+    // measuring on line wrapping boundaries.
+    if (webkit && options.lineWrapping &&
+        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
+      { display.lineDiv.style.textRendering = "auto"; }
+  }
+
+  // The default configuration options.
+  CodeMirror.defaults = defaults;
+  // Functions to run when options are changed.
+  CodeMirror.optionHandlers = optionHandlers;
+
+  // Attach the necessary event handlers when initializing the editor
+  function registerEventHandlers(cm) {
+    var d = cm.display;
+    on(d.scroller, "mousedown", operation(cm, onMouseDown));
+    // Older IE's will not fire a second mousedown for a double click
+    if (ie && ie_version < 11)
+      { on(d.scroller, "dblclick", operation(cm, function (e) {
+        if (signalDOMEvent(cm, e)) { return }
+        var pos = posFromMouse(cm, e);
+        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }
+        e_preventDefault(e);
+        var word = cm.findWordAt(pos);
+        extendSelection(cm.doc, word.anchor, word.head);
+      })); }
+    else
+      { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); }
+    // Some browsers fire contextmenu *after* opening the menu, at
+    // which point we can't mess with it anymore. Context menu is
+    // handled in onMouseDown for these browsers.
+    on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); });
+    on(d.input.getField(), "contextmenu", function (e) {
+      if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); }
+    });
+
+    // Used to suppress mouse event handling when a touch happens
+    var touchFinished, prevTouch = {end: 0};
+    function finishTouch() {
+      if (d.activeTouch) {
+        touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000);
+        prevTouch = d.activeTouch;
+        prevTouch.end = +new Date;
+      }
+    }
+    function isMouseLikeTouchEvent(e) {
+      if (e.touches.length != 1) { return false }
+      var touch = e.touches[0];
+      return touch.radiusX <= 1 && touch.radiusY <= 1
+    }
+    function farAway(touch, other) {
+      if (other.left == null) { return true }
+      var dx = other.left - touch.left, dy = other.top - touch.top;
+      return dx * dx + dy * dy > 20 * 20
+    }
+    on(d.scroller, "touchstart", function (e) {
+      if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
+        d.input.ensurePolled();
+        clearTimeout(touchFinished);
+        var now = +new Date;
+        d.activeTouch = {start: now, moved: false,
+                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
+        if (e.touches.length == 1) {
+          d.activeTouch.left = e.touches[0].pageX;
+          d.activeTouch.top = e.touches[0].pageY;
+        }
+      }
+    });
+    on(d.scroller, "touchmove", function () {
+      if (d.activeTouch) { d.activeTouch.moved = true; }
+    });
+    on(d.scroller, "touchend", function (e) {
+      var touch = d.activeTouch;
+      if (touch && !eventInWidget(d, e) && touch.left != null &&
+          !touch.moved && new Date - touch.start < 300) {
+        var pos = cm.coordsChar(d.activeTouch, "page"), range;
+        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
+          { range = new Range(pos, pos); }
+        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
+          { range = cm.findWordAt(pos); }
+        else // Triple tap
+          { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); }
+        cm.setSelection(range.anchor, range.head);
+        cm.focus();
+        e_preventDefault(e);
+      }
+      finishTouch();
+    });
+    on(d.scroller, "touchcancel", finishTouch);
+
+    // Sync scrolling between fake scrollbars and real scrollable
+    // area, ensure viewport is updated when scrolling.
+    on(d.scroller, "scroll", function () {
+      if (d.scroller.clientHeight) {
+        updateScrollTop(cm, d.scroller.scrollTop);
+        setScrollLeft(cm, d.scroller.scrollLeft, true);
+        signal(cm, "scroll", cm);
+      }
+    });
+
+    // Listen to wheel events in order to try and update the viewport on time.
+    on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); });
+    on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); });
+
+    // Prevent wrapper from ever scrolling
+    on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
+
+    d.dragFunctions = {
+      enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }},
+      over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},
+      start: function (e) { return onDragStart(cm, e); },
+      drop: operation(cm, onDrop),
+      leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }}
+    };
+
+    var inp = d.input.getField();
+    on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); });
+    on(inp, "keydown", operation(cm, onKeyDown));
+    on(inp, "keypress", operation(cm, onKeyPress));
+    on(inp, "focus", function (e) { return onFocus(cm, e); });
+    on(inp, "blur", function (e) { return onBlur(cm, e); });
+  }
+
+  var initHooks = [];
+  CodeMirror.defineInitHook = function (f) { return initHooks.push(f); };
+
+  // Indent the given line. The how parameter can be "smart",
+  // "add"/null, "subtract", or "prev". When aggressive is false
+  // (typically set to true for forced single-line indents), empty
+  // lines are not indented, and places where the mode returns Pass
+  // are left alone.
+  function indentLine(cm, n, how, aggressive) {
+    var doc = cm.doc, state;
+    if (how == null) { how = "add"; }
+    if (how == "smart") {
+      // Fall back to "prev" when the mode doesn't have an indentation
+      // method.
+      if (!doc.mode.indent) { how = "prev"; }
+      else { state = getContextBefore(cm, n).state; }
+    }
+
+    var tabSize = cm.options.tabSize;
+    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
+    if (line.stateAfter) { line.stateAfter = null; }
+    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
+    if (!aggressive && !/\S/.test(line.text)) {
+      indentation = 0;
+      how = "not";
+    } else if (how == "smart") {
+      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+      if (indentation == Pass || indentation > 150) {
+        if (!aggressive) { return }
+        how = "prev";
+      }
+    }
+    if (how == "prev") {
+      if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); }
+      else { indentation = 0; }
+    } else if (how == "add") {
+      indentation = curSpace + cm.options.indentUnit;
+    } else if (how == "subtract") {
+      indentation = curSpace - cm.options.indentUnit;
+    } else if (typeof how == "number") {
+      indentation = curSpace + how;
+    }
+    indentation = Math.max(0, indentation);
+
+    var indentString = "", pos = 0;
+    if (cm.options.indentWithTabs)
+      { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} }
+    if (pos < indentation) { indentString += spaceStr(indentation - pos); }
+
+    if (indentString != curSpaceString) {
+      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
+      line.stateAfter = null;
+      return true
+    } else {
+      // Ensure that, if the cursor was in the whitespace at the start
+      // of the line, it is moved to the end of that space.
+      for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
+        var range = doc.sel.ranges[i$1];
+        if (range.head.line == n && range.head.ch < curSpaceString.length) {
+          var pos$1 = Pos(n, curSpaceString.length);
+          replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));
+          break
+        }
+      }
+    }
+  }
+
+  // This will be set to a {lineWise: bool, text: [string]} object, so
+  // that, when pasting, we know what kind of selections the copied
+  // text was made out of.
+  var lastCopied = null;
+
+  function setLastCopied(newLastCopied) {
+    lastCopied = newLastCopied;
+  }
+
+  function applyTextInput(cm, inserted, deleted, sel, origin) {
+    var doc = cm.doc;
+    cm.display.shift = false;
+    if (!sel) { sel = doc.sel; }
+
+    var recent = +new Date - 200;
+    var paste = origin == "paste" || cm.state.pasteIncoming > recent;
+    var textLines = splitLinesAuto(inserted), multiPaste = null;
+    // When pasting N lines into N selections, insert one line per selection
+    if (paste && sel.ranges.length > 1) {
+      if (lastCopied && lastCopied.text.join("\n") == inserted) {
+        if (sel.ranges.length % lastCopied.text.length == 0) {
+          multiPaste = [];
+          for (var i = 0; i < lastCopied.text.length; i++)
+            { multiPaste.push(doc.splitLines(lastCopied.text[i])); }
+        }
+      } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {
+        multiPaste = map(textLines, function (l) { return [l]; });
+      }
+    }
+
+    var updateInput = cm.curOp.updateInput;
+    // Normal behavior is to insert the new text into every selection
+    for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
+      var range$$1 = sel.ranges[i$1];
+      var from = range$$1.from(), to = range$$1.to();
+      if (range$$1.empty()) {
+        if (deleted && deleted > 0) // Handle deletion
+          { from = Pos(from.line, from.ch - deleted); }
+        else if (cm.state.overwrite && !paste) // Handle overwrite
+          { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); }
+        else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted)
+          { from = to = Pos(from.line, 0); }
+      }
+      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
+                         origin: origin || (paste ? "paste" : cm.state.cutIncoming > recent ? "cut" : "+input")};
+      makeChange(cm.doc, changeEvent);
+      signalLater(cm, "inputRead", cm, changeEvent);
+    }
+    if (inserted && !paste)
+      { triggerElectric(cm, inserted); }
+
+    ensureCursorVisible(cm);
+    if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; }
+    cm.curOp.typing = true;
+    cm.state.pasteIncoming = cm.state.cutIncoming = -1;
+  }
+
+  function handlePaste(e, cm) {
+    var pasted = e.clipboardData && e.clipboardData.getData("Text");
+    if (pasted) {
+      e.preventDefault();
+      if (!cm.isReadOnly() && !cm.options.disableInput)
+        { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }); }
+      return true
+    }
+  }
+
+  function triggerElectric(cm, inserted) {
+    // When an 'electric' character is inserted, immediately trigger a reindent
+    if (!cm.options.electricChars || !cm.options.smartIndent) { return }
+    var sel = cm.doc.sel;
+
+    for (var i = sel.ranges.length - 1; i >= 0; i--) {
+      var range$$1 = sel.ranges[i];
+      if (range$$1.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range$$1.head.line)) { continue }
+      var mode = cm.getModeAt(range$$1.head);
+      var indented = false;
+      if (mode.electricChars) {
+        for (var j = 0; j < mode.electricChars.length; j++)
+          { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
+            indented = indentLine(cm, range$$1.head.line, "smart");
+            break
+          } }
+      } else if (mode.electricInput) {
+        if (mode.electricInput.test(getLine(cm.doc, range$$1.head.line).text.slice(0, range$$1.head.ch)))
+          { indented = indentLine(cm, range$$1.head.line, "smart"); }
+      }
+      if (indented) { signalLater(cm, "electricInput", cm, range$$1.head.line); }
+    }
+  }
+
+  function copyableRanges(cm) {
+    var text = [], ranges = [];
+    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
+      var line = cm.doc.sel.ranges[i].head.line;
+      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
+      ranges.push(lineRange);
+      text.push(cm.getRange(lineRange.anchor, lineRange.head));
+    }
+    return {text: text, ranges: ranges}
+  }
+
+  function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) {
+    field.setAttribute("autocorrect", autocorrect ? "" : "off");
+    field.setAttribute("autocapitalize", autocapitalize ? "" : "off");
+    field.setAttribute("spellcheck", !!spellcheck);
+  }
+
+  function hiddenTextarea() {
+    var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none");
+    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
+    // The textarea is kept positioned near the cursor to prevent the
+    // fact that it'll be scrolled into view on input from scrolling
+    // our fake cursor out of view. On webkit, when wrap=off, paste is
+    // very slow. So make the area wide instead.
+    if (webkit) { te.style.width = "1000px"; }
+    else { te.setAttribute("wrap", "off"); }
+    // If border: 0; -- iOS fails to open keyboard (issue #1287)
+    if (ios) { te.style.border = "1px solid black"; }
+    disableBrowserMagic(te);
+    return div
+  }
+
+  // The publicly visible API. Note that methodOp(f) means
+  // 'wrap f in an operation, performed on its `this` parameter'.
+
+  // This is not the complete set of editor methods. Most of the
+  // methods defined on the Doc type are also injected into
+  // CodeMirror.prototype, for backwards compatibility and
+  // convenience.
+
+  function addEditorMethods(CodeMirror) {
+    var optionHandlers = CodeMirror.optionHandlers;
+
+    var helpers = CodeMirror.helpers = {};
+
+    CodeMirror.prototype = {
+      constructor: CodeMirror,
+      focus: function(){window.focus(); this.display.input.focus();},
+
+      setOption: function(option, value) {
+        var options = this.options, old = options[option];
+        if (options[option] == value && option != "mode") { return }
+        options[option] = value;
+        if (optionHandlers.hasOwnProperty(option))
+          { operation(this, optionHandlers[option])(this, value, old); }
+        signal(this, "optionChange", this, option);
+      },
+
+      getOption: function(option) {return this.options[option]},
+      getDoc: function() {return this.doc},
+
+      addKeyMap: function(map$$1, bottom) {
+        this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map$$1));
+      },
+      removeKeyMap: function(map$$1) {
+        var maps = this.state.keyMaps;
+        for (var i = 0; i < maps.length; ++i)
+          { if (maps[i] == map$$1 || maps[i].name == map$$1) {
+            maps.splice(i, 1);
+            return true
+          } }
+      },
+
+      addOverlay: methodOp(function(spec, options) {
+        var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
+        if (mode.startState) { throw new Error("Overlays may not be stateful.") }
+        insertSorted(this.state.overlays,
+                     {mode: mode, modeSpec: spec, opaque: options && options.opaque,
+                      priority: (options && options.priority) || 0},
+                     function (overlay) { return overlay.priority; });
+        this.state.modeGen++;
+        regChange(this);
+      }),
+      removeOverlay: methodOp(function(spec) {
+        var this$1 = this;
+
+        var overlays = this.state.overlays;
+        for (var i = 0; i < overlays.length; ++i) {
+          var cur = overlays[i].modeSpec;
+          if (cur == spec || typeof spec == "string" && cur.name == spec) {
+            overlays.splice(i, 1);
+            this$1.state.modeGen++;
+            regChange(this$1);
+            return
+          }
+        }
+      }),
+
+      indentLine: methodOp(function(n, dir, aggressive) {
+        if (typeof dir != "string" && typeof dir != "number") {
+          if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev"; }
+          else { dir = dir ? "add" : "subtract"; }
+        }
+        if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }
+      }),
+      indentSelection: methodOp(function(how) {
+        var this$1 = this;
+
+        var ranges = this.doc.sel.ranges, end = -1;
+        for (var i = 0; i < ranges.length; i++) {
+          var range$$1 = ranges[i];
+          if (!range$$1.empty()) {
+            var from = range$$1.from(), to = range$$1.to();
+            var start = Math.max(end, from.line);
+            end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
+            for (var j = start; j < end; ++j)
+              { indentLine(this$1, j, how); }
+            var newRanges = this$1.doc.sel.ranges;
+            if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
+              { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }
+          } else if (range$$1.head.line > end) {
+            indentLine(this$1, range$$1.head.line, how, true);
+            end = range$$1.head.line;
+            if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1); }
+          }
+        }
+      }),
+
+      // Fetch the parser token for a given character. Useful for hacks
+      // that want to inspect the mode state (say, for completion).
+      getTokenAt: function(pos, precise) {
+        return takeToken(this, pos, precise)
+      },
+
+      getLineTokens: function(line, precise) {
+        return takeToken(this, Pos(line), precise, true)
+      },
+
+      getTokenTypeAt: function(pos) {
+        pos = clipPos(this.doc, pos);
+        var styles = getLineStyles(this, getLine(this.doc, pos.line));
+        var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
+        var type;
+        if (ch == 0) { type = styles[2]; }
+        else { for (;;) {
+          var mid = (before + after) >> 1;
+          if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; }
+          else if (styles[mid * 2 + 1] < ch) { before = mid + 1; }
+          else { type = styles[mid * 2 + 2]; break }
+        } }
+        var cut = type ? type.indexOf("overlay ") : -1;
+        return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
+      },
+
+      getModeAt: function(pos) {
+        var mode = this.doc.mode;
+        if (!mode.innerMode) { return mode }
+        return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
+      },
+
+      getHelper: function(pos, type) {
+        return this.getHelpers(pos, type)[0]
+      },
+
+      getHelpers: function(pos, type) {
+        var this$1 = this;
+
+        var found = [];
+        if (!helpers.hasOwnProperty(type)) { return found }
+        var help = helpers[type], mode = this.getModeAt(pos);
+        if (typeof mode[type] == "string") {
+          if (help[mode[type]]) { found.push(help[mode[type]]); }
+        } else if (mode[type]) {
+          for (var i = 0; i < mode[type].length; i++) {
+            var val = help[mode[type][i]];
+            if (val) { found.push(val); }
+          }
+        } else if (mode.helperType && help[mode.helperType]) {
+          found.push(help[mode.helperType]);
+        } else if (help[mode.name]) {
+          found.push(help[mode.name]);
+        }
+        for (var i$1 = 0; i$1 < help._global.length; i$1++) {
+          var cur = help._global[i$1];
+          if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1)
+            { found.push(cur.val); }
+        }
+        return found
+      },
+
+      getStateAfter: function(line, precise) {
+        var doc = this.doc;
+        line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
+        return getContextBefore(this, line + 1, precise).state
+      },
+
+      cursorCoords: function(start, mode) {
+        var pos, range$$1 = this.doc.sel.primary();
+        if (start == null) { pos = range$$1.head; }
+        else if (typeof start == "object") { pos = clipPos(this.doc, start); }
+        else { pos = start ? range$$1.from() : range$$1.to(); }
+        return cursorCoords(this, pos, mode || "page")
+      },
+
+      charCoords: function(pos, mode) {
+        return charCoords(this, clipPos(this.doc, pos), mode || "page")
+      },
+
+      coordsChar: function(coords, mode) {
+        coords = fromCoordSystem(this, coords, mode || "page");
+        return coordsChar(this, coords.left, coords.top)
+      },
+
+      lineAtHeight: function(height, mode) {
+        height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
+        return lineAtHeight(this.doc, height + this.display.viewOffset)
+      },
+      heightAtLine: function(line, mode, includeWidgets) {
+        var end = false, lineObj;
+        if (typeof line == "number") {
+          var last = this.doc.first + this.doc.size - 1;
+          if (line < this.doc.first) { line = this.doc.first; }
+          else if (line > last) { line = last; end = true; }
+          lineObj = getLine(this.doc, line);
+        } else {
+          lineObj = line;
+        }
+        return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top +
+          (end ? this.doc.height - heightAtLine(lineObj) : 0)
+      },
+
+      defaultTextHeight: function() { return textHeight(this.display) },
+      defaultCharWidth: function() { return charWidth(this.display) },
+
+      getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},
+
+      addWidget: function(pos, node, scroll, vert, horiz) {
+        var display = this.display;
+        pos = cursorCoords(this, clipPos(this.doc, pos));
+        var top = pos.bottom, left = pos.left;
+        node.style.position = "absolute";
+        node.setAttribute("cm-ignore-events", "true");
+        this.display.input.setUneditable(node);
+        display.sizer.appendChild(node);
+        if (vert == "over") {
+          top = pos.top;
+        } else if (vert == "above" || vert == "near") {
+          var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
+          hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
+          // Default to positioning above (if specified and possible); otherwise default to positioning below
+          if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
+            { top = pos.top - node.offsetHeight; }
+          else if (pos.bottom + node.offsetHeight <= vspace)
+            { top = pos.bottom; }
+          if (left + node.offsetWidth > hspace)
+            { left = hspace - node.offsetWidth; }
+        }
+        node.style.top = top + "px";
+        node.style.left = node.style.right = "";
+        if (horiz == "right") {
+          left = display.sizer.clientWidth - node.offsetWidth;
+          node.style.right = "0px";
+        } else {
+          if (horiz == "left") { left = 0; }
+          else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; }
+          node.style.left = left + "px";
+        }
+        if (scroll)
+          { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); }
+      },
+
+      triggerOnKeyDown: methodOp(onKeyDown),
+      triggerOnKeyPress: methodOp(onKeyPress),
+      triggerOnKeyUp: onKeyUp,
+      triggerOnMouseDown: methodOp(onMouseDown),
+
+      execCommand: function(cmd) {
+        if (commands.hasOwnProperty(cmd))
+          { return commands[cmd].call(null, this) }
+      },
+
+      triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),
+
+      findPosH: function(from, amount, unit, visually) {
+        var this$1 = this;
+
+        var dir = 1;
+        if (amount < 0) { dir = -1; amount = -amount; }
+        var cur = clipPos(this.doc, from);
+        for (var i = 0; i < amount; ++i) {
+          cur = findPosH(this$1.doc, cur, dir, unit, visually);
+          if (cur.hitSide) { break }
+        }
+        return cur
+      },
+
+      moveH: methodOp(function(dir, unit) {
+        var this$1 = this;
+
+        this.extendSelectionsBy(function (range$$1) {
+          if (this$1.display.shift || this$1.doc.extend || range$$1.empty())
+            { return findPosH(this$1.doc, range$$1.head, dir, unit, this$1.options.rtlMoveVisually) }
+          else
+            { return dir < 0 ? range$$1.from() : range$$1.to() }
+        }, sel_move);
+      }),
+
+      deleteH: methodOp(function(dir, unit) {
+        var sel = this.doc.sel, doc = this.doc;
+        if (sel.somethingSelected())
+          { doc.replaceSelection("", null, "+delete"); }
+        else
+          { deleteNearSelection(this, function (range$$1) {
+            var other = findPosH(doc, range$$1.head, dir, unit, false);
+            return dir < 0 ? {from: other, to: range$$1.head} : {from: range$$1.head, to: other}
+          }); }
+      }),
+
+      findPosV: function(from, amount, unit, goalColumn) {
+        var this$1 = this;
+
+        var dir = 1, x = goalColumn;
+        if (amount < 0) { dir = -1; amount = -amount; }
+        var cur = clipPos(this.doc, from);
+        for (var i = 0; i < amount; ++i) {
+          var coords = cursorCoords(this$1, cur, "div");
+          if (x == null) { x = coords.left; }
+          else { coords.left = x; }
+          cur = findPosV(this$1, coords, dir, unit);
+          if (cur.hitSide) { break }
+        }
+        return cur
+      },
+
+      moveV: methodOp(function(dir, unit) {
+        var this$1 = this;
+
+        var doc = this.doc, goals = [];
+        var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();
+        doc.extendSelectionsBy(function (range$$1) {
+          if (collapse)
+            { return dir < 0 ? range$$1.from() : range$$1.to() }
+          var headPos = cursorCoords(this$1, range$$1.head, "div");
+          if (range$$1.goalColumn != null) { headPos.left = range$$1.goalColumn; }
+          goals.push(headPos.left);
+          var pos = findPosV(this$1, headPos, dir, unit);
+          if (unit == "page" && range$$1 == doc.sel.primary())
+            { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); }
+          return pos
+        }, sel_move);
+        if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)
+          { doc.sel.ranges[i].goalColumn = goals[i]; } }
+      }),
+
+      // Find the word at the given position (as returned by coordsChar).
+      findWordAt: function(pos) {
+        var doc = this.doc, line = getLine(doc, pos.line).text;
+        var start = pos.ch, end = pos.ch;
+        if (line) {
+          var helper = this.getHelper(pos, "wordChars");
+          if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end; }
+          var startChar = line.charAt(start);
+          var check = isWordChar(startChar, helper)
+            ? function (ch) { return isWordChar(ch, helper); }
+            : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); }
+            : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); };
+          while (start > 0 && check(line.charAt(start - 1))) { --start; }
+          while (end < line.length && check(line.charAt(end))) { ++end; }
+        }
+        return new Range(Pos(pos.line, start), Pos(pos.line, end))
+      },
+
+      toggleOverwrite: function(value) {
+        if (value != null && value == this.state.overwrite) { return }
+        if (this.state.overwrite = !this.state.overwrite)
+          { addClass(this.display.cursorDiv, "CodeMirror-overwrite"); }
+        else
+          { rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); }
+
+        signal(this, "overwriteToggle", this, this.state.overwrite);
+      },
+      hasFocus: function() { return this.display.input.getField() == activeElt() },
+      isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },
+
+      scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }),
+      getScrollInfo: function() {
+        var scroller = this.display.scroller;
+        return {left: scroller.scrollLeft, top: scroller.scrollTop,
+                height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
+                width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
+                clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
+      },
+
+      scrollIntoView: methodOp(function(range$$1, margin) {
+        if (range$$1 == null) {
+          range$$1 = {from: this.doc.sel.primary().head, to: null};
+          if (margin == null) { margin = this.options.cursorScrollMargin; }
+        } else if (typeof range$$1 == "number") {
+          range$$1 = {from: Pos(range$$1, 0), to: null};
+        } else if (range$$1.from == null) {
+          range$$1 = {from: range$$1, to: null};
+        }
+        if (!range$$1.to) { range$$1.to = range$$1.from; }
+        range$$1.margin = margin || 0;
+
+        if (range$$1.from.line != null) {
+          scrollToRange(this, range$$1);
+        } else {
+          scrollToCoordsRange(this, range$$1.from, range$$1.to, range$$1.margin);
+        }
+      }),
+
+      setSize: methodOp(function(width, height) {
+        var this$1 = this;
+
+        var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; };
+        if (width != null) { this.display.wrapper.style.width = interpret(width); }
+        if (height != null) { this.display.wrapper.style.height = interpret(height); }
+        if (this.options.lineWrapping) { clearLineMeasurementCache(this); }
+        var lineNo$$1 = this.display.viewFrom;
+        this.doc.iter(lineNo$$1, this.display.viewTo, function (line) {
+          if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)
+            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo$$1, "widget"); break } } }
+          ++lineNo$$1;
+        });
+        this.curOp.forceUpdate = true;
+        signal(this, "refresh", this);
+      }),
+
+      operation: function(f){return runInOp(this, f)},
+      startOperation: function(){return startOperation(this)},
+      endOperation: function(){return endOperation(this)},
+
+      refresh: methodOp(function() {
+        var oldHeight = this.display.cachedTextHeight;
+        regChange(this);
+        this.curOp.forceUpdate = true;
+        clearCaches(this);
+        scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);
+        updateGutterSpace(this.display);
+        if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping)
+          { estimateLineHeights(this); }
+        signal(this, "refresh", this);
+      }),
+
+      swapDoc: methodOp(function(doc) {
+        var old = this.doc;
+        old.cm = null;
+        // Cancel the current text selection if any (#5821)
+        if (this.state.selectingText) { this.state.selectingText(); }
+        attachDoc(this, doc);
+        clearCaches(this);
+        this.display.input.reset();
+        scrollToCoords(this, doc.scrollLeft, doc.scrollTop);
+        this.curOp.forceScroll = true;
+        signalLater(this, "swapDoc", this, old);
+        return old
+      }),
+
+      phrase: function(phraseText) {
+        var phrases = this.options.phrases;
+        return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText
+      },
+
+      getInputField: function(){return this.display.input.getField()},
+      getWrapperElement: function(){return this.display.wrapper},
+      getScrollerElement: function(){return this.display.scroller},
+      getGutterElement: function(){return this.display.gutters}
+    };
+    eventMixin(CodeMirror);
+
+    CodeMirror.registerHelper = function(type, name, value) {
+      if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; }
+      helpers[type][name] = value;
+    };
+    CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
+      CodeMirror.registerHelper(type, name, value);
+      helpers[type]._global.push({pred: predicate, val: value});
+    };
+  }
+
+  // Used for horizontal relative motion. Dir is -1 or 1 (left or
+  // right), unit can be "char", "column" (like char, but doesn't
+  // cross line boundaries), "word" (across next word), or "group" (to
+  // the start of next group of word or non-word-non-whitespace
+  // chars). The visually param controls whether, in right-to-left
+  // text, direction 1 means to move towards the next index in the
+  // string, or towards the character to the right of the current
+  // position. The resulting position will have a hitSide=true
+  // property if it reached the end of the document.
+  function findPosH(doc, pos, dir, unit, visually) {
+    var oldPos = pos;
+    var origDir = dir;
+    var lineObj = getLine(doc, pos.line);
+    var lineDir = visually && doc.direction == "rtl" ? -dir : dir;
+    function findNextLine() {
+      var l = pos.line + lineDir;
+      if (l < doc.first || l >= doc.first + doc.size) { return false }
+      pos = new Pos(l, pos.ch, pos.sticky);
+      return lineObj = getLine(doc, l)
+    }
+    function moveOnce(boundToLine) {
+      var next;
+      if (visually) {
+        next = moveVisually(doc.cm, lineObj, pos, dir);
+      } else {
+        next = moveLogically(lineObj, pos, dir);
+      }
+      if (next == null) {
+        if (!boundToLine && findNextLine())
+          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); }
+        else
+          { return false }
+      } else {
+        pos = next;
+      }
+      return true
+    }
+
+    if (unit == "char") {
+      moveOnce();
+    } else if (unit == "column") {
+      moveOnce(true);
+    } else if (unit == "word" || unit == "group") {
+      var sawType = null, group = unit == "group";
+      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
+      for (var first = true;; first = false) {
+        if (dir < 0 && !moveOnce(!first)) { break }
+        var cur = lineObj.text.charAt(pos.ch) || "\n";
+        var type = isWordChar(cur, helper) ? "w"
+          : group && cur == "\n" ? "n"
+          : !group || /\s/.test(cur) ? null
+          : "p";
+        if (group && !first && !type) { type = "s"; }
+        if (sawType && sawType != type) {
+          if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after";}
+          break
+        }
+
+        if (type) { sawType = type; }
+        if (dir > 0 && !moveOnce(!first)) { break }
+      }
+    }
+    var result = skipAtomic(doc, pos, oldPos, origDir, true);
+    if (equalCursorPos(oldPos, result)) { result.hitSide = true; }
+    return result
+  }
+
+  // For relative vertical movement. Dir may be -1 or 1. Unit can be
+  // "page" or "line". The resulting position will have a hitSide=true
+  // property if it reached the end of the document.
+  function findPosV(cm, pos, dir, unit) {
+    var doc = cm.doc, x = pos.left, y;
+    if (unit == "page") {
+      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+      var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);
+      y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;
+
+    } else if (unit == "line") {
+      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
+    }
+    var target;
+    for (;;) {
+      target = coordsChar(cm, x, y);
+      if (!target.outside) { break }
+      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }
+      y += dir * 5;
+    }
+    return target
+  }
+
+  // CONTENTEDITABLE INPUT STYLE
+
+  var ContentEditableInput = function(cm) {
+    this.cm = cm;
+    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
+    this.polling = new Delayed();
+    this.composing = null;
+    this.gracePeriod = false;
+    this.readDOMTimeout = null;
+  };
+
+  ContentEditableInput.prototype.init = function (display) {
+      var this$1 = this;
+
+    var input = this, cm = input.cm;
+    var div = input.div = display.lineDiv;
+    disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize);
+
+    on(div, "paste", function (e) {
+      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
+      // IE doesn't fire input events, so we schedule a read for the pasted content in this way
+      if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); }
+    });
+
+    on(div, "compositionstart", function (e) {
+      this$1.composing = {data: e.data, done: false};
+    });
+    on(div, "compositionupdate", function (e) {
+      if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; }
+    });
+    on(div, "compositionend", function (e) {
+      if (this$1.composing) {
+        if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); }
+        this$1.composing.done = true;
+      }
+    });
+
+    on(div, "touchstart", function () { return input.forceCompositionEnd(); });
+
+    on(div, "input", function () {
+      if (!this$1.composing) { this$1.readFromDOMSoon(); }
+    });
+
+    function onCopyCut(e) {
+      if (signalDOMEvent(cm, e)) { return }
+      if (cm.somethingSelected()) {
+        setLastCopied({lineWise: false, text: cm.getSelections()});
+        if (e.type == "cut") { cm.replaceSelection("", null, "cut"); }
+      } else if (!cm.options.lineWiseCopyCut) {
+        return
+      } else {
+        var ranges = copyableRanges(cm);
+        setLastCopied({lineWise: true, text: ranges.text});
+        if (e.type == "cut") {
+          cm.operation(function () {
+            cm.setSelections(ranges.ranges, 0, sel_dontScroll);
+            cm.replaceSelection("", null, "cut");
+          });
+        }
+      }
+      if (e.clipboardData) {
+        e.clipboardData.clearData();
+        var content = lastCopied.text.join("\n");
+        // iOS exposes the clipboard API, but seems to discard content inserted into it
+        e.clipboardData.setData("Text", content);
+        if (e.clipboardData.getData("Text") == content) {
+          e.preventDefault();
+          return
+        }
+      }
+      // Old-fashioned briefly-focus-a-textarea hack
+      var kludge = hiddenTextarea(), te = kludge.firstChild;
+      cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
+      te.value = lastCopied.text.join("\n");
+      var hadFocus = document.activeElement;
+      selectInput(te);
+      setTimeout(function () {
+        cm.display.lineSpace.removeChild(kludge);
+        hadFocus.focus();
+        if (hadFocus == div) { input.showPrimarySelection(); }
+      }, 50);
+    }
+    on(div, "copy", onCopyCut);
+    on(div, "cut", onCopyCut);
+  };
+
+  ContentEditableInput.prototype.screenReaderLabelChanged = function (label) {
+    // Label for screenreaders, accessibility
+    if(label) {
+      this.div.setAttribute('aria-label', label);
+    } else {
+      this.div.removeAttribute('aria-label');
+    }
+  };
+
+  ContentEditableInput.prototype.prepareSelection = function () {
+    var result = prepareSelection(this.cm, false);
+    result.focus = document.activeElement == this.div;
+    return result
+  };
+
+  ContentEditableInput.prototype.showSelection = function (info, takeFocus) {
+    if (!info || !this.cm.display.view.length) { return }
+    if (info.focus || takeFocus) { this.showPrimarySelection(); }
+    this.showMultipleSelections(info);
+  };
+
+  ContentEditableInput.prototype.getSelection = function () {
+    return this.cm.display.wrapper.ownerDocument.getSelection()
+  };
+
+  ContentEditableInput.prototype.showPrimarySelection = function () {
+    var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary();
+    var from = prim.from(), to = prim.to();
+
+    if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {
+      sel.removeAllRanges();
+      return
+    }
+
+    var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
+    var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);
+    if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
+        cmp(minPos(curAnchor, curFocus), from) == 0 &&
+        cmp(maxPos(curAnchor, curFocus), to) == 0)
+      { return }
+
+    var view = cm.display.view;
+    var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||
+        {node: view[0].measure.map[2], offset: 0};
+    var end = to.line < cm.display.viewTo && posToDOM(cm, to);
+    if (!end) {
+      var measure = view[view.length - 1].measure;
+      var map$$1 = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
+      end = {node: map$$1[map$$1.length - 1], offset: map$$1[map$$1.length - 2] - map$$1[map$$1.length - 3]};
+    }
+
+    if (!start || !end) {
+      sel.removeAllRanges();
+      return
+    }
+
+    var old = sel.rangeCount && sel.getRangeAt(0), rng;
+    try { rng = range(start.node, start.offset, end.offset, end.node); }
+    catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
+    if (rng) {
+      if (!gecko && cm.state.focused) {
+        sel.collapse(start.node, start.offset);
+        if (!rng.collapsed) {
+          sel.removeAllRanges();
+          sel.addRange(rng);
+        }
+      } else {
+        sel.removeAllRanges();
+        sel.addRange(rng);
+      }
+      if (old && sel.anchorNode == null) { sel.addRange(old); }
+      else if (gecko) { this.startGracePeriod(); }
+    }
+    this.rememberSelection();
+  };
+
+  ContentEditableInput.prototype.startGracePeriod = function () {
+      var this$1 = this;
+
+    clearTimeout(this.gracePeriod);
+    this.gracePeriod = setTimeout(function () {
+      this$1.gracePeriod = false;
+      if (this$1.selectionChanged())
+        { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); }
+    }, 20);
+  };
+
+  ContentEditableInput.prototype.showMultipleSelections = function (info) {
+    removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
+    removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
+  };
+
+  ContentEditableInput.prototype.rememberSelection = function () {
+    var sel = this.getSelection();
+    this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
+    this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
+  };
+
+  ContentEditableInput.prototype.selectionInEditor = function () {
+    var sel = this.getSelection();
+    if (!sel.rangeCount) { return false }
+    var node = sel.getRangeAt(0).commonAncestorContainer;
+    return contains(this.div, node)
+  };
+
+  ContentEditableInput.prototype.focus = function () {
+    if (this.cm.options.readOnly != "nocursor") {
+      if (!this.selectionInEditor() || document.activeElement != this.div)
+        { this.showSelection(this.prepareSelection(), true); }
+      this.div.focus();
+    }
+  };
+  ContentEditableInput.prototype.blur = function () { this.div.blur(); };
+  ContentEditableInput.prototype.getField = function () { return this.div };
+
+  ContentEditableInput.prototype.supportsTouch = function () { return true };
+
+  ContentEditableInput.prototype.receivedFocus = function () {
+    var input = this;
+    if (this.selectionInEditor())
+      { this.pollSelection(); }
+    else
+      { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); }
+
+    function poll() {
+      if (input.cm.state.focused) {
+        input.pollSelection();
+        input.polling.set(input.cm.options.pollInterval, poll);
+      }
+    }
+    this.polling.set(this.cm.options.pollInterval, poll);
+  };
+
+  ContentEditableInput.prototype.selectionChanged = function () {
+    var sel = this.getSelection();
+    return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
+      sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
+  };
+
+  ContentEditableInput.prototype.pollSelection = function () {
+    if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }
+    var sel = this.getSelection(), cm = this.cm;
+    // On Android Chrome (version 56, at least), backspacing into an
+    // uneditable block element will put the cursor in that element,
+    // and then, because it's not editable, hide the virtual keyboard.
+    // Because Android doesn't allow us to actually detect backspace
+    // presses in a sane way, this code checks for when that happens
+    // and simulates a backspace press in this case.
+    if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) {
+      this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs});
+      this.blur();
+      this.focus();
+      return
+    }
+    if (this.composing) { return }
+    this.rememberSelection();
+    var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
+    var head = domToPos(cm, sel.focusNode, sel.focusOffset);
+    if (anchor && head) { runInOp(cm, function () {
+      setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
+      if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; }
+    }); }
+  };
+
+  ContentEditableInput.prototype.pollContent = function () {
+    if (this.readDOMTimeout != null) {
+      clearTimeout(this.readDOMTimeout);
+      this.readDOMTimeout = null;
+    }
+
+    var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
+    var from = sel.from(), to = sel.to();
+    if (from.ch == 0 && from.line > cm.firstLine())
+      { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); }
+    if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())
+      { to = Pos(to.line + 1, 0); }
+    if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }
+
+    var fromIndex, fromLine, fromNode;
+    if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
+      fromLine = lineNo(display.view[0].line);
+      fromNode = display.view[0].node;
+    } else {
+      fromLine = lineNo(display.view[fromIndex].line);
+      fromNode = display.view[fromIndex - 1].node.nextSibling;
+    }
+    var toIndex = findViewIndex(cm, to.line);
+    var toLine, toNode;
+    if (toIndex == display.view.length - 1) {
+      toLine = display.viewTo - 1;
+      toNode = display.lineDiv.lastChild;
+    } else {
+      toLine = lineNo(display.view[toIndex + 1].line) - 1;
+      toNode = display.view[toIndex + 1].node.previousSibling;
+    }
+
+    if (!fromNode) { return false }
+    var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
+    var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
+    while (newText.length > 1 && oldText.length > 1) {
+      if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
+      else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
+      else { break }
+    }
+
+    var cutFront = 0, cutEnd = 0;
+    var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
+    while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
+      { ++cutFront; }
+    var newBot = lst(newText), oldBot = lst(oldText);
+    var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
+                             oldBot.length - (oldText.length == 1 ? cutFront : 0));
+    while (cutEnd < maxCutEnd &&
+           newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
+      { ++cutEnd; }
+    // Try to move start of change to start of selection if ambiguous
+    if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {
+      while (cutFront && cutFront > from.ch &&
+             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
+        cutFront--;
+        cutEnd++;
+      }
+    }
+
+    newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "");
+    newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "");
+
+    var chFrom = Pos(fromLine, cutFront);
+    var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
+    if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
+      replaceRange(cm.doc, newText, chFrom, chTo, "+input");
+      return true
+    }
+  };
+
+  ContentEditableInput.prototype.ensurePolled = function () {
+    this.forceCompositionEnd();
+  };
+  ContentEditableInput.prototype.reset = function () {
+    this.forceCompositionEnd();
+  };
+  ContentEditableInput.prototype.forceCompositionEnd = function () {
+    if (!this.composing) { return }
+    clearTimeout(this.readDOMTimeout);
+    this.composing = null;
+    this.updateFromDOM();
+    this.div.blur();
+    this.div.focus();
+  };
+  ContentEditableInput.prototype.readFromDOMSoon = function () {
+      var this$1 = this;
+
+    if (this.readDOMTimeout != null) { return }
+    this.readDOMTimeout = setTimeout(function () {
+      this$1.readDOMTimeout = null;
+      if (this$1.composing) {
+        if (this$1.composing.done) { this$1.composing = null; }
+        else { return }
+      }
+      this$1.updateFromDOM();
+    }, 80);
+  };
+
+  ContentEditableInput.prototype.updateFromDOM = function () {
+      var this$1 = this;
+
+    if (this.cm.isReadOnly() || !this.pollContent())
+      { runInOp(this.cm, function () { return regChange(this$1.cm); }); }
+  };
+
+  ContentEditableInput.prototype.setUneditable = function (node) {
+    node.contentEditable = "false";
+  };
+
+  ContentEditableInput.prototype.onKeyPress = function (e) {
+    if (e.charCode == 0 || this.composing) { return }
+    e.preventDefault();
+    if (!this.cm.isReadOnly())
+      { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); }
+  };
+
+  ContentEditableInput.prototype.readOnlyChanged = function (val) {
+    this.div.contentEditable = String(val != "nocursor");
+  };
+
+  ContentEditableInput.prototype.onContextMenu = function () {};
+  ContentEditableInput.prototype.resetPosition = function () {};
+
+  ContentEditableInput.prototype.needsContentAttribute = true;
+
+  function posToDOM(cm, pos) {
+    var view = findViewForLine(cm, pos.line);
+    if (!view || view.hidden) { return null }
+    var line = getLine(cm.doc, pos.line);
+    var info = mapFromLineView(view, line, pos.line);
+
+    var order = getOrder(line, cm.doc.direction), side = "left";
+    if (order) {
+      var partPos = getBidiPartAt(order, pos.ch);
+      side = partPos % 2 ? "right" : "left";
+    }
+    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
+    result.offset = result.collapse == "right" ? result.end : result.start;
+    return result
+  }
+
+  function isInGutter(node) {
+    for (var scan = node; scan; scan = scan.parentNode)
+      { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }
+    return false
+  }
+
+  function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }
+
+  function domTextBetween(cm, from, to, fromLine, toLine) {
+    var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false;
+    function recognizeMarker(id) { return function (marker) { return marker.id == id; } }
+    function close() {
+      if (closing) {
+        text += lineSep;
+        if (extraLinebreak) { text += lineSep; }
+        closing = extraLinebreak = false;
+      }
+    }
+    function addText(str) {
+      if (str) {
+        close();
+        text += str;
+      }
+    }
+    function walk(node) {
+      if (node.nodeType == 1) {
+        var cmText = node.getAttribute("cm-text");
+        if (cmText) {
+          addText(cmText);
+          return
+        }
+        var markerID = node.getAttribute("cm-marker"), range$$1;
+        if (markerID) {
+          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
+          if (found.length && (range$$1 = found[0].find(0)))
+            { addText(getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep)); }
+          return
+        }
+        if (node.getAttribute("contenteditable") == "false") { return }
+        var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);
+        if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return }
+
+        if (isBlock) { close(); }
+        for (var i = 0; i < node.childNodes.length; i++)
+          { walk(node.childNodes[i]); }
+
+        if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; }
+        if (isBlock) { closing = true; }
+      } else if (node.nodeType == 3) {
+        addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "));
+      }
+    }
+    for (;;) {
+      walk(from);
+      if (from == to) { break }
+      from = from.nextSibling;
+      extraLinebreak = false;
+    }
+    return text
+  }
+
+  function domToPos(cm, node, offset) {
+    var lineNode;
+    if (node == cm.display.lineDiv) {
+      lineNode = cm.display.lineDiv.childNodes[offset];
+      if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }
+      node = null; offset = 0;
+    } else {
+      for (lineNode = node;; lineNode = lineNode.parentNode) {
+        if (!lineNode || lineNode == cm.display.lineDiv) { return null }
+        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }
+      }
+    }
+    for (var i = 0; i < cm.display.view.length; i++) {
+      var lineView = cm.display.view[i];
+      if (lineView.node == lineNode)
+        { return locateNodeInLineView(lineView, node, offset) }
+    }
+  }
+
+  function locateNodeInLineView(lineView, node, offset) {
+    var wrapper = lineView.text.firstChild, bad = false;
+    if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }
+    if (node == wrapper) {
+      bad = true;
+      node = wrapper.childNodes[offset];
+      offset = 0;
+      if (!node) {
+        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
+        return badPos(Pos(lineNo(line), line.text.length), bad)
+      }
+    }
+
+    var textNode = node.nodeType == 3 ? node : null, topNode = node;
+    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
+      textNode = node.firstChild;
+      if (offset) { offset = textNode.nodeValue.length; }
+    }
+    while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; }
+    var measure = lineView.measure, maps = measure.maps;
+
+    function find(textNode, topNode, offset) {
+      for (var i = -1; i < (maps ? maps.length : 0); i++) {
+        var map$$1 = i < 0 ? measure.map : maps[i];
+        for (var j = 0; j < map$$1.length; j += 3) {
+          var curNode = map$$1[j + 2];
+          if (curNode == textNode || curNode == topNode) {
+            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
+            var ch = map$$1[j] + offset;
+            if (offset < 0 || curNode != textNode) { ch = map$$1[j + (offset ? 1 : 0)]; }
+            return Pos(line, ch)
+          }
+        }
+      }
+    }
+    var found = find(textNode, topNode, offset);
+    if (found) { return badPos(found, bad) }
+
+    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
+    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
+      found = find(after, after.firstChild, 0);
+      if (found)
+        { return badPos(Pos(found.line, found.ch - dist), bad) }
+      else
+        { dist += after.textContent.length; }
+    }
+    for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {
+      found = find(before, before.firstChild, -1);
+      if (found)
+        { return badPos(Pos(found.line, found.ch + dist$1), bad) }
+      else
+        { dist$1 += before.textContent.length; }
+    }
+  }
+
+  // TEXTAREA INPUT STYLE
+
+  var TextareaInput = function(cm) {
+    this.cm = cm;
+    // See input.poll and input.reset
+    this.prevInput = "";
+
+    // Flag that indicates whether we expect input to appear real soon
+    // now (after some event like 'keypress' or 'input') and are
+    // polling intensively.
+    this.pollingFast = false;
+    // Self-resetting timeout for the poller
+    this.polling = new Delayed();
+    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
+    this.hasSelection = false;
+    this.composing = null;
+  };
+
+  TextareaInput.prototype.init = function (display) {
+      var this$1 = this;
+
+    var input = this, cm = this.cm;
+    this.createField(display);
+    var te = this.textarea;
+
+    display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);
+
+    // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
+    if (ios) { te.style.width = "0px"; }
+
+    on(te, "input", function () {
+      if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; }
+      input.poll();
+    });
+
+    on(te, "paste", function (e) {
+      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
+
+      cm.state.pasteIncoming = +new Date;
+      input.fastPoll();
+    });
+
+    function prepareCopyCut(e) {
+      if (signalDOMEvent(cm, e)) { return }
+      if (cm.somethingSelected()) {
+        setLastCopied({lineWise: false, text: cm.getSelections()});
+      } else if (!cm.options.lineWiseCopyCut) {
+        return
+      } else {
+        var ranges = copyableRanges(cm);
+        setLastCopied({lineWise: true, text: ranges.text});
+        if (e.type == "cut") {
+          cm.setSelections(ranges.ranges, null, sel_dontScroll);
+        } else {
+          input.prevInput = "";
+          te.value = ranges.text.join("\n");
+          selectInput(te);
+        }
+      }
+      if (e.type == "cut") { cm.state.cutIncoming = +new Date; }
+    }
+    on(te, "cut", prepareCopyCut);
+    on(te, "copy", prepareCopyCut);
+
+    on(display.scroller, "paste", function (e) {
+      if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }
+      if (!te.dispatchEvent) {
+        cm.state.pasteIncoming = +new Date;
+        input.focus();
+        return
+      }
+
+      // Pass the `paste` event to the textarea so it's handled by its event listener.
+      var event = new Event("paste");
+      event.clipboardData = e.clipboardData;
+      te.dispatchEvent(event);
+    });
+
+    // Prevent normal selection in the editor (we handle our own)
+    on(display.lineSpace, "selectstart", function (e) {
+      if (!eventInWidget(display, e)) { e_preventDefault(e); }
+    });
+
+    on(te, "compositionstart", function () {
+      var start = cm.getCursor("from");
+      if (input.composing) { input.composing.range.clear(); }
+      input.composing = {
+        start: start,
+        range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
+      };
+    });
+    on(te, "compositionend", function () {
+      if (input.composing) {
+        input.poll();
+        input.composing.range.clear();
+        input.composing = null;
+      }
+    });
+  };
+
+  TextareaInput.prototype.createField = function (_display) {
+    // Wraps and hides input textarea
+    this.wrapper = hiddenTextarea();
+    // The semihidden textarea that is focused when the editor is
+    // focused, and receives input.
+    this.textarea = this.wrapper.firstChild;
+  };
+
+  TextareaInput.prototype.screenReaderLabelChanged = function (label) {
+    // Label for screenreaders, accessibility
+    if(label) {
+      this.textarea.setAttribute('aria-label', label);
+    } else {
+      this.textarea.removeAttribute('aria-label');
+    }
+  };
+
+  TextareaInput.prototype.prepareSelection = function () {
+    // Redraw the selection and/or cursor
+    var cm = this.cm, display = cm.display, doc = cm.doc;
+    var result = prepareSelection(cm);
+
+    // Move the hidden textarea near the cursor to prevent scrolling artifacts
+    if (cm.options.moveInputWithCursor) {
+      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
+      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
+      result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
+                                          headPos.top + lineOff.top - wrapOff.top));
+      result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
+                                           headPos.left + lineOff.left - wrapOff.left));
+    }
+
+    return result
+  };
+
+  TextareaInput.prototype.showSelection = function (drawn) {
+    var cm = this.cm, display = cm.display;
+    removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
+    removeChildrenAndAdd(display.selectionDiv, drawn.selection);
+    if (drawn.teTop != null) {
+      this.wrapper.style.top = drawn.teTop + "px";
+      this.wrapper.style.left = drawn.teLeft + "px";
+    }
+  };
+
+  // Reset the input to correspond to the selection (or to be empty,
+  // when not typing and nothing is selected)
+  TextareaInput.prototype.reset = function (typing) {
+    if (this.contextMenuPending || this.composing) { return }
+    var cm = this.cm;
+    if (cm.somethingSelected()) {
+      this.prevInput = "";
+      var content = cm.getSelection();
+      this.textarea.value = content;
+      if (cm.state.focused) { selectInput(this.textarea); }
+      if (ie && ie_version >= 9) { this.hasSelection = content; }
+    } else if (!typing) {
+      this.prevInput = this.textarea.value = "";
+      if (ie && ie_version >= 9) { this.hasSelection = null; }
+    }
+  };
+
+  TextareaInput.prototype.getField = function () { return this.textarea };
+
+  TextareaInput.prototype.supportsTouch = function () { return false };
+
+  TextareaInput.prototype.focus = function () {
+    if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
+      try { this.textarea.focus(); }
+      catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
+    }
+  };
+
+  TextareaInput.prototype.blur = function () { this.textarea.blur(); };
+
+  TextareaInput.prototype.resetPosition = function () {
+    this.wrapper.style.top = this.wrapper.style.left = 0;
+  };
+
+  TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); };
+
+  // Poll for input changes, using the normal rate of polling. This
+  // runs as long as the editor is focused.
+  TextareaInput.prototype.slowPoll = function () {
+      var this$1 = this;
+
+    if (this.pollingFast) { return }
+    this.polling.set(this.cm.options.pollInterval, function () {
+      this$1.poll();
+      if (this$1.cm.state.focused) { this$1.slowPoll(); }
+    });
+  };
+
+  // When an event has just come in that is likely to add or change
+  // something in the input textarea, we poll faster, to ensure that
+  // the change appears on the screen quickly.
+  TextareaInput.prototype.fastPoll = function () {
+    var missed = false, input = this;
+    input.pollingFast = true;
+    function p() {
+      var changed = input.poll();
+      if (!changed && !missed) {missed = true; input.polling.set(60, p);}
+      else {input.pollingFast = false; input.slowPoll();}
+    }
+    input.polling.set(20, p);
+  };
+
+  // Read input from the textarea, and update the document to match.
+  // When something is selected, it is present in the textarea, and
+  // selected (unless it is huge, in which case a placeholder is
+  // used). When nothing is selected, the cursor sits after previously
+  // seen text (can be empty), which is stored in prevInput (we must
+  // not reset the textarea when typing, because that breaks IME).
+  TextareaInput.prototype.poll = function () {
+      var this$1 = this;
+
+    var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
+    // Since this is called a *lot*, try to bail out as cheaply as
+    // possible when it is clear that nothing happened. hasSelection
+    // will be the case when there is a lot of text in the textarea,
+    // in which case reading its value would be expensive.
+    if (this.contextMenuPending || !cm.state.focused ||
+        (hasSelection(input) && !prevInput && !this.composing) ||
+        cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)
+      { return false }
+
+    var text = input.value;
+    // If nothing changed, bail.
+    if (text == prevInput && !cm.somethingSelected()) { return false }
+    // Work around nonsensical selection resetting in IE9/10, and
+    // inexplicable appearance of private area unicode characters on
+    // some key combos in Mac (#2689).
+    if (ie && ie_version >= 9 && this.hasSelection === text ||
+        mac && /[\uf700-\uf7ff]/.test(text)) {
+      cm.display.input.reset();
+      return false
+    }
+
+    if (cm.doc.sel == cm.display.selForContextMenu) {
+      var first = text.charCodeAt(0);
+      if (first == 0x200b && !prevInput) { prevInput = "\u200b"; }
+      if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") }
+    }
+    // Find the part of the input that is actually new
+    var same = 0, l = Math.min(prevInput.length, text.length);
+    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; }
+
+    runInOp(cm, function () {
+      applyTextInput(cm, text.slice(same), prevInput.length - same,
+                     null, this$1.composing ? "*compose" : null);
+
+      // Don't leave long text in the textarea, since it makes further polling slow
+      if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = ""; }
+      else { this$1.prevInput = text; }
+
+      if (this$1.composing) {
+        this$1.composing.range.clear();
+        this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"),
+                                           {className: "CodeMirror-composing"});
+      }
+    });
+    return true
+  };
+
+  TextareaInput.prototype.ensurePolled = function () {
+    if (this.pollingFast && this.poll()) { this.pollingFast = false; }
+  };
+
+  TextareaInput.prototype.onKeyPress = function () {
+    if (ie && ie_version >= 9) { this.hasSelection = null; }
+    this.fastPoll();
+  };
+
+  TextareaInput.prototype.onContextMenu = function (e) {
+    var input = this, cm = input.cm, display = cm.display, te = input.textarea;
+    if (input.contextMenuPending) { input.contextMenuPending(); }
+    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
+    if (!pos || presto) { return } // Opera is difficult.
+
+    // Reset the current text selection only if the click is done outside of the selection
+    // and 'resetSelectionOnContextMenu' option is true.
+    var reset = cm.options.resetSelectionOnContextMenu;
+    if (reset && cm.doc.sel.contains(pos) == -1)
+      { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); }
+
+    var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText;
+    var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();
+    input.wrapper.style.cssText = "position: static";
+    te.style.cssText = "position: absolute; width: 30px; height: 30px;\n      top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n      z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
+    var oldScrollY;
+    if (webkit) { oldScrollY = window.scrollY; } // Work around Chrome issue (#2712)
+    display.input.focus();
+    if (webkit) { window.scrollTo(null, oldScrollY); }
+    display.input.reset();
+    // Adds "Select all" to context menu in FF
+    if (!cm.somethingSelected()) { te.value = input.prevInput = " "; }
+    input.contextMenuPending = rehide;
+    display.selForContextMenu = cm.doc.sel;
+    clearTimeout(display.detectingSelectAll);
+
+    // Select-all will be greyed out if there's nothing to select, so
+    // this adds a zero-width space so that we can later check whether
+    // it got selected.
+    function prepareSelectAllHack() {
+      if (te.selectionStart != null) {
+        var selected = cm.somethingSelected();
+        var extval = "\u200b" + (selected ? te.value : "");
+        te.value = "\u21da"; // Used to catch context-menu undo
+        te.value = extval;
+        input.prevInput = selected ? "" : "\u200b";
+        te.selectionStart = 1; te.selectionEnd = extval.length;
+        // Re-set this, in case some other handler touched the
+        // selection in the meantime.
+        display.selForContextMenu = cm.doc.sel;
+      }
+    }
+    function rehide() {
+      if (input.contextMenuPending != rehide) { return }
+      input.contextMenuPending = false;
+      input.wrapper.style.cssText = oldWrapperCSS;
+      te.style.cssText = oldCSS;
+      if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); }
+
+      // Try to detect the user choosing select-all
+      if (te.selectionStart != null) {
+        if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); }
+        var i = 0, poll = function () {
+          if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
+              te.selectionEnd > 0 && input.prevInput == "\u200b") {
+            operation(cm, selectAll)(cm);
+          } else if (i++ < 10) {
+            display.detectingSelectAll = setTimeout(poll, 500);
+          } else {
+            display.selForContextMenu = null;
+            display.input.reset();
+          }
+        };
+        display.detectingSelectAll = setTimeout(poll, 200);
+      }
+    }
+
+    if (ie && ie_version >= 9) { prepareSelectAllHack(); }
+    if (captureRightClick) {
+      e_stop(e);
+      var mouseup = function () {
+        off(window, "mouseup", mouseup);
+        setTimeout(rehide, 20);
+      };
+      on(window, "mouseup", mouseup);
+    } else {
+      setTimeout(rehide, 50);
+    }
+  };
+
+  TextareaInput.prototype.readOnlyChanged = function (val) {
+    if (!val) { this.reset(); }
+    this.textarea.disabled = val == "nocursor";
+  };
+
+  TextareaInput.prototype.setUneditable = function () {};
+
+  TextareaInput.prototype.needsContentAttribute = false;
+
+  function fromTextArea(textarea, options) {
+    options = options ? copyObj(options) : {};
+    options.value = textarea.value;
+    if (!options.tabindex && textarea.tabIndex)
+      { options.tabindex = textarea.tabIndex; }
+    if (!options.placeholder && textarea.placeholder)
+      { options.placeholder = textarea.placeholder; }
+    // Set autofocus to true if this textarea is focused, or if it has
+    // autofocus and no other element is focused.
+    if (options.autofocus == null) {
+      var hasFocus = activeElt();
+      options.autofocus = hasFocus == textarea ||
+        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
+    }
+
+    function save() {textarea.value = cm.getValue();}
+
+    var realSubmit;
+    if (textarea.form) {
+      on(textarea.form, "submit", save);
+      // Deplorable hack to make the submit method do the right thing.
+      if (!options.leaveSubmitMethodAlone) {
+        var form = textarea.form;
+        realSubmit = form.submit;
+        try {
+          var wrappedSubmit = form.submit = function () {
+            save();
+            form.submit = realSubmit;
+            form.submit();
+            form.submit = wrappedSubmit;
+          };
+        } catch(e) {}
+      }
+    }
+
+    options.finishInit = function (cm) {
+      cm.save = save;
+      cm.getTextArea = function () { return textarea; };
+      cm.toTextArea = function () {
+        cm.toTextArea = isNaN; // Prevent this from being ran twice
+        save();
+        textarea.parentNode.removeChild(cm.getWrapperElement());
+        textarea.style.display = "";
+        if (textarea.form) {
+          off(textarea.form, "submit", save);
+          if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == "function")
+            { textarea.form.submit = realSubmit; }
+        }
+      };
+    };
+
+    textarea.style.display = "none";
+    var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },
+      options);
+    return cm
+  }
+
+  function addLegacyProps(CodeMirror) {
+    CodeMirror.off = off;
+    CodeMirror.on = on;
+    CodeMirror.wheelEventPixels = wheelEventPixels;
+    CodeMirror.Doc = Doc;
+    CodeMirror.splitLines = splitLinesAuto;
+    CodeMirror.countColumn = countColumn;
+    CodeMirror.findColumn = findColumn;
+    CodeMirror.isWordChar = isWordCharBasic;
+    CodeMirror.Pass = Pass;
+    CodeMirror.signal = signal;
+    CodeMirror.Line = Line;
+    CodeMirror.changeEnd = changeEnd;
+    CodeMirror.scrollbarModel = scrollbarModel;
+    CodeMirror.Pos = Pos;
+    CodeMirror.cmpPos = cmp;
+    CodeMirror.modes = modes;
+    CodeMirror.mimeModes = mimeModes;
+    CodeMirror.resolveMode = resolveMode;
+    CodeMirror.getMode = getMode;
+    CodeMirror.modeExtensions = modeExtensions;
+    CodeMirror.extendMode = extendMode;
+    CodeMirror.copyState = copyState;
+    CodeMirror.startState = startState;
+    CodeMirror.innerMode = innerMode;
+    CodeMirror.commands = commands;
+    CodeMirror.keyMap = keyMap;
+    CodeMirror.keyName = keyName;
+    CodeMirror.isModifierKey = isModifierKey;
+    CodeMirror.lookupKey = lookupKey;
+    CodeMirror.normalizeKeyMap = normalizeKeyMap;
+    CodeMirror.StringStream = StringStream;
+    CodeMirror.SharedTextMarker = SharedTextMarker;
+    CodeMirror.TextMarker = TextMarker;
+    CodeMirror.LineWidget = LineWidget;
+    CodeMirror.e_preventDefault = e_preventDefault;
+    CodeMirror.e_stopPropagation = e_stopPropagation;
+    CodeMirror.e_stop = e_stop;
+    CodeMirror.addClass = addClass;
+    CodeMirror.contains = contains;
+    CodeMirror.rmClass = rmClass;
+    CodeMirror.keyNames = keyNames;
+  }
+
+  // EDITOR CONSTRUCTOR
+
+  defineOptions(CodeMirror);
+
+  addEditorMethods(CodeMirror);
+
+  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
+  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
+  for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
+    { CodeMirror.prototype[prop] = (function(method) {
+      return function() {return method.apply(this.doc, arguments)}
+    })(Doc.prototype[prop]); } }
+
+  eventMixin(Doc);
+  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};
+
+  // Extra arguments are stored as the mode's dependencies, which is
+  // used by (legacy) mechanisms like loadmode.js to automatically
+  // load a mode. (Preferred mechanism is the require/define calls.)
+  CodeMirror.defineMode = function(name/*, mode, …*/) {
+    if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name; }
+    defineMode.apply(this, arguments);
+  };
+ 
+  CodeMirror.defineMIME = defineMIME;
+
+  // Minimal default mode.
+  CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); });
+  CodeMirror.defineMIME("text/plain", "null");
+
+  // EXTENSIONS
+
+  CodeMirror.defineExtension = function (name, func) {
+    CodeMirror.prototype[name] = func;
+  };
+  CodeMirror.defineDocExtension = function (name, func) {
+    Doc.prototype[name] = func;
+  };
+
+  CodeMirror.fromTextArea = fromTextArea;
+
+  addLegacyProps(CodeMirror);
+
+  CodeMirror.version = "5.53.2";
+
+  return CodeMirror;
+
+})));
diff --git a/codemirror.css b/codemirror.css
index 18b0bf7..bc910fb 100644
--- a/codemirror.css
+++ b/codemirror.css
@@ -5,6 +5,7 @@
   font-family: monospace;
   height: 300px;
   color: black;
+  direction: ltr;
 }
 
 /* PADDING */
@@ -12,7 +13,8 @@
 .CodeMirror-lines {
   padding: 4px 0; /* Vertical padding around content */
 }
-.CodeMirror pre {
+.CodeMirror pre.CodeMirror-line,
+.CodeMirror pre.CodeMirror-line-like {
   padding: 0 4px; /* Horizontal padding of content */
 }
 
@@ -58,7 +60,12 @@
 .cm-fat-cursor div.CodeMirror-cursors {
   z-index: 1;
 }
-
+.cm-fat-cursor-mark {
+  background-color: rgba(20, 255, 20, 0.5);
+  -webkit-animation: blink 1.06s steps(1) infinite;
+  -moz-animation: blink 1.06s steps(1) infinite;
+  animation: blink 1.06s steps(1) infinite;
+}
 .cm-animate-fat-cursor {
   width: auto;
   border: 0;
@@ -90,7 +97,7 @@
 
 .CodeMirror-rulers {
   position: absolute;
-  left: 0; right: 0; top: -50px; bottom: -20px;
+  left: 0; right: 0; top: -50px; bottom: 0;
   overflow: hidden;
 }
 .CodeMirror-ruler {
@@ -119,7 +126,7 @@
 .cm-s-default .cm-property,
 .cm-s-default .cm-operator {}
 .cm-s-default .cm-variable-2 {color: #05a;}
-.cm-s-default .cm-variable-3 {color: #085;}
+.cm-s-default .cm-variable-3, .cm-s-default .cm-type {color: #085;}
 .cm-s-default .cm-comment {color: #a50;}
 .cm-s-default .cm-string {color: #a11;}
 .cm-s-default .cm-string-2 {color: #f50;}
@@ -139,8 +146,8 @@
 
 /* Default styles for common addons */
 
-div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
-div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
+div.CodeMirror span.CodeMirror-matchingbracket {color: #0b0;}
+div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #a22;}
 .CodeMirror-matchingtag { background: rgba(255, 150, 0, .3); }
 .CodeMirror-activeline-background {background: #e8f2ff;}
 
@@ -206,9 +213,6 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   display: inline-block;
   vertical-align: top;
   margin-bottom: -30px;
-  /* Hack to make IE7 behave */
-  *zoom:1;
-  *display:inline;
 }
 .CodeMirror-gutter-wrapper {
   position: absolute;
@@ -226,17 +230,15 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   cursor: default;
   z-index: 4;
 }
-.CodeMirror-gutter-wrapper {
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  user-select: none;
-}
+.CodeMirror-gutter-wrapper ::selection { background-color: transparent }
+.CodeMirror-gutter-wrapper ::-moz-selection { background-color: transparent }
 
 .CodeMirror-lines {
   cursor: text;
   min-height: 1px; /* prevents collapsing before first draw */
 }
-.CodeMirror pre {
+.CodeMirror pre.CodeMirror-line,
+.CodeMirror pre.CodeMirror-line-like {
   /* Reset some styles that the rest of the page might have set */
   -moz-border-radius: 0; -webkit-border-radius: 0; border-radius: 0;
   border-width: 0;
@@ -252,10 +254,11 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   position: relative;
   overflow: visible;
   -webkit-tap-highlight-color: transparent;
-  -webkit-font-variant-ligatures: none;
-  font-variant-ligatures: none;
+  -webkit-font-variant-ligatures: contextual;
+  font-variant-ligatures: contextual;
 }
-.CodeMirror-wrap pre {
+.CodeMirror-wrap pre.CodeMirror-line,
+.CodeMirror-wrap pre.CodeMirror-line-like {
   word-wrap: break-word;
   white-space: pre-wrap;
   word-break: normal;
@@ -270,11 +273,13 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 .CodeMirror-linewidget {
   position: relative;
   z-index: 2;
-  overflow: auto;
+  padding: 0.1px; /* Force widget margins to stay inside of the container */
 }
 
 .CodeMirror-widget {}
 
+.CodeMirror-rtl pre { direction: rtl; }
+
 .CodeMirror-code {
   outline: none;
 }
@@ -323,13 +328,10 @@ div.CodeMirror-dragcursors {
 .CodeMirror-line::-moz-selection, .CodeMirror-line > span::-moz-selection, .CodeMirror-line > span > span::-moz-selection { background: #d7d4f0; }
 
 .cm-searching {
-  background: #ffa;
-  background: rgba(255, 255, 0, .4);
+  background-color: #ffa;
+  background-color: rgba(255, 255, 0, .4);
 }
 
-/* IE7 hack to prevent it from returning funny offsetTops on the spans */
-.CodeMirror span { *vertical-align: text-bottom; }
-
 /* Used to force a border model for a node */
 .cm-force-border { padding-right: .1px; }
 
diff --git a/emacs.js b/emacs.js
new file mode 100644
index 0000000..fe4882e
--- /dev/null
+++ b/emacs.js
@@ -0,0 +1,419 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  var Pos = CodeMirror.Pos;
+  function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }
+
+  // Kill 'ring'
+
+  var killRing = [];
+  function addToRing(str) {
+    killRing.push(str);
+    if (killRing.length > 50) killRing.shift();
+  }
+  function growRingTop(str) {
+    if (!killRing.length) return addToRing(str);
+    killRing[killRing.length - 1] += str;
+  }
+  function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
+  function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }
+
+  var lastKill = null;
+
+  function kill(cm, from, to, ring, text) {
+    if (text == null) text = cm.getRange(from, to);
+
+    if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
+      growRingTop(text);
+    else if (ring !== false)
+      addToRing(text);
+    cm.replaceRange("", from, to, "+delete");
+
+    if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
+    else lastKill = null;
+  }
+
+  // Boundaries of various units
+
+  function byChar(cm, pos, dir) {
+    return cm.findPosH(pos, dir, "char", true);
+  }
+
+  function byWord(cm, pos, dir) {
+    return cm.findPosH(pos, dir, "word", true);
+  }
+
+  function byLine(cm, pos, dir) {
+    return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
+  }
+
+  function byPage(cm, pos, dir) {
+    return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
+  }
+
+  function byParagraph(cm, pos, dir) {
+    var no = pos.line, line = cm.getLine(no);
+    var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
+    var fst = cm.firstLine(), lst = cm.lastLine();
+    for (;;) {
+      no += dir;
+      if (no < fst || no > lst)
+        return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
+      line = cm.getLine(no);
+      var hasText = /\S/.test(line);
+      if (hasText) sawText = true;
+      else if (sawText) return Pos(no, 0);
+    }
+  }
+
+  function bySentence(cm, pos, dir) {
+    var line = pos.line, ch = pos.ch;
+    var text = cm.getLine(pos.line), sawWord = false;
+    for (;;) {
+      var next = text.charAt(ch + (dir < 0 ? -1 : 0));
+      if (!next) { // End/beginning of line reached
+        if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
+        text = cm.getLine(line + dir);
+        if (!/\S/.test(text)) return Pos(line, ch);
+        line += dir;
+        ch = dir < 0 ? text.length : 0;
+        continue;
+      }
+      if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
+      if (!sawWord) sawWord = /\w/.test(next);
+      ch += dir;
+    }
+  }
+
+  function byExpr(cm, pos, dir) {
+    var wrap;
+    if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
+        && wrap.match && (wrap.forward ? 1 : -1) == dir)
+      return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;
+
+    for (var first = true;; first = false) {
+      var token = cm.getTokenAt(pos);
+      var after = Pos(pos.line, dir < 0 ? token.start : token.end);
+      if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
+        var newPos = cm.findPosH(after, dir, "char");
+        if (posEq(after, newPos)) return pos;
+        else pos = newPos;
+      } else {
+        return after;
+      }
+    }
+  }
+
+  // Prefixes (only crudely supported)
+
+  function getPrefix(cm, precise) {
+    var digits = cm.state.emacsPrefix;
+    if (!digits) return precise ? null : 1;
+    clearPrefix(cm);
+    return digits == "-" ? -1 : Number(digits);
+  }
+
+  function repeated(cmd) {
+    var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
+    return function(cm) {
+      var prefix = getPrefix(cm);
+      f(cm);
+      for (var i = 1; i < prefix; ++i) f(cm);
+    };
+  }
+
+  function findEnd(cm, pos, by, dir) {
+    var prefix = getPrefix(cm);
+    if (prefix < 0) { dir = -dir; prefix = -prefix; }
+    for (var i = 0; i < prefix; ++i) {
+      var newPos = by(cm, pos, dir);
+      if (posEq(newPos, pos)) break;
+      pos = newPos;
+    }
+    return pos;
+  }
+
+  function move(by, dir) {
+    var f = function(cm) {
+      cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
+    };
+    f.motion = true;
+    return f;
+  }
+
+  function killTo(cm, by, dir, ring) {
+    var selections = cm.listSelections(), cursor;
+    var i = selections.length;
+    while (i--) {
+      cursor = selections[i].head;
+      kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
+    }
+  }
+
+  function killRegion(cm, ring) {
+    if (cm.somethingSelected()) {
+      var selections = cm.listSelections(), selection;
+      var i = selections.length;
+      while (i--) {
+        selection = selections[i];
+        kill(cm, selection.anchor, selection.head, ring);
+      }
+      return true;
+    }
+  }
+
+  function addPrefix(cm, digit) {
+    if (cm.state.emacsPrefix) {
+      if (digit != "-") cm.state.emacsPrefix += digit;
+      return;
+    }
+    // Not active yet
+    cm.state.emacsPrefix = digit;
+    cm.on("keyHandled", maybeClearPrefix);
+    cm.on("inputRead", maybeDuplicateInput);
+  }
+
+  var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};
+
+  function maybeClearPrefix(cm, arg) {
+    if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
+      clearPrefix(cm);
+  }
+
+  function clearPrefix(cm) {
+    cm.state.emacsPrefix = null;
+    cm.off("keyHandled", maybeClearPrefix);
+    cm.off("inputRead", maybeDuplicateInput);
+  }
+
+  function maybeDuplicateInput(cm, event) {
+    var dup = getPrefix(cm);
+    if (dup > 1 && event.origin == "+input") {
+      var one = event.text.join("\n"), txt = "";
+      for (var i = 1; i < dup; ++i) txt += one;
+      cm.replaceSelection(txt);
+    }
+  }
+
+  function addPrefixMap(cm) {
+    cm.state.emacsPrefixMap = true;
+    cm.addKeyMap(prefixMap);
+    cm.on("keyHandled", maybeRemovePrefixMap);
+    cm.on("inputRead", maybeRemovePrefixMap);
+  }
+
+  function maybeRemovePrefixMap(cm, arg) {
+    if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
+    cm.removeKeyMap(prefixMap);
+    cm.state.emacsPrefixMap = false;
+    cm.off("keyHandled", maybeRemovePrefixMap);
+    cm.off("inputRead", maybeRemovePrefixMap);
+  }
+
+  // Utilities
+
+  function setMark(cm) {
+    cm.setCursor(cm.getCursor());
+    cm.setExtending(!cm.getExtending());
+    cm.on("change", function() { cm.setExtending(false); });
+  }
+
+  function clearMark(cm) {
+    cm.setExtending(false);
+    cm.setCursor(cm.getCursor());
+  }
+
+  function getInput(cm, msg, f) {
+    if (cm.openDialog)
+      cm.openDialog(msg + ": <input type=\"text\" style=\"width: 10em\"/>", f, {bottom: true});
+    else
+      f(prompt(msg, ""));
+  }
+
+  function operateOnWord(cm, op) {
+    var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
+    cm.replaceRange(op(cm.getRange(start, end)), start, end);
+    cm.setCursor(end);
+  }
+
+  function toEnclosingExpr(cm) {
+    var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
+    var stack = [];
+    while (line >= cm.firstLine()) {
+      var text = cm.getLine(line);
+      for (var i = ch == null ? text.length : ch; i > 0;) {
+        var ch = text.charAt(--i);
+        if (ch == ")")
+          stack.push("(");
+        else if (ch == "]")
+          stack.push("[");
+        else if (ch == "}")
+          stack.push("{");
+        else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
+          return cm.extendSelection(Pos(line, i));
+      }
+      --line; ch = null;
+    }
+  }
+
+  function quit(cm) {
+    cm.execCommand("clearSearch");
+    clearMark(cm);
+  }
+
+  CodeMirror.emacs = {kill: kill, killRegion: killRegion, repeated: repeated};
+
+  // Actual keymap
+
+  var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
+    "Ctrl-W": function(cm) {kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);},
+    "Ctrl-K": repeated(function(cm) {
+      var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
+      var text = cm.getRange(start, end);
+      if (!/\S/.test(text)) {
+        text += "\n";
+        end = Pos(start.line + 1, 0);
+      }
+      kill(cm, start, end, "grow", text);
+    }),
+    "Alt-W": function(cm) {
+      addToRing(cm.getSelection());
+      clearMark(cm);
+    },
+    "Ctrl-Y": function(cm) {
+      var start = cm.getCursor();
+      cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
+      cm.setSelection(start, cm.getCursor());
+    },
+    "Alt-Y": function(cm) {cm.replaceSelection(popFromRing(), "around", "paste");},
+
+    "Ctrl-Space": setMark, "Ctrl-Shift-2": setMark,
+
+    "Ctrl-F": move(byChar, 1), "Ctrl-B": move(byChar, -1),
+    "Right": move(byChar, 1), "Left": move(byChar, -1),
+    "Ctrl-D": function(cm) { killTo(cm, byChar, 1, false); },
+    "Delete": function(cm) { killRegion(cm, false) || killTo(cm, byChar, 1, false); },
+    "Ctrl-H": function(cm) { killTo(cm, byChar, -1, false); },
+    "Backspace": function(cm) { killRegion(cm, false) || killTo(cm, byChar, -1, false); },
+
+    "Alt-F": move(byWord, 1), "Alt-B": move(byWord, -1),
+    "Alt-Right": move(byWord, 1), "Alt-Left": move(byWord, -1),
+    "Alt-D": function(cm) { killTo(cm, byWord, 1, "grow"); },
+    "Alt-Backspace": function(cm) { killTo(cm, byWord, -1, "grow"); },
+
+    "Ctrl-N": move(byLine, 1), "Ctrl-P": move(byLine, -1),
+    "Down": move(byLine, 1), "Up": move(byLine, -1),
+    "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+    "End": "goLineEnd", "Home": "goLineStart",
+
+    "Alt-V": move(byPage, -1), "Ctrl-V": move(byPage, 1),
+    "PageUp": move(byPage, -1), "PageDown": move(byPage, 1),
+
+    "Ctrl-Up": move(byParagraph, -1), "Ctrl-Down": move(byParagraph, 1),
+
+    "Alt-A": move(bySentence, -1), "Alt-E": move(bySentence, 1),
+    "Alt-K": function(cm) { killTo(cm, bySentence, 1, "grow"); },
+
+    "Ctrl-Alt-K": function(cm) { killTo(cm, byExpr, 1, "grow"); },
+    "Ctrl-Alt-Backspace": function(cm) { killTo(cm, byExpr, -1, "grow"); },
+    "Ctrl-Alt-F": move(byExpr, 1), "Ctrl-Alt-B": move(byExpr, -1, "grow"),
+
+    "Shift-Ctrl-Alt-2": function(cm) {
+      var cursor = cm.getCursor();
+      cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
+    },
+    "Ctrl-Alt-T": function(cm) {
+      var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1);
+      var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1);
+      cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) +
+                      cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
+    },
+    "Ctrl-Alt-U": repeated(toEnclosingExpr),
+
+    "Alt-Space": function(cm) {
+      var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line);
+      while (from && /\s/.test(text.charAt(from - 1))) --from;
+      while (to < text.length && /\s/.test(text.charAt(to))) ++to;
+      cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
+    },
+    "Ctrl-O": repeated(function(cm) { cm.replaceSelection("\n", "start"); }),
+    "Ctrl-T": repeated(function(cm) {
+      cm.execCommand("transposeChars");
+    }),
+
+    "Alt-C": repeated(function(cm) {
+      operateOnWord(cm, function(w) {
+        var letter = w.search(/\w/);
+        if (letter == -1) return w;
+        return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase();
+      });
+    }),
+    "Alt-U": repeated(function(cm) {
+      operateOnWord(cm, function(w) { return w.toUpperCase(); });
+    }),
+    "Alt-L": repeated(function(cm) {
+      operateOnWord(cm, function(w) { return w.toLowerCase(); });
+    }),
+
+    "Alt-;": "toggleComment",
+
+    "Ctrl-/": repeated("undo"), "Shift-Ctrl--": repeated("undo"),
+    "Ctrl-Z": repeated("undo"), "Cmd-Z": repeated("undo"),
+    "Shift-Ctrl-Z": "redo",
+    "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd",
+    "Ctrl-S": "findPersistentNext", "Ctrl-R": "findPersistentPrev", "Ctrl-G": quit, "Shift-Alt-5": "replace",
+    "Alt-/": "autocomplete",
+    "Enter": "newlineAndIndent",
+    "Ctrl-J": repeated(function(cm) { cm.replaceSelection("\n", "end"); }),
+    "Tab": "indentAuto",
+
+    "Alt-G G": function(cm) {
+      var prefix = getPrefix(cm, true);
+      if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);
+
+      getInput(cm, "Goto line", function(str) {
+        var num;
+        if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
+          cm.setCursor(num - 1);
+      });
+    },
+
+    "Ctrl-X Tab": function(cm) {
+      cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
+    },
+    "Ctrl-X Ctrl-X": function(cm) {
+      cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
+    },
+    "Ctrl-X Ctrl-S": "save",
+    "Ctrl-X Ctrl-W": "save",
+    "Ctrl-X S": "saveAll",
+    "Ctrl-X F": "open",
+    "Ctrl-X U": repeated("undo"),
+    "Ctrl-X K": "close",
+    "Ctrl-X Delete": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow"); },
+    "Ctrl-X H": "selectAll",
+
+    "Ctrl-Q Tab": repeated("insertTab"),
+    "Ctrl-U": addPrefixMap,
+    "fallthrough": "default"
+  });
+
+  var prefixMap = {"Ctrl-G": clearPrefix};
+  function regPrefix(d) {
+    prefixMap[d] = function(cm) { addPrefix(cm, d); };
+    keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); };
+    prefixPreservingKeys["Ctrl-" + d] = true;
+  }
+  for (var i = 0; i < 10; ++i) regPrefix(String(i));
+  regPrefix("-");
+});
diff --git a/favicon.ico b/favicon.ico
new file mode 100644
index 0000000..f3018e4
Binary files /dev/null and b/favicon.ico differ
diff --git a/index.html b/index.html
index 888d1ef..e1e0ed7 100644
--- a/index.html
+++ b/index.html
@@ -1,22 +1,76 @@
 <html>
-<script src="codemirror-compressed.js"></script>
-<link rel="stylesheet" href="codemirror.css">
-<link rel="stylesheet" href="dialog.css">
-<script src="sjcl.js"></script>
-<body>
-<input type="text" id="f" placeholder="Filename"><input type="text" id="g" placeholder="Gist ID"><button id="sb">Sync</button>
+<head>
+<title>Encrypted Gist Editor</title>
+<link rel="icon" type="image/x-icon" href="./favicon.ico">
+<script src="sjcl.js" async defer></script> 
+<script src="codemirror-compressed.js"></script> 
+<script src="sublime.js"></script>
+<script src="emacs.js" ></script> 
+<script src="vim.js" ></script> 
+<!-- <script src="merged-scripts.js" async defer></script> -->
+<!-- <link rel="stylesheet" href="codemirror.css"> -->
+<!-- <link rel="stylesheet" href="dialog.css">  -->
+<link rel="stylesheet" href="merged-styles.css">
+</head>
+<body onload="randombg()" >
+    <div id="random" class="round-15">
+        <div class="container editor">
+<button class="button-85" role="button" id="sb"> SYNC BUTTON START</button>
+========
+<button class="button-62" role="button" onclick=" localStorage.removeItem('gist-id');">Clear Gist ID </button>
+======
+<button class="button-2" role="button" onclick="localStorage.clear();">Clear All Data </button>
+<button class="button-2" role="button" onclick="localStorage.removeItem('gist-crypt-token');">Clear Gist Token </button>
+>>>>>
+<button class="button-62" role="button" onclick="localStorage.setItem('gist-crypt-keymap', JSON.stringify('default'));">Keys: Default </button>
+<button class="button-86" role="button" onclick="localStorage.setItem('gist-crypt-keymap', JSON.stringify('vim'));">Keys: ViM </button>
+<button class="button-86" role="button" onclick="localStorage.setItem('gist-crypt-keymap', JSON.stringify('emacs'));">Keys: Emacs </button>
+<button class="button-85" role="button" onclick="localStorage.setItem('gist-crypt-keymap', JSON.stringify('sublime'));">Keys: Sublime</button> (reload ..) <br>
+
+  <input type="text" id="f" placeholder="Filename"><input type="text" id="g" placeholder="Gist ID">
+</div></div>
 <script>
+
+function randombg(){
+  var random= Math.floor(Math.random() * 6) + 0;
+  var bigSize = ["url('https://source.unsplash.com/user/jersey_photos')",
+                 "url('https://source.unsplash.com/user/nimbus_vulpis')",
+                 "url('https://source.unsplash.com/user/aryakrisdyantara')",
+                 "url('https://source.unsplash.com/user/chanwei_snap')",
+                 "url('https://source.unsplash.com/user/neom')"];
+  document.getElementById("random").style.backgroundImage=bigSize[random];
+}
+
+
 (function(){
 //TODO: URL params for filename, gid (update URL without refresh)?
-var myCM=CodeMirror(document.body,{
+if(localStorage.getItem('gist-crypt-keymap')) {
+    var keymapper=localStorage.getItem('gist-crypt-keymap').replace(/['"]+/g, '');
+} else { var keymapper=""}
+if (typeof keymapper == 'undefined' || !keymapper || keymapper.length === 0 || keymapper === "" || !/[^\s]/.test(keymapper) || /^\s*$/.test(keymapper) || keymapper.replace(/\s/g,"") === "")
+      {
+      var keymapper='vim';
+      localStorage.setItem('gist-crypt-keymap', JSON.stringify(keymapper));
+     }
+//var myCM=CodeMirror(document.body,{
+var myCM=CodeMirror(document.getElementById("random"),{
   lineNumbers:true,
   matchBrackets:true,
   autofocus:true,
   lineWrapping:true,
-  keyMap:'vim'
+  keyMap: keymapper
 });
+// init addon stuff
+document.querySelector('#sb').textContent = 'LOAD gist';
+if(localStorage.getItem('gist-id')) {
+    document.querySelector('#g').value=localStorage.getItem('gist-id').replace(/['"]+/g, '');
+}
+//prevent writing a file name before loading
+document.getElementById('f').readOnly=true;
 myCM.setSize(null,"97%");
+//ask localstorage
 var pw=prompt('Content encryption password'),gc=null;
+
 function req(m,p,s,cb){
     var r=new XMLHttpRequest();
     r.open(m,p,true);
@@ -29,6 +83,15 @@
     };
 }
 function sync(){
+     gc=JSON.parse(localStorage.getItem('gist-crypt-token'));
+     //only ask if localstorage acts weird
+     if (typeof gc == 'undefined' || !gc || gc.length === 0 || gc === "" || !/[^\s]/.test(gc) || /^\s*$/.test(gc) || gc.replace(/\s/g,"") === "")
+      {
+      gc=prompt('Basic Auth colon-separated GH credential string (e.g., "username:TOKEN") - leave blank for read only operation')
+      localStorage.setItem('gist-crypt-token', JSON.stringify(gc));
+      }
+
+
     if(!gc)gc=prompt('Basic Auth colon-separated GH credential string (e.g., "username:password") - leave blank for anonymous gist');
     if(myCM.getValue().length===0){
         if(g.value){
@@ -53,6 +116,9 @@
     }
 }
 window.onbeforeunload=function(){return'You will lose changes if you leave this page without Syncing';};
-sb.onclick=function(){sync();};
+sb.onclick=function(){ 
+    localStorage.setItem('gist-id', JSON.stringify(document.querySelector('#g').value));
+     sync();document.querySelector('#sb').textContent = 'Save gist';document.getElementById('f').readOnly=false; };
 })();
+
 </script></body></html>
diff --git a/merged-scripts.js b/merged-scripts.js
new file mode 100644
index 0000000..3b7517d
--- /dev/null
+++ b/merged-scripts.js
@@ -0,0 +1,6726 @@
+
+  // CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+    if (typeof exports == "object" && typeof module == "object") // CommonJS
+      mod(require("../lib/codemirror"));
+    else if (typeof define == "function" && define.amd) // AMD
+      define(["../lib/codemirror"], mod);
+    else // Plain browser env
+      mod(CodeMirror);
+  })(function(CodeMirror) {
+    "use strict";
+  
+    var Pos = CodeMirror.Pos;
+    function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }
+  
+    // Kill 'ring'
+  
+    var killRing = [];
+    function addToRing(str) {
+      killRing.push(str);
+      if (killRing.length > 50) killRing.shift();
+    }
+    function growRingTop(str) {
+      if (!killRing.length) return addToRing(str);
+      killRing[killRing.length - 1] += str;
+    }
+    function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
+    function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }
+  
+    var lastKill = null;
+  
+    function kill(cm, from, to, ring, text) {
+      if (text == null) text = cm.getRange(from, to);
+  
+      if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
+        growRingTop(text);
+      else if (ring !== false)
+        addToRing(text);
+      cm.replaceRange("", from, to, "+delete");
+  
+      if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
+      else lastKill = null;
+    }
+  
+    // Boundaries of various units
+  
+    function byChar(cm, pos, dir) {
+      return cm.findPosH(pos, dir, "char", true);
+    }
+  
+    function byWord(cm, pos, dir) {
+      return cm.findPosH(pos, dir, "word", true);
+    }
+  
+    function byLine(cm, pos, dir) {
+      return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
+    }
+  
+    function byPage(cm, pos, dir) {
+      return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
+    }
+  
+    function byParagraph(cm, pos, dir) {
+      var no = pos.line, line = cm.getLine(no);
+      var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
+      var fst = cm.firstLine(), lst = cm.lastLine();
+      for (;;) {
+        no += dir;
+        if (no < fst || no > lst)
+          return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
+        line = cm.getLine(no);
+        var hasText = /\S/.test(line);
+        if (hasText) sawText = true;
+        else if (sawText) return Pos(no, 0);
+      }
+    }
+  
+    function bySentence(cm, pos, dir) {
+      var line = pos.line, ch = pos.ch;
+      var text = cm.getLine(pos.line), sawWord = false;
+      for (;;) {
+        var next = text.charAt(ch + (dir < 0 ? -1 : 0));
+        if (!next) { // End/beginning of line reached
+          if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
+          text = cm.getLine(line + dir);
+          if (!/\S/.test(text)) return Pos(line, ch);
+          line += dir;
+          ch = dir < 0 ? text.length : 0;
+          continue;
+        }
+        if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
+        if (!sawWord) sawWord = /\w/.test(next);
+        ch += dir;
+      }
+    }
+  
+    function byExpr(cm, pos, dir) {
+      var wrap;
+      if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
+          && wrap.match && (wrap.forward ? 1 : -1) == dir)
+        return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;
+  
+      for (var first = true;; first = false) {
+        var token = cm.getTokenAt(pos);
+        var after = Pos(pos.line, dir < 0 ? token.start : token.end);
+        if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
+          var newPos = cm.findPosH(after, dir, "char");
+          if (posEq(after, newPos)) return pos;
+          else pos = newPos;
+        } else {
+          return after;
+        }
+      }
+    }
+  
+    // Prefixes (only crudely supported)
+  
+    function getPrefix(cm, precise) {
+      var digits = cm.state.emacsPrefix;
+      if (!digits) return precise ? null : 1;
+      clearPrefix(cm);
+      return digits == "-" ? -1 : Number(digits);
+    }
+  
+    function repeated(cmd) {
+      var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
+      return function(cm) {
+        var prefix = getPrefix(cm);
+        f(cm);
+        for (var i = 1; i < prefix; ++i) f(cm);
+      };
+    }
+  
+    function findEnd(cm, pos, by, dir) {
+      var prefix = getPrefix(cm);
+      if (prefix < 0) { dir = -dir; prefix = -prefix; }
+      for (var i = 0; i < prefix; ++i) {
+        var newPos = by(cm, pos, dir);
+        if (posEq(newPos, pos)) break;
+        pos = newPos;
+      }
+      return pos;
+    }
+  
+    function move(by, dir) {
+      var f = function(cm) {
+        cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
+      };
+      f.motion = true;
+      return f;
+    }
+  
+    function killTo(cm, by, dir, ring) {
+      var selections = cm.listSelections(), cursor;
+      var i = selections.length;
+      while (i--) {
+        cursor = selections[i].head;
+        kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
+      }
+    }
+  
+    function killRegion(cm, ring) {
+      if (cm.somethingSelected()) {
+        var selections = cm.listSelections(), selection;
+        var i = selections.length;
+        while (i--) {
+          selection = selections[i];
+          kill(cm, selection.anchor, selection.head, ring);
+        }
+        return true;
+      }
+    }
+  
+    function addPrefix(cm, digit) {
+      if (cm.state.emacsPrefix) {
+        if (digit != "-") cm.state.emacsPrefix += digit;
+        return;
+      }
+      // Not active yet
+      cm.state.emacsPrefix = digit;
+      cm.on("keyHandled", maybeClearPrefix);
+      cm.on("inputRead", maybeDuplicateInput);
+    }
+  
+    var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};
+  
+    function maybeClearPrefix(cm, arg) {
+      if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
+        clearPrefix(cm);
+    }
+  
+    function clearPrefix(cm) {
+      cm.state.emacsPrefix = null;
+      cm.off("keyHandled", maybeClearPrefix);
+      cm.off("inputRead", maybeDuplicateInput);
+    }
+  
+    function maybeDuplicateInput(cm, event) {
+      var dup = getPrefix(cm);
+      if (dup > 1 && event.origin == "+input") {
+        var one = event.text.join("\n"), txt = "";
+        for (var i = 1; i < dup; ++i) txt += one;
+        cm.replaceSelection(txt);
+      }
+    }
+  
+    function addPrefixMap(cm) {
+      cm.state.emacsPrefixMap = true;
+      cm.addKeyMap(prefixMap);
+      cm.on("keyHandled", maybeRemovePrefixMap);
+      cm.on("inputRead", maybeRemovePrefixMap);
+    }
+  
+    function maybeRemovePrefixMap(cm, arg) {
+      if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
+      cm.removeKeyMap(prefixMap);
+      cm.state.emacsPrefixMap = false;
+      cm.off("keyHandled", maybeRemovePrefixMap);
+      cm.off("inputRead", maybeRemovePrefixMap);
+    }
+  
+    // Utilities
+  
+    function setMark(cm) {
+      cm.setCursor(cm.getCursor());
+      cm.setExtending(!cm.getExtending());
+      cm.on("change", function() { cm.setExtending(false); });
+    }
+  
+    function clearMark(cm) {
+      cm.setExtending(false);
+      cm.setCursor(cm.getCursor());
+    }
+  
+    function getInput(cm, msg, f) {
+      if (cm.openDialog)
+        cm.openDialog(msg + ": <input type=\"text\" style=\"width: 10em\"/>", f, {bottom: true});
+      else
+        f(prompt(msg, ""));
+    }
+  
+    function operateOnWord(cm, op) {
+      var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
+      cm.replaceRange(op(cm.getRange(start, end)), start, end);
+      cm.setCursor(end);
+    }
+  
+    function toEnclosingExpr(cm) {
+      var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
+      var stack = [];
+      while (line >= cm.firstLine()) {
+        var text = cm.getLine(line);
+        for (var i = ch == null ? text.length : ch; i > 0;) {
+          var ch = text.charAt(--i);
+          if (ch == ")")
+            stack.push("(");
+          else if (ch == "]")
+            stack.push("[");
+          else if (ch == "}")
+            stack.push("{");
+          else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
+            return cm.extendSelection(Pos(line, i));
+        }
+        --line; ch = null;
+      }
+    }
+  
+    function quit(cm) {
+      cm.execCommand("clearSearch");
+      clearMark(cm);
+    }
+  
+    CodeMirror.emacs = {kill: kill, killRegion: killRegion, repeated: repeated};
+  
+    // Actual keymap
+  
+    var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
+      "Ctrl-W": function(cm) {kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);},
+      "Ctrl-K": repeated(function(cm) {
+        var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
+        var text = cm.getRange(start, end);
+        if (!/\S/.test(text)) {
+          text += "\n";
+          end = Pos(start.line + 1, 0);
+        }
+        kill(cm, start, end, "grow", text);
+      }),
+      "Alt-W": function(cm) {
+        addToRing(cm.getSelection());
+        clearMark(cm);
+      },
+      "Ctrl-Y": function(cm) {
+        var start = cm.getCursor();
+        cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
+        cm.setSelection(start, cm.getCursor());
+      },
+      "Alt-Y": function(cm) {cm.replaceSelection(popFromRing(), "around", "paste");},
+  
+      "Ctrl-Space": setMark, "Ctrl-Shift-2": setMark,
+  
+      "Ctrl-F": move(byChar, 1), "Ctrl-B": move(byChar, -1),
+      "Right": move(byChar, 1), "Left": move(byChar, -1),
+      "Ctrl-D": function(cm) { killTo(cm, byChar, 1, false); },
+      "Delete": function(cm) { killRegion(cm, false) || killTo(cm, byChar, 1, false); },
+      "Ctrl-H": function(cm) { killTo(cm, byChar, -1, false); },
+      "Backspace": function(cm) { killRegion(cm, false) || killTo(cm, byChar, -1, false); },
+  
+      "Alt-F": move(byWord, 1), "Alt-B": move(byWord, -1),
+      "Alt-Right": move(byWord, 1), "Alt-Left": move(byWord, -1),
+      "Alt-D": function(cm) { killTo(cm, byWord, 1, "grow"); },
+      "Alt-Backspace": function(cm) { killTo(cm, byWord, -1, "grow"); },
+  
+      "Ctrl-N": move(byLine, 1), "Ctrl-P": move(byLine, -1),
+      "Down": move(byLine, 1), "Up": move(byLine, -1),
+      "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+      "End": "goLineEnd", "Home": "goLineStart",
+  
+      "Alt-V": move(byPage, -1), "Ctrl-V": move(byPage, 1),
+      "PageUp": move(byPage, -1), "PageDown": move(byPage, 1),
+  
+      "Ctrl-Up": move(byParagraph, -1), "Ctrl-Down": move(byParagraph, 1),
+  
+      "Alt-A": move(bySentence, -1), "Alt-E": move(bySentence, 1),
+      "Alt-K": function(cm) { killTo(cm, bySentence, 1, "grow"); },
+  
+      "Ctrl-Alt-K": function(cm) { killTo(cm, byExpr, 1, "grow"); },
+      "Ctrl-Alt-Backspace": function(cm) { killTo(cm, byExpr, -1, "grow"); },
+      "Ctrl-Alt-F": move(byExpr, 1), "Ctrl-Alt-B": move(byExpr, -1, "grow"),
+  
+      "Shift-Ctrl-Alt-2": function(cm) {
+        var cursor = cm.getCursor();
+        cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
+      },
+      "Ctrl-Alt-T": function(cm) {
+        var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1);
+        var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1);
+        cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) +
+                        cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
+      },
+      "Ctrl-Alt-U": repeated(toEnclosingExpr),
+  
+      "Alt-Space": function(cm) {
+        var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line);
+        while (from && /\s/.test(text.charAt(from - 1))) --from;
+        while (to < text.length && /\s/.test(text.charAt(to))) ++to;
+        cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
+      },
+      "Ctrl-O": repeated(function(cm) { cm.replaceSelection("\n", "start"); }),
+      "Ctrl-T": repeated(function(cm) {
+        cm.execCommand("transposeChars");
+      }),
+  
+      "Alt-C": repeated(function(cm) {
+        operateOnWord(cm, function(w) {
+          var letter = w.search(/\w/);
+          if (letter == -1) return w;
+          return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase();
+        });
+      }),
+      "Alt-U": repeated(function(cm) {
+        operateOnWord(cm, function(w) { return w.toUpperCase(); });
+      }),
+      "Alt-L": repeated(function(cm) {
+        operateOnWord(cm, function(w) { return w.toLowerCase(); });
+      }),
+  
+      "Alt-;": "toggleComment",
+  
+      "Ctrl-/": repeated("undo"), "Shift-Ctrl--": repeated("undo"),
+      "Ctrl-Z": repeated("undo"), "Cmd-Z": repeated("undo"),
+      "Shift-Ctrl-Z": "redo",
+      "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd",
+      "Ctrl-S": "findPersistentNext", "Ctrl-R": "findPersistentPrev", "Ctrl-G": quit, "Shift-Alt-5": "replace",
+      "Alt-/": "autocomplete",
+      "Enter": "newlineAndIndent",
+      "Ctrl-J": repeated(function(cm) { cm.replaceSelection("\n", "end"); }),
+      "Tab": "indentAuto",
+  
+      "Alt-G G": function(cm) {
+        var prefix = getPrefix(cm, true);
+        if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);
+  
+        getInput(cm, "Goto line", function(str) {
+          var num;
+          if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
+            cm.setCursor(num - 1);
+        });
+      },
+  
+      "Ctrl-X Tab": function(cm) {
+        cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
+      },
+      "Ctrl-X Ctrl-X": function(cm) {
+        cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
+      },
+      "Ctrl-X Ctrl-S": "save",
+      "Ctrl-X Ctrl-W": "save",
+      "Ctrl-X S": "saveAll",
+      "Ctrl-X F": "open",
+      "Ctrl-X U": repeated("undo"),
+      "Ctrl-X K": "close",
+      "Ctrl-X Delete": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow"); },
+      "Ctrl-X H": "selectAll",
+  
+      "Ctrl-Q Tab": repeated("insertTab"),
+      "Ctrl-U": addPrefixMap,
+      "fallthrough": "default"
+    });
+  
+    var prefixMap = {"Ctrl-G": clearPrefix};
+    function regPrefix(d) {
+      prefixMap[d] = function(cm) { addPrefix(cm, d); };
+      keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); };
+      prefixPreservingKeys["Ctrl-" + d] = true;
+    }
+    for (var i = 0; i < 10; ++i) regPrefix(String(i));
+    regPrefix("-");
+  });
+  // CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+/**
+ * Supported keybindings:
+ *   Too many to list. Refer to defaultKeymap below.
+ *
+ * Supported Ex commands:
+ *   Refer to defaultExCommandMap below.
+ *
+ * Registers: unnamed, -, a-z, A-Z, 0-9
+ *   (Does not respect the special case for number registers when delete
+ *    operator is made with these commands: %, (, ),  , /, ?, n, N, {, } )
+ *   TODO: Implement the remaining registers.
+ *
+ * Marks: a-z, A-Z, and 0-9
+ *   TODO: Implement the remaining special marks. They have more complex
+ *       behavior.
+ *
+ * Events:
+ *  'vim-mode-change' - raised on the editor anytime the current mode changes,
+ *                      Event object: {mode: "visual", subMode: "linewise"}
+ *
+ * Code structure:
+ *  1. Default keymap
+ *  2. Variable declarations and short basic helpers
+ *  3. Instance (External API) implementation
+ *  4. Internal state tracking objects (input state, counter) implementation
+ *     and instantiation
+ *  5. Key handler (the main command dispatcher) implementation
+ *  6. Motion, operator, and action implementations
+ *  7. Helper functions for the key handler, motions, operators, and actions
+ *  8. Set up Vim to work as a keymap for CodeMirror.
+ *  9. Ex command implementations.
+ */
+
+(function(mod) {
+    if (typeof exports == "object" && typeof module == "object") // CommonJS
+      mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/dialog/dialog"), require("../addon/edit/matchbrackets.js"));
+    else if (typeof define == "function" && define.amd) // AMD
+      define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/dialog/dialog", "../addon/edit/matchbrackets"], mod);
+    else // Plain browser env
+      mod(CodeMirror);
+  })(function(CodeMirror) {
+    'use strict';
+  
+    var defaultKeymap = [
+      // Key to key mapping. This goes first to make it possible to override
+      // existing mappings.
+      { keys: '<Left>', type: 'keyToKey', toKeys: 'h' },
+      { keys: '<Right>', type: 'keyToKey', toKeys: 'l' },
+      { keys: '<Up>', type: 'keyToKey', toKeys: 'k' },
+      { keys: '<Down>', type: 'keyToKey', toKeys: 'j' },
+      { keys: '<Space>', type: 'keyToKey', toKeys: 'l' },
+      { keys: '<BS>', type: 'keyToKey', toKeys: 'h', context: 'normal'},
+      { keys: '<Del>', type: 'keyToKey', toKeys: 'x', context: 'normal'},
+      { keys: '<C-Space>', type: 'keyToKey', toKeys: 'W' },
+      { keys: '<C-BS>', type: 'keyToKey', toKeys: 'B', context: 'normal' },
+      { keys: '<S-Space>', type: 'keyToKey', toKeys: 'w' },
+      { keys: '<S-BS>', type: 'keyToKey', toKeys: 'b', context: 'normal' },
+      { keys: '<C-n>', type: 'keyToKey', toKeys: 'j' },
+      { keys: '<C-p>', type: 'keyToKey', toKeys: 'k' },
+      { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>' },
+      { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>' },
+      { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
+      { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
+      { keys: 's', type: 'keyToKey', toKeys: 'cl', context: 'normal' },
+      { keys: 's', type: 'keyToKey', toKeys: 'c', context: 'visual'},
+      { keys: 'S', type: 'keyToKey', toKeys: 'cc', context: 'normal' },
+      { keys: 'S', type: 'keyToKey', toKeys: 'VdO', context: 'visual' },
+      { keys: '<Home>', type: 'keyToKey', toKeys: '0' },
+      { keys: '<End>', type: 'keyToKey', toKeys: '$' },
+      { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
+      { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
+      { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
+      { keys: '<Ins>', type: 'action', action: 'toggleOverwrite', context: 'insert' },
+      // Motions
+      { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
+      { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
+      { keys: 'L', type: 'motion', motion: 'moveToBottomLine', motionArgs: { linewise: true, toJumplist: true }},
+      { keys: 'h', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: false }},
+      { keys: 'l', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: true }},
+      { keys: 'j', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, linewise: true }},
+      { keys: 'k', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, linewise: true }},
+      { keys: 'gj', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: true }},
+      { keys: 'gk', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: false }},
+      { keys: 'w', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false }},
+      { keys: 'W', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false, bigWord: true }},
+      { keys: 'e', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, inclusive: true }},
+      { keys: 'E', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, bigWord: true, inclusive: true }},
+      { keys: 'b', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }},
+      { keys: 'B', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false, bigWord: true }},
+      { keys: 'ge', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, inclusive: true }},
+      { keys: 'gE', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, bigWord: true, inclusive: true }},
+      { keys: '{', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: false, toJumplist: true }},
+      { keys: '}', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: true, toJumplist: true }},
+      { keys: '(', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: false }},
+      { keys: ')', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: true }},
+      { keys: '<C-f>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: true }},
+      { keys: '<C-b>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: false }},
+      { keys: '<C-d>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: true, explicitRepeat: true }},
+      { keys: '<C-u>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: false, explicitRepeat: true }},
+      { keys: 'gg', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
+      { keys: 'G', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
+      { keys: '0', type: 'motion', motion: 'moveToStartOfLine' },
+      { keys: '^', type: 'motion', motion: 'moveToFirstNonWhiteSpaceCharacter' },
+      { keys: '+', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true }},
+      { keys: '-', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, toFirstChar:true }},
+      { keys: '_', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
+      { keys: '$', type: 'motion', motion: 'moveToEol', motionArgs: { inclusive: true }},
+      { keys: '%', type: 'motion', motion: 'moveToMatchedSymbol', motionArgs: { inclusive: true, toJumplist: true }},
+      { keys: 'f<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: true , inclusive: true }},
+      { keys: 'F<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: false }},
+      { keys: 't<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: true, inclusive: true }},
+      { keys: 'T<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: false }},
+      { keys: ';', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: true }},
+      { keys: ',', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: false }},
+      { keys: '\'<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true, linewise: true}},
+      { keys: '`<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true}},
+      { keys: ']`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
+      { keys: '[`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
+      { keys: ']\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
+      { keys: '[\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
+      // the next two aren't motions but must come before more general motion declarations
+      { keys: ']p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true, matchIndent: true}},
+      { keys: '[p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true, matchIndent: true}},
+      { keys: ']<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: true, toJumplist: true}},
+      { keys: '[<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: false, toJumplist: true}},
+      { keys: '|', type: 'motion', motion: 'moveToColumn'},
+      { keys: 'o', type: 'motion', motion: 'moveToOtherHighlightedEnd', context:'visual'},
+      { keys: 'O', type: 'motion', motion: 'moveToOtherHighlightedEnd', motionArgs: {sameLine: true}, context:'visual'},
+      // Operators
+      { keys: 'd', type: 'operator', operator: 'delete' },
+      { keys: 'y', type: 'operator', operator: 'yank' },
+      { keys: 'c', type: 'operator', operator: 'change' },
+      { keys: '=', type: 'operator', operator: 'indentAuto' },
+      { keys: '>', type: 'operator', operator: 'indent', operatorArgs: { indentRight: true }},
+      { keys: '<', type: 'operator', operator: 'indent', operatorArgs: { indentRight: false }},
+      { keys: 'g~', type: 'operator', operator: 'changeCase' },
+      { keys: 'gu', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, isEdit: true },
+      { keys: 'gU', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, isEdit: true },
+      { keys: 'n', type: 'motion', motion: 'findNext', motionArgs: { forward: true, toJumplist: true }},
+      { keys: 'N', type: 'motion', motion: 'findNext', motionArgs: { forward: false, toJumplist: true }},
+      // Operator-Motion dual commands
+      { keys: 'x', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorMotionArgs: { visualLine: false }},
+      { keys: 'X', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: false }, operatorMotionArgs: { visualLine: true }},
+      { keys: 'D', type: 'operatorMotion', operator: 'delete', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
+      { keys: 'D', type: 'operator', operator: 'delete', operatorArgs: { linewise: true }, context: 'visual'},
+      { keys: 'Y', type: 'operatorMotion', operator: 'yank', motion: 'expandToLine', motionArgs: { linewise: true }, context: 'normal'},
+      { keys: 'Y', type: 'operator', operator: 'yank', operatorArgs: { linewise: true }, context: 'visual'},
+      { keys: 'C', type: 'operatorMotion', operator: 'change', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
+      { keys: 'C', type: 'operator', operator: 'change', operatorArgs: { linewise: true }, context: 'visual'},
+      { keys: '~', type: 'operatorMotion', operator: 'changeCase', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorArgs: { shouldMoveCursor: true }, context: 'normal'},
+      { keys: '~', type: 'operator', operator: 'changeCase', context: 'visual'},
+      { keys: '<C-w>', type: 'operatorMotion', operator: 'delete', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }, context: 'insert' },
+      //ignore C-w in normal mode
+      { keys: '<C-w>', type: 'idle', context: 'normal' },
+      // Actions
+      { keys: '<C-i>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: true }},
+      { keys: '<C-o>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: false }},
+      { keys: '<C-e>', type: 'action', action: 'scroll', actionArgs: { forward: true, linewise: true }},
+      { keys: '<C-y>', type: 'action', action: 'scroll', actionArgs: { forward: false, linewise: true }},
+      { keys: 'a', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'charAfter' }, context: 'normal' },
+      { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
+      { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
+      { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
+      { keys: 'gi', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'lastEdit' }, context: 'normal' },
+      { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
+      { keys: 'gI', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'bol'}, context: 'normal' },
+      { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
+      { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
+      { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
+      { keys: 'v', type: 'action', action: 'toggleVisualMode' },
+      { keys: 'V', type: 'action', action: 'toggleVisualMode', actionArgs: { linewise: true }},
+      { keys: '<C-v>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
+      { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
+      { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
+      { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
+      { keys: 'gJ', type: 'action', action: 'joinLines', actionArgs: { keepSpaces: true }, isEdit: true },
+      { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
+      { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
+      { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
+      { keys: '@<character>', type: 'action', action: 'replayMacro' },
+      { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
+      // Handle Replace-mode as a special case of insert mode.
+      { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }, context: 'normal'},
+      { keys: 'R', type: 'operator', operator: 'change', operatorArgs: { linewise: true, fullLine: true }, context: 'visual', exitVisualBlock: true},
+      { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
+      { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
+      { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
+      { keys: '<C-r>', type: 'action', action: 'redo' },
+      { keys: 'm<character>', type: 'action', action: 'setMark' },
+      { keys: '"<character>', type: 'action', action: 'setRegister' },
+      { keys: 'zz', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }},
+      { keys: 'z.', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+      { keys: 'zt', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }},
+      { keys: 'z<CR>', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+      { keys: 'z-', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }},
+      { keys: 'zb', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+      { keys: '.', type: 'action', action: 'repeatLastEdit' },
+      { keys: '<C-a>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: true, backtrack: false}},
+      { keys: '<C-x>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: false, backtrack: false}},
+      { keys: '<C-t>', type: 'action', action: 'indent', actionArgs: { indentRight: true }, context: 'insert' },
+      { keys: '<C-d>', type: 'action', action: 'indent', actionArgs: { indentRight: false }, context: 'insert' },
+      // Text object motions
+      { keys: 'a<character>', type: 'motion', motion: 'textObjectManipulation' },
+      { keys: 'i<character>', type: 'motion', motion: 'textObjectManipulation', motionArgs: { textObjectInner: true }},
+      // Search
+      { keys: '/', type: 'search', searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
+      { keys: '?', type: 'search', searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
+      { keys: '*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
+      { keys: '#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
+      { keys: 'g*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
+      { keys: 'g#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
+      // Ex command
+      { keys: ':', type: 'ex' }
+    ];
+    var defaultKeymapLength = defaultKeymap.length;
+  
+    /**
+     * Ex commands
+     * Care must be taken when adding to the default Ex command map. For any
+     * pair of commands that have a shared prefix, at least one of their
+     * shortNames must not match the prefix of the other command.
+     */
+    var defaultExCommandMap = [
+      { name: 'colorscheme', shortName: 'colo' },
+      { name: 'map' },
+      { name: 'imap', shortName: 'im' },
+      { name: 'nmap', shortName: 'nm' },
+      { name: 'vmap', shortName: 'vm' },
+      { name: 'unmap' },
+      { name: 'write', shortName: 'w' },
+      { name: 'undo', shortName: 'u' },
+      { name: 'redo', shortName: 'red' },
+      { name: 'set', shortName: 'se' },
+      { name: 'setlocal', shortName: 'setl' },
+      { name: 'setglobal', shortName: 'setg' },
+      { name: 'sort', shortName: 'sor' },
+      { name: 'substitute', shortName: 's', possiblyAsync: true },
+      { name: 'nohlsearch', shortName: 'noh' },
+      { name: 'yank', shortName: 'y' },
+      { name: 'delmarks', shortName: 'delm' },
+      { name: 'registers', shortName: 'reg', excludeFromCommandHistory: true },
+      { name: 'global', shortName: 'g' }
+    ];
+  
+    var Pos = CodeMirror.Pos;
+  
+    var Vim = function() {
+      function enterVimMode(cm) {
+        cm.setOption('disableInput', true);
+        cm.setOption('showCursorWhenSelecting', false);
+        CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+        cm.on('cursorActivity', onCursorActivity);
+        maybeInitVimState(cm);
+        CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
+      }
+  
+      function leaveVimMode(cm) {
+        cm.setOption('disableInput', false);
+        cm.off('cursorActivity', onCursorActivity);
+        CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
+        cm.state.vim = null;
+      }
+  
+      function detachVimMap(cm, next) {
+        if (this == CodeMirror.keyMap.vim) {
+          CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");
+          if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
+            disableFatCursorMark(cm);
+            cm.getInputField().style.caretColor = "";
+          }
+        }
+  
+        if (!next || next.attach != attachVimMap)
+          leaveVimMode(cm);
+      }
+      function attachVimMap(cm, prev) {
+        if (this == CodeMirror.keyMap.vim) {
+          CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");
+          if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
+            enableFatCursorMark(cm);
+            cm.getInputField().style.caretColor = "transparent";
+          }
+        }
+  
+        if (!prev || prev.attach != attachVimMap)
+          enterVimMode(cm);
+      }
+  
+      function updateFatCursorMark(cm) {
+        if (!cm.state.fatCursorMarks) return;
+        clearFatCursorMark(cm);
+        var ranges = cm.listSelections(), result = []
+        for (var i = 0; i < ranges.length; i++) {
+          var range = ranges[i];
+          if (range.empty()) {
+            var lineLength = cm.getLine(range.anchor.line).length;
+            if (range.anchor.ch < lineLength) {
+              result.push(cm.markText(range.anchor, Pos(range.anchor.line, range.anchor.ch + 1),
+                                      {className: "cm-fat-cursor-mark"}));
+            } else {
+              result.push(cm.markText(Pos(range.anchor.line, lineLength - 1),
+                                      Pos(range.anchor.line, lineLength),
+                                      {className: "cm-fat-cursor-mark"}));
+            }
+          }
+        }
+        cm.state.fatCursorMarks = result;
+      }
+  
+      function clearFatCursorMark(cm) {
+        var marks = cm.state.fatCursorMarks;
+        if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
+      }
+  
+      function enableFatCursorMark(cm) {
+        cm.state.fatCursorMarks = [];
+        updateFatCursorMark(cm)
+        cm.on("cursorActivity", updateFatCursorMark)
+      }
+  
+      function disableFatCursorMark(cm) {
+        clearFatCursorMark(cm);
+        cm.off("cursorActivity", updateFatCursorMark);
+        // explicitly set fatCursorMarks to null because event listener above
+        // can be invoke after removing it, if off is called from operation
+        cm.state.fatCursorMarks = null;
+      }
+  
+      // Deprecated, simply setting the keymap works again.
+      CodeMirror.defineOption('vimMode', false, function(cm, val, prev) {
+        if (val && cm.getOption("keyMap") != "vim")
+          cm.setOption("keyMap", "vim");
+        else if (!val && prev != CodeMirror.Init && /^vim/.test(cm.getOption("keyMap")))
+          cm.setOption("keyMap", "default");
+      });
+  
+      function cmKey(key, cm) {
+        if (!cm) { return undefined; }
+        if (this[key]) { return this[key]; }
+        var vimKey = cmKeyToVimKey(key);
+        if (!vimKey) {
+          return false;
+        }
+        var cmd = CodeMirror.Vim.findKey(cm, vimKey);
+        if (typeof cmd == 'function') {
+          CodeMirror.signal(cm, 'vim-keypress', vimKey);
+        }
+        return cmd;
+      }
+  
+      var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
+      var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del',Insert:'Ins'};
+      function cmKeyToVimKey(key) {
+        if (key.charAt(0) == '\'') {
+          // Keypress character binding of format "'a'"
+          return key.charAt(1);
+        }
+        var pieces = key.split(/-(?!$)/);
+        var lastPiece = pieces[pieces.length - 1];
+        if (pieces.length == 1 && pieces[0].length == 1) {
+          // No-modifier bindings use literal character bindings above. Skip.
+          return false;
+        } else if (pieces.length == 2 && pieces[0] == 'Shift' && lastPiece.length == 1) {
+          // Ignore Shift+char bindings as they should be handled by literal character.
+          return false;
+        }
+        var hasCharacter = false;
+        for (var i = 0; i < pieces.length; i++) {
+          var piece = pieces[i];
+          if (piece in modifiers) { pieces[i] = modifiers[piece]; }
+          else { hasCharacter = true; }
+          if (piece in specialKeys) { pieces[i] = specialKeys[piece]; }
+        }
+        if (!hasCharacter) {
+          // Vim does not support modifier only keys.
+          return false;
+        }
+        // TODO: Current bindings expect the character to be lower case, but
+        // it looks like vim key notation uses upper case.
+        if (isUpperCase(lastPiece)) {
+          pieces[pieces.length - 1] = lastPiece.toLowerCase();
+        }
+        return '<' + pieces.join('-') + '>';
+      }
+  
+      function getOnPasteFn(cm) {
+        var vim = cm.state.vim;
+        if (!vim.onPasteFn) {
+          vim.onPasteFn = function() {
+            if (!vim.insertMode) {
+              cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
+              actions.enterInsertMode(cm, {}, vim);
+            }
+          };
+        }
+        return vim.onPasteFn;
+      }
+  
+      var numberRegex = /[\d]/;
+      var wordCharTest = [CodeMirror.isWordChar, function(ch) {
+        return ch && !CodeMirror.isWordChar(ch) && !/\s/.test(ch);
+      }], bigWordCharTest = [function(ch) {
+        return /\S/.test(ch);
+      }];
+      function makeKeyRange(start, size) {
+        var keys = [];
+        for (var i = start; i < start + size; i++) {
+          keys.push(String.fromCharCode(i));
+        }
+        return keys;
+      }
+      var upperCaseAlphabet = makeKeyRange(65, 26);
+      var lowerCaseAlphabet = makeKeyRange(97, 26);
+      var numbers = makeKeyRange(48, 10);
+      var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
+      var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"', '.', ':', '/']);
+  
+      function isLine(cm, line) {
+        return line >= cm.firstLine() && line <= cm.lastLine();
+      }
+      function isLowerCase(k) {
+        return (/^[a-z]$/).test(k);
+      }
+      function isMatchableSymbol(k) {
+        return '()[]{}'.indexOf(k) != -1;
+      }
+      function isNumber(k) {
+        return numberRegex.test(k);
+      }
+      function isUpperCase(k) {
+        return (/^[A-Z]$/).test(k);
+      }
+      function isWhiteSpaceString(k) {
+        return (/^\s*$/).test(k);
+      }
+      function isEndOfSentenceSymbol(k) {
+        return '.?!'.indexOf(k) != -1;
+      }
+      function inArray(val, arr) {
+        for (var i = 0; i < arr.length; i++) {
+          if (arr[i] == val) {
+            return true;
+          }
+        }
+        return false;
+      }
+  
+      var options = {};
+      function defineOption(name, defaultValue, type, aliases, callback) {
+        if (defaultValue === undefined && !callback) {
+          throw Error('defaultValue is required unless callback is provided');
+        }
+        if (!type) { type = 'string'; }
+        options[name] = {
+          type: type,
+          defaultValue: defaultValue,
+          callback: callback
+        };
+        if (aliases) {
+          for (var i = 0; i < aliases.length; i++) {
+            options[aliases[i]] = options[name];
+          }
+        }
+        if (defaultValue) {
+          setOption(name, defaultValue);
+        }
+      }
+  
+      function setOption(name, value, cm, cfg) {
+        var option = options[name];
+        cfg = cfg || {};
+        var scope = cfg.scope;
+        if (!option) {
+          return new Error('Unknown option: ' + name);
+        }
+        if (option.type == 'boolean') {
+          if (value && value !== true) {
+            return new Error('Invalid argument: ' + name + '=' + value);
+          } else if (value !== false) {
+            // Boolean options are set to true if value is not defined.
+            value = true;
+          }
+        }
+        if (option.callback) {
+          if (scope !== 'local') {
+            option.callback(value, undefined);
+          }
+          if (scope !== 'global' && cm) {
+            option.callback(value, cm);
+          }
+        } else {
+          if (scope !== 'local') {
+            option.value = option.type == 'boolean' ? !!value : value;
+          }
+          if (scope !== 'global' && cm) {
+            cm.state.vim.options[name] = {value: value};
+          }
+        }
+      }
+  
+      function getOption(name, cm, cfg) {
+        var option = options[name];
+        cfg = cfg || {};
+        var scope = cfg.scope;
+        if (!option) {
+          return new Error('Unknown option: ' + name);
+        }
+        if (option.callback) {
+          var local = cm && option.callback(undefined, cm);
+          if (scope !== 'global' && local !== undefined) {
+            return local;
+          }
+          if (scope !== 'local') {
+            return option.callback();
+          }
+          return;
+        } else {
+          var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
+          return (local || (scope !== 'local') && option || {}).value;
+        }
+      }
+  
+      defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
+        // Option is local. Do nothing for global.
+        if (cm === undefined) {
+          return;
+        }
+        // The 'filetype' option proxies to the CodeMirror 'mode' option.
+        if (name === undefined) {
+          var mode = cm.getOption('mode');
+          return mode == 'null' ? '' : mode;
+        } else {
+          var mode = name == '' ? 'null' : name;
+          cm.setOption('mode', mode);
+        }
+      });
+  
+      var createCircularJumpList = function() {
+        var size = 100;
+        var pointer = -1;
+        var head = 0;
+        var tail = 0;
+        var buffer = new Array(size);
+        function add(cm, oldCur, newCur) {
+          var current = pointer % size;
+          var curMark = buffer[current];
+          function useNextSlot(cursor) {
+            var next = ++pointer % size;
+            var trashMark = buffer[next];
+            if (trashMark) {
+              trashMark.clear();
+            }
+            buffer[next] = cm.setBookmark(cursor);
+          }
+          if (curMark) {
+            var markPos = curMark.find();
+            // avoid recording redundant cursor position
+            if (markPos && !cursorEqual(markPos, oldCur)) {
+              useNextSlot(oldCur);
+            }
+          } else {
+            useNextSlot(oldCur);
+          }
+          useNextSlot(newCur);
+          head = pointer;
+          tail = pointer - size + 1;
+          if (tail < 0) {
+            tail = 0;
+          }
+        }
+        function move(cm, offset) {
+          pointer += offset;
+          if (pointer > head) {
+            pointer = head;
+          } else if (pointer < tail) {
+            pointer = tail;
+          }
+          var mark = buffer[(size + pointer) % size];
+          // skip marks that are temporarily removed from text buffer
+          if (mark && !mark.find()) {
+            var inc = offset > 0 ? 1 : -1;
+            var newCur;
+            var oldCur = cm.getCursor();
+            do {
+              pointer += inc;
+              mark = buffer[(size + pointer) % size];
+              // skip marks that are the same as current position
+              if (mark &&
+                  (newCur = mark.find()) &&
+                  !cursorEqual(oldCur, newCur)) {
+                break;
+              }
+            } while (pointer < head && pointer > tail);
+          }
+          return mark;
+        }
+        function find(cm, offset) {
+          var oldPointer = pointer;
+          var mark = move(cm, offset);
+          pointer = oldPointer;
+          return mark && mark.find();
+        }
+        return {
+          cachedCursor: undefined, //used for # and * jumps
+          add: add,
+          find: find,
+          move: move
+        };
+      };
+  
+      // Returns an object to track the changes associated insert mode.  It
+      // clones the object that is passed in, or creates an empty object one if
+      // none is provided.
+      var createInsertModeChanges = function(c) {
+        if (c) {
+          // Copy construction
+          return {
+            changes: c.changes,
+            expectCursorActivityForChange: c.expectCursorActivityForChange
+          };
+        }
+        return {
+          // Change list
+          changes: [],
+          // Set to true on change, false on cursorActivity.
+          expectCursorActivityForChange: false
+        };
+      };
+  
+      function MacroModeState() {
+        this.latestRegister = undefined;
+        this.isPlaying = false;
+        this.isRecording = false;
+        this.replaySearchQueries = [];
+        this.onRecordingDone = undefined;
+        this.lastInsertModeChanges = createInsertModeChanges();
+      }
+      MacroModeState.prototype = {
+        exitMacroRecordMode: function() {
+          var macroModeState = vimGlobalState.macroModeState;
+          if (macroModeState.onRecordingDone) {
+            macroModeState.onRecordingDone(); // close dialog
+          }
+          macroModeState.onRecordingDone = undefined;
+          macroModeState.isRecording = false;
+        },
+        enterMacroRecordMode: function(cm, registerName) {
+          var register =
+              vimGlobalState.registerController.getRegister(registerName);
+          if (register) {
+            register.clear();
+            this.latestRegister = registerName;
+            if (cm.openDialog) {
+              this.onRecordingDone = cm.openDialog(
+                  '(recording)['+registerName+']', null, {bottom:true});
+            }
+            this.isRecording = true;
+          }
+        }
+      };
+  
+      function maybeInitVimState(cm) {
+        if (!cm.state.vim) {
+          // Store instance state in the CodeMirror object.
+          cm.state.vim = {
+            inputState: new InputState(),
+            // Vim's input state that triggered the last edit, used to repeat
+            // motions and operators with '.'.
+            lastEditInputState: undefined,
+            // Vim's action command before the last edit, used to repeat actions
+            // with '.' and insert mode repeat.
+            lastEditActionCommand: undefined,
+            // When using jk for navigation, if you move from a longer line to a
+            // shorter line, the cursor may clip to the end of the shorter line.
+            // If j is pressed again and cursor goes to the next line, the
+            // cursor should go back to its horizontal position on the longer
+            // line if it can. This is to keep track of the horizontal position.
+            lastHPos: -1,
+            // Doing the same with screen-position for gj/gk
+            lastHSPos: -1,
+            // The last motion command run. Cleared if a non-motion command gets
+            // executed in between.
+            lastMotion: null,
+            marks: {},
+            // Mark for rendering fake cursor for visual mode.
+            fakeCursor: null,
+            insertMode: false,
+            // Repeat count for changes made in insert mode, triggered by key
+            // sequences like 3,i. Only exists when insertMode is true.
+            insertModeRepeat: undefined,
+            visualMode: false,
+            // If we are in visual line mode. No effect if visualMode is false.
+            visualLine: false,
+            visualBlock: false,
+            lastSelection: null,
+            lastPastedText: null,
+            sel: {},
+            // Buffer-local/window-local values of vim options.
+            options: {}
+          };
+        }
+        return cm.state.vim;
+      }
+      var vimGlobalState;
+      function resetVimGlobalState() {
+        vimGlobalState = {
+          // The current search query.
+          searchQuery: null,
+          // Whether we are searching backwards.
+          searchIsReversed: false,
+          // Replace part of the last substituted pattern
+          lastSubstituteReplacePart: undefined,
+          jumpList: createCircularJumpList(),
+          macroModeState: new MacroModeState,
+          // Recording latest f, t, F or T motion command.
+          lastCharacterSearch: {increment:0, forward:true, selectedCharacter:''},
+          registerController: new RegisterController({}),
+          // search history buffer
+          searchHistoryController: new HistoryController(),
+          // ex Command history buffer
+          exCommandHistoryController : new HistoryController()
+        };
+        for (var optionName in options) {
+          var option = options[optionName];
+          option.value = option.defaultValue;
+        }
+      }
+  
+      var lastInsertModeKeyTimer;
+      var vimApi= {
+        buildKeyMap: function() {
+          // TODO: Convert keymap into dictionary format for fast lookup.
+        },
+        // Testing hook, though it might be useful to expose the register
+        // controller anyways.
+        getRegisterController: function() {
+          return vimGlobalState.registerController;
+        },
+        // Testing hook.
+        resetVimGlobalState_: resetVimGlobalState,
+  
+        // Testing hook.
+        getVimGlobalState_: function() {
+          return vimGlobalState;
+        },
+  
+        // Testing hook.
+        maybeInitVimState_: maybeInitVimState,
+  
+        suppressErrorLogging: false,
+  
+        InsertModeKey: InsertModeKey,
+        map: function(lhs, rhs, ctx) {
+          // Add user defined key bindings.
+          exCommandDispatcher.map(lhs, rhs, ctx);
+        },
+        unmap: function(lhs, ctx) {
+          exCommandDispatcher.unmap(lhs, ctx);
+        },
+        // Non-recursive map function.
+        // NOTE: This will not create mappings to key maps that aren't present
+        // in the default key map. See TODO at bottom of function.
+        noremap: function(lhs, rhs, ctx) {
+          function toCtxArray(ctx) {
+            return ctx ? [ctx] : ['normal', 'insert', 'visual'];
+          }
+          var ctxsToMap = toCtxArray(ctx);
+          // Look through all actual defaults to find a map candidate.
+          var actualLength = defaultKeymap.length, origLength = defaultKeymapLength;
+          for (var i = actualLength - origLength;
+               i < actualLength && ctxsToMap.length;
+               i++) {
+            var mapping = defaultKeymap[i];
+            // Omit mappings that operate in the wrong context(s) and those of invalid type.
+            if (mapping.keys == rhs &&
+                (!ctx || !mapping.context || mapping.context === ctx) &&
+                mapping.type.substr(0, 2) !== 'ex' &&
+                mapping.type.substr(0, 3) !== 'key') {
+              // Make a shallow copy of the original keymap entry.
+              var newMapping = {};
+              for (var key in mapping) {
+                newMapping[key] = mapping[key];
+              }
+              // Modify it point to the new mapping with the proper context.
+              newMapping.keys = lhs;
+              if (ctx && !newMapping.context) {
+                newMapping.context = ctx;
+              }
+              // Add it to the keymap with a higher priority than the original.
+              this._mapCommand(newMapping);
+              // Record the mapped contexts as complete.
+              var mappedCtxs = toCtxArray(mapping.context);
+              ctxsToMap = ctxsToMap.filter(function(el) { return mappedCtxs.indexOf(el) === -1; });
+            }
+          }
+          // TODO: Create non-recursive keyToKey mappings for the unmapped contexts once those exist.
+        },
+        // Remove all user-defined mappings for the provided context.
+        mapclear: function(ctx) {
+          // Partition the existing keymap into user-defined and true defaults.
+          var actualLength = defaultKeymap.length,
+              origLength = defaultKeymapLength;
+          var userKeymap = defaultKeymap.slice(0, actualLength - origLength);
+          defaultKeymap = defaultKeymap.slice(actualLength - origLength);
+          if (ctx) {
+            // If a specific context is being cleared, we need to keep mappings
+            // from all other contexts.
+            for (var i = userKeymap.length - 1; i >= 0; i--) {
+              var mapping = userKeymap[i];
+              if (ctx !== mapping.context) {
+                if (mapping.context) {
+                  this._mapCommand(mapping);
+                } else {
+                  // `mapping` applies to all contexts so create keymap copies
+                  // for each context except the one being cleared.
+                  var contexts = ['normal', 'insert', 'visual'];
+                  for (var j in contexts) {
+                    if (contexts[j] !== ctx) {
+                      var newMapping = {};
+                      for (var key in mapping) {
+                        newMapping[key] = mapping[key];
+                      }
+                      newMapping.context = contexts[j];
+                      this._mapCommand(newMapping);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        // TODO: Expose setOption and getOption as instance methods. Need to decide how to namespace
+        // them, or somehow make them work with the existing CodeMirror setOption/getOption API.
+        setOption: setOption,
+        getOption: getOption,
+        defineOption: defineOption,
+        defineEx: function(name, prefix, func){
+          if (!prefix) {
+            prefix = name;
+          } else if (name.indexOf(prefix) !== 0) {
+            throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
+          }
+          exCommands[name]=func;
+          exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
+        },
+        handleKey: function (cm, key, origin) {
+          var command = this.findKey(cm, key, origin);
+          if (typeof command === 'function') {
+            return command();
+          }
+        },
+        /**
+         * This is the outermost function called by CodeMirror, after keys have
+         * been mapped to their Vim equivalents.
+         *
+         * Finds a command based on the key (and cached keys if there is a
+         * multi-key sequence). Returns `undefined` if no key is matched, a noop
+         * function if a partial match is found (multi-key), and a function to
+         * execute the bound command if a a key is matched. The function always
+         * returns true.
+         */
+        findKey: function(cm, key, origin) {
+          var vim = maybeInitVimState(cm);
+          function handleMacroRecording() {
+            var macroModeState = vimGlobalState.macroModeState;
+            if (macroModeState.isRecording) {
+              if (key == 'q') {
+                macroModeState.exitMacroRecordMode();
+                clearInputState(cm);
+                return true;
+              }
+              if (origin != 'mapping') {
+                logKey(macroModeState, key);
+              }
+            }
+          }
+          function handleEsc() {
+            if (key == '<Esc>') {
+              // Clear input state and get back to normal mode.
+              clearInputState(cm);
+              if (vim.visualMode) {
+                exitVisualMode(cm);
+              } else if (vim.insertMode) {
+                exitInsertMode(cm);
+              }
+              return true;
+            }
+          }
+          function doKeyToKey(keys) {
+            // TODO: prevent infinite recursion.
+            var match;
+            while (keys) {
+              // Pull off one command key, which is either a single character
+              // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
+              match = (/<\w+-.+?>|<\w+>|./).exec(keys);
+              key = match[0];
+              keys = keys.substring(match.index + key.length);
+              CodeMirror.Vim.handleKey(cm, key, 'mapping');
+            }
+          }
+  
+          function handleKeyInsertMode() {
+            if (handleEsc()) { return true; }
+            var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
+            var keysAreChars = key.length == 1;
+            var match = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
+            // Need to check all key substrings in insert mode.
+            while (keys.length > 1 && match.type != 'full') {
+              var keys = vim.inputState.keyBuffer = keys.slice(1);
+              var thisMatch = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
+              if (thisMatch.type != 'none') { match = thisMatch; }
+            }
+            if (match.type == 'none') { clearInputState(cm); return false; }
+            else if (match.type == 'partial') {
+              if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
+              lastInsertModeKeyTimer = window.setTimeout(
+                function() { if (vim.insertMode && vim.inputState.keyBuffer) { clearInputState(cm); } },
+                getOption('insertModeEscKeysTimeout'));
+              return !keysAreChars;
+            }
+  
+            if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
+            if (keysAreChars) {
+              var selections = cm.listSelections();
+              for (var i = 0; i < selections.length; i++) {
+                var here = selections[i].head;
+                cm.replaceRange('', offsetCursor(here, 0, -(keys.length - 1)), here, '+input');
+              }
+              vimGlobalState.macroModeState.lastInsertModeChanges.changes.pop();
+            }
+            clearInputState(cm);
+            return match.command;
+          }
+  
+          function handleKeyNonInsertMode() {
+            if (handleMacroRecording() || handleEsc()) { return true; }
+  
+            var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
+            if (/^[1-9]\d*$/.test(keys)) { return true; }
+  
+            var keysMatcher = /^(\d*)(.*)$/.exec(keys);
+            if (!keysMatcher) { clearInputState(cm); return false; }
+            var context = vim.visualMode ? 'visual' :
+                                           'normal';
+            var match = commandDispatcher.matchCommand(keysMatcher[2] || keysMatcher[1], defaultKeymap, vim.inputState, context);
+            if (match.type == 'none') { clearInputState(cm); return false; }
+            else if (match.type == 'partial') { return true; }
+  
+            vim.inputState.keyBuffer = '';
+            var keysMatcher = /^(\d*)(.*)$/.exec(keys);
+            if (keysMatcher[1] && keysMatcher[1] != '0') {
+              vim.inputState.pushRepeatDigit(keysMatcher[1]);
+            }
+            return match.command;
+          }
+  
+          var command;
+          if (vim.insertMode) { command = handleKeyInsertMode(); }
+          else { command = handleKeyNonInsertMode(); }
+          if (command === false) {
+            return !vim.insertMode && key.length === 1 ? function() { return true; } : undefined;
+          } else if (command === true) {
+            // TODO: Look into using CodeMirror's multi-key handling.
+            // Return no-op since we are caching the key. Counts as handled, but
+            // don't want act on it just yet.
+            return function() { return true; };
+          } else {
+            return function() {
+              return cm.operation(function() {
+                cm.curOp.isVimOp = true;
+                try {
+                  if (command.type == 'keyToKey') {
+                    doKeyToKey(command.toKeys);
+                  } else {
+                    commandDispatcher.processCommand(cm, vim, command);
+                  }
+                } catch (e) {
+                  // clear VIM state in case it's in a bad state.
+                  cm.state.vim = undefined;
+                  maybeInitVimState(cm);
+                  if (!CodeMirror.Vim.suppressErrorLogging) {
+                    console['log'](e);
+                  }
+                  throw e;
+                }
+                return true;
+              });
+            };
+          }
+        },
+        handleEx: function(cm, input) {
+          exCommandDispatcher.processCommand(cm, input);
+        },
+  
+        defineMotion: defineMotion,
+        defineAction: defineAction,
+        defineOperator: defineOperator,
+        mapCommand: mapCommand,
+        _mapCommand: _mapCommand,
+  
+        defineRegister: defineRegister,
+  
+        exitVisualMode: exitVisualMode,
+        exitInsertMode: exitInsertMode
+      };
+  
+      // Represents the current input state.
+      function InputState() {
+        this.prefixRepeat = [];
+        this.motionRepeat = [];
+  
+        this.operator = null;
+        this.operatorArgs = null;
+        this.motion = null;
+        this.motionArgs = null;
+        this.keyBuffer = []; // For matching multi-key commands.
+        this.registerName = null; // Defaults to the unnamed register.
+      }
+      InputState.prototype.pushRepeatDigit = function(n) {
+        if (!this.operator) {
+          this.prefixRepeat = this.prefixRepeat.concat(n);
+        } else {
+          this.motionRepeat = this.motionRepeat.concat(n);
+        }
+      };
+      InputState.prototype.getRepeat = function() {
+        var repeat = 0;
+        if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
+          repeat = 1;
+          if (this.prefixRepeat.length > 0) {
+            repeat *= parseInt(this.prefixRepeat.join(''), 10);
+          }
+          if (this.motionRepeat.length > 0) {
+            repeat *= parseInt(this.motionRepeat.join(''), 10);
+          }
+        }
+        return repeat;
+      };
+  
+      function clearInputState(cm, reason) {
+        cm.state.vim.inputState = new InputState();
+        CodeMirror.signal(cm, 'vim-command-done', reason);
+      }
+  
+      /*
+       * Register stores information about copy and paste registers.  Besides
+       * text, a register must store whether it is linewise (i.e., when it is
+       * pasted, should it insert itself into a new line, or should the text be
+       * inserted at the cursor position.)
+       */
+      function Register(text, linewise, blockwise) {
+        this.clear();
+        this.keyBuffer = [text || ''];
+        this.insertModeChanges = [];
+        this.searchQueries = [];
+        this.linewise = !!linewise;
+        this.blockwise = !!blockwise;
+      }
+      Register.prototype = {
+        setText: function(text, linewise, blockwise) {
+          this.keyBuffer = [text || ''];
+          this.linewise = !!linewise;
+          this.blockwise = !!blockwise;
+        },
+        pushText: function(text, linewise) {
+          // if this register has ever been set to linewise, use linewise.
+          if (linewise) {
+            if (!this.linewise) {
+              this.keyBuffer.push('\n');
+            }
+            this.linewise = true;
+          }
+          this.keyBuffer.push(text);
+        },
+        pushInsertModeChanges: function(changes) {
+          this.insertModeChanges.push(createInsertModeChanges(changes));
+        },
+        pushSearchQuery: function(query) {
+          this.searchQueries.push(query);
+        },
+        clear: function() {
+          this.keyBuffer = [];
+          this.insertModeChanges = [];
+          this.searchQueries = [];
+          this.linewise = false;
+        },
+        toString: function() {
+          return this.keyBuffer.join('');
+        }
+      };
+  
+      /**
+       * Defines an external register.
+       *
+       * The name should be a single character that will be used to reference the register.
+       * The register should support setText, pushText, clear, and toString(). See Register
+       * for a reference implementation.
+       */
+      function defineRegister(name, register) {
+        var registers = vimGlobalState.registerController.registers;
+        if (!name || name.length != 1) {
+          throw Error('Register name must be 1 character');
+        }
+        if (registers[name]) {
+          throw Error('Register already defined ' + name);
+        }
+        registers[name] = register;
+        validRegisters.push(name);
+      }
+  
+      /*
+       * vim registers allow you to keep many independent copy and paste buffers.
+       * See http://usevim.com/2012/04/13/registers/ for an introduction.
+       *
+       * RegisterController keeps the state of all the registers.  An initial
+       * state may be passed in.  The unnamed register '"' will always be
+       * overridden.
+       */
+      function RegisterController(registers) {
+        this.registers = registers;
+        this.unnamedRegister = registers['"'] = new Register();
+        registers['.'] = new Register();
+        registers[':'] = new Register();
+        registers['/'] = new Register();
+      }
+      RegisterController.prototype = {
+        pushText: function(registerName, operator, text, linewise, blockwise) {
+          if (linewise && text.charAt(text.length - 1) !== '\n'){
+            text += '\n';
+          }
+          // Lowercase and uppercase registers refer to the same register.
+          // Uppercase just means append.
+          var register = this.isValidRegister(registerName) ?
+              this.getRegister(registerName) : null;
+          // if no register/an invalid register was specified, things go to the
+          // default registers
+          if (!register) {
+            switch (operator) {
+              case 'yank':
+                // The 0 register contains the text from the most recent yank.
+                this.registers['0'] = new Register(text, linewise, blockwise);
+                break;
+              case 'delete':
+              case 'change':
+                if (text.indexOf('\n') == -1) {
+                  // Delete less than 1 line. Update the small delete register.
+                  this.registers['-'] = new Register(text, linewise);
+                } else {
+                  // Shift down the contents of the numbered registers and put the
+                  // deleted text into register 1.
+                  this.shiftNumericRegisters_();
+                  this.registers['1'] = new Register(text, linewise);
+                }
+                break;
+            }
+            // Make sure the unnamed register is set to what just happened
+            this.unnamedRegister.setText(text, linewise, blockwise);
+            return;
+          }
+  
+          // If we've gotten to this point, we've actually specified a register
+          var append = isUpperCase(registerName);
+          if (append) {
+            register.pushText(text, linewise);
+          } else {
+            register.setText(text, linewise, blockwise);
+          }
+          // The unnamed register always has the same value as the last used
+          // register.
+          this.unnamedRegister.setText(register.toString(), linewise);
+        },
+        // Gets the register named @name.  If one of @name doesn't already exist,
+        // create it.  If @name is invalid, return the unnamedRegister.
+        getRegister: function(name) {
+          if (!this.isValidRegister(name)) {
+            return this.unnamedRegister;
+          }
+          name = name.toLowerCase();
+          if (!this.registers[name]) {
+            this.registers[name] = new Register();
+          }
+          return this.registers[name];
+        },
+        isValidRegister: function(name) {
+          return name && inArray(name, validRegisters);
+        },
+        shiftNumericRegisters_: function() {
+          for (var i = 9; i >= 2; i--) {
+            this.registers[i] = this.getRegister('' + (i - 1));
+          }
+        }
+      };
+      function HistoryController() {
+          this.historyBuffer = [];
+          this.iterator = 0;
+          this.initialPrefix = null;
+      }
+      HistoryController.prototype = {
+        // the input argument here acts a user entered prefix for a small time
+        // until we start autocompletion in which case it is the autocompleted.
+        nextMatch: function (input, up) {
+          var historyBuffer = this.historyBuffer;
+          var dir = up ? -1 : 1;
+          if (this.initialPrefix === null) this.initialPrefix = input;
+          for (var i = this.iterator + dir; up ? i >= 0 : i < historyBuffer.length; i+= dir) {
+            var element = historyBuffer[i];
+            for (var j = 0; j <= element.length; j++) {
+              if (this.initialPrefix == element.substring(0, j)) {
+                this.iterator = i;
+                return element;
+              }
+            }
+          }
+          // should return the user input in case we reach the end of buffer.
+          if (i >= historyBuffer.length) {
+            this.iterator = historyBuffer.length;
+            return this.initialPrefix;
+          }
+          // return the last autocompleted query or exCommand as it is.
+          if (i < 0 ) return input;
+        },
+        pushInput: function(input) {
+          var index = this.historyBuffer.indexOf(input);
+          if (index > -1) this.historyBuffer.splice(index, 1);
+          if (input.length) this.historyBuffer.push(input);
+        },
+        reset: function() {
+          this.initialPrefix = null;
+          this.iterator = this.historyBuffer.length;
+        }
+      };
+      var commandDispatcher = {
+        matchCommand: function(keys, keyMap, inputState, context) {
+          var matches = commandMatches(keys, keyMap, context, inputState);
+          if (!matches.full && !matches.partial) {
+            return {type: 'none'};
+          } else if (!matches.full && matches.partial) {
+            return {type: 'partial'};
+          }
+  
+          var bestMatch;
+          for (var i = 0; i < matches.full.length; i++) {
+            var match = matches.full[i];
+            if (!bestMatch) {
+              bestMatch = match;
+            }
+          }
+          if (bestMatch.keys.slice(-11) == '<character>') {
+            var character = lastChar(keys);
+            if (!character) return {type: 'none'};
+            inputState.selectedCharacter = character;
+          }
+          return {type: 'full', command: bestMatch};
+        },
+        processCommand: function(cm, vim, command) {
+          vim.inputState.repeatOverride = command.repeatOverride;
+          switch (command.type) {
+            case 'motion':
+              this.processMotion(cm, vim, command);
+              break;
+            case 'operator':
+              this.processOperator(cm, vim, command);
+              break;
+            case 'operatorMotion':
+              this.processOperatorMotion(cm, vim, command);
+              break;
+            case 'action':
+              this.processAction(cm, vim, command);
+              break;
+            case 'search':
+              this.processSearch(cm, vim, command);
+              break;
+            case 'ex':
+            case 'keyToEx':
+              this.processEx(cm, vim, command);
+              break;
+            default:
+              break;
+          }
+        },
+        processMotion: function(cm, vim, command) {
+          vim.inputState.motion = command.motion;
+          vim.inputState.motionArgs = copyArgs(command.motionArgs);
+          this.evalInput(cm, vim);
+        },
+        processOperator: function(cm, vim, command) {
+          var inputState = vim.inputState;
+          if (inputState.operator) {
+            if (inputState.operator == command.operator) {
+              // Typing an operator twice like 'dd' makes the operator operate
+              // linewise
+              inputState.motion = 'expandToLine';
+              inputState.motionArgs = { linewise: true };
+              this.evalInput(cm, vim);
+              return;
+            } else {
+              // 2 different operators in a row doesn't make sense.
+              clearInputState(cm);
+            }
+          }
+          inputState.operator = command.operator;
+          inputState.operatorArgs = copyArgs(command.operatorArgs);
+          if (command.exitVisualBlock) {
+              vim.visualBlock = false;
+              updateCmSelection(cm);
+          }
+          if (vim.visualMode) {
+            // Operating on a selection in visual mode. We don't need a motion.
+            this.evalInput(cm, vim);
+          }
+        },
+        processOperatorMotion: function(cm, vim, command) {
+          var visualMode = vim.visualMode;
+          var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
+          if (operatorMotionArgs) {
+            // Operator motions may have special behavior in visual mode.
+            if (visualMode && operatorMotionArgs.visualLine) {
+              vim.visualLine = true;
+            }
+          }
+          this.processOperator(cm, vim, command);
+          if (!visualMode) {
+            this.processMotion(cm, vim, command);
+          }
+        },
+        processAction: function(cm, vim, command) {
+          var inputState = vim.inputState;
+          var repeat = inputState.getRepeat();
+          var repeatIsExplicit = !!repeat;
+          var actionArgs = copyArgs(command.actionArgs) || {};
+          if (inputState.selectedCharacter) {
+            actionArgs.selectedCharacter = inputState.selectedCharacter;
+          }
+          // Actions may or may not have motions and operators. Do these first.
+          if (command.operator) {
+            this.processOperator(cm, vim, command);
+          }
+          if (command.motion) {
+            this.processMotion(cm, vim, command);
+          }
+          if (command.motion || command.operator) {
+            this.evalInput(cm, vim);
+          }
+          actionArgs.repeat = repeat || 1;
+          actionArgs.repeatIsExplicit = repeatIsExplicit;
+          actionArgs.registerName = inputState.registerName;
+          clearInputState(cm);
+          vim.lastMotion = null;
+          if (command.isEdit) {
+            this.recordLastEdit(vim, inputState, command);
+          }
+          actions[command.action](cm, actionArgs, vim);
+        },
+        processSearch: function(cm, vim, command) {
+          if (!cm.getSearchCursor) {
+            // Search depends on SearchCursor.
+            return;
+          }
+          var forward = command.searchArgs.forward;
+          var wholeWordOnly = command.searchArgs.wholeWordOnly;
+          getSearchState(cm).setReversed(!forward);
+          var promptPrefix = (forward) ? '/' : '?';
+          var originalQuery = getSearchState(cm).getQuery();
+          var originalScrollPos = cm.getScrollInfo();
+          function handleQuery(query, ignoreCase, smartCase) {
+            vimGlobalState.searchHistoryController.pushInput(query);
+            vimGlobalState.searchHistoryController.reset();
+            try {
+              updateSearchQuery(cm, query, ignoreCase, smartCase);
+            } catch (e) {
+              showConfirm(cm, 'Invalid regex: ' + query);
+              clearInputState(cm);
+              return;
+            }
+            commandDispatcher.processMotion(cm, vim, {
+              type: 'motion',
+              motion: 'findNext',
+              motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
+            });
+          }
+          function onPromptClose(query) {
+            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+            handleQuery(query, true /** ignoreCase */, true /** smartCase */);
+            var macroModeState = vimGlobalState.macroModeState;
+            if (macroModeState.isRecording) {
+              logSearchQuery(macroModeState, query);
+            }
+          }
+          function onPromptKeyUp(e, query, close) {
+            var keyName = CodeMirror.keyName(e), up, offset;
+            if (keyName == 'Up' || keyName == 'Down') {
+              up = keyName == 'Up' ? true : false;
+              offset = e.target ? e.target.selectionEnd : 0;
+              query = vimGlobalState.searchHistoryController.nextMatch(query, up) || '';
+              close(query);
+              if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
+            } else {
+              if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
+                vimGlobalState.searchHistoryController.reset();
+            }
+            var parsedQuery;
+            try {
+              parsedQuery = updateSearchQuery(cm, query,
+                  true /** ignoreCase */, true /** smartCase */);
+            } catch (e) {
+              // Swallow bad regexes for incremental search.
+            }
+            if (parsedQuery) {
+              cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
+            } else {
+              clearSearchHighlight(cm);
+              cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+            }
+          }
+          function onPromptKeyDown(e, query, close) {
+            var keyName = CodeMirror.keyName(e);
+            if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+                (keyName == 'Backspace' && query == '')) {
+              vimGlobalState.searchHistoryController.pushInput(query);
+              vimGlobalState.searchHistoryController.reset();
+              updateSearchQuery(cm, originalQuery);
+              clearSearchHighlight(cm);
+              cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+              CodeMirror.e_stop(e);
+              clearInputState(cm);
+              close();
+              cm.focus();
+            } else if (keyName == 'Up' || keyName == 'Down') {
+              CodeMirror.e_stop(e);
+            } else if (keyName == 'Ctrl-U') {
+              // Ctrl-U clears input.
+              CodeMirror.e_stop(e);
+              close('');
+            }
+          }
+          switch (command.searchArgs.querySrc) {
+            case 'prompt':
+              var macroModeState = vimGlobalState.macroModeState;
+              if (macroModeState.isPlaying) {
+                var query = macroModeState.replaySearchQueries.shift();
+                handleQuery(query, true /** ignoreCase */, false /** smartCase */);
+              } else {
+                showPrompt(cm, {
+                    onClose: onPromptClose,
+                    prefix: promptPrefix,
+                    desc: searchPromptDesc,
+                    onKeyUp: onPromptKeyUp,
+                    onKeyDown: onPromptKeyDown
+                });
+              }
+              break;
+            case 'wordUnderCursor':
+              var word = expandWordUnderCursor(cm, false /** inclusive */,
+                  true /** forward */, false /** bigWord */,
+                  true /** noSymbol */);
+              var isKeyword = true;
+              if (!word) {
+                word = expandWordUnderCursor(cm, false /** inclusive */,
+                    true /** forward */, false /** bigWord */,
+                    false /** noSymbol */);
+                isKeyword = false;
+              }
+              if (!word) {
+                return;
+              }
+              var query = cm.getLine(word.start.line).substring(word.start.ch,
+                  word.end.ch);
+              if (isKeyword && wholeWordOnly) {
+                  query = '\\b' + query + '\\b';
+              } else {
+                query = escapeRegex(query);
+              }
+  
+              // cachedCursor is used to save the old position of the cursor
+              // when * or # causes vim to seek for the nearest word and shift
+              // the cursor before entering the motion.
+              vimGlobalState.jumpList.cachedCursor = cm.getCursor();
+              cm.setCursor(word.start);
+  
+              handleQuery(query, true /** ignoreCase */, false /** smartCase */);
+              break;
+          }
+        },
+        processEx: function(cm, vim, command) {
+          function onPromptClose(input) {
+            // Give the prompt some time to close so that if processCommand shows
+            // an error, the elements don't overlap.
+            vimGlobalState.exCommandHistoryController.pushInput(input);
+            vimGlobalState.exCommandHistoryController.reset();
+            exCommandDispatcher.processCommand(cm, input);
+          }
+          function onPromptKeyDown(e, input, close) {
+            var keyName = CodeMirror.keyName(e), up, offset;
+            if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+                (keyName == 'Backspace' && input == '')) {
+              vimGlobalState.exCommandHistoryController.pushInput(input);
+              vimGlobalState.exCommandHistoryController.reset();
+              CodeMirror.e_stop(e);
+              clearInputState(cm);
+              close();
+              cm.focus();
+            }
+            if (keyName == 'Up' || keyName == 'Down') {
+              CodeMirror.e_stop(e);
+              up = keyName == 'Up' ? true : false;
+              offset = e.target ? e.target.selectionEnd : 0;
+              input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
+              close(input);
+              if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
+            } else if (keyName == 'Ctrl-U') {
+              // Ctrl-U clears input.
+              CodeMirror.e_stop(e);
+              close('');
+            } else {
+              if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
+                vimGlobalState.exCommandHistoryController.reset();
+            }
+          }
+          if (command.type == 'keyToEx') {
+            // Handle user defined Ex to Ex mappings
+            exCommandDispatcher.processCommand(cm, command.exArgs.input);
+          } else {
+            if (vim.visualMode) {
+              showPrompt(cm, { onClose: onPromptClose, prefix: ':', value: '\'<,\'>',
+                  onKeyDown: onPromptKeyDown, selectValueOnOpen: false});
+            } else {
+              showPrompt(cm, { onClose: onPromptClose, prefix: ':',
+                  onKeyDown: onPromptKeyDown});
+            }
+          }
+        },
+        evalInput: function(cm, vim) {
+          // If the motion command is set, execute both the operator and motion.
+          // Otherwise return.
+          var inputState = vim.inputState;
+          var motion = inputState.motion;
+          var motionArgs = inputState.motionArgs || {};
+          var operator = inputState.operator;
+          var operatorArgs = inputState.operatorArgs || {};
+          var registerName = inputState.registerName;
+          var sel = vim.sel;
+          // TODO: Make sure cm and vim selections are identical outside visual mode.
+          var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
+          var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
+          var oldHead = copyCursor(origHead);
+          var oldAnchor = copyCursor(origAnchor);
+          var newHead, newAnchor;
+          var repeat;
+          if (operator) {
+            this.recordLastEdit(vim, inputState);
+          }
+          if (inputState.repeatOverride !== undefined) {
+            // If repeatOverride is specified, that takes precedence over the
+            // input state's repeat. Used by Ex mode and can be user defined.
+            repeat = inputState.repeatOverride;
+          } else {
+            repeat = inputState.getRepeat();
+          }
+          if (repeat > 0 && motionArgs.explicitRepeat) {
+            motionArgs.repeatIsExplicit = true;
+          } else if (motionArgs.noRepeat ||
+              (!motionArgs.explicitRepeat && repeat === 0)) {
+            repeat = 1;
+            motionArgs.repeatIsExplicit = false;
+          }
+          if (inputState.selectedCharacter) {
+            // If there is a character input, stick it in all of the arg arrays.
+            motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
+                inputState.selectedCharacter;
+          }
+          motionArgs.repeat = repeat;
+          clearInputState(cm);
+          if (motion) {
+            var motionResult = motions[motion](cm, origHead, motionArgs, vim);
+            vim.lastMotion = motions[motion];
+            if (!motionResult) {
+              return;
+            }
+            if (motionArgs.toJumplist) {
+              var jumpList = vimGlobalState.jumpList;
+              // if the current motion is # or *, use cachedCursor
+              var cachedCursor = jumpList.cachedCursor;
+              if (cachedCursor) {
+                recordJumpPosition(cm, cachedCursor, motionResult);
+                delete jumpList.cachedCursor;
+              } else {
+                recordJumpPosition(cm, origHead, motionResult);
+              }
+            }
+            if (motionResult instanceof Array) {
+              newAnchor = motionResult[0];
+              newHead = motionResult[1];
+            } else {
+              newHead = motionResult;
+            }
+            // TODO: Handle null returns from motion commands better.
+            if (!newHead) {
+              newHead = copyCursor(origHead);
+            }
+            if (vim.visualMode) {
+              if (!(vim.visualBlock && newHead.ch === Infinity)) {
+                newHead = clipCursorToContent(cm, newHead);
+              }
+              if (newAnchor) {
+                newAnchor = clipCursorToContent(cm, newAnchor);
+              }
+              newAnchor = newAnchor || oldAnchor;
+              sel.anchor = newAnchor;
+              sel.head = newHead;
+              updateCmSelection(cm);
+              updateMark(cm, vim, '<',
+                  cursorIsBefore(newAnchor, newHead) ? newAnchor
+                      : newHead);
+              updateMark(cm, vim, '>',
+                  cursorIsBefore(newAnchor, newHead) ? newHead
+                      : newAnchor);
+            } else if (!operator) {
+              newHead = clipCursorToContent(cm, newHead);
+              cm.setCursor(newHead.line, newHead.ch);
+            }
+          }
+          if (operator) {
+            if (operatorArgs.lastSel) {
+              // Replaying a visual mode operation
+              newAnchor = oldAnchor;
+              var lastSel = operatorArgs.lastSel;
+              var lineOffset = Math.abs(lastSel.head.line - lastSel.anchor.line);
+              var chOffset = Math.abs(lastSel.head.ch - lastSel.anchor.ch);
+              if (lastSel.visualLine) {
+                // Linewise Visual mode: The same number of lines.
+                newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
+              } else if (lastSel.visualBlock) {
+                // Blockwise Visual mode: The same number of lines and columns.
+                newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch + chOffset);
+              } else if (lastSel.head.line == lastSel.anchor.line) {
+                // Normal Visual mode within one line: The same number of characters.
+                newHead = Pos(oldAnchor.line, oldAnchor.ch + chOffset);
+              } else {
+                // Normal Visual mode with several lines: The same number of lines, in the
+                // last line the same number of characters as in the last line the last time.
+                newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
+              }
+              vim.visualMode = true;
+              vim.visualLine = lastSel.visualLine;
+              vim.visualBlock = lastSel.visualBlock;
+              sel = vim.sel = {
+                anchor: newAnchor,
+                head: newHead
+              };
+              updateCmSelection(cm);
+            } else if (vim.visualMode) {
+              operatorArgs.lastSel = {
+                anchor: copyCursor(sel.anchor),
+                head: copyCursor(sel.head),
+                visualBlock: vim.visualBlock,
+                visualLine: vim.visualLine
+              };
+            }
+            var curStart, curEnd, linewise, mode;
+            var cmSel;
+            if (vim.visualMode) {
+              // Init visual op
+              curStart = cursorMin(sel.head, sel.anchor);
+              curEnd = cursorMax(sel.head, sel.anchor);
+              linewise = vim.visualLine || operatorArgs.linewise;
+              mode = vim.visualBlock ? 'block' :
+                     linewise ? 'line' :
+                     'char';
+              cmSel = makeCmSelection(cm, {
+                anchor: curStart,
+                head: curEnd
+              }, mode);
+              if (linewise) {
+                var ranges = cmSel.ranges;
+                if (mode == 'block') {
+                  // Linewise operators in visual block mode extend to end of line
+                  for (var i = 0; i < ranges.length; i++) {
+                    ranges[i].head.ch = lineLength(cm, ranges[i].head.line);
+                  }
+                } else if (mode == 'line') {
+                  ranges[0].head = Pos(ranges[0].head.line + 1, 0);
+                }
+              }
+            } else {
+              // Init motion op
+              curStart = copyCursor(newAnchor || oldAnchor);
+              curEnd = copyCursor(newHead || oldHead);
+              if (cursorIsBefore(curEnd, curStart)) {
+                var tmp = curStart;
+                curStart = curEnd;
+                curEnd = tmp;
+              }
+              linewise = motionArgs.linewise || operatorArgs.linewise;
+              if (linewise) {
+                // Expand selection to entire line.
+                expandSelectionToLine(cm, curStart, curEnd);
+              } else if (motionArgs.forward) {
+                // Clip to trailing newlines only if the motion goes forward.
+                clipToLine(cm, curStart, curEnd);
+              }
+              mode = 'char';
+              var exclusive = !motionArgs.inclusive || linewise;
+              cmSel = makeCmSelection(cm, {
+                anchor: curStart,
+                head: curEnd
+              }, mode, exclusive);
+            }
+            cm.setSelections(cmSel.ranges, cmSel.primary);
+            vim.lastMotion = null;
+            operatorArgs.repeat = repeat; // For indent in visual mode.
+            operatorArgs.registerName = registerName;
+            // Keep track of linewise as it affects how paste and change behave.
+            operatorArgs.linewise = linewise;
+            var operatorMoveTo = operators[operator](
+              cm, operatorArgs, cmSel.ranges, oldAnchor, newHead);
+            if (vim.visualMode) {
+              exitVisualMode(cm, operatorMoveTo != null);
+            }
+            if (operatorMoveTo) {
+              cm.setCursor(operatorMoveTo);
+            }
+          }
+        },
+        recordLastEdit: function(vim, inputState, actionCommand) {
+          var macroModeState = vimGlobalState.macroModeState;
+          if (macroModeState.isPlaying) { return; }
+          vim.lastEditInputState = inputState;
+          vim.lastEditActionCommand = actionCommand;
+          macroModeState.lastInsertModeChanges.changes = [];
+          macroModeState.lastInsertModeChanges.expectCursorActivityForChange = false;
+          macroModeState.lastInsertModeChanges.visualBlock = vim.visualBlock ? vim.sel.head.line - vim.sel.anchor.line : 0;
+        }
+      };
+  
+      /**
+       * typedef {Object{line:number,ch:number}} Cursor An object containing the
+       *     position of the cursor.
+       */
+      // All of the functions below return Cursor objects.
+      var motions = {
+        moveToTopLine: function(cm, _head, motionArgs) {
+          var line = getUserVisibleLines(cm).top + motionArgs.repeat -1;
+          return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+        },
+        moveToMiddleLine: function(cm) {
+          var range = getUserVisibleLines(cm);
+          var line = Math.floor((range.top + range.bottom) * 0.5);
+          return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+        },
+        moveToBottomLine: function(cm, _head, motionArgs) {
+          var line = getUserVisibleLines(cm).bottom - motionArgs.repeat +1;
+          return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+        },
+        expandToLine: function(_cm, head, motionArgs) {
+          // Expands forward to end of line, and then to next line if repeat is
+          // >1. Does not handle backward motion!
+          var cur = head;
+          return Pos(cur.line + motionArgs.repeat - 1, Infinity);
+        },
+        findNext: function(cm, _head, motionArgs) {
+          var state = getSearchState(cm);
+          var query = state.getQuery();
+          if (!query) {
+            return;
+          }
+          var prev = !motionArgs.forward;
+          // If search is initiated with ? instead of /, negate direction.
+          prev = (state.isReversed()) ? !prev : prev;
+          highlightSearchMatches(cm, query);
+          return findNext(cm, prev/** prev */, query, motionArgs.repeat);
+        },
+        goToMark: function(cm, _head, motionArgs, vim) {
+          var pos = getMarkPos(cm, vim, motionArgs.selectedCharacter);
+          if (pos) {
+            return motionArgs.linewise ? { line: pos.line, ch: findFirstNonWhiteSpaceCharacter(cm.getLine(pos.line)) } : pos;
+          }
+          return null;
+        },
+        moveToOtherHighlightedEnd: function(cm, _head, motionArgs, vim) {
+          if (vim.visualBlock && motionArgs.sameLine) {
+            var sel = vim.sel;
+            return [
+              clipCursorToContent(cm, Pos(sel.anchor.line, sel.head.ch)),
+              clipCursorToContent(cm, Pos(sel.head.line, sel.anchor.ch))
+            ];
+          } else {
+            return ([vim.sel.head, vim.sel.anchor]);
+          }
+        },
+        jumpToMark: function(cm, head, motionArgs, vim) {
+          var best = head;
+          for (var i = 0; i < motionArgs.repeat; i++) {
+            var cursor = best;
+            for (var key in vim.marks) {
+              if (!isLowerCase(key)) {
+                continue;
+              }
+              var mark = vim.marks[key].find();
+              var isWrongDirection = (motionArgs.forward) ?
+                cursorIsBefore(mark, cursor) : cursorIsBefore(cursor, mark);
+  
+              if (isWrongDirection) {
+                continue;
+              }
+              if (motionArgs.linewise && (mark.line == cursor.line)) {
+                continue;
+              }
+  
+              var equal = cursorEqual(cursor, best);
+              var between = (motionArgs.forward) ?
+                cursorIsBetween(cursor, mark, best) :
+                cursorIsBetween(best, mark, cursor);
+  
+              if (equal || between) {
+                best = mark;
+              }
+            }
+          }
+  
+          if (motionArgs.linewise) {
+            // Vim places the cursor on the first non-whitespace character of
+            // the line if there is one, else it places the cursor at the end
+            // of the line, regardless of whether a mark was found.
+            best = Pos(best.line, findFirstNonWhiteSpaceCharacter(cm.getLine(best.line)));
+          }
+          return best;
+        },
+        moveByCharacters: function(_cm, head, motionArgs) {
+          var cur = head;
+          var repeat = motionArgs.repeat;
+          var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
+          return Pos(cur.line, ch);
+        },
+        moveByLines: function(cm, head, motionArgs, vim) {
+          var cur = head;
+          var endCh = cur.ch;
+          // Depending what our last motion was, we may want to do different
+          // things. If our last motion was moving vertically, we want to
+          // preserve the HPos from our last horizontal move.  If our last motion
+          // was going to the end of a line, moving vertically we should go to
+          // the end of the line, etc.
+          switch (vim.lastMotion) {
+            case this.moveByLines:
+            case this.moveByDisplayLines:
+            case this.moveByScroll:
+            case this.moveToColumn:
+            case this.moveToEol:
+              endCh = vim.lastHPos;
+              break;
+            default:
+              vim.lastHPos = endCh;
+          }
+          var repeat = motionArgs.repeat+(motionArgs.repeatOffset||0);
+          var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
+          var first = cm.firstLine();
+          var last = cm.lastLine();
+          var posV = cm.findPosV(cur, (motionArgs.forward ? repeat : -repeat), 'line', vim.lastHSPos);
+          var hasMarkedText = motionArgs.forward ? posV.line > line : posV.line < line;
+          if (hasMarkedText) {
+            line = posV.line;
+            endCh = posV.ch;
+          }
+          // Vim go to line begin or line end when cursor at first/last line and
+          // move to previous/next line is triggered.
+          if (line < first && cur.line == first){
+            return this.moveToStartOfLine(cm, head, motionArgs, vim);
+          }else if (line > last && cur.line == last){
+              return this.moveToEol(cm, head, motionArgs, vim, true);
+          }
+          if (motionArgs.toFirstChar){
+            endCh=findFirstNonWhiteSpaceCharacter(cm.getLine(line));
+            vim.lastHPos = endCh;
+          }
+          vim.lastHSPos = cm.charCoords(Pos(line, endCh),'div').left;
+          return Pos(line, endCh);
+        },
+        moveByDisplayLines: function(cm, head, motionArgs, vim) {
+          var cur = head;
+          switch (vim.lastMotion) {
+            case this.moveByDisplayLines:
+            case this.moveByScroll:
+            case this.moveByLines:
+            case this.moveToColumn:
+            case this.moveToEol:
+              break;
+            default:
+              vim.lastHSPos = cm.charCoords(cur,'div').left;
+          }
+          var repeat = motionArgs.repeat;
+          var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),'line',vim.lastHSPos);
+          if (res.hitSide) {
+            if (motionArgs.forward) {
+              var lastCharCoords = cm.charCoords(res, 'div');
+              var goalCoords = { top: lastCharCoords.top + 8, left: vim.lastHSPos };
+              var res = cm.coordsChar(goalCoords, 'div');
+            } else {
+              var resCoords = cm.charCoords(Pos(cm.firstLine(), 0), 'div');
+              resCoords.left = vim.lastHSPos;
+              res = cm.coordsChar(resCoords, 'div');
+            }
+          }
+          vim.lastHPos = res.ch;
+          return res;
+        },
+        moveByPage: function(cm, head, motionArgs) {
+          // CodeMirror only exposes functions that move the cursor page down, so
+          // doing this bad hack to move the cursor and move it back. evalInput
+          // will move the cursor to where it should be in the end.
+          var curStart = head;
+          var repeat = motionArgs.repeat;
+          return cm.findPosV(curStart, (motionArgs.forward ? repeat : -repeat), 'page');
+        },
+        moveByParagraph: function(cm, head, motionArgs) {
+          var dir = motionArgs.forward ? 1 : -1;
+          return findParagraph(cm, head, motionArgs.repeat, dir);
+        },
+        moveBySentence: function(cm, head, motionArgs) {
+          var dir = motionArgs.forward ? 1 : -1;
+          return findSentence(cm, head, motionArgs.repeat, dir);
+        },
+        moveByScroll: function(cm, head, motionArgs, vim) {
+          var scrollbox = cm.getScrollInfo();
+          var curEnd = null;
+          var repeat = motionArgs.repeat;
+          if (!repeat) {
+            repeat = scrollbox.clientHeight / (2 * cm.defaultTextHeight());
+          }
+          var orig = cm.charCoords(head, 'local');
+          motionArgs.repeat = repeat;
+          var curEnd = motions.moveByDisplayLines(cm, head, motionArgs, vim);
+          if (!curEnd) {
+            return null;
+          }
+          var dest = cm.charCoords(curEnd, 'local');
+          cm.scrollTo(null, scrollbox.top + dest.top - orig.top);
+          return curEnd;
+        },
+        moveByWords: function(cm, head, motionArgs) {
+          return moveToWord(cm, head, motionArgs.repeat, !!motionArgs.forward,
+              !!motionArgs.wordEnd, !!motionArgs.bigWord);
+        },
+        moveTillCharacter: function(cm, _head, motionArgs) {
+          var repeat = motionArgs.repeat;
+          var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
+              motionArgs.selectedCharacter);
+          var increment = motionArgs.forward ? -1 : 1;
+          recordLastCharacterSearch(increment, motionArgs);
+          if (!curEnd) return null;
+          curEnd.ch += increment;
+          return curEnd;
+        },
+        moveToCharacter: function(cm, head, motionArgs) {
+          var repeat = motionArgs.repeat;
+          recordLastCharacterSearch(0, motionArgs);
+          return moveToCharacter(cm, repeat, motionArgs.forward,
+              motionArgs.selectedCharacter) || head;
+        },
+        moveToSymbol: function(cm, head, motionArgs) {
+          var repeat = motionArgs.repeat;
+          return findSymbol(cm, repeat, motionArgs.forward,
+              motionArgs.selectedCharacter) || head;
+        },
+        moveToColumn: function(cm, head, motionArgs, vim) {
+          var repeat = motionArgs.repeat;
+          // repeat is equivalent to which column we want to move to!
+          vim.lastHPos = repeat - 1;
+          vim.lastHSPos = cm.charCoords(head,'div').left;
+          return moveToColumn(cm, repeat);
+        },
+        moveToEol: function(cm, head, motionArgs, vim, keepHPos) {
+          var cur = head;
+          var retval= Pos(cur.line + motionArgs.repeat - 1, Infinity);
+          var end=cm.clipPos(retval);
+          end.ch--;
+          if (!keepHPos) {
+            vim.lastHPos = Infinity;
+            vim.lastHSPos = cm.charCoords(end,'div').left;
+          }
+          return retval;
+        },
+        moveToFirstNonWhiteSpaceCharacter: function(cm, head) {
+          // Go to the start of the line where the text begins, or the end for
+          // whitespace-only lines
+          var cursor = head;
+          return Pos(cursor.line,
+                     findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)));
+        },
+        moveToMatchedSymbol: function(cm, head) {
+          var cursor = head;
+          var line = cursor.line;
+          var ch = cursor.ch;
+          var lineText = cm.getLine(line);
+          var symbol;
+          for (; ch < lineText.length; ch++) {
+            symbol = lineText.charAt(ch);
+            if (symbol && isMatchableSymbol(symbol)) {
+              var style = cm.getTokenTypeAt(Pos(line, ch + 1));
+              if (style !== "string" && style !== "comment") {
+                break;
+              }
+            }
+          }
+          if (ch < lineText.length) {
+            // Only include angle brackets in analysis if they are being matched.
+            var re = (ch === '<' || ch === '>') ? /[(){}[\]<>]/ : /[(){}[\]]/;
+            var matched = cm.findMatchingBracket(Pos(line, ch), {bracketRegex: re});
+            return matched.to;
+          } else {
+            return cursor;
+          }
+        },
+        moveToStartOfLine: function(_cm, head) {
+          return Pos(head.line, 0);
+        },
+        moveToLineOrEdgeOfDocument: function(cm, _head, motionArgs) {
+          var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
+          if (motionArgs.repeatIsExplicit) {
+            lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
+          }
+          return Pos(lineNum,
+                     findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)));
+        },
+        textObjectManipulation: function(cm, head, motionArgs, vim) {
+          // TODO: lots of possible exceptions that can be thrown here. Try da(
+          //     outside of a () block.
+          var mirroredPairs = {'(': ')', ')': '(',
+                               '{': '}', '}': '{',
+                               '[': ']', ']': '[',
+                               '<': '>', '>': '<'};
+          var selfPaired = {'\'': true, '"': true, '`': true};
+  
+          var character = motionArgs.selectedCharacter;
+          // 'b' refers to  '()' block.
+          // 'B' refers to  '{}' block.
+          if (character == 'b') {
+            character = '(';
+          } else if (character == 'B') {
+            character = '{';
+          }
+  
+          // Inclusive is the difference between a and i
+          // TODO: Instead of using the additional text object map to perform text
+          //     object operations, merge the map into the defaultKeyMap and use
+          //     motionArgs to define behavior. Define separate entries for 'aw',
+          //     'iw', 'a[', 'i[', etc.
+          var inclusive = !motionArgs.textObjectInner;
+  
+          var tmp;
+          if (mirroredPairs[character]) {
+            tmp = selectCompanionObject(cm, head, character, inclusive);
+          } else if (selfPaired[character]) {
+            tmp = findBeginningAndEnd(cm, head, character, inclusive);
+          } else if (character === 'W') {
+            tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
+                                                       true /** bigWord */);
+          } else if (character === 'w') {
+            tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
+                                                       false /** bigWord */);
+          } else if (character === 'p') {
+            tmp = findParagraph(cm, head, motionArgs.repeat, 0, inclusive);
+            motionArgs.linewise = true;
+            if (vim.visualMode) {
+              if (!vim.visualLine) { vim.visualLine = true; }
+            } else {
+              var operatorArgs = vim.inputState.operatorArgs;
+              if (operatorArgs) { operatorArgs.linewise = true; }
+              tmp.end.line--;
+            }
+          } else {
+            // No text object defined for this, don't move.
+            return null;
+          }
+  
+          if (!cm.state.vim.visualMode) {
+            return [tmp.start, tmp.end];
+          } else {
+            return expandSelection(cm, tmp.start, tmp.end);
+          }
+        },
+  
+        repeatLastCharacterSearch: function(cm, head, motionArgs) {
+          var lastSearch = vimGlobalState.lastCharacterSearch;
+          var repeat = motionArgs.repeat;
+          var forward = motionArgs.forward === lastSearch.forward;
+          var increment = (lastSearch.increment ? 1 : 0) * (forward ? -1 : 1);
+          cm.moveH(-increment, 'char');
+          motionArgs.inclusive = forward ? true : false;
+          var curEnd = moveToCharacter(cm, repeat, forward, lastSearch.selectedCharacter);
+          if (!curEnd) {
+            cm.moveH(increment, 'char');
+            return head;
+          }
+          curEnd.ch += increment;
+          return curEnd;
+        }
+      };
+  
+      function defineMotion(name, fn) {
+        motions[name] = fn;
+      }
+  
+      function fillArray(val, times) {
+        var arr = [];
+        for (var i = 0; i < times; i++) {
+          arr.push(val);
+        }
+        return arr;
+      }
+      /**
+       * An operator acts on a text selection. It receives the list of selections
+       * as input. The corresponding CodeMirror selection is guaranteed to
+      * match the input selection.
+       */
+      var operators = {
+        change: function(cm, args, ranges) {
+          var finalHead, text;
+          var vim = cm.state.vim;
+          var anchor = ranges[0].anchor,
+              head = ranges[0].head;
+          if (!vim.visualMode) {
+            text = cm.getRange(anchor, head);
+            var lastState = vim.lastEditInputState || {};
+            if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
+              // Exclude trailing whitespace if the range is not all whitespace.
+              var match = (/\s+$/).exec(text);
+              if (match && lastState.motionArgs && lastState.motionArgs.forward) {
+                head = offsetCursor(head, 0, - match[0].length);
+                text = text.slice(0, - match[0].length);
+              }
+            }
+            var prevLineEnd = new Pos(anchor.line - 1, Number.MAX_VALUE);
+            var wasLastLine = cm.firstLine() == cm.lastLine();
+            if (head.line > cm.lastLine() && args.linewise && !wasLastLine) {
+              cm.replaceRange('', prevLineEnd, head);
+            } else {
+              cm.replaceRange('', anchor, head);
+            }
+            if (args.linewise) {
+              // Push the next line back down, if there is a next line.
+              if (!wasLastLine) {
+                cm.setCursor(prevLineEnd);
+                CodeMirror.commands.newlineAndIndent(cm);
+              }
+              // make sure cursor ends up at the end of the line.
+              anchor.ch = Number.MAX_VALUE;
+            }
+            finalHead = anchor;
+          } else if (args.fullLine) {
+              head.ch = Number.MAX_VALUE;
+              head.line--;
+              cm.setSelection(anchor, head)
+              text = cm.getSelection();
+              cm.replaceSelection("");
+              finalHead = anchor;
+          } else {
+            text = cm.getSelection();
+            var replacement = fillArray('', ranges.length);
+            cm.replaceSelections(replacement);
+            finalHead = cursorMin(ranges[0].head, ranges[0].anchor);
+          }
+          vimGlobalState.registerController.pushText(
+              args.registerName, 'change', text,
+              args.linewise, ranges.length > 1);
+          actions.enterInsertMode(cm, {head: finalHead}, cm.state.vim);
+        },
+        // delete is a javascript keyword.
+        'delete': function(cm, args, ranges) {
+          var finalHead, text;
+          var vim = cm.state.vim;
+          if (!vim.visualBlock) {
+            var anchor = ranges[0].anchor,
+                head = ranges[0].head;
+            if (args.linewise &&
+                head.line != cm.firstLine() &&
+                anchor.line == cm.lastLine() &&
+                anchor.line == head.line - 1) {
+              // Special case for dd on last line (and first line).
+              if (anchor.line == cm.firstLine()) {
+                anchor.ch = 0;
+              } else {
+                anchor = Pos(anchor.line - 1, lineLength(cm, anchor.line - 1));
+              }
+            }
+            text = cm.getRange(anchor, head);
+            cm.replaceRange('', anchor, head);
+            finalHead = anchor;
+            if (args.linewise) {
+              finalHead = motions.moveToFirstNonWhiteSpaceCharacter(cm, anchor);
+            }
+          } else {
+            text = cm.getSelection();
+            var replacement = fillArray('', ranges.length);
+            cm.replaceSelections(replacement);
+            finalHead = ranges[0].anchor;
+          }
+          vimGlobalState.registerController.pushText(
+              args.registerName, 'delete', text,
+              args.linewise, vim.visualBlock);
+          return clipCursorToContent(cm, finalHead);
+        },
+        indent: function(cm, args, ranges) {
+          var vim = cm.state.vim;
+          var startLine = ranges[0].anchor.line;
+          var endLine = vim.visualBlock ?
+            ranges[ranges.length - 1].anchor.line :
+            ranges[0].head.line;
+          // In visual mode, n> shifts the selection right n times, instead of
+          // shifting n lines right once.
+          var repeat = (vim.visualMode) ? args.repeat : 1;
+          if (args.linewise) {
+            // The only way to delete a newline is to delete until the start of
+            // the next line, so in linewise mode evalInput will include the next
+            // line. We don't want this in indent, so we go back a line.
+            endLine--;
+          }
+          for (var i = startLine; i <= endLine; i++) {
+            for (var j = 0; j < repeat; j++) {
+              cm.indentLine(i, args.indentRight);
+            }
+          }
+          return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
+        },
+        indentAuto: function(cm, _args, ranges) {
+          cm.execCommand("indentAuto");
+          return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
+        },
+        changeCase: function(cm, args, ranges, oldAnchor, newHead) {
+          var selections = cm.getSelections();
+          var swapped = [];
+          var toLower = args.toLower;
+          for (var j = 0; j < selections.length; j++) {
+            var toSwap = selections[j];
+            var text = '';
+            if (toLower === true) {
+              text = toSwap.toLowerCase();
+            } else if (toLower === false) {
+              text = toSwap.toUpperCase();
+            } else {
+              for (var i = 0; i < toSwap.length; i++) {
+                var character = toSwap.charAt(i);
+                text += isUpperCase(character) ? character.toLowerCase() :
+                    character.toUpperCase();
+              }
+            }
+            swapped.push(text);
+          }
+          cm.replaceSelections(swapped);
+          if (args.shouldMoveCursor){
+            return newHead;
+          } else if (!cm.state.vim.visualMode && args.linewise && ranges[0].anchor.line + 1 == ranges[0].head.line) {
+            return motions.moveToFirstNonWhiteSpaceCharacter(cm, oldAnchor);
+          } else if (args.linewise){
+            return oldAnchor;
+          } else {
+            return cursorMin(ranges[0].anchor, ranges[0].head);
+          }
+        },
+        yank: function(cm, args, ranges, oldAnchor) {
+          var vim = cm.state.vim;
+          var text = cm.getSelection();
+          var endPos = vim.visualMode
+            ? cursorMin(vim.sel.anchor, vim.sel.head, ranges[0].head, ranges[0].anchor)
+            : oldAnchor;
+          vimGlobalState.registerController.pushText(
+              args.registerName, 'yank',
+              text, args.linewise, vim.visualBlock);
+          return endPos;
+        }
+      };
+  
+      function defineOperator(name, fn) {
+        operators[name] = fn;
+      }
+  
+      var actions = {
+        jumpListWalk: function(cm, actionArgs, vim) {
+          if (vim.visualMode) {
+            return;
+          }
+          var repeat = actionArgs.repeat;
+          var forward = actionArgs.forward;
+          var jumpList = vimGlobalState.jumpList;
+  
+          var mark = jumpList.move(cm, forward ? repeat : -repeat);
+          var markPos = mark ? mark.find() : undefined;
+          markPos = markPos ? markPos : cm.getCursor();
+          cm.setCursor(markPos);
+        },
+        scroll: function(cm, actionArgs, vim) {
+          if (vim.visualMode) {
+            return;
+          }
+          var repeat = actionArgs.repeat || 1;
+          var lineHeight = cm.defaultTextHeight();
+          var top = cm.getScrollInfo().top;
+          var delta = lineHeight * repeat;
+          var newPos = actionArgs.forward ? top + delta : top - delta;
+          var cursor = copyCursor(cm.getCursor());
+          var cursorCoords = cm.charCoords(cursor, 'local');
+          if (actionArgs.forward) {
+            if (newPos > cursorCoords.top) {
+               cursor.line += (newPos - cursorCoords.top) / lineHeight;
+               cursor.line = Math.ceil(cursor.line);
+               cm.setCursor(cursor);
+               cursorCoords = cm.charCoords(cursor, 'local');
+               cm.scrollTo(null, cursorCoords.top);
+            } else {
+               // Cursor stays within bounds.  Just reposition the scroll window.
+               cm.scrollTo(null, newPos);
+            }
+          } else {
+            var newBottom = newPos + cm.getScrollInfo().clientHeight;
+            if (newBottom < cursorCoords.bottom) {
+               cursor.line -= (cursorCoords.bottom - newBottom) / lineHeight;
+               cursor.line = Math.floor(cursor.line);
+               cm.setCursor(cursor);
+               cursorCoords = cm.charCoords(cursor, 'local');
+               cm.scrollTo(
+                   null, cursorCoords.bottom - cm.getScrollInfo().clientHeight);
+            } else {
+               // Cursor stays within bounds.  Just reposition the scroll window.
+               cm.scrollTo(null, newPos);
+            }
+          }
+        },
+        scrollToCursor: function(cm, actionArgs) {
+          var lineNum = cm.getCursor().line;
+          var charCoords = cm.charCoords(Pos(lineNum, 0), 'local');
+          var height = cm.getScrollInfo().clientHeight;
+          var y = charCoords.top;
+          var lineHeight = charCoords.bottom - y;
+          switch (actionArgs.position) {
+            case 'center': y = y - (height / 2) + lineHeight;
+              break;
+            case 'bottom': y = y - height + lineHeight;
+              break;
+          }
+          cm.scrollTo(null, y);
+        },
+        replayMacro: function(cm, actionArgs, vim) {
+          var registerName = actionArgs.selectedCharacter;
+          var repeat = actionArgs.repeat;
+          var macroModeState = vimGlobalState.macroModeState;
+          if (registerName == '@') {
+            registerName = macroModeState.latestRegister;
+          } else {
+            macroModeState.latestRegister = registerName;
+          }
+          while(repeat--){
+            executeMacroRegister(cm, vim, macroModeState, registerName);
+          }
+        },
+        enterMacroRecordMode: function(cm, actionArgs) {
+          var macroModeState = vimGlobalState.macroModeState;
+          var registerName = actionArgs.selectedCharacter;
+          if (vimGlobalState.registerController.isValidRegister(registerName)) {
+            macroModeState.enterMacroRecordMode(cm, registerName);
+          }
+        },
+        toggleOverwrite: function(cm) {
+          if (!cm.state.overwrite) {
+            cm.toggleOverwrite(true);
+            cm.setOption('keyMap', 'vim-replace');
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
+          } else {
+            cm.toggleOverwrite(false);
+            cm.setOption('keyMap', 'vim-insert');
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
+          }
+        },
+        enterInsertMode: function(cm, actionArgs, vim) {
+          if (cm.getOption('readOnly')) { return; }
+          vim.insertMode = true;
+          vim.insertModeRepeat = actionArgs && actionArgs.repeat || 1;
+          var insertAt = (actionArgs) ? actionArgs.insertAt : null;
+          var sel = vim.sel;
+          var head = actionArgs.head || cm.getCursor('head');
+          var height = cm.listSelections().length;
+          if (insertAt == 'eol') {
+            head = Pos(head.line, lineLength(cm, head.line));
+          } else if (insertAt == 'bol') {
+            head = Pos(head.line, 0);
+          } else if (insertAt == 'charAfter') {
+            head = offsetCursor(head, 0, 1);
+          } else if (insertAt == 'firstNonBlank') {
+            head = motions.moveToFirstNonWhiteSpaceCharacter(cm, head);
+          } else if (insertAt == 'startOfSelectedArea') {
+            if (!vim.visualMode)
+                return;
+            if (!vim.visualBlock) {
+              if (sel.head.line < sel.anchor.line) {
+                head = sel.head;
+              } else {
+                head = Pos(sel.anchor.line, 0);
+              }
+            } else {
+              head = Pos(
+                  Math.min(sel.head.line, sel.anchor.line),
+                  Math.min(sel.head.ch, sel.anchor.ch));
+              height = Math.abs(sel.head.line - sel.anchor.line) + 1;
+            }
+          } else if (insertAt == 'endOfSelectedArea') {
+              if (!vim.visualMode)
+                return;
+            if (!vim.visualBlock) {
+              if (sel.head.line >= sel.anchor.line) {
+                head = offsetCursor(sel.head, 0, 1);
+              } else {
+                head = Pos(sel.anchor.line, 0);
+              }
+            } else {
+              head = Pos(
+                  Math.min(sel.head.line, sel.anchor.line),
+                  Math.max(sel.head.ch + 1, sel.anchor.ch));
+              height = Math.abs(sel.head.line - sel.anchor.line) + 1;
+            }
+          } else if (insertAt == 'inplace') {
+            if (vim.visualMode){
+              return;
+            }
+          } else if (insertAt == 'lastEdit') {
+            head = getLastEditPos(cm) || head;
+          }
+          cm.setOption('disableInput', false);
+          if (actionArgs && actionArgs.replace) {
+            // Handle Replace-mode as a special case of insert mode.
+            cm.toggleOverwrite(true);
+            cm.setOption('keyMap', 'vim-replace');
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
+          } else {
+            cm.toggleOverwrite(false);
+            cm.setOption('keyMap', 'vim-insert');
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
+          }
+          if (!vimGlobalState.macroModeState.isPlaying) {
+            // Only record if not replaying.
+            cm.on('change', onChange);
+            CodeMirror.on(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
+          }
+          if (vim.visualMode) {
+            exitVisualMode(cm);
+          }
+          selectForInsert(cm, head, height);
+        },
+        toggleVisualMode: function(cm, actionArgs, vim) {
+          var repeat = actionArgs.repeat;
+          var anchor = cm.getCursor();
+          var head;
+          // TODO: The repeat should actually select number of characters/lines
+          //     equal to the repeat times the size of the previous visual
+          //     operation.
+          if (!vim.visualMode) {
+            // Entering visual mode
+            vim.visualMode = true;
+            vim.visualLine = !!actionArgs.linewise;
+            vim.visualBlock = !!actionArgs.blockwise;
+            head = clipCursorToContent(
+                cm, Pos(anchor.line, anchor.ch + repeat - 1));
+            vim.sel = {
+              anchor: anchor,
+              head: head
+            };
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
+            updateCmSelection(cm);
+            updateMark(cm, vim, '<', cursorMin(anchor, head));
+            updateMark(cm, vim, '>', cursorMax(anchor, head));
+          } else if (vim.visualLine ^ actionArgs.linewise ||
+              vim.visualBlock ^ actionArgs.blockwise) {
+            // Toggling between modes
+            vim.visualLine = !!actionArgs.linewise;
+            vim.visualBlock = !!actionArgs.blockwise;
+            CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
+            updateCmSelection(cm);
+          } else {
+            exitVisualMode(cm);
+          }
+        },
+        reselectLastSelection: function(cm, _actionArgs, vim) {
+          var lastSelection = vim.lastSelection;
+          if (vim.visualMode) {
+            updateLastSelection(cm, vim);
+          }
+          if (lastSelection) {
+            var anchor = lastSelection.anchorMark.find();
+            var head = lastSelection.headMark.find();
+            if (!anchor || !head) {
+              // If the marks have been destroyed due to edits, do nothing.
+              return;
+            }
+            vim.sel = {
+              anchor: anchor,
+              head: head
+            };
+            vim.visualMode = true;
+            vim.visualLine = lastSelection.visualLine;
+            vim.visualBlock = lastSelection.visualBlock;
+            updateCmSelection(cm);
+            updateMark(cm, vim, '<', cursorMin(anchor, head));
+            updateMark(cm, vim, '>', cursorMax(anchor, head));
+            CodeMirror.signal(cm, 'vim-mode-change', {
+              mode: 'visual',
+              subMode: vim.visualLine ? 'linewise' :
+                       vim.visualBlock ? 'blockwise' : ''});
+          }
+        },
+        joinLines: function(cm, actionArgs, vim) {
+          var curStart, curEnd;
+          if (vim.visualMode) {
+            curStart = cm.getCursor('anchor');
+            curEnd = cm.getCursor('head');
+            if (cursorIsBefore(curEnd, curStart)) {
+              var tmp = curEnd;
+              curEnd = curStart;
+              curStart = tmp;
+            }
+            curEnd.ch = lineLength(cm, curEnd.line) - 1;
+          } else {
+            // Repeat is the number of lines to join. Minimum 2 lines.
+            var repeat = Math.max(actionArgs.repeat, 2);
+            curStart = cm.getCursor();
+            curEnd = clipCursorToContent(cm, Pos(curStart.line + repeat - 1,
+                                                 Infinity));
+          }
+          var finalCh = 0;
+          for (var i = curStart.line; i < curEnd.line; i++) {
+            finalCh = lineLength(cm, curStart.line);
+            var tmp = Pos(curStart.line + 1,
+                          lineLength(cm, curStart.line + 1));
+            var text = cm.getRange(curStart, tmp);
+            text = actionArgs.keepSpaces
+              ? text.replace(/\n\r?/g, '')
+              : text.replace(/\n\s*/g, ' ');
+            cm.replaceRange(text, curStart, tmp);
+          }
+          var curFinalPos = Pos(curStart.line, finalCh);
+          if (vim.visualMode) {
+            exitVisualMode(cm, false);
+          }
+          cm.setCursor(curFinalPos);
+        },
+        newLineAndEnterInsertMode: function(cm, actionArgs, vim) {
+          vim.insertMode = true;
+          var insertAt = copyCursor(cm.getCursor());
+          if (insertAt.line === cm.firstLine() && !actionArgs.after) {
+            // Special case for inserting newline before start of document.
+            cm.replaceRange('\n', Pos(cm.firstLine(), 0));
+            cm.setCursor(cm.firstLine(), 0);
+          } else {
+            insertAt.line = (actionArgs.after) ? insertAt.line :
+                insertAt.line - 1;
+            insertAt.ch = lineLength(cm, insertAt.line);
+            cm.setCursor(insertAt);
+            var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
+                CodeMirror.commands.newlineAndIndent;
+            newlineFn(cm);
+          }
+          this.enterInsertMode(cm, { repeat: actionArgs.repeat }, vim);
+        },
+        paste: function(cm, actionArgs, vim) {
+          var cur = copyCursor(cm.getCursor());
+          var register = vimGlobalState.registerController.getRegister(
+              actionArgs.registerName);
+          var text = register.toString();
+          if (!text) {
+            return;
+          }
+          if (actionArgs.matchIndent) {
+            var tabSize = cm.getOption("tabSize");
+            // length that considers tabs and tabSize
+            var whitespaceLength = function(str) {
+              var tabs = (str.split("\t").length - 1);
+              var spaces = (str.split(" ").length - 1);
+              return tabs * tabSize + spaces * 1;
+            };
+            var currentLine = cm.getLine(cm.getCursor().line);
+            var indent = whitespaceLength(currentLine.match(/^\s*/)[0]);
+            // chomp last newline b/c don't want it to match /^\s*/gm
+            var chompedText = text.replace(/\n$/, '');
+            var wasChomped = text !== chompedText;
+            var firstIndent = whitespaceLength(text.match(/^\s*/)[0]);
+            var text = chompedText.replace(/^\s*/gm, function(wspace) {
+              var newIndent = indent + (whitespaceLength(wspace) - firstIndent);
+              if (newIndent < 0) {
+                return "";
+              }
+              else if (cm.getOption("indentWithTabs")) {
+                var quotient = Math.floor(newIndent / tabSize);
+                return Array(quotient + 1).join('\t');
+              }
+              else {
+                return Array(newIndent + 1).join(' ');
+              }
+            });
+            text += wasChomped ? "\n" : "";
+          }
+          if (actionArgs.repeat > 1) {
+            var text = Array(actionArgs.repeat + 1).join(text);
+          }
+          var linewise = register.linewise;
+          var blockwise = register.blockwise;
+          if (blockwise) {
+            text = text.split('\n');
+            if (linewise) {
+                text.pop();
+            }
+            for (var i = 0; i < text.length; i++) {
+              text[i] = (text[i] == '') ? ' ' : text[i];
+            }
+            cur.ch += actionArgs.after ? 1 : 0;
+            cur.ch = Math.min(lineLength(cm, cur.line), cur.ch);
+          } else if (linewise) {
+            if(vim.visualMode) {
+              text = vim.visualLine ? text.slice(0, -1) : '\n' + text.slice(0, text.length - 1) + '\n';
+            } else if (actionArgs.after) {
+              // Move the newline at the end to the start instead, and paste just
+              // before the newline character of the line we are on right now.
+              text = '\n' + text.slice(0, text.length - 1);
+              cur.ch = lineLength(cm, cur.line);
+            } else {
+              cur.ch = 0;
+            }
+          } else {
+            cur.ch += actionArgs.after ? 1 : 0;
+          }
+          var curPosFinal;
+          var idx;
+          if (vim.visualMode) {
+            //  save the pasted text for reselection if the need arises
+            vim.lastPastedText = text;
+            var lastSelectionCurEnd;
+            var selectedArea = getSelectedAreaRange(cm, vim);
+            var selectionStart = selectedArea[0];
+            var selectionEnd = selectedArea[1];
+            var selectedText = cm.getSelection();
+            var selections = cm.listSelections();
+            var emptyStrings = new Array(selections.length).join('1').split('1');
+            // save the curEnd marker before it get cleared due to cm.replaceRange.
+            if (vim.lastSelection) {
+              lastSelectionCurEnd = vim.lastSelection.headMark.find();
+            }
+            // push the previously selected text to unnamed register
+            vimGlobalState.registerController.unnamedRegister.setText(selectedText);
+            if (blockwise) {
+              // first delete the selected text
+              cm.replaceSelections(emptyStrings);
+              // Set new selections as per the block length of the yanked text
+              selectionEnd = Pos(selectionStart.line + text.length-1, selectionStart.ch);
+              cm.setCursor(selectionStart);
+              selectBlock(cm, selectionEnd);
+              cm.replaceSelections(text);
+              curPosFinal = selectionStart;
+            } else if (vim.visualBlock) {
+              cm.replaceSelections(emptyStrings);
+              cm.setCursor(selectionStart);
+              cm.replaceRange(text, selectionStart, selectionStart);
+              curPosFinal = selectionStart;
+            } else {
+              cm.replaceRange(text, selectionStart, selectionEnd);
+              curPosFinal = cm.posFromIndex(cm.indexFromPos(selectionStart) + text.length - 1);
+            }
+            // restore the the curEnd marker
+            if(lastSelectionCurEnd) {
+              vim.lastSelection.headMark = cm.setBookmark(lastSelectionCurEnd);
+            }
+            if (linewise) {
+              curPosFinal.ch=0;
+            }
+          } else {
+            if (blockwise) {
+              cm.setCursor(cur);
+              for (var i = 0; i < text.length; i++) {
+                var line = cur.line+i;
+                if (line > cm.lastLine()) {
+                  cm.replaceRange('\n',  Pos(line, 0));
+                }
+                var lastCh = lineLength(cm, line);
+                if (lastCh < cur.ch) {
+                  extendLineToColumn(cm, line, cur.ch);
+                }
+              }
+              cm.setCursor(cur);
+              selectBlock(cm, Pos(cur.line + text.length-1, cur.ch));
+              cm.replaceSelections(text);
+              curPosFinal = cur;
+            } else {
+              cm.replaceRange(text, cur);
+              // Now fine tune the cursor to where we want it.
+              if (linewise && actionArgs.after) {
+                curPosFinal = Pos(
+                cur.line + 1,
+                findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)));
+              } else if (linewise && !actionArgs.after) {
+                curPosFinal = Pos(
+                  cur.line,
+                  findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)));
+              } else if (!linewise && actionArgs.after) {
+                idx = cm.indexFromPos(cur);
+                curPosFinal = cm.posFromIndex(idx + text.length - 1);
+              } else {
+                idx = cm.indexFromPos(cur);
+                curPosFinal = cm.posFromIndex(idx + text.length);
+              }
+            }
+          }
+          if (vim.visualMode) {
+            exitVisualMode(cm, false);
+          }
+          cm.setCursor(curPosFinal);
+        },
+        undo: function(cm, actionArgs) {
+          cm.operation(function() {
+            repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
+            cm.setCursor(cm.getCursor('anchor'));
+          });
+        },
+        redo: function(cm, actionArgs) {
+          repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
+        },
+        setRegister: function(_cm, actionArgs, vim) {
+          vim.inputState.registerName = actionArgs.selectedCharacter;
+        },
+        setMark: function(cm, actionArgs, vim) {
+          var markName = actionArgs.selectedCharacter;
+          updateMark(cm, vim, markName, cm.getCursor());
+        },
+        replace: function(cm, actionArgs, vim) {
+          var replaceWith = actionArgs.selectedCharacter;
+          var curStart = cm.getCursor();
+          var replaceTo;
+          var curEnd;
+          var selections = cm.listSelections();
+          if (vim.visualMode) {
+            curStart = cm.getCursor('start');
+            curEnd = cm.getCursor('end');
+          } else {
+            var line = cm.getLine(curStart.line);
+            replaceTo = curStart.ch + actionArgs.repeat;
+            if (replaceTo > line.length) {
+              replaceTo=line.length;
+            }
+            curEnd = Pos(curStart.line, replaceTo);
+          }
+          if (replaceWith=='\n') {
+            if (!vim.visualMode) cm.replaceRange('', curStart, curEnd);
+            // special case, where vim help says to replace by just one line-break
+            (CodeMirror.commands.newlineAndIndentContinueComment || CodeMirror.commands.newlineAndIndent)(cm);
+          } else {
+            var replaceWithStr = cm.getRange(curStart, curEnd);
+            //replace all characters in range by selected, but keep linebreaks
+            replaceWithStr = replaceWithStr.replace(/[^\n]/g, replaceWith);
+            if (vim.visualBlock) {
+              // Tabs are split in visua block before replacing
+              var spaces = new Array(cm.getOption("tabSize")+1).join(' ');
+              replaceWithStr = cm.getSelection();
+              replaceWithStr = replaceWithStr.replace(/\t/g, spaces).replace(/[^\n]/g, replaceWith).split('\n');
+              cm.replaceSelections(replaceWithStr);
+            } else {
+              cm.replaceRange(replaceWithStr, curStart, curEnd);
+            }
+            if (vim.visualMode) {
+              curStart = cursorIsBefore(selections[0].anchor, selections[0].head) ?
+                           selections[0].anchor : selections[0].head;
+              cm.setCursor(curStart);
+              exitVisualMode(cm, false);
+            } else {
+              cm.setCursor(offsetCursor(curEnd, 0, -1));
+            }
+          }
+        },
+        incrementNumberToken: function(cm, actionArgs) {
+          var cur = cm.getCursor();
+          var lineStr = cm.getLine(cur.line);
+          var re = /(-?)(?:(0x)([\da-f]+)|(0b|0|)(\d+))/gi;
+          var match;
+          var start;
+          var end;
+          var numberStr;
+          while ((match = re.exec(lineStr)) !== null) {
+            start = match.index;
+            end = start + match[0].length;
+            if (cur.ch < end)break;
+          }
+          if (!actionArgs.backtrack && (end <= cur.ch))return;
+          if (match) {
+            var baseStr = match[2] || match[4]
+            var digits = match[3] || match[5]
+            var increment = actionArgs.increase ? 1 : -1;
+            var base = {'0b': 2, '0': 8, '': 10, '0x': 16}[baseStr.toLowerCase()];
+            var number = parseInt(match[1] + digits, base) + (increment * actionArgs.repeat);
+            numberStr = number.toString(base);
+            var zeroPadding = baseStr ? new Array(digits.length - numberStr.length + 1 + match[1].length).join('0') : ''
+            if (numberStr.charAt(0) === '-') {
+              numberStr = '-' + baseStr + zeroPadding + numberStr.substr(1);
+            } else {
+              numberStr = baseStr + zeroPadding + numberStr;
+            }
+            var from = Pos(cur.line, start);
+            var to = Pos(cur.line, end);
+            cm.replaceRange(numberStr, from, to);
+          } else {
+            return;
+          }
+          cm.setCursor(Pos(cur.line, start + numberStr.length - 1));
+        },
+        repeatLastEdit: function(cm, actionArgs, vim) {
+          var lastEditInputState = vim.lastEditInputState;
+          if (!lastEditInputState) { return; }
+          var repeat = actionArgs.repeat;
+          if (repeat && actionArgs.repeatIsExplicit) {
+            vim.lastEditInputState.repeatOverride = repeat;
+          } else {
+            repeat = vim.lastEditInputState.repeatOverride || repeat;
+          }
+          repeatLastEdit(cm, vim, repeat, false /** repeatForInsert */);
+        },
+        indent: function(cm, actionArgs) {
+          cm.indentLine(cm.getCursor().line, actionArgs.indentRight);
+        },
+        exitInsertMode: exitInsertMode
+      };
+  
+      function defineAction(name, fn) {
+        actions[name] = fn;
+      }
+  
+      /*
+       * Below are miscellaneous utility functions used by vim.js
+       */
+  
+      /**
+       * Clips cursor to ensure that line is within the buffer's range
+       * If includeLineBreak is true, then allow cur.ch == lineLength.
+       */
+      function clipCursorToContent(cm, cur) {
+        var vim = cm.state.vim;
+        var includeLineBreak = vim.insertMode || vim.visualMode;
+        var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
+        var maxCh = lineLength(cm, line) - 1 + !!includeLineBreak;
+        var ch = Math.min(Math.max(0, cur.ch), maxCh);
+        return Pos(line, ch);
+      }
+      function copyArgs(args) {
+        var ret = {};
+        for (var prop in args) {
+          if (args.hasOwnProperty(prop)) {
+            ret[prop] = args[prop];
+          }
+        }
+        return ret;
+      }
+      function offsetCursor(cur, offsetLine, offsetCh) {
+        if (typeof offsetLine === 'object') {
+          offsetCh = offsetLine.ch;
+          offsetLine = offsetLine.line;
+        }
+        return Pos(cur.line + offsetLine, cur.ch + offsetCh);
+      }
+      function commandMatches(keys, keyMap, context, inputState) {
+        // Partial matches are not applied. They inform the key handler
+        // that the current key sequence is a subsequence of a valid key
+        // sequence, so that the key buffer is not cleared.
+        var match, partial = [], full = [];
+        for (var i = 0; i < keyMap.length; i++) {
+          var command = keyMap[i];
+          if (context == 'insert' && command.context != 'insert' ||
+              command.context && command.context != context ||
+              inputState.operator && command.type == 'action' ||
+              !(match = commandMatch(keys, command.keys))) { continue; }
+          if (match == 'partial') { partial.push(command); }
+          if (match == 'full') { full.push(command); }
+        }
+        return {
+          partial: partial.length && partial,
+          full: full.length && full
+        };
+      }
+      function commandMatch(pressed, mapped) {
+        if (mapped.slice(-11) == '<character>') {
+          // Last character matches anything.
+          var prefixLen = mapped.length - 11;
+          var pressedPrefix = pressed.slice(0, prefixLen);
+          var mappedPrefix = mapped.slice(0, prefixLen);
+          return pressedPrefix == mappedPrefix && pressed.length > prefixLen ? 'full' :
+                 mappedPrefix.indexOf(pressedPrefix) == 0 ? 'partial' : false;
+        } else {
+          return pressed == mapped ? 'full' :
+                 mapped.indexOf(pressed) == 0 ? 'partial' : false;
+        }
+      }
+      function lastChar(keys) {
+        var match = /^.*(<[^>]+>)$/.exec(keys);
+        var selectedCharacter = match ? match[1] : keys.slice(-1);
+        if (selectedCharacter.length > 1){
+          switch(selectedCharacter){
+            case '<CR>':
+              selectedCharacter='\n';
+              break;
+            case '<Space>':
+              selectedCharacter=' ';
+              break;
+            default:
+              selectedCharacter='';
+              break;
+          }
+        }
+        return selectedCharacter;
+      }
+      function repeatFn(cm, fn, repeat) {
+        return function() {
+          for (var i = 0; i < repeat; i++) {
+            fn(cm);
+          }
+        };
+      }
+      function copyCursor(cur) {
+        return Pos(cur.line, cur.ch);
+      }
+      function cursorEqual(cur1, cur2) {
+        return cur1.ch == cur2.ch && cur1.line == cur2.line;
+      }
+      function cursorIsBefore(cur1, cur2) {
+        if (cur1.line < cur2.line) {
+          return true;
+        }
+        if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
+          return true;
+        }
+        return false;
+      }
+      function cursorMin(cur1, cur2) {
+        if (arguments.length > 2) {
+          cur2 = cursorMin.apply(undefined, Array.prototype.slice.call(arguments, 1));
+        }
+        return cursorIsBefore(cur1, cur2) ? cur1 : cur2;
+      }
+      function cursorMax(cur1, cur2) {
+        if (arguments.length > 2) {
+          cur2 = cursorMax.apply(undefined, Array.prototype.slice.call(arguments, 1));
+        }
+        return cursorIsBefore(cur1, cur2) ? cur2 : cur1;
+      }
+      function cursorIsBetween(cur1, cur2, cur3) {
+        // returns true if cur2 is between cur1 and cur3.
+        var cur1before2 = cursorIsBefore(cur1, cur2);
+        var cur2before3 = cursorIsBefore(cur2, cur3);
+        return cur1before2 && cur2before3;
+      }
+      function lineLength(cm, lineNum) {
+        return cm.getLine(lineNum).length;
+      }
+      function trim(s) {
+        if (s.trim) {
+          return s.trim();
+        }
+        return s.replace(/^\s+|\s+$/g, '');
+      }
+      function escapeRegex(s) {
+        return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, '\\$1');
+      }
+      function extendLineToColumn(cm, lineNum, column) {
+        var endCh = lineLength(cm, lineNum);
+        var spaces = new Array(column-endCh+1).join(' ');
+        cm.setCursor(Pos(lineNum, endCh));
+        cm.replaceRange(spaces, cm.getCursor());
+      }
+      // This functions selects a rectangular block
+      // of text with selectionEnd as any of its corner
+      // Height of block:
+      // Difference in selectionEnd.line and first/last selection.line
+      // Width of the block:
+      // Distance between selectionEnd.ch and any(first considered here) selection.ch
+      function selectBlock(cm, selectionEnd) {
+        var selections = [], ranges = cm.listSelections();
+        var head = copyCursor(cm.clipPos(selectionEnd));
+        var isClipped = !cursorEqual(selectionEnd, head);
+        var curHead = cm.getCursor('head');
+        var primIndex = getIndex(ranges, curHead);
+        var wasClipped = cursorEqual(ranges[primIndex].head, ranges[primIndex].anchor);
+        var max = ranges.length - 1;
+        var index = max - primIndex > primIndex ? max : 0;
+        var base = ranges[index].anchor;
+  
+        var firstLine = Math.min(base.line, head.line);
+        var lastLine = Math.max(base.line, head.line);
+        var baseCh = base.ch, headCh = head.ch;
+  
+        var dir = ranges[index].head.ch - baseCh;
+        var newDir = headCh - baseCh;
+        if (dir > 0 && newDir <= 0) {
+          baseCh++;
+          if (!isClipped) { headCh--; }
+        } else if (dir < 0 && newDir >= 0) {
+          baseCh--;
+          if (!wasClipped) { headCh++; }
+        } else if (dir < 0 && newDir == -1) {
+          baseCh--;
+          headCh++;
+        }
+        for (var line = firstLine; line <= lastLine; line++) {
+          var range = {anchor: new Pos(line, baseCh), head: new Pos(line, headCh)};
+          selections.push(range);
+        }
+        cm.setSelections(selections);
+        selectionEnd.ch = headCh;
+        base.ch = baseCh;
+        return base;
+      }
+      function selectForInsert(cm, head, height) {
+        var sel = [];
+        for (var i = 0; i < height; i++) {
+          var lineHead = offsetCursor(head, i, 0);
+          sel.push({anchor: lineHead, head: lineHead});
+        }
+        cm.setSelections(sel, 0);
+      }
+      // getIndex returns the index of the cursor in the selections.
+      function getIndex(ranges, cursor, end) {
+        for (var i = 0; i < ranges.length; i++) {
+          var atAnchor = end != 'head' && cursorEqual(ranges[i].anchor, cursor);
+          var atHead = end != 'anchor' && cursorEqual(ranges[i].head, cursor);
+          if (atAnchor || atHead) {
+            return i;
+          }
+        }
+        return -1;
+      }
+      function getSelectedAreaRange(cm, vim) {
+        var lastSelection = vim.lastSelection;
+        var getCurrentSelectedAreaRange = function() {
+          var selections = cm.listSelections();
+          var start =  selections[0];
+          var end = selections[selections.length-1];
+          var selectionStart = cursorIsBefore(start.anchor, start.head) ? start.anchor : start.head;
+          var selectionEnd = cursorIsBefore(end.anchor, end.head) ? end.head : end.anchor;
+          return [selectionStart, selectionEnd];
+        };
+        var getLastSelectedAreaRange = function() {
+          var selectionStart = cm.getCursor();
+          var selectionEnd = cm.getCursor();
+          var block = lastSelection.visualBlock;
+          if (block) {
+            var width = block.width;
+            var height = block.height;
+            selectionEnd = Pos(selectionStart.line + height, selectionStart.ch + width);
+            var selections = [];
+            // selectBlock creates a 'proper' rectangular block.
+            // We do not want that in all cases, so we manually set selections.
+            for (var i = selectionStart.line; i < selectionEnd.line; i++) {
+              var anchor = Pos(i, selectionStart.ch);
+              var head = Pos(i, selectionEnd.ch);
+              var range = {anchor: anchor, head: head};
+              selections.push(range);
+            }
+            cm.setSelections(selections);
+          } else {
+            var start = lastSelection.anchorMark.find();
+            var end = lastSelection.headMark.find();
+            var line = end.line - start.line;
+            var ch = end.ch - start.ch;
+            selectionEnd = {line: selectionEnd.line + line, ch: line ? selectionEnd.ch : ch + selectionEnd.ch};
+            if (lastSelection.visualLine) {
+              selectionStart = Pos(selectionStart.line, 0);
+              selectionEnd = Pos(selectionEnd.line, lineLength(cm, selectionEnd.line));
+            }
+            cm.setSelection(selectionStart, selectionEnd);
+          }
+          return [selectionStart, selectionEnd];
+        };
+        if (!vim.visualMode) {
+        // In case of replaying the action.
+          return getLastSelectedAreaRange();
+        } else {
+          return getCurrentSelectedAreaRange();
+        }
+      }
+      // Updates the previous selection with the current selection's values. This
+      // should only be called in visual mode.
+      function updateLastSelection(cm, vim) {
+        var anchor = vim.sel.anchor;
+        var head = vim.sel.head;
+        // To accommodate the effect of lastPastedText in the last selection
+        if (vim.lastPastedText) {
+          head = cm.posFromIndex(cm.indexFromPos(anchor) + vim.lastPastedText.length);
+          vim.lastPastedText = null;
+        }
+        vim.lastSelection = {'anchorMark': cm.setBookmark(anchor),
+                             'headMark': cm.setBookmark(head),
+                             'anchor': copyCursor(anchor),
+                             'head': copyCursor(head),
+                             'visualMode': vim.visualMode,
+                             'visualLine': vim.visualLine,
+                             'visualBlock': vim.visualBlock};
+      }
+      function expandSelection(cm, start, end) {
+        var sel = cm.state.vim.sel;
+        var head = sel.head;
+        var anchor = sel.anchor;
+        var tmp;
+        if (cursorIsBefore(end, start)) {
+          tmp = end;
+          end = start;
+          start = tmp;
+        }
+        if (cursorIsBefore(head, anchor)) {
+          head = cursorMin(start, head);
+          anchor = cursorMax(anchor, end);
+        } else {
+          anchor = cursorMin(start, anchor);
+          head = cursorMax(head, end);
+          head = offsetCursor(head, 0, -1);
+          if (head.ch == -1 && head.line != cm.firstLine()) {
+            head = Pos(head.line - 1, lineLength(cm, head.line - 1));
+          }
+        }
+        return [anchor, head];
+      }
+      /**
+       * Updates the CodeMirror selection to match the provided vim selection.
+       * If no arguments are given, it uses the current vim selection state.
+       */
+      function updateCmSelection(cm, sel, mode) {
+        var vim = cm.state.vim;
+        sel = sel || vim.sel;
+        var mode = mode ||
+          vim.visualLine ? 'line' : vim.visualBlock ? 'block' : 'char';
+        var cmSel = makeCmSelection(cm, sel, mode);
+        cm.setSelections(cmSel.ranges, cmSel.primary);
+        updateFakeCursor(cm);
+      }
+      function makeCmSelection(cm, sel, mode, exclusive) {
+        var head = copyCursor(sel.head);
+        var anchor = copyCursor(sel.anchor);
+        if (mode == 'char') {
+          var headOffset = !exclusive && !cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
+          var anchorOffset = cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
+          head = offsetCursor(sel.head, 0, headOffset);
+          anchor = offsetCursor(sel.anchor, 0, anchorOffset);
+          return {
+            ranges: [{anchor: anchor, head: head}],
+            primary: 0
+          };
+        } else if (mode == 'line') {
+          if (!cursorIsBefore(sel.head, sel.anchor)) {
+            anchor.ch = 0;
+  
+            var lastLine = cm.lastLine();
+            if (head.line > lastLine) {
+              head.line = lastLine;
+            }
+            head.ch = lineLength(cm, head.line);
+          } else {
+            head.ch = 0;
+            anchor.ch = lineLength(cm, anchor.line);
+          }
+          return {
+            ranges: [{anchor: anchor, head: head}],
+            primary: 0
+          };
+        } else if (mode == 'block') {
+          var top = Math.min(anchor.line, head.line),
+              left = Math.min(anchor.ch, head.ch),
+              bottom = Math.max(anchor.line, head.line),
+              right = Math.max(anchor.ch, head.ch) + 1;
+          var height = bottom - top + 1;
+          var primary = head.line == top ? 0 : height - 1;
+          var ranges = [];
+          for (var i = 0; i < height; i++) {
+            ranges.push({
+              anchor: Pos(top + i, left),
+              head: Pos(top + i, right)
+            });
+          }
+          return {
+            ranges: ranges,
+            primary: primary
+          };
+        }
+      }
+      function getHead(cm) {
+        var cur = cm.getCursor('head');
+        if (cm.getSelection().length == 1) {
+          // Small corner case when only 1 character is selected. The "real"
+          // head is the left of head and anchor.
+          cur = cursorMin(cur, cm.getCursor('anchor'));
+        }
+        return cur;
+      }
+  
+      /**
+       * If moveHead is set to false, the CodeMirror selection will not be
+       * touched. The caller assumes the responsibility of putting the cursor
+      * in the right place.
+       */
+      function exitVisualMode(cm, moveHead) {
+        var vim = cm.state.vim;
+        if (moveHead !== false) {
+          cm.setCursor(clipCursorToContent(cm, vim.sel.head));
+        }
+        updateLastSelection(cm, vim);
+        vim.visualMode = false;
+        vim.visualLine = false;
+        vim.visualBlock = false;
+        CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+        clearFakeCursor(vim);
+      }
+  
+      // Remove any trailing newlines from the selection. For
+      // example, with the caret at the start of the last word on the line,
+      // 'dw' should word, but not the newline, while 'w' should advance the
+      // caret to the first character of the next line.
+      function clipToLine(cm, curStart, curEnd) {
+        var selection = cm.getRange(curStart, curEnd);
+        // Only clip if the selection ends with trailing newline + whitespace
+        if (/\n\s*$/.test(selection)) {
+          var lines = selection.split('\n');
+          // We know this is all whitespace.
+          lines.pop();
+  
+          // Cases:
+          // 1. Last word is an empty line - do not clip the trailing '\n'
+          // 2. Last word is not an empty line - clip the trailing '\n'
+          var line;
+          // Find the line containing the last word, and clip all whitespace up
+          // to it.
+          for (var line = lines.pop(); lines.length > 0 && line && isWhiteSpaceString(line); line = lines.pop()) {
+            curEnd.line--;
+            curEnd.ch = 0;
+          }
+          // If the last word is not an empty line, clip an additional newline
+          if (line) {
+            curEnd.line--;
+            curEnd.ch = lineLength(cm, curEnd.line);
+          } else {
+            curEnd.ch = 0;
+          }
+        }
+      }
+  
+      // Expand the selection to line ends.
+      function expandSelectionToLine(_cm, curStart, curEnd) {
+        curStart.ch = 0;
+        curEnd.ch = 0;
+        curEnd.line++;
+      }
+  
+      function findFirstNonWhiteSpaceCharacter(text) {
+        if (!text) {
+          return 0;
+        }
+        var firstNonWS = text.search(/\S/);
+        return firstNonWS == -1 ? text.length : firstNonWS;
+      }
+  
+      function expandWordUnderCursor(cm, inclusive, _forward, bigWord, noSymbol) {
+        var cur = getHead(cm);
+        var line = cm.getLine(cur.line);
+        var idx = cur.ch;
+  
+        // Seek to first word or non-whitespace character, depending on if
+        // noSymbol is true.
+        var test = noSymbol ? wordCharTest[0] : bigWordCharTest [0];
+        while (!test(line.charAt(idx))) {
+          idx++;
+          if (idx >= line.length) { return null; }
+        }
+  
+        if (bigWord) {
+          test = bigWordCharTest[0];
+        } else {
+          test = wordCharTest[0];
+          if (!test(line.charAt(idx))) {
+            test = wordCharTest[1];
+          }
+        }
+  
+        var end = idx, start = idx;
+        while (test(line.charAt(end)) && end < line.length) { end++; }
+        while (test(line.charAt(start)) && start >= 0) { start--; }
+        start++;
+  
+        if (inclusive) {
+          // If present, include all whitespace after word.
+          // Otherwise, include all whitespace before word, except indentation.
+          var wordEnd = end;
+          while (/\s/.test(line.charAt(end)) && end < line.length) { end++; }
+          if (wordEnd == end) {
+            var wordStart = start;
+            while (/\s/.test(line.charAt(start - 1)) && start > 0) { start--; }
+            if (!start) { start = wordStart; }
+          }
+        }
+        return { start: Pos(cur.line, start), end: Pos(cur.line, end) };
+      }
+  
+      function recordJumpPosition(cm, oldCur, newCur) {
+        if (!cursorEqual(oldCur, newCur)) {
+          vimGlobalState.jumpList.add(cm, oldCur, newCur);
+        }
+      }
+  
+      function recordLastCharacterSearch(increment, args) {
+          vimGlobalState.lastCharacterSearch.increment = increment;
+          vimGlobalState.lastCharacterSearch.forward = args.forward;
+          vimGlobalState.lastCharacterSearch.selectedCharacter = args.selectedCharacter;
+      }
+  
+      var symbolToMode = {
+          '(': 'bracket', ')': 'bracket', '{': 'bracket', '}': 'bracket',
+          '[': 'section', ']': 'section',
+          '*': 'comment', '/': 'comment',
+          'm': 'method', 'M': 'method',
+          '#': 'preprocess'
+      };
+      var findSymbolModes = {
+        bracket: {
+          isComplete: function(state) {
+            if (state.nextCh === state.symb) {
+              state.depth++;
+              if (state.depth >= 1)return true;
+            } else if (state.nextCh === state.reverseSymb) {
+              state.depth--;
+            }
+            return false;
+          }
+        },
+        section: {
+          init: function(state) {
+            state.curMoveThrough = true;
+            state.symb = (state.forward ? ']' : '[') === state.symb ? '{' : '}';
+          },
+          isComplete: function(state) {
+            return state.index === 0 && state.nextCh === state.symb;
+          }
+        },
+        comment: {
+          isComplete: function(state) {
+            var found = state.lastCh === '*' && state.nextCh === '/';
+            state.lastCh = state.nextCh;
+            return found;
+          }
+        },
+        // TODO: The original Vim implementation only operates on level 1 and 2.
+        // The current implementation doesn't check for code block level and
+        // therefore it operates on any levels.
+        method: {
+          init: function(state) {
+            state.symb = (state.symb === 'm' ? '{' : '}');
+            state.reverseSymb = state.symb === '{' ? '}' : '{';
+          },
+          isComplete: function(state) {
+            if (state.nextCh === state.symb)return true;
+            return false;
+          }
+        },
+        preprocess: {
+          init: function(state) {
+            state.index = 0;
+          },
+          isComplete: function(state) {
+            if (state.nextCh === '#') {
+              var token = state.lineText.match(/#(\w+)/)[1];
+              if (token === 'endif') {
+                if (state.forward && state.depth === 0) {
+                  return true;
+                }
+                state.depth++;
+              } else if (token === 'if') {
+                if (!state.forward && state.depth === 0) {
+                  return true;
+                }
+                state.depth--;
+              }
+              if (token === 'else' && state.depth === 0)return true;
+            }
+            return false;
+          }
+        }
+      };
+      function findSymbol(cm, repeat, forward, symb) {
+        var cur = copyCursor(cm.getCursor());
+        var increment = forward ? 1 : -1;
+        var endLine = forward ? cm.lineCount() : -1;
+        var curCh = cur.ch;
+        var line = cur.line;
+        var lineText = cm.getLine(line);
+        var state = {
+          lineText: lineText,
+          nextCh: lineText.charAt(curCh),
+          lastCh: null,
+          index: curCh,
+          symb: symb,
+          reverseSymb: (forward ?  { ')': '(', '}': '{' } : { '(': ')', '{': '}' })[symb],
+          forward: forward,
+          depth: 0,
+          curMoveThrough: false
+        };
+        var mode = symbolToMode[symb];
+        if (!mode)return cur;
+        var init = findSymbolModes[mode].init;
+        var isComplete = findSymbolModes[mode].isComplete;
+        if (init) { init(state); }
+        while (line !== endLine && repeat) {
+          state.index += increment;
+          state.nextCh = state.lineText.charAt(state.index);
+          if (!state.nextCh) {
+            line += increment;
+            state.lineText = cm.getLine(line) || '';
+            if (increment > 0) {
+              state.index = 0;
+            } else {
+              var lineLen = state.lineText.length;
+              state.index = (lineLen > 0) ? (lineLen-1) : 0;
+            }
+            state.nextCh = state.lineText.charAt(state.index);
+          }
+          if (isComplete(state)) {
+            cur.line = line;
+            cur.ch = state.index;
+            repeat--;
+          }
+        }
+        if (state.nextCh || state.curMoveThrough) {
+          return Pos(line, state.index);
+        }
+        return cur;
+      }
+  
+      /*
+       * Returns the boundaries of the next word. If the cursor in the middle of
+       * the word, then returns the boundaries of the current word, starting at
+       * the cursor. If the cursor is at the start/end of a word, and we are going
+       * forward/backward, respectively, find the boundaries of the next word.
+       *
+       * @param {CodeMirror} cm CodeMirror object.
+       * @param {Cursor} cur The cursor position.
+       * @param {boolean} forward True to search forward. False to search
+       *     backward.
+       * @param {boolean} bigWord True if punctuation count as part of the word.
+       *     False if only [a-zA-Z0-9] characters count as part of the word.
+       * @param {boolean} emptyLineIsWord True if empty lines should be treated
+       *     as words.
+       * @return {Object{from:number, to:number, line: number}} The boundaries of
+       *     the word, or null if there are no more words.
+       */
+      function findWord(cm, cur, forward, bigWord, emptyLineIsWord) {
+        var lineNum = cur.line;
+        var pos = cur.ch;
+        var line = cm.getLine(lineNum);
+        var dir = forward ? 1 : -1;
+        var charTests = bigWord ? bigWordCharTest: wordCharTest;
+  
+        if (emptyLineIsWord && line == '') {
+          lineNum += dir;
+          line = cm.getLine(lineNum);
+          if (!isLine(cm, lineNum)) {
+            return null;
+          }
+          pos = (forward) ? 0 : line.length;
+        }
+  
+        while (true) {
+          if (emptyLineIsWord && line == '') {
+            return { from: 0, to: 0, line: lineNum };
+          }
+          var stop = (dir > 0) ? line.length : -1;
+          var wordStart = stop, wordEnd = stop;
+          // Find bounds of next word.
+          while (pos != stop) {
+            var foundWord = false;
+            for (var i = 0; i < charTests.length && !foundWord; ++i) {
+              if (charTests[i](line.charAt(pos))) {
+                wordStart = pos;
+                // Advance to end of word.
+                while (pos != stop && charTests[i](line.charAt(pos))) {
+                  pos += dir;
+                }
+                wordEnd = pos;
+                foundWord = wordStart != wordEnd;
+                if (wordStart == cur.ch && lineNum == cur.line &&
+                    wordEnd == wordStart + dir) {
+                  // We started at the end of a word. Find the next one.
+                  continue;
+                } else {
+                  return {
+                    from: Math.min(wordStart, wordEnd + 1),
+                    to: Math.max(wordStart, wordEnd),
+                    line: lineNum };
+                }
+              }
+            }
+            if (!foundWord) {
+              pos += dir;
+            }
+          }
+          // Advance to next/prev line.
+          lineNum += dir;
+          if (!isLine(cm, lineNum)) {
+            return null;
+          }
+          line = cm.getLine(lineNum);
+          pos = (dir > 0) ? 0 : line.length;
+        }
+      }
+  
+      /**
+       * @param {CodeMirror} cm CodeMirror object.
+       * @param {Pos} cur The position to start from.
+       * @param {int} repeat Number of words to move past.
+       * @param {boolean} forward True to search forward. False to search
+       *     backward.
+       * @param {boolean} wordEnd True to move to end of word. False to move to
+       *     beginning of word.
+       * @param {boolean} bigWord True if punctuation count as part of the word.
+       *     False if only alphabet characters count as part of the word.
+       * @return {Cursor} The position the cursor should move to.
+       */
+      function moveToWord(cm, cur, repeat, forward, wordEnd, bigWord) {
+        var curStart = copyCursor(cur);
+        var words = [];
+        if (forward && !wordEnd || !forward && wordEnd) {
+          repeat++;
+        }
+        // For 'e', empty lines are not considered words, go figure.
+        var emptyLineIsWord = !(forward && wordEnd);
+        for (var i = 0; i < repeat; i++) {
+          var word = findWord(cm, cur, forward, bigWord, emptyLineIsWord);
+          if (!word) {
+            var eodCh = lineLength(cm, cm.lastLine());
+            words.push(forward
+                ? {line: cm.lastLine(), from: eodCh, to: eodCh}
+                : {line: 0, from: 0, to: 0});
+            break;
+          }
+          words.push(word);
+          cur = Pos(word.line, forward ? (word.to - 1) : word.from);
+        }
+        var shortCircuit = words.length != repeat;
+        var firstWord = words[0];
+        var lastWord = words.pop();
+        if (forward && !wordEnd) {
+          // w
+          if (!shortCircuit && (firstWord.from != curStart.ch || firstWord.line != curStart.line)) {
+            // We did not start in the middle of a word. Discard the extra word at the end.
+            lastWord = words.pop();
+          }
+          return Pos(lastWord.line, lastWord.from);
+        } else if (forward && wordEnd) {
+          return Pos(lastWord.line, lastWord.to - 1);
+        } else if (!forward && wordEnd) {
+          // ge
+          if (!shortCircuit && (firstWord.to != curStart.ch || firstWord.line != curStart.line)) {
+            // We did not start in the middle of a word. Discard the extra word at the end.
+            lastWord = words.pop();
+          }
+          return Pos(lastWord.line, lastWord.to);
+        } else {
+          // b
+          return Pos(lastWord.line, lastWord.from);
+        }
+      }
+  
+      function moveToCharacter(cm, repeat, forward, character) {
+        var cur = cm.getCursor();
+        var start = cur.ch;
+        var idx;
+        for (var i = 0; i < repeat; i ++) {
+          var line = cm.getLine(cur.line);
+          idx = charIdxInLine(start, line, character, forward, true);
+          if (idx == -1) {
+            return null;
+          }
+          start = idx;
+        }
+        return Pos(cm.getCursor().line, idx);
+      }
+  
+      function moveToColumn(cm, repeat) {
+        // repeat is always >= 1, so repeat - 1 always corresponds
+        // to the column we want to go to.
+        var line = cm.getCursor().line;
+        return clipCursorToContent(cm, Pos(line, repeat - 1));
+      }
+  
+      function updateMark(cm, vim, markName, pos) {
+        if (!inArray(markName, validMarks)) {
+          return;
+        }
+        if (vim.marks[markName]) {
+          vim.marks[markName].clear();
+        }
+        vim.marks[markName] = cm.setBookmark(pos);
+      }
+  
+      function charIdxInLine(start, line, character, forward, includeChar) {
+        // Search for char in line.
+        // motion_options: {forward, includeChar}
+        // If includeChar = true, include it too.
+        // If forward = true, search forward, else search backwards.
+        // If char is not found on this line, do nothing
+        var idx;
+        if (forward) {
+          idx = line.indexOf(character, start + 1);
+          if (idx != -1 && !includeChar) {
+            idx -= 1;
+          }
+        } else {
+          idx = line.lastIndexOf(character, start - 1);
+          if (idx != -1 && !includeChar) {
+            idx += 1;
+          }
+        }
+        return idx;
+      }
+  
+      function findParagraph(cm, head, repeat, dir, inclusive) {
+        var line = head.line;
+        var min = cm.firstLine();
+        var max = cm.lastLine();
+        var start, end, i = line;
+        function isEmpty(i) { return !cm.getLine(i); }
+        function isBoundary(i, dir, any) {
+          if (any) { return isEmpty(i) != isEmpty(i + dir); }
+          return !isEmpty(i) && isEmpty(i + dir);
+        }
+        if (dir) {
+          while (min <= i && i <= max && repeat > 0) {
+            if (isBoundary(i, dir)) { repeat--; }
+            i += dir;
+          }
+          return new Pos(i, 0);
+        }
+  
+        var vim = cm.state.vim;
+        if (vim.visualLine && isBoundary(line, 1, true)) {
+          var anchor = vim.sel.anchor;
+          if (isBoundary(anchor.line, -1, true)) {
+            if (!inclusive || anchor.line != line) {
+              line += 1;
+            }
+          }
+        }
+        var startState = isEmpty(line);
+        for (i = line; i <= max && repeat; i++) {
+          if (isBoundary(i, 1, true)) {
+            if (!inclusive || isEmpty(i) != startState) {
+              repeat--;
+            }
+          }
+        }
+        end = new Pos(i, 0);
+        // select boundary before paragraph for the last one
+        if (i > max && !startState) { startState = true; }
+        else { inclusive = false; }
+        for (i = line; i > min; i--) {
+          if (!inclusive || isEmpty(i) == startState || i == line) {
+            if (isBoundary(i, -1, true)) { break; }
+          }
+        }
+        start = new Pos(i, 0);
+        return { start: start, end: end };
+      }
+  
+      function findSentence(cm, cur, repeat, dir) {
+  
+        /*
+          Takes an index object
+          {
+            line: the line string,
+            ln: line number,
+            pos: index in line,
+            dir: direction of traversal (-1 or 1)
+          }
+          and modifies the line, ln, and pos members to represent the
+          next valid position or sets them to null if there are
+          no more valid positions.
+         */
+        function nextChar(cm, idx) {
+          if (idx.pos + idx.dir < 0 || idx.pos + idx.dir >= idx.line.length) {
+            idx.ln += idx.dir;
+            if (!isLine(cm, idx.ln)) {
+              idx.line = null;
+              idx.ln = null;
+              idx.pos = null;
+              return;
+            }
+            idx.line = cm.getLine(idx.ln);
+            idx.pos = (idx.dir > 0) ? 0 : idx.line.length - 1;
+          }
+          else {
+            idx.pos += idx.dir;
+          }
+        }
+  
+        /*
+          Performs one iteration of traversal in forward direction
+          Returns an index object of the new location
+         */
+        function forward(cm, ln, pos, dir) {
+          var line = cm.getLine(ln);
+          var stop = (line === "");
+  
+          var curr = {
+            line: line,
+            ln: ln,
+            pos: pos,
+            dir: dir,
+          }
+  
+          var last_valid = {
+            ln: curr.ln,
+            pos: curr.pos,
+          }
+  
+          var skip_empty_lines = (curr.line === "");
+  
+          // Move one step to skip character we start on
+          nextChar(cm, curr);
+  
+          while (curr.line !== null) {
+            last_valid.ln = curr.ln;
+            last_valid.pos = curr.pos;
+  
+            if (curr.line === "" && !skip_empty_lines) {
+              return { ln: curr.ln, pos: curr.pos, };
+            }
+            else if (stop && curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
+              return { ln: curr.ln, pos: curr.pos, };
+            }
+            else if (isEndOfSentenceSymbol(curr.line[curr.pos])
+              && !stop
+              && (curr.pos === curr.line.length - 1
+                || isWhiteSpaceString(curr.line[curr.pos + 1]))) {
+              stop = true;
+            }
+  
+            nextChar(cm, curr);
+          }
+  
+          /*
+            Set the position to the last non whitespace character on the last
+            valid line in the case that we reach the end of the document.
+          */
+          var line = cm.getLine(last_valid.ln);
+          last_valid.pos = 0;
+          for(var i = line.length - 1; i >= 0; --i) {
+            if (!isWhiteSpaceString(line[i])) {
+              last_valid.pos = i;
+              break;
+            }
+          }
+  
+          return last_valid;
+  
+        }
+  
+        /*
+          Performs one iteration of traversal in reverse direction
+          Returns an index object of the new location
+         */
+        function reverse(cm, ln, pos, dir) {
+          var line = cm.getLine(ln);
+  
+          var curr = {
+            line: line,
+            ln: ln,
+            pos: pos,
+            dir: dir,
+          }
+  
+          var last_valid = {
+            ln: curr.ln,
+            pos: null,
+          };
+  
+          var skip_empty_lines = (curr.line === "");
+  
+          // Move one step to skip character we start on
+          nextChar(cm, curr);
+  
+          while (curr.line !== null) {
+  
+            if (curr.line === "" && !skip_empty_lines) {
+              if (last_valid.pos !== null) {
+                return last_valid;
+              }
+              else {
+                return { ln: curr.ln, pos: curr.pos };
+              }
+            }
+            else if (isEndOfSentenceSymbol(curr.line[curr.pos])
+                && last_valid.pos !== null
+                && !(curr.ln === last_valid.ln && curr.pos + 1 === last_valid.pos)) {
+              return last_valid;
+            }
+            else if (curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
+              skip_empty_lines = false;
+              last_valid = { ln: curr.ln, pos: curr.pos }
+            }
+  
+            nextChar(cm, curr);
+          }
+  
+          /*
+            Set the position to the first non whitespace character on the last
+            valid line in the case that we reach the beginning of the document.
+          */
+          var line = cm.getLine(last_valid.ln);
+          last_valid.pos = 0;
+          for(var i = 0; i < line.length; ++i) {
+            if (!isWhiteSpaceString(line[i])) {
+              last_valid.pos = i;
+              break;
+            }
+          }
+          return last_valid;
+        }
+  
+        var curr_index = {
+          ln: cur.line,
+          pos: cur.ch,
+        };
+  
+        while (repeat > 0) {
+          if (dir < 0) {
+            curr_index = reverse(cm, curr_index.ln, curr_index.pos, dir);
+          }
+          else {
+            curr_index = forward(cm, curr_index.ln, curr_index.pos, dir);
+          }
+          repeat--;
+        }
+  
+        return Pos(curr_index.ln, curr_index.pos);
+      }
+  
+      // TODO: perhaps this finagling of start and end positions belonds
+      // in codemirror/replaceRange?
+      function selectCompanionObject(cm, head, symb, inclusive) {
+        var cur = head, start, end;
+  
+        var bracketRegexp = ({
+          '(': /[()]/, ')': /[()]/,
+          '[': /[[\]]/, ']': /[[\]]/,
+          '{': /[{}]/, '}': /[{}]/,
+          '<': /[<>]/, '>': /[<>]/})[symb];
+        var openSym = ({
+          '(': '(', ')': '(',
+          '[': '[', ']': '[',
+          '{': '{', '}': '{',
+          '<': '<', '>': '<'})[symb];
+        var curChar = cm.getLine(cur.line).charAt(cur.ch);
+        // Due to the behavior of scanForBracket, we need to add an offset if the
+        // cursor is on a matching open bracket.
+        var offset = curChar === openSym ? 1 : 0;
+  
+        start = cm.scanForBracket(Pos(cur.line, cur.ch + offset), -1, undefined, {'bracketRegex': bracketRegexp});
+        end = cm.scanForBracket(Pos(cur.line, cur.ch + offset), 1, undefined, {'bracketRegex': bracketRegexp});
+  
+        if (!start || !end) {
+          return { start: cur, end: cur };
+        }
+  
+        start = start.pos;
+        end = end.pos;
+  
+        if ((start.line == end.line && start.ch > end.ch)
+            || (start.line > end.line)) {
+          var tmp = start;
+          start = end;
+          end = tmp;
+        }
+  
+        if (inclusive) {
+          end.ch += 1;
+        } else {
+          start.ch += 1;
+        }
+  
+        return { start: start, end: end };
+      }
+  
+      // Takes in a symbol and a cursor and tries to simulate text objects that
+      // have identical opening and closing symbols
+      // TODO support across multiple lines
+      function findBeginningAndEnd(cm, head, symb, inclusive) {
+        var cur = copyCursor(head);
+        var line = cm.getLine(cur.line);
+        var chars = line.split('');
+        var start, end, i, len;
+        var firstIndex = chars.indexOf(symb);
+  
+        // the decision tree is to always look backwards for the beginning first,
+        // but if the cursor is in front of the first instance of the symb,
+        // then move the cursor forward
+        if (cur.ch < firstIndex) {
+          cur.ch = firstIndex;
+          // Why is this line even here???
+          // cm.setCursor(cur.line, firstIndex+1);
+        }
+        // otherwise if the cursor is currently on the closing symbol
+        else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
+          end = cur.ch; // assign end to the current cursor
+          --cur.ch; // make sure to look backwards
+        }
+  
+        // if we're currently on the symbol, we've got a start
+        if (chars[cur.ch] == symb && !end) {
+          start = cur.ch + 1; // assign start to ahead of the cursor
+        } else {
+          // go backwards to find the start
+          for (i = cur.ch; i > -1 && !start; i--) {
+            if (chars[i] == symb) {
+              start = i + 1;
+            }
+          }
+        }
+  
+        // look forwards for the end symbol
+        if (start && !end) {
+          for (i = start, len = chars.length; i < len && !end; i++) {
+            if (chars[i] == symb) {
+              end = i;
+            }
+          }
+        }
+  
+        // nothing found
+        if (!start || !end) {
+          return { start: cur, end: cur };
+        }
+  
+        // include the symbols
+        if (inclusive) {
+          --start; ++end;
+        }
+  
+        return {
+          start: Pos(cur.line, start),
+          end: Pos(cur.line, end)
+        };
+      }
+  
+      // Search functions
+      defineOption('pcre', true, 'boolean');
+      function SearchState() {}
+      SearchState.prototype = {
+        getQuery: function() {
+          return vimGlobalState.query;
+        },
+        setQuery: function(query) {
+          vimGlobalState.query = query;
+        },
+        getOverlay: function() {
+          return this.searchOverlay;
+        },
+        setOverlay: function(overlay) {
+          this.searchOverlay = overlay;
+        },
+        isReversed: function() {
+          return vimGlobalState.isReversed;
+        },
+        setReversed: function(reversed) {
+          vimGlobalState.isReversed = reversed;
+        },
+        getScrollbarAnnotate: function() {
+          return this.annotate;
+        },
+        setScrollbarAnnotate: function(annotate) {
+          this.annotate = annotate;
+        }
+      };
+      function getSearchState(cm) {
+        var vim = cm.state.vim;
+        return vim.searchState_ || (vim.searchState_ = new SearchState());
+      }
+      function dialog(cm, template, shortText, onClose, options) {
+        if (cm.openDialog) {
+          cm.openDialog(template, onClose, { bottom: true, value: options.value,
+              onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
+              selectValueOnOpen: false});
+        }
+        else {
+          onClose(prompt(shortText, ''));
+        }
+      }
+      function splitBySlash(argString) {
+        return splitBySeparator(argString, '/');
+      }
+  
+      function findUnescapedSlashes(argString) {
+        return findUnescapedSeparators(argString, '/');
+      }
+  
+      function splitBySeparator(argString, separator) {
+        var slashes = findUnescapedSeparators(argString, separator) || [];
+        if (!slashes.length) return [];
+        var tokens = [];
+        // in case of strings like foo/bar
+        if (slashes[0] !== 0) return;
+        for (var i = 0; i < slashes.length; i++) {
+          if (typeof slashes[i] == 'number')
+            tokens.push(argString.substring(slashes[i] + 1, slashes[i+1]));
+        }
+        return tokens;
+      }
+  
+      function findUnescapedSeparators(str, separator) {
+        if (!separator)
+          separator = '/';
+  
+        var escapeNextChar = false;
+        var slashes = [];
+        for (var i = 0; i < str.length; i++) {
+          var c = str.charAt(i);
+          if (!escapeNextChar && c == separator) {
+            slashes.push(i);
+          }
+          escapeNextChar = !escapeNextChar && (c == '\\');
+        }
+        return slashes;
+      }
+  
+      // Translates a search string from ex (vim) syntax into javascript form.
+      function translateRegex(str) {
+        // When these match, add a '\' if unescaped or remove one if escaped.
+        var specials = '|(){';
+        // Remove, but never add, a '\' for these.
+        var unescape = '}';
+        var escapeNextChar = false;
+        var out = [];
+        for (var i = -1; i < str.length; i++) {
+          var c = str.charAt(i) || '';
+          var n = str.charAt(i+1) || '';
+          var specialComesNext = (n && specials.indexOf(n) != -1);
+          if (escapeNextChar) {
+            if (c !== '\\' || !specialComesNext) {
+              out.push(c);
+            }
+            escapeNextChar = false;
+          } else {
+            if (c === '\\') {
+              escapeNextChar = true;
+              // Treat the unescape list as special for removing, but not adding '\'.
+              if (n && unescape.indexOf(n) != -1) {
+                specialComesNext = true;
+              }
+              // Not passing this test means removing a '\'.
+              if (!specialComesNext || n === '\\') {
+                out.push(c);
+              }
+            } else {
+              out.push(c);
+              if (specialComesNext && n !== '\\') {
+                out.push('\\');
+              }
+            }
+          }
+        }
+        return out.join('');
+      }
+  
+      // Translates the replace part of a search and replace from ex (vim) syntax into
+      // javascript form.  Similar to translateRegex, but additionally fixes back references
+      // (translates '\[0..9]' to '$[0..9]') and follows different rules for escaping '$'.
+      var charUnescapes = {'\\n': '\n', '\\r': '\r', '\\t': '\t'};
+      function translateRegexReplace(str) {
+        var escapeNextChar = false;
+        var out = [];
+        for (var i = -1; i < str.length; i++) {
+          var c = str.charAt(i) || '';
+          var n = str.charAt(i+1) || '';
+          if (charUnescapes[c + n]) {
+            out.push(charUnescapes[c+n]);
+            i++;
+          } else if (escapeNextChar) {
+            // At any point in the loop, escapeNextChar is true if the previous
+            // character was a '\' and was not escaped.
+            out.push(c);
+            escapeNextChar = false;
+          } else {
+            if (c === '\\') {
+              escapeNextChar = true;
+              if ((isNumber(n) || n === '$')) {
+                out.push('$');
+              } else if (n !== '/' && n !== '\\') {
+                out.push('\\');
+              }
+            } else {
+              if (c === '$') {
+                out.push('$');
+              }
+              out.push(c);
+              if (n === '/') {
+                out.push('\\');
+              }
+            }
+          }
+        }
+        return out.join('');
+      }
+  
+      // Unescape \ and / in the replace part, for PCRE mode.
+      var unescapes = {'\\/': '/', '\\\\': '\\', '\\n': '\n', '\\r': '\r', '\\t': '\t', '\\&':'&'};
+      function unescapeRegexReplace(str) {
+        var stream = new CodeMirror.StringStream(str);
+        var output = [];
+        while (!stream.eol()) {
+          // Search for \.
+          while (stream.peek() && stream.peek() != '\\') {
+            output.push(stream.next());
+          }
+          var matched = false;
+          for (var matcher in unescapes) {
+            if (stream.match(matcher, true)) {
+              matched = true;
+              output.push(unescapes[matcher]);
+              break;
+            }
+          }
+          if (!matched) {
+            // Don't change anything
+            output.push(stream.next());
+          }
+        }
+        return output.join('');
+      }
+  
+      /**
+       * Extract the regular expression from the query and return a Regexp object.
+       * Returns null if the query is blank.
+       * If ignoreCase is passed in, the Regexp object will have the 'i' flag set.
+       * If smartCase is passed in, and the query contains upper case letters,
+       *   then ignoreCase is overridden, and the 'i' flag will not be set.
+       * If the query contains the /i in the flag part of the regular expression,
+       *   then both ignoreCase and smartCase are ignored, and 'i' will be passed
+       *   through to the Regex object.
+       */
+      function parseQuery(query, ignoreCase, smartCase) {
+        // First update the last search register
+        var lastSearchRegister = vimGlobalState.registerController.getRegister('/');
+        lastSearchRegister.setText(query);
+        // Check if the query is already a regex.
+        if (query instanceof RegExp) { return query; }
+        // First try to extract regex + flags from the input. If no flags found,
+        // extract just the regex. IE does not accept flags directly defined in
+        // the regex string in the form /regex/flags
+        var slashes = findUnescapedSlashes(query);
+        var regexPart;
+        var forceIgnoreCase;
+        if (!slashes.length) {
+          // Query looks like 'regexp'
+          regexPart = query;
+        } else {
+          // Query looks like 'regexp/...'
+          regexPart = query.substring(0, slashes[0]);
+          var flagsPart = query.substring(slashes[0]);
+          forceIgnoreCase = (flagsPart.indexOf('i') != -1);
+        }
+        if (!regexPart) {
+          return null;
+        }
+        if (!getOption('pcre')) {
+          regexPart = translateRegex(regexPart);
+        }
+        if (smartCase) {
+          ignoreCase = (/^[^A-Z]*$/).test(regexPart);
+        }
+        var regexp = new RegExp(regexPart,
+            (ignoreCase || forceIgnoreCase) ? 'i' : undefined);
+        return regexp;
+      }
+      function showConfirm(cm, text) {
+        if (cm.openNotification) {
+          cm.openNotification('<span style="color: red">' + text + '</span>',
+                              {bottom: true, duration: 5000});
+        } else {
+          alert(text);
+        }
+      }
+      function makePrompt(prefix, desc) {
+        var raw = '<span style="font-family: monospace; white-space: pre">' +
+            (prefix || "") + '<input type="text" autocorrect="off" ' +
+            'autocapitalize="off" spellcheck="false"></span>';
+        if (desc)
+          raw += ' <span style="color: #888">' + desc + '</span>';
+        return raw;
+      }
+      var searchPromptDesc = '(Javascript regexp)';
+      function showPrompt(cm, options) {
+        var shortText = (options.prefix || '') + ' ' + (options.desc || '');
+        var prompt = makePrompt(options.prefix, options.desc);
+        dialog(cm, prompt, shortText, options.onClose, options);
+      }
+      function regexEqual(r1, r2) {
+        if (r1 instanceof RegExp && r2 instanceof RegExp) {
+            var props = ['global', 'multiline', 'ignoreCase', 'source'];
+            for (var i = 0; i < props.length; i++) {
+                var prop = props[i];
+                if (r1[prop] !== r2[prop]) {
+                    return false;
+                }
+            }
+            return true;
+        }
+        return false;
+      }
+      // Returns true if the query is valid.
+      function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
+        if (!rawQuery) {
+          return;
+        }
+        var state = getSearchState(cm);
+        var query = parseQuery(rawQuery, !!ignoreCase, !!smartCase);
+        if (!query) {
+          return;
+        }
+        highlightSearchMatches(cm, query);
+        if (regexEqual(query, state.getQuery())) {
+          return query;
+        }
+        state.setQuery(query);
+        return query;
+      }
+      function searchOverlay(query) {
+        if (query.source.charAt(0) == '^') {
+          var matchSol = true;
+        }
+        return {
+          token: function(stream) {
+            if (matchSol && !stream.sol()) {
+              stream.skipToEnd();
+              return;
+            }
+            var match = stream.match(query, false);
+            if (match) {
+              if (match[0].length == 0) {
+                // Matched empty string, skip to next.
+                stream.next();
+                return 'searching';
+              }
+              if (!stream.sol()) {
+                // Backtrack 1 to match \b
+                stream.backUp(1);
+                if (!query.exec(stream.next() + match[0])) {
+                  stream.next();
+                  return null;
+                }
+              }
+              stream.match(query);
+              return 'searching';
+            }
+            while (!stream.eol()) {
+              stream.next();
+              if (stream.match(query, false)) break;
+            }
+          },
+          query: query
+        };
+      }
+      var highlightTimeout = 0;
+      function highlightSearchMatches(cm, query) {
+        clearTimeout(highlightTimeout);
+        highlightTimeout = setTimeout(function() {
+          var searchState = getSearchState(cm);
+          var overlay = searchState.getOverlay();
+          if (!overlay || query != overlay.query) {
+            if (overlay) {
+              cm.removeOverlay(overlay);
+            }
+            overlay = searchOverlay(query);
+            cm.addOverlay(overlay);
+            if (cm.showMatchesOnScrollbar) {
+              if (searchState.getScrollbarAnnotate()) {
+                searchState.getScrollbarAnnotate().clear();
+              }
+              searchState.setScrollbarAnnotate(cm.showMatchesOnScrollbar(query));
+            }
+            searchState.setOverlay(overlay);
+          }
+        }, 50);
+      }
+      function findNext(cm, prev, query, repeat) {
+        if (repeat === undefined) { repeat = 1; }
+        return cm.operation(function() {
+          var pos = cm.getCursor();
+          var cursor = cm.getSearchCursor(query, pos);
+          for (var i = 0; i < repeat; i++) {
+            var found = cursor.find(prev);
+            if (i == 0 && found && cursorEqual(cursor.from(), pos)) { found = cursor.find(prev); }
+            if (!found) {
+              // SearchCursor may have returned null because it hit EOF, wrap
+              // around and try again.
+              cursor = cm.getSearchCursor(query,
+                  (prev) ? Pos(cm.lastLine()) : Pos(cm.firstLine(), 0) );
+              if (!cursor.find(prev)) {
+                return;
+              }
+            }
+          }
+          return cursor.from();
+        });
+      }
+      function clearSearchHighlight(cm) {
+        var state = getSearchState(cm);
+        cm.removeOverlay(getSearchState(cm).getOverlay());
+        state.setOverlay(null);
+        if (state.getScrollbarAnnotate()) {
+          state.getScrollbarAnnotate().clear();
+          state.setScrollbarAnnotate(null);
+        }
+      }
+      /**
+       * Check if pos is in the specified range, INCLUSIVE.
+       * Range can be specified with 1 or 2 arguments.
+       * If the first range argument is an array, treat it as an array of line
+       * numbers. Match pos against any of the lines.
+       * If the first range argument is a number,
+       *   if there is only 1 range argument, check if pos has the same line
+       *       number
+       *   if there are 2 range arguments, then check if pos is in between the two
+       *       range arguments.
+       */
+      function isInRange(pos, start, end) {
+        if (typeof pos != 'number') {
+          // Assume it is a cursor position. Get the line number.
+          pos = pos.line;
+        }
+        if (start instanceof Array) {
+          return inArray(pos, start);
+        } else {
+          if (end) {
+            return (pos >= start && pos <= end);
+          } else {
+            return pos == start;
+          }
+        }
+      }
+      function getUserVisibleLines(cm) {
+        var scrollInfo = cm.getScrollInfo();
+        var occludeToleranceTop = 6;
+        var occludeToleranceBottom = 10;
+        var from = cm.coordsChar({left:0, top: occludeToleranceTop + scrollInfo.top}, 'local');
+        var bottomY = scrollInfo.clientHeight - occludeToleranceBottom + scrollInfo.top;
+        var to = cm.coordsChar({left:0, top: bottomY}, 'local');
+        return {top: from.line, bottom: to.line};
+      }
+  
+      function getMarkPos(cm, vim, markName) {
+        if (markName == '\'' || markName == '`') {
+          return vimGlobalState.jumpList.find(cm, -1) || Pos(0, 0);
+        } else if (markName == '.') {
+          return getLastEditPos(cm);
+        }
+  
+        var mark = vim.marks[markName];
+        return mark && mark.find();
+      }
+  
+      function getLastEditPos(cm) {
+        var done = cm.doc.history.done;
+        for (var i = done.length; i--;) {
+          if (done[i].changes) {
+            return copyCursor(done[i].changes[0].to);
+          }
+        }
+      }
+  
+      var ExCommandDispatcher = function() {
+        this.buildCommandMap_();
+      };
+      ExCommandDispatcher.prototype = {
+        processCommand: function(cm, input, opt_params) {
+          var that = this;
+          cm.operation(function () {
+            cm.curOp.isVimOp = true;
+            that._processCommand(cm, input, opt_params);
+          });
+        },
+        _processCommand: function(cm, input, opt_params) {
+          var vim = cm.state.vim;
+          var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
+          var previousCommand = commandHistoryRegister.toString();
+          if (vim.visualMode) {
+            exitVisualMode(cm);
+          }
+          var inputStream = new CodeMirror.StringStream(input);
+          // update ": with the latest command whether valid or invalid
+          commandHistoryRegister.setText(input);
+          var params = opt_params || {};
+          params.input = input;
+          try {
+            this.parseInput_(cm, inputStream, params);
+          } catch(e) {
+            showConfirm(cm, e);
+            throw e;
+          }
+          var command;
+          var commandName;
+          if (!params.commandName) {
+            // If only a line range is defined, move to the line.
+            if (params.line !== undefined) {
+              commandName = 'move';
+            }
+          } else {
+            command = this.matchCommand_(params.commandName);
+            if (command) {
+              commandName = command.name;
+              if (command.excludeFromCommandHistory) {
+                commandHistoryRegister.setText(previousCommand);
+              }
+              this.parseCommandArgs_(inputStream, params, command);
+              if (command.type == 'exToKey') {
+                // Handle Ex to Key mapping.
+                for (var i = 0; i < command.toKeys.length; i++) {
+                  CodeMirror.Vim.handleKey(cm, command.toKeys[i], 'mapping');
+                }
+                return;
+              } else if (command.type == 'exToEx') {
+                // Handle Ex to Ex mapping.
+                this.processCommand(cm, command.toInput);
+                return;
+              }
+            }
+          }
+          if (!commandName) {
+            showConfirm(cm, 'Not an editor command ":' + input + '"');
+            return;
+          }
+          try {
+            exCommands[commandName](cm, params);
+            // Possibly asynchronous commands (e.g. substitute, which might have a
+            // user confirmation), are responsible for calling the callback when
+            // done. All others have it taken care of for them here.
+            if ((!command || !command.possiblyAsync) && params.callback) {
+              params.callback();
+            }
+          } catch(e) {
+            showConfirm(cm, e);
+            throw e;
+          }
+        },
+        parseInput_: function(cm, inputStream, result) {
+          inputStream.eatWhile(':');
+          // Parse range.
+          if (inputStream.eat('%')) {
+            result.line = cm.firstLine();
+            result.lineEnd = cm.lastLine();
+          } else {
+            result.line = this.parseLineSpec_(cm, inputStream);
+            if (result.line !== undefined && inputStream.eat(',')) {
+              result.lineEnd = this.parseLineSpec_(cm, inputStream);
+            }
+          }
+  
+          // Parse command name.
+          var commandMatch = inputStream.match(/^(\w+|!!|@@|[!#&*<=>@~])/);
+          if (commandMatch) {
+            result.commandName = commandMatch[1];
+          } else {
+            result.commandName = inputStream.match(/.*/)[0];
+          }
+  
+          return result;
+        },
+        parseLineSpec_: function(cm, inputStream) {
+          var numberMatch = inputStream.match(/^(\d+)/);
+          if (numberMatch) {
+            // Absolute line number plus offset (N+M or N-M) is probably a typo,
+            // not something the user actually wanted. (NB: vim does allow this.)
+            return parseInt(numberMatch[1], 10) - 1;
+          }
+          switch (inputStream.next()) {
+            case '.':
+              return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
+            case '$':
+              return this.parseLineSpecOffset_(inputStream, cm.lastLine());
+            case '\'':
+              var markName = inputStream.next();
+              var markPos = getMarkPos(cm, cm.state.vim, markName);
+              if (!markPos) throw new Error('Mark not set');
+              return this.parseLineSpecOffset_(inputStream, markPos.line);
+            case '-':
+            case '+':
+              inputStream.backUp(1);
+              // Offset is relative to current line if not otherwise specified.
+              return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
+            default:
+              inputStream.backUp(1);
+              return undefined;
+          }
+        },
+        parseLineSpecOffset_: function(inputStream, line) {
+          var offsetMatch = inputStream.match(/^([+-])?(\d+)/);
+          if (offsetMatch) {
+            var offset = parseInt(offsetMatch[2], 10);
+            if (offsetMatch[1] == "-") {
+              line -= offset;
+            } else {
+              line += offset;
+            }
+          }
+          return line;
+        },
+        parseCommandArgs_: function(inputStream, params, command) {
+          if (inputStream.eol()) {
+            return;
+          }
+          params.argString = inputStream.match(/.*/)[0];
+          // Parse command-line arguments
+          var delim = command.argDelimiter || /\s+/;
+          var args = trim(params.argString).split(delim);
+          if (args.length && args[0]) {
+            params.args = args;
+          }
+        },
+        matchCommand_: function(commandName) {
+          // Return the command in the command map that matches the shortest
+          // prefix of the passed in command name. The match is guaranteed to be
+          // unambiguous if the defaultExCommandMap's shortNames are set up
+          // correctly. (see @code{defaultExCommandMap}).
+          for (var i = commandName.length; i > 0; i--) {
+            var prefix = commandName.substring(0, i);
+            if (this.commandMap_[prefix]) {
+              var command = this.commandMap_[prefix];
+              if (command.name.indexOf(commandName) === 0) {
+                return command;
+              }
+            }
+          }
+          return null;
+        },
+        buildCommandMap_: function() {
+          this.commandMap_ = {};
+          for (var i = 0; i < defaultExCommandMap.length; i++) {
+            var command = defaultExCommandMap[i];
+            var key = command.shortName || command.name;
+            this.commandMap_[key] = command;
+          }
+        },
+        map: function(lhs, rhs, ctx) {
+          if (lhs != ':' && lhs.charAt(0) == ':') {
+            if (ctx) { throw Error('Mode not supported for ex mappings'); }
+            var commandName = lhs.substring(1);
+            if (rhs != ':' && rhs.charAt(0) == ':') {
+              // Ex to Ex mapping
+              this.commandMap_[commandName] = {
+                name: commandName,
+                type: 'exToEx',
+                toInput: rhs.substring(1),
+                user: true
+              };
+            } else {
+              // Ex to key mapping
+              this.commandMap_[commandName] = {
+                name: commandName,
+                type: 'exToKey',
+                toKeys: rhs,
+                user: true
+              };
+            }
+          } else {
+            if (rhs != ':' && rhs.charAt(0) == ':') {
+              // Key to Ex mapping.
+              var mapping = {
+                keys: lhs,
+                type: 'keyToEx',
+                exArgs: { input: rhs.substring(1) }
+              };
+              if (ctx) { mapping.context = ctx; }
+              defaultKeymap.unshift(mapping);
+            } else {
+              // Key to key mapping
+              var mapping = {
+                keys: lhs,
+                type: 'keyToKey',
+                toKeys: rhs
+              };
+              if (ctx) { mapping.context = ctx; }
+              defaultKeymap.unshift(mapping);
+            }
+          }
+        },
+        unmap: function(lhs, ctx) {
+          if (lhs != ':' && lhs.charAt(0) == ':') {
+            // Ex to Ex or Ex to key mapping
+            if (ctx) { throw Error('Mode not supported for ex mappings'); }
+            var commandName = lhs.substring(1);
+            if (this.commandMap_[commandName] && this.commandMap_[commandName].user) {
+              delete this.commandMap_[commandName];
+              return;
+            }
+          } else {
+            // Key to Ex or key to key mapping
+            var keys = lhs;
+            for (var i = 0; i < defaultKeymap.length; i++) {
+              if (keys == defaultKeymap[i].keys
+                  && defaultKeymap[i].context === ctx) {
+                defaultKeymap.splice(i, 1);
+                return;
+              }
+            }
+          }
+          throw Error('No such mapping.');
+        }
+      };
+  
+      var exCommands = {
+        colorscheme: function(cm, params) {
+          if (!params.args || params.args.length < 1) {
+            showConfirm(cm, cm.getOption('theme'));
+            return;
+          }
+          cm.setOption('theme', params.args[0]);
+        },
+        map: function(cm, params, ctx) {
+          var mapArgs = params.args;
+          if (!mapArgs || mapArgs.length < 2) {
+            if (cm) {
+              showConfirm(cm, 'Invalid mapping: ' + params.input);
+            }
+            return;
+          }
+          exCommandDispatcher.map(mapArgs[0], mapArgs[1], ctx);
+        },
+        imap: function(cm, params) { this.map(cm, params, 'insert'); },
+        nmap: function(cm, params) { this.map(cm, params, 'normal'); },
+        vmap: function(cm, params) { this.map(cm, params, 'visual'); },
+        unmap: function(cm, params, ctx) {
+          var mapArgs = params.args;
+          if (!mapArgs || mapArgs.length < 1) {
+            if (cm) {
+              showConfirm(cm, 'No such mapping: ' + params.input);
+            }
+            return;
+          }
+          exCommandDispatcher.unmap(mapArgs[0], ctx);
+        },
+        move: function(cm, params) {
+          commandDispatcher.processCommand(cm, cm.state.vim, {
+              type: 'motion',
+              motion: 'moveToLineOrEdgeOfDocument',
+              motionArgs: { forward: false, explicitRepeat: true,
+                linewise: true },
+              repeatOverride: params.line+1});
+        },
+        set: function(cm, params) {
+          var setArgs = params.args;
+          // Options passed through to the setOption/getOption calls. May be passed in by the
+          // local/global versions of the set command
+          var setCfg = params.setCfg || {};
+          if (!setArgs || setArgs.length < 1) {
+            if (cm) {
+              showConfirm(cm, 'Invalid mapping: ' + params.input);
+            }
+            return;
+          }
+          var expr = setArgs[0].split('=');
+          var optionName = expr[0];
+          var value = expr[1];
+          var forceGet = false;
+  
+          if (optionName.charAt(optionName.length - 1) == '?') {
+            // If post-fixed with ?, then the set is actually a get.
+            if (value) { throw Error('Trailing characters: ' + params.argString); }
+            optionName = optionName.substring(0, optionName.length - 1);
+            forceGet = true;
+          }
+          if (value === undefined && optionName.substring(0, 2) == 'no') {
+            // To set boolean options to false, the option name is prefixed with
+            // 'no'.
+            optionName = optionName.substring(2);
+            value = false;
+          }
+  
+          var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
+          if (optionIsBoolean && value == undefined) {
+            // Calling set with a boolean option sets it to true.
+            value = true;
+          }
+          // If no value is provided, then we assume this is a get.
+          if (!optionIsBoolean && value === undefined || forceGet) {
+            var oldValue = getOption(optionName, cm, setCfg);
+            if (oldValue instanceof Error) {
+              showConfirm(cm, oldValue.message);
+            } else if (oldValue === true || oldValue === false) {
+              showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
+            } else {
+              showConfirm(cm, '  ' + optionName + '=' + oldValue);
+            }
+          } else {
+            var setOptionReturn = setOption(optionName, value, cm, setCfg);
+            if (setOptionReturn instanceof Error) {
+              showConfirm(cm, setOptionReturn.message);
+            }
+          }
+        },
+        setlocal: function (cm, params) {
+          // setCfg is passed through to setOption
+          params.setCfg = {scope: 'local'};
+          this.set(cm, params);
+        },
+        setglobal: function (cm, params) {
+          // setCfg is passed through to setOption
+          params.setCfg = {scope: 'global'};
+          this.set(cm, params);
+        },
+        registers: function(cm, params) {
+          var regArgs = params.args;
+          var registers = vimGlobalState.registerController.registers;
+          var regInfo = '----------Registers----------<br><br>';
+          if (!regArgs) {
+            for (var registerName in registers) {
+              var text = registers[registerName].toString();
+              if (text.length) {
+                regInfo += '"' + registerName + '    ' + text + '<br>';
+              }
+            }
+          } else {
+            var registerName;
+            regArgs = regArgs.join('');
+            for (var i = 0; i < regArgs.length; i++) {
+              registerName = regArgs.charAt(i);
+              if (!vimGlobalState.registerController.isValidRegister(registerName)) {
+                continue;
+              }
+              var register = registers[registerName] || new Register();
+              regInfo += '"' + registerName + '    ' + register.toString() + '<br>';
+            }
+          }
+          showConfirm(cm, regInfo);
+        },
+        sort: function(cm, params) {
+          var reverse, ignoreCase, unique, number, pattern;
+          function parseArgs() {
+            if (params.argString) {
+              var args = new CodeMirror.StringStream(params.argString);
+              if (args.eat('!')) { reverse = true; }
+              if (args.eol()) { return; }
+              if (!args.eatSpace()) { return 'Invalid arguments'; }
+              var opts = args.match(/([dinuox]+)?\s*(\/.+\/)?\s*/);
+              if (!opts && !args.eol()) { return 'Invalid arguments'; }
+              if (opts[1]) {
+                ignoreCase = opts[1].indexOf('i') != -1;
+                unique = opts[1].indexOf('u') != -1;
+                var decimal = opts[1].indexOf('d') != -1 || opts[1].indexOf('n') != -1 && 1;
+                var hex = opts[1].indexOf('x') != -1 && 1;
+                var octal = opts[1].indexOf('o') != -1 && 1;
+                if (decimal + hex + octal > 1) { return 'Invalid arguments'; }
+                number = decimal && 'decimal' || hex && 'hex' || octal && 'octal';
+              }
+              if (opts[2]) {
+                pattern = new RegExp(opts[2].substr(1, opts[2].length - 2), ignoreCase ? 'i' : '');
+              }
+            }
+          }
+          var err = parseArgs();
+          if (err) {
+            showConfirm(cm, err + ': ' + params.argString);
+            return;
+          }
+          var lineStart = params.line || cm.firstLine();
+          var lineEnd = params.lineEnd || params.line || cm.lastLine();
+          if (lineStart == lineEnd) { return; }
+          var curStart = Pos(lineStart, 0);
+          var curEnd = Pos(lineEnd, lineLength(cm, lineEnd));
+          var text = cm.getRange(curStart, curEnd).split('\n');
+          var numberRegex = pattern ? pattern :
+             (number == 'decimal') ? /(-?)([\d]+)/ :
+             (number == 'hex') ? /(-?)(?:0x)?([0-9a-f]+)/i :
+             (number == 'octal') ? /([0-7]+)/ : null;
+          var radix = (number == 'decimal') ? 10 : (number == 'hex') ? 16 : (number == 'octal') ? 8 : null;
+          var numPart = [], textPart = [];
+          if (number || pattern) {
+            for (var i = 0; i < text.length; i++) {
+              var matchPart = pattern ? text[i].match(pattern) : null;
+              if (matchPart && matchPart[0] != '') {
+                numPart.push(matchPart);
+              } else if (!pattern && numberRegex.exec(text[i])) {
+                numPart.push(text[i]);
+              } else {
+                textPart.push(text[i]);
+              }
+            }
+          } else {
+            textPart = text;
+          }
+          function compareFn(a, b) {
+            if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
+            if (ignoreCase) { a = a.toLowerCase(); b = b.toLowerCase(); }
+            var anum = number && numberRegex.exec(a);
+            var bnum = number && numberRegex.exec(b);
+            if (!anum) { return a < b ? -1 : 1; }
+            anum = parseInt((anum[1] + anum[2]).toLowerCase(), radix);
+            bnum = parseInt((bnum[1] + bnum[2]).toLowerCase(), radix);
+            return anum - bnum;
+          }
+          function comparePatternFn(a, b) {
+            if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
+            if (ignoreCase) { a[0] = a[0].toLowerCase(); b[0] = b[0].toLowerCase(); }
+            return (a[0] < b[0]) ? -1 : 1;
+          }
+          numPart.sort(pattern ? comparePatternFn : compareFn);
+          if (pattern) {
+            for (var i = 0; i < numPart.length; i++) {
+              numPart[i] = numPart[i].input;
+            }
+          } else if (!number) { textPart.sort(compareFn); }
+          text = (!reverse) ? textPart.concat(numPart) : numPart.concat(textPart);
+          if (unique) { // Remove duplicate lines
+            var textOld = text;
+            var lastLine;
+            text = [];
+            for (var i = 0; i < textOld.length; i++) {
+              if (textOld[i] != lastLine) {
+                text.push(textOld[i]);
+              }
+              lastLine = textOld[i];
+            }
+          }
+          cm.replaceRange(text.join('\n'), curStart, curEnd);
+        },
+        global: function(cm, params) {
+          // a global command is of the form
+          // :[range]g/pattern/[cmd]
+          // argString holds the string /pattern/[cmd]
+          var argString = params.argString;
+          if (!argString) {
+            showConfirm(cm, 'Regular Expression missing from global');
+            return;
+          }
+          // range is specified here
+          var lineStart = (params.line !== undefined) ? params.line : cm.firstLine();
+          var lineEnd = params.lineEnd || params.line || cm.lastLine();
+          // get the tokens from argString
+          var tokens = splitBySlash(argString);
+          var regexPart = argString, cmd;
+          if (tokens.length) {
+            regexPart = tokens[0];
+            cmd = tokens.slice(1, tokens.length).join('/');
+          }
+          if (regexPart) {
+            // If regex part is empty, then use the previous query. Otherwise
+            // use the regex part as the new query.
+            try {
+             updateSearchQuery(cm, regexPart, true /** ignoreCase */,
+               true /** smartCase */);
+            } catch (e) {
+             showConfirm(cm, 'Invalid regex: ' + regexPart);
+             return;
+            }
+          }
+          // now that we have the regexPart, search for regex matches in the
+          // specified range of lines
+          var query = getSearchState(cm).getQuery();
+          var matchedLines = [], content = '';
+          for (var i = lineStart; i <= lineEnd; i++) {
+            var matched = query.test(cm.getLine(i));
+            if (matched) {
+              matchedLines.push(i+1);
+              content+= cm.getLine(i) + '<br>';
+            }
+          }
+          // if there is no [cmd], just display the list of matched lines
+          if (!cmd) {
+            showConfirm(cm, content);
+            return;
+          }
+          var index = 0;
+          var nextCommand = function() {
+            if (index < matchedLines.length) {
+              var command = matchedLines[index] + cmd;
+              exCommandDispatcher.processCommand(cm, command, {
+                callback: nextCommand
+              });
+            }
+            index++;
+          };
+          nextCommand();
+        },
+        substitute: function(cm, params) {
+          if (!cm.getSearchCursor) {
+            throw new Error('Search feature not available. Requires searchcursor.js or ' +
+                'any other getSearchCursor implementation.');
+          }
+          var argString = params.argString;
+          var tokens = argString ? splitBySeparator(argString, argString[0]) : [];
+          var regexPart, replacePart = '', trailing, flagsPart, count;
+          var confirm = false; // Whether to confirm each replace.
+          var global = false; // True to replace all instances on a line, false to replace only 1.
+          if (tokens.length) {
+            regexPart = tokens[0];
+            if (getOption('pcre') && regexPart !== '') {
+                regexPart = new RegExp(regexPart).source; //normalize not escaped characters
+            }
+            replacePart = tokens[1];
+            if (regexPart && regexPart[regexPart.length - 1] === '$') {
+              regexPart = regexPart.slice(0, regexPart.length - 1) + '\\n';
+              replacePart = replacePart ? replacePart + '\n' : '\n';
+            }
+            if (replacePart !== undefined) {
+              if (getOption('pcre')) {
+                replacePart = unescapeRegexReplace(replacePart.replace(/([^\\])&/g,"$1$$&"));
+              } else {
+                replacePart = translateRegexReplace(replacePart);
+              }
+              vimGlobalState.lastSubstituteReplacePart = replacePart;
+            }
+            trailing = tokens[2] ? tokens[2].split(' ') : [];
+          } else {
+            // either the argString is empty or its of the form ' hello/world'
+            // actually splitBySlash returns a list of tokens
+            // only if the string starts with a '/'
+            if (argString && argString.length) {
+              showConfirm(cm, 'Substitutions should be of the form ' +
+                  ':s/pattern/replace/');
+              return;
+            }
+          }
+          // After the 3rd slash, we can have flags followed by a space followed
+          // by count.
+          if (trailing) {
+            flagsPart = trailing[0];
+            count = parseInt(trailing[1]);
+            if (flagsPart) {
+              if (flagsPart.indexOf('c') != -1) {
+                confirm = true;
+                flagsPart.replace('c', '');
+              }
+              if (flagsPart.indexOf('g') != -1) {
+                global = true;
+                flagsPart.replace('g', '');
+              }
+              if (getOption('pcre')) {
+                 regexPart = regexPart + '/' + flagsPart;
+              } else {
+                 regexPart = regexPart.replace(/\//g, "\\/") + '/' + flagsPart;
+              }
+            }
+          }
+          if (regexPart) {
+            // If regex part is empty, then use the previous query. Otherwise use
+            // the regex part as the new query.
+            try {
+              updateSearchQuery(cm, regexPart, true /** ignoreCase */,
+                true /** smartCase */);
+            } catch (e) {
+              showConfirm(cm, 'Invalid regex: ' + regexPart);
+              return;
+            }
+          }
+          replacePart = replacePart || vimGlobalState.lastSubstituteReplacePart;
+          if (replacePart === undefined) {
+            showConfirm(cm, 'No previous substitute regular expression');
+            return;
+          }
+          var state = getSearchState(cm);
+          var query = state.getQuery();
+          var lineStart = (params.line !== undefined) ? params.line : cm.getCursor().line;
+          var lineEnd = params.lineEnd || lineStart;
+          if (lineStart == cm.firstLine() && lineEnd == cm.lastLine()) {
+            lineEnd = Infinity;
+          }
+          if (count) {
+            lineStart = lineEnd;
+            lineEnd = lineStart + count - 1;
+          }
+          var startPos = clipCursorToContent(cm, Pos(lineStart, 0));
+          var cursor = cm.getSearchCursor(query, startPos);
+          doReplace(cm, confirm, global, lineStart, lineEnd, cursor, query, replacePart, params.callback);
+        },
+        redo: CodeMirror.commands.redo,
+        undo: CodeMirror.commands.undo,
+        write: function(cm) {
+          if (CodeMirror.commands.save) {
+            // If a save command is defined, call it.
+            CodeMirror.commands.save(cm);
+          } else if (cm.save) {
+            // Saves to text area if no save command is defined and cm.save() is available.
+            cm.save();
+          }
+        },
+        nohlsearch: function(cm) {
+          clearSearchHighlight(cm);
+        },
+        yank: function (cm) {
+          var cur = copyCursor(cm.getCursor());
+          var line = cur.line;
+          var lineText = cm.getLine(line);
+          vimGlobalState.registerController.pushText(
+            '0', 'yank', lineText, true, true);
+        },
+        delmarks: function(cm, params) {
+          if (!params.argString || !trim(params.argString)) {
+            showConfirm(cm, 'Argument required');
+            return;
+          }
+  
+          var state = cm.state.vim;
+          var stream = new CodeMirror.StringStream(trim(params.argString));
+          while (!stream.eol()) {
+            stream.eatSpace();
+  
+            // Record the streams position at the beginning of the loop for use
+            // in error messages.
+            var count = stream.pos;
+  
+            if (!stream.match(/[a-zA-Z]/, false)) {
+              showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+              return;
+            }
+  
+            var sym = stream.next();
+            // Check if this symbol is part of a range
+            if (stream.match('-', true)) {
+              // This symbol is part of a range.
+  
+              // The range must terminate at an alphabetic character.
+              if (!stream.match(/[a-zA-Z]/, false)) {
+                showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+                return;
+              }
+  
+              var startMark = sym;
+              var finishMark = stream.next();
+              // The range must terminate at an alphabetic character which
+              // shares the same case as the start of the range.
+              if (isLowerCase(startMark) && isLowerCase(finishMark) ||
+                  isUpperCase(startMark) && isUpperCase(finishMark)) {
+                var start = startMark.charCodeAt(0);
+                var finish = finishMark.charCodeAt(0);
+                if (start >= finish) {
+                  showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+                  return;
+                }
+  
+                // Because marks are always ASCII values, and we have
+                // determined that they are the same case, we can use
+                // their char codes to iterate through the defined range.
+                for (var j = 0; j <= finish - start; j++) {
+                  var mark = String.fromCharCode(start + j);
+                  delete state.marks[mark];
+                }
+              } else {
+                showConfirm(cm, 'Invalid argument: ' + startMark + '-');
+                return;
+              }
+            } else {
+              // This symbol is a valid mark, and is not part of a range.
+              delete state.marks[sym];
+            }
+          }
+        }
+      };
+  
+      var exCommandDispatcher = new ExCommandDispatcher();
+  
+      /**
+      * @param {CodeMirror} cm CodeMirror instance we are in.
+      * @param {boolean} confirm Whether to confirm each replace.
+      * @param {Cursor} lineStart Line to start replacing from.
+      * @param {Cursor} lineEnd Line to stop replacing at.
+      * @param {RegExp} query Query for performing matches with.
+      * @param {string} replaceWith Text to replace matches with. May contain $1,
+      *     $2, etc for replacing captured groups using Javascript replace.
+      * @param {function()} callback A callback for when the replace is done.
+      */
+      function doReplace(cm, confirm, global, lineStart, lineEnd, searchCursor, query,
+          replaceWith, callback) {
+        // Set up all the functions.
+        cm.state.vim.exMode = true;
+        var done = false;
+        var lastPos = searchCursor.from();
+        function replaceAll() {
+          cm.operation(function() {
+            while (!done) {
+              replace();
+              next();
+            }
+            stop();
+          });
+        }
+        function replace() {
+          var text = cm.getRange(searchCursor.from(), searchCursor.to());
+          var newText = text.replace(query, replaceWith);
+          searchCursor.replace(newText);
+        }
+        function next() {
+          // The below only loops to skip over multiple occurrences on the same
+          // line when 'global' is not true.
+          while(searchCursor.findNext() &&
+                isInRange(searchCursor.from(), lineStart, lineEnd)) {
+            if (!global && lastPos && searchCursor.from().line == lastPos.line) {
+              continue;
+            }
+            cm.scrollIntoView(searchCursor.from(), 30);
+            cm.setSelection(searchCursor.from(), searchCursor.to());
+            lastPos = searchCursor.from();
+            done = false;
+            return;
+          }
+          done = true;
+        }
+        function stop(close) {
+          if (close) { close(); }
+          cm.focus();
+          if (lastPos) {
+            cm.setCursor(lastPos);
+            var vim = cm.state.vim;
+            vim.exMode = false;
+            vim.lastHPos = vim.lastHSPos = lastPos.ch;
+          }
+          if (callback) { callback(); }
+        }
+        function onPromptKeyDown(e, _value, close) {
+          // Swallow all keys.
+          CodeMirror.e_stop(e);
+          var keyName = CodeMirror.keyName(e);
+          switch (keyName) {
+            case 'Y':
+              replace(); next(); break;
+            case 'N':
+              next(); break;
+            case 'A':
+              // replaceAll contains a call to close of its own. We don't want it
+              // to fire too early or multiple times.
+              var savedCallback = callback;
+              callback = undefined;
+              cm.operation(replaceAll);
+              callback = savedCallback;
+              break;
+            case 'L':
+              replace();
+              // fall through and exit.
+            case 'Q':
+            case 'Esc':
+            case 'Ctrl-C':
+            case 'Ctrl-[':
+              stop(close);
+              break;
+          }
+          if (done) { stop(close); }
+          return true;
+        }
+  
+        // Actually do replace.
+        next();
+        if (done) {
+          showConfirm(cm, 'No matches for ' + query.source);
+          return;
+        }
+        if (!confirm) {
+          replaceAll();
+          if (callback) { callback(); }
+          return;
+        }
+        showPrompt(cm, {
+          prefix: 'replace with <strong>' + replaceWith + '</strong> (y/n/a/q/l)',
+          onKeyDown: onPromptKeyDown
+        });
+      }
+  
+      CodeMirror.keyMap.vim = {
+        attach: attachVimMap,
+        detach: detachVimMap,
+        call: cmKey
+      };
+  
+      function exitInsertMode(cm) {
+        var vim = cm.state.vim;
+        var macroModeState = vimGlobalState.macroModeState;
+        var insertModeChangeRegister = vimGlobalState.registerController.getRegister('.');
+        var isPlaying = macroModeState.isPlaying;
+        var lastChange = macroModeState.lastInsertModeChanges;
+        if (!isPlaying) {
+          cm.off('change', onChange);
+          CodeMirror.off(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
+        }
+        if (!isPlaying && vim.insertModeRepeat > 1) {
+          // Perform insert mode repeat for commands like 3,a and 3,o.
+          repeatLastEdit(cm, vim, vim.insertModeRepeat - 1,
+              true /** repeatForInsert */);
+          vim.lastEditInputState.repeatOverride = vim.insertModeRepeat;
+        }
+        delete vim.insertModeRepeat;
+        vim.insertMode = false;
+        cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1);
+        cm.setOption('keyMap', 'vim');
+        cm.setOption('disableInput', true);
+        cm.toggleOverwrite(false); // exit replace mode if we were in it.
+        // update the ". register before exiting insert mode
+        insertModeChangeRegister.setText(lastChange.changes.join(''));
+        CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+        if (macroModeState.isRecording) {
+          logInsertModeChange(macroModeState);
+        }
+      }
+  
+      function _mapCommand(command) {
+        defaultKeymap.unshift(command);
+      }
+  
+      function mapCommand(keys, type, name, args, extra) {
+        var command = {keys: keys, type: type};
+        command[type] = name;
+        command[type + "Args"] = args;
+        for (var key in extra)
+          command[key] = extra[key];
+        _mapCommand(command);
+      }
+  
+      // The timeout in milliseconds for the two-character ESC keymap should be
+      // adjusted according to your typing speed to prevent false positives.
+      defineOption('insertModeEscKeysTimeout', 200, 'number');
+  
+      CodeMirror.keyMap['vim-insert'] = {
+        // TODO: override navigation keys so that Esc will cancel automatic
+        // indentation from o, O, i_<CR>
+        fallthrough: ['default'],
+        attach: attachVimMap,
+        detach: detachVimMap,
+        call: cmKey
+      };
+  
+      CodeMirror.keyMap['vim-replace'] = {
+        'Backspace': 'goCharLeft',
+        fallthrough: ['vim-insert'],
+        attach: attachVimMap,
+        detach: detachVimMap,
+        call: cmKey
+      };
+  
+      function executeMacroRegister(cm, vim, macroModeState, registerName) {
+        var register = vimGlobalState.registerController.getRegister(registerName);
+        if (registerName == ':') {
+          // Read-only register containing last Ex command.
+          if (register.keyBuffer[0]) {
+            exCommandDispatcher.processCommand(cm, register.keyBuffer[0]);
+          }
+          macroModeState.isPlaying = false;
+          return;
+        }
+        var keyBuffer = register.keyBuffer;
+        var imc = 0;
+        macroModeState.isPlaying = true;
+        macroModeState.replaySearchQueries = register.searchQueries.slice(0);
+        for (var i = 0; i < keyBuffer.length; i++) {
+          var text = keyBuffer[i];
+          var match, key;
+          while (text) {
+            // Pull off one command key, which is either a single character
+            // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
+            match = (/<\w+-.+?>|<\w+>|./).exec(text);
+            key = match[0];
+            text = text.substring(match.index + key.length);
+            CodeMirror.Vim.handleKey(cm, key, 'macro');
+            if (vim.insertMode) {
+              var changes = register.insertModeChanges[imc++].changes;
+              vimGlobalState.macroModeState.lastInsertModeChanges.changes =
+                  changes;
+              repeatInsertModeChanges(cm, changes, 1);
+              exitInsertMode(cm);
+            }
+          }
+        }
+        macroModeState.isPlaying = false;
+      }
+  
+      function logKey(macroModeState, key) {
+        if (macroModeState.isPlaying) { return; }
+        var registerName = macroModeState.latestRegister;
+        var register = vimGlobalState.registerController.getRegister(registerName);
+        if (register) {
+          register.pushText(key);
+        }
+      }
+  
+      function logInsertModeChange(macroModeState) {
+        if (macroModeState.isPlaying) { return; }
+        var registerName = macroModeState.latestRegister;
+        var register = vimGlobalState.registerController.getRegister(registerName);
+        if (register && register.pushInsertModeChanges) {
+          register.pushInsertModeChanges(macroModeState.lastInsertModeChanges);
+        }
+      }
+  
+      function logSearchQuery(macroModeState, query) {
+        if (macroModeState.isPlaying) { return; }
+        var registerName = macroModeState.latestRegister;
+        var register = vimGlobalState.registerController.getRegister(registerName);
+        if (register && register.pushSearchQuery) {
+          register.pushSearchQuery(query);
+        }
+      }
+  
+      /**
+       * Listens for changes made in insert mode.
+       * Should only be active in insert mode.
+       */
+      function onChange(cm, changeObj) {
+        var macroModeState = vimGlobalState.macroModeState;
+        var lastChange = macroModeState.lastInsertModeChanges;
+        if (!macroModeState.isPlaying) {
+          while(changeObj) {
+            lastChange.expectCursorActivityForChange = true;
+            if (lastChange.ignoreCount > 1) {
+              lastChange.ignoreCount--;
+            } else if (changeObj.origin == '+input' || changeObj.origin == 'paste'
+                || changeObj.origin === undefined /* only in testing */) {
+              var selectionCount = cm.listSelections().length;
+              if (selectionCount > 1)
+                lastChange.ignoreCount = selectionCount;
+              var text = changeObj.text.join('\n');
+              if (lastChange.maybeReset) {
+                lastChange.changes = [];
+                lastChange.maybeReset = false;
+              }
+              if (text) {
+                if (cm.state.overwrite && !/\n/.test(text)) {
+                  lastChange.changes.push([text]);
+                } else {
+                  lastChange.changes.push(text);
+                }
+              }
+            }
+            // Change objects may be chained with next.
+            changeObj = changeObj.next;
+          }
+        }
+      }
+  
+      /**
+      * Listens for any kind of cursor activity on CodeMirror.
+      */
+      function onCursorActivity(cm) {
+        var vim = cm.state.vim;
+        if (vim.insertMode) {
+          // Tracking cursor activity in insert mode (for macro support).
+          var macroModeState = vimGlobalState.macroModeState;
+          if (macroModeState.isPlaying) { return; }
+          var lastChange = macroModeState.lastInsertModeChanges;
+          if (lastChange.expectCursorActivityForChange) {
+            lastChange.expectCursorActivityForChange = false;
+          } else {
+            // Cursor moved outside the context of an edit. Reset the change.
+            lastChange.maybeReset = true;
+          }
+        } else if (!cm.curOp.isVimOp) {
+          handleExternalSelection(cm, vim);
+        }
+        if (vim.visualMode) {
+          updateFakeCursor(cm);
+        }
+      }
+      /**
+       * Keeps track of a fake cursor to support visual mode cursor behavior.
+       */
+      function updateFakeCursor(cm) {
+        var className = 'cm-animate-fat-cursor';
+        var vim = cm.state.vim;
+        var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
+        var to = offsetCursor(from, 0, 1);
+        clearFakeCursor(vim);
+        // In visual mode, the cursor may be positioned over EOL.
+        if (from.ch == cm.getLine(from.line).length) {
+          var widget = document.createElement("span");
+          widget.textContent = "\u00a0";
+          widget.className = className;
+          vim.fakeCursorBookmark = cm.setBookmark(from, {widget: widget});
+        } else {
+          vim.fakeCursor = cm.markText(from, to, {className: className});
+        }
+      }
+      function clearFakeCursor(vim) {
+        if (vim.fakeCursor) {
+          vim.fakeCursor.clear();
+          vim.fakeCursor = null;
+        }
+        if (vim.fakeCursorBookmark) {
+          vim.fakeCursorBookmark.clear();
+          vim.fakeCursorBookmark = null;
+        }
+      }
+      function handleExternalSelection(cm, vim) {
+        var anchor = cm.getCursor('anchor');
+        var head = cm.getCursor('head');
+        // Enter or exit visual mode to match mouse selection.
+        if (vim.visualMode && !cm.somethingSelected()) {
+          exitVisualMode(cm, false);
+        } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
+          vim.visualMode = true;
+          vim.visualLine = false;
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
+        }
+        if (vim.visualMode) {
+          // Bind CodeMirror selection model to vim selection model.
+          // Mouse selections are considered visual characterwise.
+          var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
+          var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
+          head = offsetCursor(head, 0, headOffset);
+          anchor = offsetCursor(anchor, 0, anchorOffset);
+          vim.sel = {
+            anchor: anchor,
+            head: head
+          };
+          updateMark(cm, vim, '<', cursorMin(head, anchor));
+          updateMark(cm, vim, '>', cursorMax(head, anchor));
+        } else if (!vim.insertMode) {
+          // Reset lastHPos if selection was modified by something outside of vim mode e.g. by mouse.
+          vim.lastHPos = cm.getCursor().ch;
+        }
+      }
+  
+      /** Wrapper for special keys pressed in insert mode */
+      function InsertModeKey(keyName) {
+        this.keyName = keyName;
+      }
+  
+      /**
+      * Handles raw key down events from the text area.
+      * - Should only be active in insert mode.
+      * - For recording deletes in insert mode.
+      */
+      function onKeyEventTargetKeyDown(e) {
+        var macroModeState = vimGlobalState.macroModeState;
+        var lastChange = macroModeState.lastInsertModeChanges;
+        var keyName = CodeMirror.keyName(e);
+        if (!keyName) { return; }
+        function onKeyFound() {
+          if (lastChange.maybeReset) {
+            lastChange.changes = [];
+            lastChange.maybeReset = false;
+          }
+          lastChange.changes.push(new InsertModeKey(keyName));
+          return true;
+        }
+        if (keyName.indexOf('Delete') != -1 || keyName.indexOf('Backspace') != -1) {
+          CodeMirror.lookupKey(keyName, 'vim-insert', onKeyFound);
+        }
+      }
+  
+      /**
+       * Repeats the last edit, which includes exactly 1 command and at most 1
+       * insert. Operator and motion commands are read from lastEditInputState,
+       * while action commands are read from lastEditActionCommand.
+       *
+       * If repeatForInsert is true, then the function was called by
+       * exitInsertMode to repeat the insert mode changes the user just made. The
+       * corresponding enterInsertMode call was made with a count.
+       */
+      function repeatLastEdit(cm, vim, repeat, repeatForInsert) {
+        var macroModeState = vimGlobalState.macroModeState;
+        macroModeState.isPlaying = true;
+        var isAction = !!vim.lastEditActionCommand;
+        var cachedInputState = vim.inputState;
+        function repeatCommand() {
+          if (isAction) {
+            commandDispatcher.processAction(cm, vim, vim.lastEditActionCommand);
+          } else {
+            commandDispatcher.evalInput(cm, vim);
+          }
+        }
+        function repeatInsert(repeat) {
+          if (macroModeState.lastInsertModeChanges.changes.length > 0) {
+            // For some reason, repeat cw in desktop VIM does not repeat
+            // insert mode changes. Will conform to that behavior.
+            repeat = !vim.lastEditActionCommand ? 1 : repeat;
+            var changeObject = macroModeState.lastInsertModeChanges;
+            repeatInsertModeChanges(cm, changeObject.changes, repeat);
+          }
+        }
+        vim.inputState = vim.lastEditInputState;
+        if (isAction && vim.lastEditActionCommand.interlaceInsertRepeat) {
+          // o and O repeat have to be interlaced with insert repeats so that the
+          // insertions appear on separate lines instead of the last line.
+          for (var i = 0; i < repeat; i++) {
+            repeatCommand();
+            repeatInsert(1);
+          }
+        } else {
+          if (!repeatForInsert) {
+            // Hack to get the cursor to end up at the right place. If I is
+            // repeated in insert mode repeat, cursor will be 1 insert
+            // change set left of where it should be.
+            repeatCommand();
+          }
+          repeatInsert(repeat);
+        }
+        vim.inputState = cachedInputState;
+        if (vim.insertMode && !repeatForInsert) {
+          // Don't exit insert mode twice. If repeatForInsert is set, then we
+          // were called by an exitInsertMode call lower on the stack.
+          exitInsertMode(cm);
+        }
+        macroModeState.isPlaying = false;
+      }
+  
+      function repeatInsertModeChanges(cm, changes, repeat) {
+        function keyHandler(binding) {
+          if (typeof binding == 'string') {
+            CodeMirror.commands[binding](cm);
+          } else {
+            binding(cm);
+          }
+          return true;
+        }
+        var head = cm.getCursor('head');
+        var visualBlock = vimGlobalState.macroModeState.lastInsertModeChanges.visualBlock;
+        if (visualBlock) {
+          // Set up block selection again for repeating the changes.
+          selectForInsert(cm, head, visualBlock + 1);
+          repeat = cm.listSelections().length;
+          cm.setCursor(head);
+        }
+        for (var i = 0; i < repeat; i++) {
+          if (visualBlock) {
+            cm.setCursor(offsetCursor(head, i, 0));
+          }
+          for (var j = 0; j < changes.length; j++) {
+            var change = changes[j];
+            if (change instanceof InsertModeKey) {
+              CodeMirror.lookupKey(change.keyName, 'vim-insert', keyHandler);
+            } else if (typeof change == "string") {
+              var cur = cm.getCursor();
+              cm.replaceRange(change, cur, cur);
+            } else {
+              var start = cm.getCursor();
+              var end = offsetCursor(start, 0, change[0].length);
+              cm.replaceRange(change[0], start, end);
+            }
+          }
+        }
+        if (visualBlock) {
+          cm.setCursor(offsetCursor(head, 0, 1));
+        }
+      }
+  
+      resetVimGlobalState();
+      return vimApi;
+    };
+    // Initialize Vim and make it available as an API.
+    CodeMirror.Vim = Vim();
+  });
+  // CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+// A rough approximation of Sublime Text's keybindings
+// Depends on addon/search/searchcursor.js and optionally addon/dialog/dialogs.js
+
+(function(mod) {
+    if (typeof exports == "object" && typeof module == "object") // CommonJS
+      mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/edit/matchbrackets"));
+    else if (typeof define == "function" && define.amd) // AMD
+      define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/edit/matchbrackets"], mod);
+    else // Plain browser env
+      mod(CodeMirror);
+  })(function(CodeMirror) {
+    "use strict";
+  
+    var cmds = CodeMirror.commands;
+    var Pos = CodeMirror.Pos;
+  
+    // This is not exactly Sublime's algorithm. I couldn't make heads or tails of that.
+    function findPosSubword(doc, start, dir) {
+      if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));
+      var line = doc.getLine(start.line);
+      if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));
+      var state = "start", type, startPos = start.ch;
+      for (var pos = startPos, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
+        var next = line.charAt(dir < 0 ? pos - 1 : pos);
+        var cat = next != "_" && CodeMirror.isWordChar(next) ? "w" : "o";
+        if (cat == "w" && next.toUpperCase() == next) cat = "W";
+        if (state == "start") {
+          if (cat != "o") { state = "in"; type = cat; }
+          else startPos = pos + dir
+        } else if (state == "in") {
+          if (type != cat) {
+            if (type == "w" && cat == "W" && dir < 0) pos--;
+            if (type == "W" && cat == "w" && dir > 0) { // From uppercase to lowercase
+              if (pos == startPos + 1) { type = "w"; continue; }
+              else pos--;
+            }
+            break;
+          }
+        }
+      }
+      return Pos(start.line, pos);
+    }
+  
+    function moveSubword(cm, dir) {
+      cm.extendSelectionsBy(function(range) {
+        if (cm.display.shift || cm.doc.extend || range.empty())
+          return findPosSubword(cm.doc, range.head, dir);
+        else
+          return dir < 0 ? range.from() : range.to();
+      });
+    }
+  
+    cmds.goSubwordLeft = function(cm) { moveSubword(cm, -1); };
+    cmds.goSubwordRight = function(cm) { moveSubword(cm, 1); };
+  
+    cmds.scrollLineUp = function(cm) {
+      var info = cm.getScrollInfo();
+      if (!cm.somethingSelected()) {
+        var visibleBottomLine = cm.lineAtHeight(info.top + info.clientHeight, "local");
+        if (cm.getCursor().line >= visibleBottomLine)
+          cm.execCommand("goLineUp");
+      }
+      cm.scrollTo(null, info.top - cm.defaultTextHeight());
+    };
+    cmds.scrollLineDown = function(cm) {
+      var info = cm.getScrollInfo();
+      if (!cm.somethingSelected()) {
+        var visibleTopLine = cm.lineAtHeight(info.top, "local")+1;
+        if (cm.getCursor().line <= visibleTopLine)
+          cm.execCommand("goLineDown");
+      }
+      cm.scrollTo(null, info.top + cm.defaultTextHeight());
+    };
+  
+    cmds.splitSelectionByLine = function(cm) {
+      var ranges = cm.listSelections(), lineRanges = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var from = ranges[i].from(), to = ranges[i].to();
+        for (var line = from.line; line <= to.line; ++line)
+          if (!(to.line > from.line && line == to.line && to.ch == 0))
+            lineRanges.push({anchor: line == from.line ? from : Pos(line, 0),
+                             head: line == to.line ? to : Pos(line)});
+      }
+      cm.setSelections(lineRanges, 0);
+    };
+  
+    cmds.singleSelectionTop = function(cm) {
+      var range = cm.listSelections()[0];
+      cm.setSelection(range.anchor, range.head, {scroll: false});
+    };
+  
+    cmds.selectLine = function(cm) {
+      var ranges = cm.listSelections(), extended = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        extended.push({anchor: Pos(range.from().line, 0),
+                       head: Pos(range.to().line + 1, 0)});
+      }
+      cm.setSelections(extended);
+    };
+  
+    function insertLine(cm, above) {
+      if (cm.isReadOnly()) return CodeMirror.Pass
+      cm.operation(function() {
+        var len = cm.listSelections().length, newSelection = [], last = -1;
+        for (var i = 0; i < len; i++) {
+          var head = cm.listSelections()[i].head;
+          if (head.line <= last) continue;
+          var at = Pos(head.line + (above ? 0 : 1), 0);
+          cm.replaceRange("\n", at, null, "+insertLine");
+          cm.indentLine(at.line, null, true);
+          newSelection.push({head: at, anchor: at});
+          last = head.line + 1;
+        }
+        cm.setSelections(newSelection);
+      });
+      cm.execCommand("indentAuto");
+    }
+  
+    cmds.insertLineAfter = function(cm) { return insertLine(cm, false); };
+  
+    cmds.insertLineBefore = function(cm) { return insertLine(cm, true); };
+  
+    function wordAt(cm, pos) {
+      var start = pos.ch, end = start, line = cm.getLine(pos.line);
+      while (start && CodeMirror.isWordChar(line.charAt(start - 1))) --start;
+      while (end < line.length && CodeMirror.isWordChar(line.charAt(end))) ++end;
+      return {from: Pos(pos.line, start), to: Pos(pos.line, end), word: line.slice(start, end)};
+    }
+  
+    cmds.selectNextOccurrence = function(cm) {
+      var from = cm.getCursor("from"), to = cm.getCursor("to");
+      var fullWord = cm.state.sublimeFindFullWord == cm.doc.sel;
+      if (CodeMirror.cmpPos(from, to) == 0) {
+        var word = wordAt(cm, from);
+        if (!word.word) return;
+        cm.setSelection(word.from, word.to);
+        fullWord = true;
+      } else {
+        var text = cm.getRange(from, to);
+        var query = fullWord ? new RegExp("\\b" + text + "\\b") : text;
+        var cur = cm.getSearchCursor(query, to);
+        var found = cur.findNext();
+        if (!found) {
+          cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));
+          found = cur.findNext();
+        }
+        if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to())) return
+        cm.addSelection(cur.from(), cur.to());
+      }
+      if (fullWord)
+        cm.state.sublimeFindFullWord = cm.doc.sel;
+    };
+  
+    cmds.skipAndSelectNextOccurrence = function(cm) {
+      var prevAnchor = cm.getCursor("anchor"), prevHead = cm.getCursor("head");
+      cmds.selectNextOccurrence(cm);
+      if (CodeMirror.cmpPos(prevAnchor, prevHead) != 0) {
+        cm.doc.setSelections(cm.doc.listSelections()
+            .filter(function (sel) {
+              return sel.anchor != prevAnchor || sel.head != prevHead;
+            }));
+      }
+    }
+  
+    function addCursorToSelection(cm, dir) {
+      var ranges = cm.listSelections(), newRanges = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        var newAnchor = cm.findPosV(
+            range.anchor, dir, "line", range.anchor.goalColumn);
+        var newHead = cm.findPosV(
+            range.head, dir, "line", range.head.goalColumn);
+        newAnchor.goalColumn = range.anchor.goalColumn != null ?
+            range.anchor.goalColumn : cm.cursorCoords(range.anchor, "div").left;
+        newHead.goalColumn = range.head.goalColumn != null ?
+            range.head.goalColumn : cm.cursorCoords(range.head, "div").left;
+        var newRange = {anchor: newAnchor, head: newHead};
+        newRanges.push(range);
+        newRanges.push(newRange);
+      }
+      cm.setSelections(newRanges);
+    }
+    cmds.addCursorToPrevLine = function(cm) { addCursorToSelection(cm, -1); };
+    cmds.addCursorToNextLine = function(cm) { addCursorToSelection(cm, 1); };
+  
+    function isSelectedRange(ranges, from, to) {
+      for (var i = 0; i < ranges.length; i++)
+        if (CodeMirror.cmpPos(ranges[i].from(), from) == 0 &&
+            CodeMirror.cmpPos(ranges[i].to(), to) == 0) return true
+      return false
+    }
+  
+    var mirror = "(){}[]";
+    function selectBetweenBrackets(cm) {
+      var ranges = cm.listSelections(), newRanges = []
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i], pos = range.head, opening = cm.scanForBracket(pos, -1);
+        if (!opening) return false;
+        for (;;) {
+          var closing = cm.scanForBracket(pos, 1);
+          if (!closing) return false;
+          if (closing.ch == mirror.charAt(mirror.indexOf(opening.ch) + 1)) {
+            var startPos = Pos(opening.pos.line, opening.pos.ch + 1);
+            if (CodeMirror.cmpPos(startPos, range.from()) == 0 &&
+                CodeMirror.cmpPos(closing.pos, range.to()) == 0) {
+              opening = cm.scanForBracket(opening.pos, -1);
+              if (!opening) return false;
+            } else {
+              newRanges.push({anchor: startPos, head: closing.pos});
+              break;
+            }
+          }
+          pos = Pos(closing.pos.line, closing.pos.ch + 1);
+        }
+      }
+      cm.setSelections(newRanges);
+      return true;
+    }
+  
+    cmds.selectScope = function(cm) {
+      selectBetweenBrackets(cm) || cm.execCommand("selectAll");
+    };
+    cmds.selectBetweenBrackets = function(cm) {
+      if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;
+    };
+  
+    function puncType(type) {
+      return !type ? null : /\bpunctuation\b/.test(type) ? type : undefined
+    }
+  
+    cmds.goToBracket = function(cm) {
+      cm.extendSelectionsBy(function(range) {
+        var next = cm.scanForBracket(range.head, 1, puncType(cm.getTokenTypeAt(range.head)));
+        if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;
+        var prev = cm.scanForBracket(range.head, -1, puncType(cm.getTokenTypeAt(Pos(range.head.line, range.head.ch + 1))));
+        return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;
+      });
+    };
+  
+    cmds.swapLineUp = function(cm) {
+      if (cm.isReadOnly()) return CodeMirror.Pass
+      var ranges = cm.listSelections(), linesToMove = [], at = cm.firstLine() - 1, newSels = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i], from = range.from().line - 1, to = range.to().line;
+        newSels.push({anchor: Pos(range.anchor.line - 1, range.anchor.ch),
+                      head: Pos(range.head.line - 1, range.head.ch)});
+        if (range.to().ch == 0 && !range.empty()) --to;
+        if (from > at) linesToMove.push(from, to);
+        else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
+        at = to;
+      }
+      cm.operation(function() {
+        for (var i = 0; i < linesToMove.length; i += 2) {
+          var from = linesToMove[i], to = linesToMove[i + 1];
+          var line = cm.getLine(from);
+          cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
+          if (to > cm.lastLine())
+            cm.replaceRange("\n" + line, Pos(cm.lastLine()), null, "+swapLine");
+          else
+            cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
+        }
+        cm.setSelections(newSels);
+        cm.scrollIntoView();
+      });
+    };
+  
+    cmds.swapLineDown = function(cm) {
+      if (cm.isReadOnly()) return CodeMirror.Pass
+      var ranges = cm.listSelections(), linesToMove = [], at = cm.lastLine() + 1;
+      for (var i = ranges.length - 1; i >= 0; i--) {
+        var range = ranges[i], from = range.to().line + 1, to = range.from().line;
+        if (range.to().ch == 0 && !range.empty()) from--;
+        if (from < at) linesToMove.push(from, to);
+        else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
+        at = to;
+      }
+      cm.operation(function() {
+        for (var i = linesToMove.length - 2; i >= 0; i -= 2) {
+          var from = linesToMove[i], to = linesToMove[i + 1];
+          var line = cm.getLine(from);
+          if (from == cm.lastLine())
+            cm.replaceRange("", Pos(from - 1), Pos(from), "+swapLine");
+          else
+            cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
+          cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
+        }
+        cm.scrollIntoView();
+      });
+    };
+  
+    cmds.toggleCommentIndented = function(cm) {
+      cm.toggleComment({ indent: true });
+    }
+  
+    cmds.joinLines = function(cm) {
+      var ranges = cm.listSelections(), joined = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i], from = range.from();
+        var start = from.line, end = range.to().line;
+        while (i < ranges.length - 1 && ranges[i + 1].from().line == end)
+          end = ranges[++i].to().line;
+        joined.push({start: start, end: end, anchor: !range.empty() && from});
+      }
+      cm.operation(function() {
+        var offset = 0, ranges = [];
+        for (var i = 0; i < joined.length; i++) {
+          var obj = joined[i];
+          var anchor = obj.anchor && Pos(obj.anchor.line - offset, obj.anchor.ch), head;
+          for (var line = obj.start; line <= obj.end; line++) {
+            var actual = line - offset;
+            if (line == obj.end) head = Pos(actual, cm.getLine(actual).length + 1);
+            if (actual < cm.lastLine()) {
+              cm.replaceRange(" ", Pos(actual), Pos(actual + 1, /^\s*/.exec(cm.getLine(actual + 1))[0].length));
+              ++offset;
+            }
+          }
+          ranges.push({anchor: anchor || head, head: head});
+        }
+        cm.setSelections(ranges, 0);
+      });
+    };
+  
+    cmds.duplicateLine = function(cm) {
+      cm.operation(function() {
+        var rangeCount = cm.listSelections().length;
+        for (var i = 0; i < rangeCount; i++) {
+          var range = cm.listSelections()[i];
+          if (range.empty())
+            cm.replaceRange(cm.getLine(range.head.line) + "\n", Pos(range.head.line, 0));
+          else
+            cm.replaceRange(cm.getRange(range.from(), range.to()), range.from());
+        }
+        cm.scrollIntoView();
+      });
+    };
+  
+  
+    function sortLines(cm, caseSensitive) {
+      if (cm.isReadOnly()) return CodeMirror.Pass
+      var ranges = cm.listSelections(), toSort = [], selected;
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        if (range.empty()) continue;
+        var from = range.from().line, to = range.to().line;
+        while (i < ranges.length - 1 && ranges[i + 1].from().line == to)
+          to = ranges[++i].to().line;
+        if (!ranges[i].to().ch) to--;
+        toSort.push(from, to);
+      }
+      if (toSort.length) selected = true;
+      else toSort.push(cm.firstLine(), cm.lastLine());
+  
+      cm.operation(function() {
+        var ranges = [];
+        for (var i = 0; i < toSort.length; i += 2) {
+          var from = toSort[i], to = toSort[i + 1];
+          var start = Pos(from, 0), end = Pos(to);
+          var lines = cm.getRange(start, end, false);
+          if (caseSensitive)
+            lines.sort();
+          else
+            lines.sort(function(a, b) {
+              var au = a.toUpperCase(), bu = b.toUpperCase();
+              if (au != bu) { a = au; b = bu; }
+              return a < b ? -1 : a == b ? 0 : 1;
+            });
+          cm.replaceRange(lines, start, end);
+          if (selected) ranges.push({anchor: start, head: Pos(to + 1, 0)});
+        }
+        if (selected) cm.setSelections(ranges, 0);
+      });
+    }
+  
+    cmds.sortLines = function(cm) { sortLines(cm, true); };
+    cmds.sortLinesInsensitive = function(cm) { sortLines(cm, false); };
+  
+    cmds.nextBookmark = function(cm) {
+      var marks = cm.state.sublimeBookmarks;
+      if (marks) while (marks.length) {
+        var current = marks.shift();
+        var found = current.find();
+        if (found) {
+          marks.push(current);
+          return cm.setSelection(found.from, found.to);
+        }
+      }
+    };
+  
+    cmds.prevBookmark = function(cm) {
+      var marks = cm.state.sublimeBookmarks;
+      if (marks) while (marks.length) {
+        marks.unshift(marks.pop());
+        var found = marks[marks.length - 1].find();
+        if (!found)
+          marks.pop();
+        else
+          return cm.setSelection(found.from, found.to);
+      }
+    };
+  
+    cmds.toggleBookmark = function(cm) {
+      var ranges = cm.listSelections();
+      var marks = cm.state.sublimeBookmarks || (cm.state.sublimeBookmarks = []);
+      for (var i = 0; i < ranges.length; i++) {
+        var from = ranges[i].from(), to = ranges[i].to();
+        var found = ranges[i].empty() ? cm.findMarksAt(from) : cm.findMarks(from, to);
+        for (var j = 0; j < found.length; j++) {
+          if (found[j].sublimeBookmark) {
+            found[j].clear();
+            for (var k = 0; k < marks.length; k++)
+              if (marks[k] == found[j])
+                marks.splice(k--, 1);
+            break;
+          }
+        }
+        if (j == found.length)
+          marks.push(cm.markText(from, to, {sublimeBookmark: true, clearWhenEmpty: false}));
+      }
+    };
+  
+    cmds.clearBookmarks = function(cm) {
+      var marks = cm.state.sublimeBookmarks;
+      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
+      marks.length = 0;
+    };
+  
+    cmds.selectBookmarks = function(cm) {
+      var marks = cm.state.sublimeBookmarks, ranges = [];
+      if (marks) for (var i = 0; i < marks.length; i++) {
+        var found = marks[i].find();
+        if (!found)
+          marks.splice(i--, 0);
+        else
+          ranges.push({anchor: found.from, head: found.to});
+      }
+      if (ranges.length)
+        cm.setSelections(ranges, 0);
+    };
+  
+    function modifyWordOrSelection(cm, mod) {
+      cm.operation(function() {
+        var ranges = cm.listSelections(), indices = [], replacements = [];
+        for (var i = 0; i < ranges.length; i++) {
+          var range = ranges[i];
+          if (range.empty()) { indices.push(i); replacements.push(""); }
+          else replacements.push(mod(cm.getRange(range.from(), range.to())));
+        }
+        cm.replaceSelections(replacements, "around", "case");
+        for (var i = indices.length - 1, at; i >= 0; i--) {
+          var range = ranges[indices[i]];
+          if (at && CodeMirror.cmpPos(range.head, at) > 0) continue;
+          var word = wordAt(cm, range.head);
+          at = word.from;
+          cm.replaceRange(mod(word.word), word.from, word.to);
+        }
+      });
+    }
+  
+    cmds.smartBackspace = function(cm) {
+      if (cm.somethingSelected()) return CodeMirror.Pass;
+  
+      cm.operation(function() {
+        var cursors = cm.listSelections();
+        var indentUnit = cm.getOption("indentUnit");
+  
+        for (var i = cursors.length - 1; i >= 0; i--) {
+          var cursor = cursors[i].head;
+          var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);
+          var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption("tabSize"));
+  
+          // Delete by one character by default
+          var deletePos = cm.findPosH(cursor, -1, "char", false);
+  
+          if (toStartOfLine && !/\S/.test(toStartOfLine) && column % indentUnit == 0) {
+            var prevIndent = new Pos(cursor.line,
+              CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));
+  
+            // Smart delete only if we found a valid prevIndent location
+            if (prevIndent.ch != cursor.ch) deletePos = prevIndent;
+          }
+  
+          cm.replaceRange("", deletePos, cursor, "+delete");
+        }
+      });
+    };
+  
+    cmds.delLineRight = function(cm) {
+      cm.operation(function() {
+        var ranges = cm.listSelections();
+        for (var i = ranges.length - 1; i >= 0; i--)
+          cm.replaceRange("", ranges[i].anchor, Pos(ranges[i].to().line), "+delete");
+        cm.scrollIntoView();
+      });
+    };
+  
+    cmds.upcaseAtCursor = function(cm) {
+      modifyWordOrSelection(cm, function(str) { return str.toUpperCase(); });
+    };
+    cmds.downcaseAtCursor = function(cm) {
+      modifyWordOrSelection(cm, function(str) { return str.toLowerCase(); });
+    };
+  
+    cmds.setSublimeMark = function(cm) {
+      if (cm.state.sublimeMark) cm.state.sublimeMark.clear();
+      cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
+    };
+    cmds.selectToSublimeMark = function(cm) {
+      var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+      if (found) cm.setSelection(cm.getCursor(), found);
+    };
+    cmds.deleteToSublimeMark = function(cm) {
+      var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+      if (found) {
+        var from = cm.getCursor(), to = found;
+        if (CodeMirror.cmpPos(from, to) > 0) { var tmp = to; to = from; from = tmp; }
+        cm.state.sublimeKilled = cm.getRange(from, to);
+        cm.replaceRange("", from, to);
+      }
+    };
+    cmds.swapWithSublimeMark = function(cm) {
+      var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+      if (found) {
+        cm.state.sublimeMark.clear();
+        cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
+        cm.setCursor(found);
+      }
+    };
+    cmds.sublimeYank = function(cm) {
+      if (cm.state.sublimeKilled != null)
+        cm.replaceSelection(cm.state.sublimeKilled, null, "paste");
+    };
+  
+    cmds.showInCenter = function(cm) {
+      var pos = cm.cursorCoords(null, "local");
+      cm.scrollTo(null, (pos.top + pos.bottom) / 2 - cm.getScrollInfo().clientHeight / 2);
+    };
+  
+    function getTarget(cm) {
+      var from = cm.getCursor("from"), to = cm.getCursor("to");
+      if (CodeMirror.cmpPos(from, to) == 0) {
+        var word = wordAt(cm, from);
+        if (!word.word) return;
+        from = word.from;
+        to = word.to;
+      }
+      return {from: from, to: to, query: cm.getRange(from, to), word: word};
+    }
+  
+    function findAndGoTo(cm, forward) {
+      var target = getTarget(cm);
+      if (!target) return;
+      var query = target.query;
+      var cur = cm.getSearchCursor(query, forward ? target.to : target.from);
+  
+      if (forward ? cur.findNext() : cur.findPrevious()) {
+        cm.setSelection(cur.from(), cur.to());
+      } else {
+        cur = cm.getSearchCursor(query, forward ? Pos(cm.firstLine(), 0)
+                                                : cm.clipPos(Pos(cm.lastLine())));
+        if (forward ? cur.findNext() : cur.findPrevious())
+          cm.setSelection(cur.from(), cur.to());
+        else if (target.word)
+          cm.setSelection(target.from, target.to);
+      }
+    };
+    cmds.findUnder = function(cm) { findAndGoTo(cm, true); };
+    cmds.findUnderPrevious = function(cm) { findAndGoTo(cm,false); };
+    cmds.findAllUnder = function(cm) {
+      var target = getTarget(cm);
+      if (!target) return;
+      var cur = cm.getSearchCursor(target.query);
+      var matches = [];
+      var primaryIndex = -1;
+      while (cur.findNext()) {
+        matches.push({anchor: cur.from(), head: cur.to()});
+        if (cur.from().line <= target.from.line && cur.from().ch <= target.from.ch)
+          primaryIndex++;
+      }
+      cm.setSelections(matches, primaryIndex);
+    };
+  
+  
+    var keyMap = CodeMirror.keyMap;
+    keyMap.macSublime = {
+      "Cmd-Left": "goLineStartSmart",
+      "Shift-Tab": "indentLess",
+      "Shift-Ctrl-K": "deleteLine",
+      "Alt-Q": "wrapLines",
+      "Ctrl-Left": "goSubwordLeft",
+      "Ctrl-Right": "goSubwordRight",
+      "Ctrl-Alt-Up": "scrollLineUp",
+      "Ctrl-Alt-Down": "scrollLineDown",
+      "Cmd-L": "selectLine",
+      "Shift-Cmd-L": "splitSelectionByLine",
+      "Esc": "singleSelectionTop",
+      "Cmd-Enter": "insertLineAfter",
+      "Shift-Cmd-Enter": "insertLineBefore",
+      "Cmd-D": "selectNextOccurrence",
+      "Shift-Cmd-Space": "selectScope",
+      "Shift-Cmd-M": "selectBetweenBrackets",
+      "Cmd-M": "goToBracket",
+      "Cmd-Ctrl-Up": "swapLineUp",
+      "Cmd-Ctrl-Down": "swapLineDown",
+      "Cmd-/": "toggleCommentIndented",
+      "Cmd-J": "joinLines",
+      "Shift-Cmd-D": "duplicateLine",
+      "F5": "sortLines",
+      "Cmd-F5": "sortLinesInsensitive",
+      "F2": "nextBookmark",
+      "Shift-F2": "prevBookmark",
+      "Cmd-F2": "toggleBookmark",
+      "Shift-Cmd-F2": "clearBookmarks",
+      "Alt-F2": "selectBookmarks",
+      "Backspace": "smartBackspace",
+      "Cmd-K Cmd-D": "skipAndSelectNextOccurrence",
+      "Cmd-K Cmd-K": "delLineRight",
+      "Cmd-K Cmd-U": "upcaseAtCursor",
+      "Cmd-K Cmd-L": "downcaseAtCursor",
+      "Cmd-K Cmd-Space": "setSublimeMark",
+      "Cmd-K Cmd-A": "selectToSublimeMark",
+      "Cmd-K Cmd-W": "deleteToSublimeMark",
+      "Cmd-K Cmd-X": "swapWithSublimeMark",
+      "Cmd-K Cmd-Y": "sublimeYank",
+      "Cmd-K Cmd-C": "showInCenter",
+      "Cmd-K Cmd-G": "clearBookmarks",
+      "Cmd-K Cmd-Backspace": "delLineLeft",
+      "Cmd-K Cmd-1": "foldAll",
+      "Cmd-K Cmd-0": "unfoldAll",
+      "Cmd-K Cmd-J": "unfoldAll",
+      "Ctrl-Shift-Up": "addCursorToPrevLine",
+      "Ctrl-Shift-Down": "addCursorToNextLine",
+      "Cmd-F3": "findUnder",
+      "Shift-Cmd-F3": "findUnderPrevious",
+      "Alt-F3": "findAllUnder",
+      "Shift-Cmd-[": "fold",
+      "Shift-Cmd-]": "unfold",
+      "Cmd-I": "findIncremental",
+      "Shift-Cmd-I": "findIncrementalReverse",
+      "Cmd-H": "replace",
+      "F3": "findNext",
+      "Shift-F3": "findPrev",
+      "fallthrough": "macDefault"
+    };
+    CodeMirror.normalizeKeyMap(keyMap.macSublime);
+  
+    keyMap.pcSublime = {
+      "Shift-Tab": "indentLess",
+      "Shift-Ctrl-K": "deleteLine",
+      "Alt-Q": "wrapLines",
+      "Ctrl-T": "transposeChars",
+      "Alt-Left": "goSubwordLeft",
+      "Alt-Right": "goSubwordRight",
+      "Ctrl-Up": "scrollLineUp",
+      "Ctrl-Down": "scrollLineDown",
+      "Ctrl-L": "selectLine",
+      "Shift-Ctrl-L": "splitSelectionByLine",
+      "Esc": "singleSelectionTop",
+      "Ctrl-Enter": "insertLineAfter",
+      "Shift-Ctrl-Enter": "insertLineBefore",
+      "Ctrl-D": "selectNextOccurrence",
+      "Shift-Ctrl-Space": "selectScope",
+      "Shift-Ctrl-M": "selectBetweenBrackets",
+      "Ctrl-M": "goToBracket",
+      "Shift-Ctrl-Up": "swapLineUp",
+      "Shift-Ctrl-Down": "swapLineDown",
+      "Ctrl-/": "toggleCommentIndented",
+      "Ctrl-J": "joinLines",
+      "Shift-Ctrl-D": "duplicateLine",
+      "F9": "sortLines",
+      "Ctrl-F9": "sortLinesInsensitive",
+      "F2": "nextBookmark",
+      "Shift-F2": "prevBookmark",
+      "Ctrl-F2": "toggleBookmark",
+      "Shift-Ctrl-F2": "clearBookmarks",
+      "Alt-F2": "selectBookmarks",
+      "Backspace": "smartBackspace",
+      "Ctrl-K Ctrl-D": "skipAndSelectNextOccurrence",
+      "Ctrl-K Ctrl-K": "delLineRight",
+      "Ctrl-K Ctrl-U": "upcaseAtCursor",
+      "Ctrl-K Ctrl-L": "downcaseAtCursor",
+      "Ctrl-K Ctrl-Space": "setSublimeMark",
+      "Ctrl-K Ctrl-A": "selectToSublimeMark",
+      "Ctrl-K Ctrl-W": "deleteToSublimeMark",
+      "Ctrl-K Ctrl-X": "swapWithSublimeMark",
+      "Ctrl-K Ctrl-Y": "sublimeYank",
+      "Ctrl-K Ctrl-C": "showInCenter",
+      "Ctrl-K Ctrl-G": "clearBookmarks",
+      "Ctrl-K Ctrl-Backspace": "delLineLeft",
+      "Ctrl-K Ctrl-1": "foldAll",
+      "Ctrl-K Ctrl-0": "unfoldAll",
+      "Ctrl-K Ctrl-J": "unfoldAll",
+      "Ctrl-Alt-Up": "addCursorToPrevLine",
+      "Ctrl-Alt-Down": "addCursorToNextLine",
+      "Ctrl-F3": "findUnder",
+      "Shift-Ctrl-F3": "findUnderPrevious",
+      "Alt-F3": "findAllUnder",
+      "Shift-Ctrl-[": "fold",
+      "Shift-Ctrl-]": "unfold",
+      "Ctrl-I": "findIncremental",
+      "Shift-Ctrl-I": "findIncrementalReverse",
+      "Ctrl-H": "replace",
+      "F3": "findNext",
+      "Shift-F3": "findPrev",
+      "fallthrough": "pcDefault"
+    };
+    CodeMirror.normalizeKeyMap(keyMap.pcSublime);
+  
+    var mac = keyMap.default == keyMap.macDefault;
+    keyMap.sublime = mac ? keyMap.macSublime : keyMap.pcSublime;
+  });
+  "use strict";function q(a){throw a;}var t=void 0,u=!1;var sjcl={cipher:{},hash:{},keyexchange:{},mode:{},misc:{},codec:{},exception:{corrupt:function(a){this.toString=function(){return"CORRUPT: "+this.message};this.message=a},invalid:function(a){this.toString=function(){return"INVALID: "+this.message};this.message=a},bug:function(a){this.toString=function(){return"BUG: "+this.message};this.message=a},notReady:function(a){this.toString=function(){return"NOT READY: "+this.message};this.message=a}}};
+"undefined"!=typeof module&&module.exports&&(module.exports=sjcl);
+sjcl.cipher.aes=function(a){this.j[0][0][0]||this.D();var b,c,d,e,f=this.j[0][4],g=this.j[1];b=a.length;var h=1;4!==b&&(6!==b&&8!==b)&&q(new sjcl.exception.invalid("invalid aes key size"));this.a=[d=a.slice(0),e=[]];for(a=b;a<4*b+28;a++){c=d[a-1];if(0===a%b||8===b&&4===a%b)c=f[c>>>24]<<24^f[c>>16&255]<<16^f[c>>8&255]<<8^f[c&255],0===a%b&&(c=c<<8^c>>>24^h<<24,h=h<<1^283*(h>>7));d[a]=d[a-b]^c}for(b=0;a;b++,a--)c=d[b&3?a:a-4],e[b]=4>=a||4>b?c:g[0][f[c>>>24]]^g[1][f[c>>16&255]]^g[2][f[c>>8&255]]^g[3][f[c&
+255]]};
+sjcl.cipher.aes.prototype={encrypt:function(a){return y(this,a,0)},decrypt:function(a){return y(this,a,1)},j:[[[],[],[],[],[]],[[],[],[],[],[]]],D:function(){var a=this.j[0],b=this.j[1],c=a[4],d=b[4],e,f,g,h=[],l=[],k,n,m,p;for(e=0;0x100>e;e++)l[(h[e]=e<<1^283*(e>>7))^e]=e;for(f=g=0;!c[f];f^=k||1,g=l[g]||1){m=g^g<<1^g<<2^g<<3^g<<4;m=m>>8^m&255^99;c[f]=m;d[m]=f;n=h[e=h[k=h[f]]];p=0x1010101*n^0x10001*e^0x101*k^0x1010100*f;n=0x101*h[m]^0x1010100*m;for(e=0;4>e;e++)a[e][f]=n=n<<24^n>>>8,b[e][m]=p=p<<24^p>>>8}for(e=
+0;5>e;e++)a[e]=a[e].slice(0),b[e]=b[e].slice(0)}};
+function y(a,b,c){4!==b.length&&q(new sjcl.exception.invalid("invalid aes block size"));var d=a.a[c],e=b[0]^d[0],f=b[c?3:1]^d[1],g=b[2]^d[2];b=b[c?1:3]^d[3];var h,l,k,n=d.length/4-2,m,p=4,s=[0,0,0,0];h=a.j[c];a=h[0];var r=h[1],v=h[2],w=h[3],x=h[4];for(m=0;m<n;m++)h=a[e>>>24]^r[f>>16&255]^v[g>>8&255]^w[b&255]^d[p],l=a[f>>>24]^r[g>>16&255]^v[b>>8&255]^w[e&255]^d[p+1],k=a[g>>>24]^r[b>>16&255]^v[e>>8&255]^w[f&255]^d[p+2],b=a[b>>>24]^r[e>>16&255]^v[f>>8&255]^w[g&255]^d[p+3],p+=4,e=h,f=l,g=k;for(m=0;4>
+m;m++)s[c?3&-m:m]=x[e>>>24]<<24^x[f>>16&255]<<16^x[g>>8&255]<<8^x[b&255]^d[p++],h=e,e=f,f=g,g=b,b=h;return s}
+sjcl.bitArray={bitSlice:function(a,b,c){a=sjcl.bitArray.O(a.slice(b/32),32-(b&31)).slice(1);return c===t?a:sjcl.bitArray.clamp(a,c-b)},extract:function(a,b,c){var d=Math.floor(-b-c&31);return((b+c-1^b)&-32?a[b/32|0]<<32-d^a[b/32+1|0]>>>d:a[b/32|0]>>>d)&(1<<c)-1},concat:function(a,b){if(0===a.length||0===b.length)return a.concat(b);var c=a[a.length-1],d=sjcl.bitArray.getPartial(c);return 32===d?a.concat(b):sjcl.bitArray.O(b,d,c|0,a.slice(0,a.length-1))},bitLength:function(a){var b=a.length;return 0===
+b?0:32*(b-1)+sjcl.bitArray.getPartial(a[b-1])},clamp:function(a,b){if(32*a.length<b)return a;a=a.slice(0,Math.ceil(b/32));var c=a.length;b&=31;0<c&&b&&(a[c-1]=sjcl.bitArray.partial(b,a[c-1]&2147483648>>b-1,1));return a},partial:function(a,b,c){return 32===a?b:(c?b|0:b<<32-a)+0x10000000000*a},getPartial:function(a){return Math.round(a/0x10000000000)||32},equal:function(a,b){if(sjcl.bitArray.bitLength(a)!==sjcl.bitArray.bitLength(b))return u;var c=0,d;for(d=0;d<a.length;d++)c|=a[d]^b[d];return 0===
+c},O:function(a,b,c,d){var e;e=0;for(d===t&&(d=[]);32<=b;b-=32)d.push(c),c=0;if(0===b)return d.concat(a);for(e=0;e<a.length;e++)d.push(c|a[e]>>>b),c=a[e]<<32-b;e=a.length?a[a.length-1]:0;a=sjcl.bitArray.getPartial(e);d.push(sjcl.bitArray.partial(b+a&31,32<b+a?c:d.pop(),1));return d},k:function(a,b){return[a[0]^b[0],a[1]^b[1],a[2]^b[2],a[3]^b[3]]}};
+sjcl.codec.utf8String={fromBits:function(a){var b="",c=sjcl.bitArray.bitLength(a),d,e;for(d=0;d<c/8;d++)0===(d&3)&&(e=a[d/4]),b+=String.fromCharCode(e>>>24),e<<=8;return decodeURIComponent(escape(b))},toBits:function(a){a=unescape(encodeURIComponent(a));var b=[],c,d=0;for(c=0;c<a.length;c++)d=d<<8|a.charCodeAt(c),3===(c&3)&&(b.push(d),d=0);c&3&&b.push(sjcl.bitArray.partial(8*(c&3),d));return b}};
+sjcl.codec.hex={fromBits:function(a){var b="",c;for(c=0;c<a.length;c++)b+=((a[c]|0)+0xf00000000000).toString(16).substr(4);return b.substr(0,sjcl.bitArray.bitLength(a)/4)},toBits:function(a){var b,c=[],d;a=a.replace(/\s|0x/g,"");d=a.length;a+="00000000";for(b=0;b<a.length;b+=8)c.push(parseInt(a.substr(b,8),16)^0);return sjcl.bitArray.clamp(c,4*d)}};
+sjcl.codec.base64={I:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",fromBits:function(a,b,c){var d="",e=0,f=sjcl.codec.base64.I,g=0,h=sjcl.bitArray.bitLength(a);c&&(f=f.substr(0,62)+"-_");for(c=0;6*d.length<h;)d+=f.charAt((g^a[c]>>>e)>>>26),6>e?(g=a[c]<<6-e,e+=26,c++):(g<<=6,e-=6);for(;d.length&3&&!b;)d+="=";return d},toBits:function(a,b){a=a.replace(/\s|=/g,"");var c=[],d,e=0,f=sjcl.codec.base64.I,g=0,h;b&&(f=f.substr(0,62)+"-_");for(d=0;d<a.length;d++)h=f.indexOf(a.charAt(d)),
+0>h&&q(new sjcl.exception.invalid("this isn't base64!")),26<e?(e-=26,c.push(g^h>>>e),g=h<<32-e):(e+=6,g^=h<<32-e);e&56&&c.push(sjcl.bitArray.partial(e&56,g,1));return c}};sjcl.codec.base64url={fromBits:function(a){return sjcl.codec.base64.fromBits(a,1,1)},toBits:function(a){return sjcl.codec.base64.toBits(a,1)}};sjcl.hash.sha256=function(a){this.a[0]||this.D();a?(this.q=a.q.slice(0),this.m=a.m.slice(0),this.g=a.g):this.reset()};sjcl.hash.sha256.hash=function(a){return(new sjcl.hash.sha256).update(a).finalize()};
+sjcl.hash.sha256.prototype={blockSize:512,reset:function(){this.q=this.M.slice(0);this.m=[];this.g=0;return this},update:function(a){"string"===typeof a&&(a=sjcl.codec.utf8String.toBits(a));var b,c=this.m=sjcl.bitArray.concat(this.m,a);b=this.g;a=this.g=b+sjcl.bitArray.bitLength(a);for(b=512+b&-512;b<=a;b+=512)z(this,c.splice(0,16));return this},finalize:function(){var a,b=this.m,c=this.q,b=sjcl.bitArray.concat(b,[sjcl.bitArray.partial(1,1)]);for(a=b.length+2;a&15;a++)b.push(0);b.push(Math.floor(this.g/
+4294967296));for(b.push(this.g|0);b.length;)z(this,b.splice(0,16));this.reset();return c},M:[],a:[],D:function(){function a(a){return 0x100000000*(a-Math.floor(a))|0}var b=0,c=2,d;a:for(;64>b;c++){for(d=2;d*d<=c;d++)if(0===c%d)continue a;8>b&&(this.M[b]=a(Math.pow(c,0.5)));this.a[b]=a(Math.pow(c,1/3));b++}}};
+function z(a,b){var c,d,e,f=b.slice(0),g=a.q,h=a.a,l=g[0],k=g[1],n=g[2],m=g[3],p=g[4],s=g[5],r=g[6],v=g[7];for(c=0;64>c;c++)16>c?d=f[c]:(d=f[c+1&15],e=f[c+14&15],d=f[c&15]=(d>>>7^d>>>18^d>>>3^d<<25^d<<14)+(e>>>17^e>>>19^e>>>10^e<<15^e<<13)+f[c&15]+f[c+9&15]|0),d=d+v+(p>>>6^p>>>11^p>>>25^p<<26^p<<21^p<<7)+(r^p&(s^r))+h[c],v=r,r=s,s=p,p=m+d|0,m=n,n=k,k=l,l=d+(k&n^m&(k^n))+(k>>>2^k>>>13^k>>>22^k<<30^k<<19^k<<10)|0;g[0]=g[0]+l|0;g[1]=g[1]+k|0;g[2]=g[2]+n|0;g[3]=g[3]+m|0;g[4]=g[4]+p|0;g[5]=g[5]+s|0;g[6]=
+g[6]+r|0;g[7]=g[7]+v|0}
+sjcl.mode.ccm={name:"ccm",encrypt:function(a,b,c,d,e){var f,g=b.slice(0),h=sjcl.bitArray,l=h.bitLength(c)/8,k=h.bitLength(g)/8;e=e||64;d=d||[];7>l&&q(new sjcl.exception.invalid("ccm: iv must be at least 7 bytes"));for(f=2;4>f&&k>>>8*f;f++);f<15-l&&(f=15-l);c=h.clamp(c,8*(15-f));b=sjcl.mode.ccm.K(a,b,c,d,e,f);g=sjcl.mode.ccm.n(a,g,c,b,e,f);return h.concat(g.data,g.tag)},decrypt:function(a,b,c,d,e){e=e||64;d=d||[];var f=sjcl.bitArray,g=f.bitLength(c)/8,h=f.bitLength(b),l=f.clamp(b,h-e),k=f.bitSlice(b,
+h-e),h=(h-e)/8;7>g&&q(new sjcl.exception.invalid("ccm: iv must be at least 7 bytes"));for(b=2;4>b&&h>>>8*b;b++);b<15-g&&(b=15-g);c=f.clamp(c,8*(15-b));l=sjcl.mode.ccm.n(a,l,c,k,e,b);a=sjcl.mode.ccm.K(a,l.data,c,d,e,b);f.equal(l.tag,a)||q(new sjcl.exception.corrupt("ccm: tag doesn't match"));return l.data},K:function(a,b,c,d,e,f){var g=[],h=sjcl.bitArray,l=h.k;e/=8;(e%2||4>e||16<e)&&q(new sjcl.exception.invalid("ccm: invalid tag length"));(0xffffffff<d.length||0xffffffff<b.length)&&q(new sjcl.exception.bug("ccm: can't deal with 4GiB or more data"));
+f=[h.partial(8,(d.length?64:0)|e-2<<2|f-1)];f=h.concat(f,c);f[3]|=h.bitLength(b)/8;f=a.encrypt(f);if(d.length){c=h.bitLength(d)/8;65279>=c?g=[h.partial(16,c)]:0xffffffff>=c&&(g=h.concat([h.partial(16,65534)],[c]));g=h.concat(g,d);for(d=0;d<g.length;d+=4)f=a.encrypt(l(f,g.slice(d,d+4).concat([0,0,0])))}for(d=0;d<b.length;d+=4)f=a.encrypt(l(f,b.slice(d,d+4).concat([0,0,0])));return h.clamp(f,8*e)},n:function(a,b,c,d,e,f){var g,h=sjcl.bitArray;g=h.k;var l=b.length,k=h.bitLength(b);c=h.concat([h.partial(8,
+f-1)],c).concat([0,0,0]).slice(0,4);d=h.bitSlice(g(d,a.encrypt(c)),0,e);if(!l)return{tag:d,data:[]};for(g=0;g<l;g+=4)c[3]++,e=a.encrypt(c),b[g]^=e[0],b[g+1]^=e[1],b[g+2]^=e[2],b[g+3]^=e[3];return{tag:d,data:h.clamp(b,k)}}};
+sjcl.mode.ocb2={name:"ocb2",encrypt:function(a,b,c,d,e,f){128!==sjcl.bitArray.bitLength(c)&&q(new sjcl.exception.invalid("ocb iv must be 128 bits"));var g,h=sjcl.mode.ocb2.G,l=sjcl.bitArray,k=l.k,n=[0,0,0,0];c=h(a.encrypt(c));var m,p=[];d=d||[];e=e||64;for(g=0;g+4<b.length;g+=4)m=b.slice(g,g+4),n=k(n,m),p=p.concat(k(c,a.encrypt(k(c,m)))),c=h(c);m=b.slice(g);b=l.bitLength(m);g=a.encrypt(k(c,[0,0,0,b]));m=l.clamp(k(m.concat([0,0,0]),g),b);n=k(n,k(m.concat([0,0,0]),g));n=a.encrypt(k(n,k(c,h(c))));d.length&&
+(n=k(n,f?d:sjcl.mode.ocb2.pmac(a,d)));return p.concat(l.concat(m,l.clamp(n,e)))},decrypt:function(a,b,c,d,e,f){128!==sjcl.bitArray.bitLength(c)&&q(new sjcl.exception.invalid("ocb iv must be 128 bits"));e=e||64;var g=sjcl.mode.ocb2.G,h=sjcl.bitArray,l=h.k,k=[0,0,0,0],n=g(a.encrypt(c)),m,p,s=sjcl.bitArray.bitLength(b)-e,r=[];d=d||[];for(c=0;c+4<s/32;c+=4)m=l(n,a.decrypt(l(n,b.slice(c,c+4)))),k=l(k,m),r=r.concat(m),n=g(n);p=s-32*c;m=a.encrypt(l(n,[0,0,0,p]));m=l(m,h.clamp(b.slice(c),p).concat([0,0,0]));
+k=l(k,m);k=a.encrypt(l(k,l(n,g(n))));d.length&&(k=l(k,f?d:sjcl.mode.ocb2.pmac(a,d)));h.equal(h.clamp(k,e),h.bitSlice(b,s))||q(new sjcl.exception.corrupt("ocb: tag doesn't match"));return r.concat(h.clamp(m,p))},pmac:function(a,b){var c,d=sjcl.mode.ocb2.G,e=sjcl.bitArray,f=e.k,g=[0,0,0,0],h=a.encrypt([0,0,0,0]),h=f(h,d(d(h)));for(c=0;c+4<b.length;c+=4)h=d(h),g=f(g,a.encrypt(f(h,b.slice(c,c+4))));c=b.slice(c);128>e.bitLength(c)&&(h=f(h,d(h)),c=e.concat(c,[-2147483648,0,0,0]));g=f(g,c);return a.encrypt(f(d(f(h,
+d(h))),g))},G:function(a){return[a[0]<<1^a[1]>>>31,a[1]<<1^a[2]>>>31,a[2]<<1^a[3]>>>31,a[3]<<1^135*(a[0]>>>31)]}};
+sjcl.mode.gcm={name:"gcm",encrypt:function(a,b,c,d,e){var f=b.slice(0);b=sjcl.bitArray;d=d||[];a=sjcl.mode.gcm.n(!0,a,f,d,c,e||128);return b.concat(a.data,a.tag)},decrypt:function(a,b,c,d,e){var f=b.slice(0),g=sjcl.bitArray,h=g.bitLength(f);e=e||128;d=d||[];e<=h?(b=g.bitSlice(f,h-e),f=g.bitSlice(f,0,h-e)):(b=f,f=[]);a=sjcl.mode.gcm.n(u,a,f,d,c,e);g.equal(a.tag,b)||q(new sjcl.exception.corrupt("gcm: tag doesn't match"));return a.data},U:function(a,b){var c,d,e,f,g,h=sjcl.bitArray.k;e=[0,0,0,0];f=b.slice(0);
+for(c=0;128>c;c++){(d=0!==(a[Math.floor(c/32)]&1<<31-c%32))&&(e=h(e,f));g=0!==(f[3]&1);for(d=3;0<d;d--)f[d]=f[d]>>>1|(f[d-1]&1)<<31;f[0]>>>=1;g&&(f[0]^=-0x1f000000)}return e},f:function(a,b,c){var d,e=c.length;b=b.slice(0);for(d=0;d<e;d+=4)b[0]^=0xffffffff&c[d],b[1]^=0xffffffff&c[d+1],b[2]^=0xffffffff&c[d+2],b[3]^=0xffffffff&c[d+3],b=sjcl.mode.gcm.U(b,a);return b},n:function(a,b,c,d,e,f){var g,h,l,k,n,m,p,s,r=sjcl.bitArray;m=c.length;p=r.bitLength(c);s=r.bitLength(d);h=r.bitLength(e);g=b.encrypt([0,
+0,0,0]);96===h?(e=e.slice(0),e=r.concat(e,[1])):(e=sjcl.mode.gcm.f(g,[0,0,0,0],e),e=sjcl.mode.gcm.f(g,e,[0,0,Math.floor(h/0x100000000),h&0xffffffff]));h=sjcl.mode.gcm.f(g,[0,0,0,0],d);n=e.slice(0);d=h.slice(0);a||(d=sjcl.mode.gcm.f(g,h,c));for(k=0;k<m;k+=4)n[3]++,l=b.encrypt(n),c[k]^=l[0],c[k+1]^=l[1],c[k+2]^=l[2],c[k+3]^=l[3];c=r.clamp(c,p);a&&(d=sjcl.mode.gcm.f(g,h,c));a=[Math.floor(s/0x100000000),s&0xffffffff,Math.floor(p/0x100000000),p&0xffffffff];d=sjcl.mode.gcm.f(g,d,a);l=b.encrypt(e);d[0]^=l[0];
+d[1]^=l[1];d[2]^=l[2];d[3]^=l[3];return{tag:r.bitSlice(d,0,f),data:c}}};sjcl.misc.hmac=function(a,b){this.L=b=b||sjcl.hash.sha256;var c=[[],[]],d,e=b.prototype.blockSize/32;this.o=[new b,new b];a.length>e&&(a=b.hash(a));for(d=0;d<e;d++)c[0][d]=a[d]^909522486,c[1][d]=a[d]^1549556828;this.o[0].update(c[0]);this.o[1].update(c[1])};sjcl.misc.hmac.prototype.encrypt=sjcl.misc.hmac.prototype.mac=function(a){a=(new this.L(this.o[0])).update(a).finalize();return(new this.L(this.o[1])).update(a).finalize()};
+sjcl.misc.pbkdf2=function(a,b,c,d,e){c=c||1E3;(0>d||0>c)&&q(sjcl.exception.invalid("invalid params to pbkdf2"));"string"===typeof a&&(a=sjcl.codec.utf8String.toBits(a));e=e||sjcl.misc.hmac;a=new e(a);var f,g,h,l,k=[],n=sjcl.bitArray;for(l=1;32*k.length<(d||1);l++){e=f=a.encrypt(n.concat(b,[l]));for(g=1;g<c;g++){f=a.encrypt(f);for(h=0;h<f.length;h++)e[h]^=f[h]}k=k.concat(e)}d&&(k=n.clamp(k,d));return k};
+sjcl.prng=function(a){this.b=[new sjcl.hash.sha256];this.h=[0];this.F=0;this.t={};this.C=0;this.J={};this.N=this.c=this.i=this.T=0;this.a=[0,0,0,0,0,0,0,0];this.e=[0,0,0,0];this.A=t;this.B=a;this.p=u;this.z={progress:{},seeded:{}};this.l=this.S=0;this.u=1;this.w=2;this.Q=0x10000;this.H=[0,48,64,96,128,192,0x100,384,512,768,1024];this.R=3E4;this.P=80};
+sjcl.prng.prototype={randomWords:function(a,b){var c=[],d;d=this.isReady(b);var e;d===this.l&&q(new sjcl.exception.notReady("generator isn't seeded"));if(d&this.w){d=!(d&this.u);e=[];var f=0,g;this.N=e[0]=(new Date).valueOf()+this.R;for(g=0;16>g;g++)e.push(0x100000000*Math.random()|0);for(g=0;g<this.b.length&&!(e=e.concat(this.b[g].finalize()),f+=this.h[g],this.h[g]=0,!d&&this.F&1<<g);g++);this.F>=1<<this.b.length&&(this.b.push(new sjcl.hash.sha256),this.h.push(0));this.c-=f;f>this.i&&(this.i=f);this.F++;
+this.a=sjcl.hash.sha256.hash(this.a.concat(e));this.A=new sjcl.cipher.aes(this.a);for(d=0;4>d&&!(this.e[d]=this.e[d]+1|0,this.e[d]);d++);}for(d=0;d<a;d+=4)0===(d+1)%this.Q&&A(this),e=B(this),c.push(e[0],e[1],e[2],e[3]);A(this);return c.slice(0,a)},setDefaultParanoia:function(a){this.B=a},addEntropy:function(a,b,c){c=c||"user";var d,e,f=(new Date).valueOf(),g=this.t[c],h=this.isReady(),l=0;d=this.J[c];d===t&&(d=this.J[c]=this.T++);g===t&&(g=this.t[c]=0);this.t[c]=(this.t[c]+1)%this.b.length;switch(typeof a){case "number":b===
+t&&(b=1);this.b[g].update([d,this.C++,1,b,f,1,a|0]);break;case "object":c=Object.prototype.toString.call(a);if("[object Uint32Array]"===c){e=[];for(c=0;c<a.length;c++)e.push(a[c]);a=e}else{"[object Array]"!==c&&(l=1);for(c=0;c<a.length&&!l;c++)"number"!=typeof a[c]&&(l=1)}if(!l){if(b===t)for(c=b=0;c<a.length;c++)for(e=a[c];0<e;)b++,e>>>=1;this.b[g].update([d,this.C++,2,b,f,a.length].concat(a))}break;case "string":b===t&&(b=a.length);this.b[g].update([d,this.C++,3,b,f,a.length]);this.b[g].update(a);
+break;default:l=1}l&&q(new sjcl.exception.bug("random: addEntropy only supports number, array of numbers or string"));this.h[g]+=b;this.c+=b;h===this.l&&(this.isReady()!==this.l&&C("seeded",Math.max(this.i,this.c)),C("progress",this.getProgress()))},isReady:function(a){a=this.H[a!==t?a:this.B];return this.i&&this.i>=a?this.h[0]>this.P&&(new Date).valueOf()>this.N?this.w|this.u:this.u:this.c>=a?this.w|this.l:this.l},getProgress:function(a){a=this.H[a?a:this.B];return this.i>=a?1:this.c>a?1:this.c/
+a},startCollectors:function(){this.p||(window.addEventListener?(window.addEventListener("load",this.r,u),window.addEventListener("mousemove",this.s,u)):document.attachEvent?(document.attachEvent("onload",this.r),document.attachEvent("onmousemove",this.s)):q(new sjcl.exception.bug("can't attach event")),this.p=!0)},stopCollectors:function(){this.p&&(window.removeEventListener?(window.removeEventListener("load",this.r,u),window.removeEventListener("mousemove",this.s,u)):window.detachEvent&&(window.detachEvent("onload",
+this.r),window.detachEvent("onmousemove",this.s)),this.p=u)},addEventListener:function(a,b){this.z[a][this.S++]=b},removeEventListener:function(a,b){var c,d,e=this.z[a],f=[];for(d in e)e.hasOwnProperty(d)&&e[d]===b&&f.push(d);for(c=0;c<f.length;c++)d=f[c],delete e[d]},s:function(a){sjcl.random.addEntropy([a.x||a.clientX||a.offsetX||0,a.y||a.clientY||a.offsetY||0],2,"mouse")},r:function(){sjcl.random.addEntropy((new Date).valueOf(),2,"loadtime")}};
+function C(a,b){var c,d=sjcl.random.z[a],e=[];for(c in d)d.hasOwnProperty(c)&&e.push(d[c]);for(c=0;c<e.length;c++)e[c](b)}function A(a){a.a=B(a).concat(B(a));a.A=new sjcl.cipher.aes(a.a)}function B(a){for(var b=0;4>b&&!(a.e[b]=a.e[b]+1|0,a.e[b]);b++);return a.A.encrypt(a.e)}sjcl.random=new sjcl.prng(6);try{var D=new Uint32Array(32);crypto.getRandomValues(D);sjcl.random.addEntropy(D,1024,"crypto['getRandomValues']")}catch(E){}
+sjcl.json={defaults:{v:1,iter:1E3,ks:256,ts:64,mode:"ccm",adata:"",cipher:"aes"},encrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json,f=e.d({iv:sjcl.random.randomWords(4,0)},e.defaults),g;e.d(f,c);c=f.adata;"string"===typeof f.salt&&(f.salt=sjcl.codec.base64.toBits(f.salt));"string"===typeof f.iv&&(f.iv=sjcl.codec.base64.toBits(f.iv));(!sjcl.mode[f.mode]||!sjcl.cipher[f.cipher]||"string"===typeof a&&100>=f.iter||64!==f.ts&&96!==f.ts&&128!==f.ts||128!==f.ks&&192!==f.ks&&0x100!==f.ks||2>f.iv.length||
+4<f.iv.length)&&q(new sjcl.exception.invalid("json encrypt: invalid parameters"));"string"===typeof a&&(g=sjcl.misc.cachedPbkdf2(a,f),a=g.key.slice(0,f.ks/32),f.salt=g.salt);"string"===typeof b&&(b=sjcl.codec.utf8String.toBits(b));"string"===typeof c&&(c=sjcl.codec.utf8String.toBits(c));g=new sjcl.cipher[f.cipher](a);e.d(d,f);d.key=a;f.ct=sjcl.mode[f.mode].encrypt(g,b,f.iv,c,f.ts);return e.encode(f)},decrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json;b=e.d(e.d(e.d({},e.defaults),e.decode(b)),
+c,!0);var f;c=b.adata;"string"===typeof b.salt&&(b.salt=sjcl.codec.base64.toBits(b.salt));"string"===typeof b.iv&&(b.iv=sjcl.codec.base64.toBits(b.iv));(!sjcl.mode[b.mode]||!sjcl.cipher[b.cipher]||"string"===typeof a&&100>=b.iter||64!==b.ts&&96!==b.ts&&128!==b.ts||128!==b.ks&&192!==b.ks&&0x100!==b.ks||!b.iv||2>b.iv.length||4<b.iv.length)&&q(new sjcl.exception.invalid("json decrypt: invalid parameters"));"string"===typeof a&&(f=sjcl.misc.cachedPbkdf2(a,b),a=f.key.slice(0,b.ks/32),b.salt=f.salt);"string"===
+typeof c&&(c=sjcl.codec.utf8String.toBits(c));f=new sjcl.cipher[b.cipher](a);c=sjcl.mode[b.mode].decrypt(f,b.ct,b.iv,c,b.ts);e.d(d,b);d.key=a;return sjcl.codec.utf8String.fromBits(c)},encode:function(a){var b,c="{",d="";for(b in a)if(a.hasOwnProperty(b))switch(b.match(/^[a-z0-9]+$/i)||q(new sjcl.exception.invalid("json encode: invalid property name")),c+=d+'"'+b+'":',d=",",typeof a[b]){case "number":case "boolean":c+=a[b];break;case "string":c+='"'+escape(a[b])+'"';break;case "object":c+='"'+sjcl.codec.base64.fromBits(a[b],
+0)+'"';break;default:q(new sjcl.exception.bug("json encode: unsupported type"))}return c+"}"},decode:function(a){a=a.replace(/\s/g,"");a.match(/^\{.*\}$/)||q(new sjcl.exception.invalid("json decode: this isn't json!"));a=a.replace(/^\{|\}$/g,"").split(/,/);var b={},c,d;for(c=0;c<a.length;c++)(d=a[c].match(/^(?:(["']?)([a-z][a-z0-9]*)\1):(?:(\d+)|"([a-z0-9+\/%*_.@=\-]*)")$/i))||q(new sjcl.exception.invalid("json decode: this isn't json!")),b[d[2]]=d[3]?parseInt(d[3],10):d[2].match(/^(ct|salt|iv)$/)?
+sjcl.codec.base64.toBits(d[4]):unescape(d[4]);return b},d:function(a,b,c){a===t&&(a={});if(b===t)return a;for(var d in b)b.hasOwnProperty(d)&&(c&&(a[d]!==t&&a[d]!==b[d])&&q(new sjcl.exception.invalid("required parameter overridden")),a[d]=b[d]);return a},X:function(a,b){var c={},d;for(d in a)a.hasOwnProperty(d)&&a[d]!==b[d]&&(c[d]=a[d]);return c},W:function(a,b){var c={},d;for(d=0;d<b.length;d++)a[b[d]]!==t&&(c[b[d]]=a[b[d]]);return c}};sjcl.encrypt=sjcl.json.encrypt;sjcl.decrypt=sjcl.json.decrypt;
+sjcl.misc.V={};sjcl.misc.cachedPbkdf2=function(a,b){var c=sjcl.misc.V,d;b=b||{};d=b.iter||1E3;c=c[a]=c[a]||{};d=c[d]=c[d]||{firstSalt:b.salt&&b.salt.length?b.salt.slice(0):sjcl.random.randomWords(2,0)};c=b.salt===t?d.firstSalt:b.salt;d[c]=d[c]||sjcl.misc.pbkdf2(a,c,b.iter);return{key:d[c].slice(0),salt:c.slice(0)}};
diff --git a/merged-styles.css b/merged-styles.css
new file mode 100644
index 0000000..35ddd64
--- /dev/null
+++ b/merged-styles.css
@@ -0,0 +1,681 @@
+#random{
+    /* BOX MODEL */
+    width: 100%;
+    height: 99%;
+    border: 1px solid black;
+    
+    /* ENHANCEMENT */
+    /* background-image: url('https://source.unsplash.com/user/aryakrisdyantara'); */
+    background-position: center center;
+    background-size: cover;
+    background-repeat: no-repeat;  
+  }
+
+
+  .CodeMirror-dialog {
+    position: absolute;
+    left: 0; right: 0;
+    background: inherit;
+    z-index: 15;
+    padding: .1em .8em;
+    overflow: hidden;
+    color: inherit;
+  }
+  
+  .CodeMirror-dialog-top {
+    border-bottom: 1px solid #eee;
+    top: 0;
+  }
+  
+  .CodeMirror-dialog-bottom {
+    border-top: 1px solid #eee;
+    bottom: 0;
+  }
+  
+  .CodeMirror-dialog input {
+    border: none;
+    outline: none;
+    background: transparent;
+    width: 20em;
+    color: inherit;
+    font-family: monospace;
+  }
+  
+  .CodeMirror-dialog button {
+    font-size: 70%;
+  }
+  /* BASICS */
+
+.CodeMirror {
+    /* Set height, width, borders, and global font properties here */
+    font-family: monospace;
+    height: 300px;
+    color: black;
+    direction: ltr;
+  }
+  
+  /* PADDING */
+  
+  .CodeMirror-lines {
+    padding: 4px 0; /* Vertical padding around content */
+  }
+  .CodeMirror pre.CodeMirror-line,
+  .CodeMirror pre.CodeMirror-line-like {
+    padding: 0 4px; /* Horizontal padding of content */
+  }
+  
+  .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
+    background-color: white; /* The little square between H and V scrollbars */
+  }
+  
+  /* GUTTER */
+  
+  .CodeMirror-gutters {
+    border-right: 1px solid #ddd;
+    background-color: #f7f7f7;
+    white-space: nowrap;
+  }
+  .CodeMirror-linenumbers {}
+  .CodeMirror-linenumber {
+    padding: 0 3px 0 5px;
+    min-width: 20px;
+    text-align: right;
+    color: #999;
+    white-space: nowrap;
+  }
+  
+  .CodeMirror-guttermarker { color: black; }
+  .CodeMirror-guttermarker-subtle { color: #999; }
+  
+  /* CURSOR */
+  
+  .CodeMirror-cursor {
+    border-left: 1px solid black;
+    border-right: none;
+    width: 0;
+  }
+  /* Shown when moving in bi-directional text */
+  .CodeMirror div.CodeMirror-secondarycursor {
+    border-left: 1px solid silver;
+  }
+  .cm-fat-cursor .CodeMirror-cursor {
+    width: auto;
+    border: 0 !important;
+    background: #7e7;
+  }
+  .cm-fat-cursor div.CodeMirror-cursors {
+    z-index: 1;
+  }
+  .cm-fat-cursor-mark {
+    background-color: rgba(20, 255, 20, 0.5);
+    -webkit-animation: blink 1.06s steps(1) infinite;
+    -moz-animation: blink 1.06s steps(1) infinite;
+    animation: blink 1.06s steps(1) infinite;
+  }
+  .cm-animate-fat-cursor {
+    width: auto;
+    border: 0;
+    -webkit-animation: blink 1.06s steps(1) infinite;
+    -moz-animation: blink 1.06s steps(1) infinite;
+    animation: blink 1.06s steps(1) infinite;
+    background-color: #7e7;
+  }
+  @-moz-keyframes blink {
+    0% {}
+    50% { background-color: transparent; }
+    100% {}
+  }
+  @-webkit-keyframes blink {
+    0% {}
+    50% { background-color: transparent; }
+    100% {}
+  }
+  @keyframes blink {
+    0% {}
+    50% { background-color: transparent; }
+    100% {}
+  }
+  
+  /* Can style cursor different in overwrite (non-insert) mode */
+  .CodeMirror-overwrite .CodeMirror-cursor {}
+  
+  .cm-tab { display: inline-block; text-decoration: inherit; }
+  
+  .CodeMirror-rulers {
+    position: absolute;
+    left: 0; right: 0; top: -50px; bottom: 0;
+    overflow: hidden;
+  }
+  .CodeMirror-ruler {
+    border-left: 1px solid #ccc;
+    top: 0; bottom: 0;
+    position: absolute;
+  }
+  
+  /* DEFAULT THEME */
+  
+  .cm-s-default .cm-header {color: blue;}
+  .cm-s-default .cm-quote {color: #090;}
+  .cm-negative {color: #d44;}
+  .cm-positive {color: #292;}
+  .cm-header, .cm-strong {font-weight: bold;}
+  .cm-em {font-style: italic;}
+  .cm-link {text-decoration: underline;}
+  .cm-strikethrough {text-decoration: line-through;}
+  
+  .cm-s-default .cm-keyword {color: #708;}
+  .cm-s-default .cm-atom {color: #219;}
+  .cm-s-default .cm-number {color: #164;}
+  .cm-s-default .cm-def {color: #00f;}
+  .cm-s-default .cm-variable,
+  .cm-s-default .cm-punctuation,
+  .cm-s-default .cm-property,
+  .cm-s-default .cm-operator {}
+  .cm-s-default .cm-variable-2 {color: #05a;}
+  .cm-s-default .cm-variable-3, .cm-s-default .cm-type {color: #085;}
+  .cm-s-default .cm-comment {color: #a50;}
+  .cm-s-default .cm-string {color: #a11;}
+  .cm-s-default .cm-string-2 {color: #f50;}
+  .cm-s-default .cm-meta {color: #555;}
+  .cm-s-default .cm-qualifier {color: #555;}
+  .cm-s-default .cm-builtin {color: #30a;}
+  .cm-s-default .cm-bracket {color: #997;}
+  .cm-s-default .cm-tag {color: #170;}
+  .cm-s-default .cm-attribute {color: #00c;}
+  .cm-s-default .cm-hr {color: #999;}
+  .cm-s-default .cm-link {color: #00c;}
+  
+  .cm-s-default .cm-error {color: #f00;}
+  .cm-invalidchar {color: #f00;}
+  
+  .CodeMirror-composing { border-bottom: 2px solid; }
+  
+  /* Default styles for common addons */
+  
+  div.CodeMirror span.CodeMirror-matchingbracket {color: #0b0;}
+  div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #a22;}
+  .CodeMirror-matchingtag { background: rgba(255, 150, 0, .3); }
+  .CodeMirror-activeline-background {background: #e8f2ff;}
+  
+  /* STOP */
+  
+  /* The rest of this file contains styles related to the mechanics of
+     the editor. You probably shouldn't touch them. */
+  
+  .CodeMirror {
+    position: relative;
+    overflow: hidden;
+    background: white;
+  }
+  
+  .CodeMirror-scroll {
+    overflow: scroll !important; /* Things will break if this is overridden */
+    /* 30px is the magic margin used to hide the element's real scrollbars */
+    /* See overflow: hidden in .CodeMirror */
+    margin-bottom: -30px; margin-right: -30px;
+    padding-bottom: 30px;
+    height: 100%;
+    outline: none; /* Prevent dragging from highlighting the element */
+    position: relative;
+  }
+  .CodeMirror-sizer {
+    position: relative;
+    border-right: 30px solid transparent;
+  }
+  
+  /* The fake, visible scrollbars. Used to force redraw during scrolling
+     before actual scrolling happens, thus preventing shaking and
+     flickering artifacts. */
+  .CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
+    position: absolute;
+    z-index: 6;
+    display: none;
+  }
+  .CodeMirror-vscrollbar {
+    right: 0; top: 0;
+    overflow-x: hidden;
+    overflow-y: scroll;
+  }
+  .CodeMirror-hscrollbar {
+    bottom: 0; left: 0;
+    overflow-y: hidden;
+    overflow-x: scroll;
+  }
+  .CodeMirror-scrollbar-filler {
+    right: 0; bottom: 0;
+  }
+  .CodeMirror-gutter-filler {
+    left: 0; bottom: 0;
+  }
+  
+  .CodeMirror-gutters {
+    position: absolute; left: 0; top: 0;
+    min-height: 100%;
+    z-index: 3;
+  }
+  .CodeMirror-gutter {
+    white-space: normal;
+    height: 100%;
+    display: inline-block;
+    vertical-align: top;
+    margin-bottom: -30px;
+  }
+  .CodeMirror-gutter-wrapper {
+    position: absolute;
+    z-index: 4;
+    background: none !important;
+    border: none !important;
+  }
+  .CodeMirror-gutter-background {
+    position: absolute;
+    top: 0; bottom: 0;
+    z-index: 4;
+  }
+  .CodeMirror-gutter-elt {
+    position: absolute;
+    cursor: default;
+    z-index: 4;
+  }
+  .CodeMirror-gutter-wrapper ::selection { background-color: transparent }
+  .CodeMirror-gutter-wrapper ::-moz-selection { background-color: transparent }
+  
+  .CodeMirror-lines {
+    cursor: text;
+    min-height: 1px; /* prevents collapsing before first draw */
+  }
+  .CodeMirror pre.CodeMirror-line,
+  .CodeMirror pre.CodeMirror-line-like {
+    /* Reset some styles that the rest of the page might have set */
+    border-radius: 0; -webkit-border-radius: 0; border-radius: 0;
+    border-width: 0;
+    background: transparent;
+    font-family: inherit;
+    font-size: inherit;
+    margin: 0;
+    white-space: pre;
+    word-wrap: normal;
+    line-height: inherit;
+    color: inherit;
+    z-index: 2;
+    position: relative;
+    overflow: visible;
+    -webkit-tap-highlight-color: transparent;
+    -webkit-font-variant-ligatures: contextual;
+    font-variant-ligatures: contextual;
+  }
+  .CodeMirror-wrap pre.CodeMirror-line,
+  .CodeMirror-wrap pre.CodeMirror-line-like {
+    word-wrap: break-word;
+    white-space: pre-wrap;
+    word-break: normal;
+  }
+  
+  .CodeMirror-linebackground {
+    position: absolute;
+    left: 0; right: 0; top: 0; bottom: 0;
+    z-index: 0;
+  }
+  
+  .CodeMirror-linewidget {
+    position: relative;
+    z-index: 2;
+    padding: 0.1px; /* Force widget margins to stay inside of the container */
+  }
+  
+  .CodeMirror-widget {}
+  
+  .CodeMirror-rtl pre { direction: rtl; }
+  
+  .CodeMirror-code {
+    outline: none;
+  }
+  
+  /* Force content-box sizing for the elements where we expect it */
+  .CodeMirror-scroll,
+  .CodeMirror-sizer,
+  .CodeMirror-gutter,
+  .CodeMirror-gutters,
+  .CodeMirror-linenumber {
+    -moz-box-sizing: content-box;
+    box-sizing: content-box;
+  }
+  
+  .CodeMirror-measure {
+    position: absolute;
+    width: 100%;
+    height: 0;
+    overflow: hidden;
+    visibility: hidden;
+  }
+  
+  .CodeMirror-cursor {
+    position: absolute;
+    pointer-events: none;
+  }
+  .CodeMirror-measure pre { position: static; }
+  
+  div.CodeMirror-cursors {
+    visibility: hidden;
+    position: relative;
+    z-index: 3;
+  }
+  div.CodeMirror-dragcursors {
+    visibility: visible;
+  }
+  
+  .CodeMirror-focused div.CodeMirror-cursors {
+    visibility: visible;
+  }
+  
+  .CodeMirror-selected { background: #d9d9d9; }
+  .CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
+  .CodeMirror-crosshair { cursor: crosshair; }
+  .CodeMirror-line::selection, .CodeMirror-line > span::selection, .CodeMirror-line > span > span::selection { background: #d7d4f0; }
+  .CodeMirror-line::-moz-selection, .CodeMirror-line > span::-moz-selection, .CodeMirror-line > span > span::-moz-selection { background: #d7d4f0; }
+  
+  .cm-searching {
+    background-color: #ffa;
+    background-color: rgba(255, 255, 0, .4);
+  }
+  
+  /* Used to force a border model for a node */
+  .cm-force-border { padding-right: .1px; }
+  
+  @media print {
+    /* Hide the cursor when printing */
+    .CodeMirror div.CodeMirror-cursors {
+      visibility: hidden;
+    }
+  }
+  
+  /* See issue #2901 */
+  .cm-tab-wrap-hack:after { content: ''; }
+  
+  /* Help users use markselection to safely style text background */
+  span.CodeMirror-selectedtext { background: none; }
+  
+
+
+/* CSS */
+.button-3 {
+  appearance: none;
+  background-color: #2ea44f;
+  border: 1px solid rgba(27, 31, 35, .15);
+  border-radius: 6px;
+  box-shadow: rgba(27, 31, 35, .1) 0 1px 0;
+  box-sizing: border-box;
+  color: #fff;
+  cursor: pointer;
+  display: inline-block;
+  font-family: -apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
+  font-size: 14px;
+  font-weight: 600;
+  line-height: 20px;
+  padding: 6px 16px;
+  position: relative;
+  text-align: center;
+  text-decoration: none;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+  vertical-align: middle;
+  white-space: nowrap;
+}
+
+.button-3:focus:not(:focus-visible):not(.focus-visible) {
+  box-shadow: none;
+  outline: none;
+}
+
+.button-3:hover {
+  background-color: #2c974b;
+}
+
+.button-3:focus {
+  box-shadow: rgba(46, 164, 79, .4) 0 0 0 3px;
+  outline: none;
+}
+
+.button-3:disabled {
+  background-color: #94d3a2;
+  border-color: rgba(27, 31, 35, .1);
+  color: rgba(255, 255, 255, .8);
+  cursor: default;
+}
+
+.button-3:active {
+  background-color: #298e46;
+  box-shadow: rgba(20, 70, 32, .2) 0 1px 0 inset;
+}
+
+/* CSS */
+.button-2 {
+  appearance: none;
+  background-color: #eeeeee;
+  border: 1px solid rgba(27, 31, 35, .15);
+  border-radius: 6px;
+  box-shadow: rgba(27, 31, 35, .1) 0 1px 0;
+  box-sizing: border-box;
+  color: #fff;
+  cursor: pointer;
+  display: inline-block;
+  font-family: -apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
+  font-size: 14px;
+  font-weight: 600;
+  line-height: 20px;
+  padding: 6px 16px;
+  position: relative;
+  text-align: center;
+  text-decoration: none;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+  vertical-align: middle;
+  white-space: nowrap;
+}
+
+.button-2:focus:not(:focus-visible):not(.focus-visible) {
+  box-shadow: none;
+  outline: none;
+}
+
+.button-2:hover {
+  background-color: #aaaaaa;
+}
+
+.button-2:focus {
+  box-shadow: rgba(46, 164, 79, .4) 0 0 0 3px;
+  outline: none;
+}
+
+.button-2:disabled {
+  background-color: #bbbbbb;
+  border-color: rgba(27, 31, 35, .1);
+  color: rgba(255, 255, 255, .8);
+  cursor: default;
+}
+
+.button-2:active {
+  background-color: #298e46;
+  box-shadow: rgba(20, 70, 32, .2) 0 1px 0 inset;
+}
+
+/* CSS */
+.button-62 {
+  background: linear-gradient(to bottom right, #EF4765, #FF9A5A);
+  border: 0;
+  border-radius: 12px;
+  color: #FFFFFF;
+  cursor: pointer;
+  display: inline-block;
+  font-family: -apple-system,system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
+  font-size: 16px;
+  font-weight: 500;
+  line-height: 2.5;
+  outline: transparent;
+  padding: 0 1rem;
+  text-align: center;
+  text-decoration: none;
+  transition: box-shadow .2s ease-in-out;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+  white-space: nowrap;
+}
+
+.button-62:not([disabled]):focus {
+  box-shadow: 0 0 .25rem rgba(0, 0, 0, 0.5), -.125rem -.125rem 1rem rgba(239, 71, 101, 0.5), .125rem .125rem 1rem rgba(255, 154, 90, 0.5);
+}
+
+.button-62:not([disabled]):hover {
+  box-shadow: 0 0 .25rem rgba(0, 0, 0, 0.5), -.125rem -.125rem 1rem rgba(239, 71, 101, 0.5), .125rem .125rem 1rem rgba(255, 154, 90, 0.5);
+}
+
+
+/* CSS */
+.button-85 {
+  padding: 0.6em 2em;
+  border: none;
+  outline: none;
+  color: rgb(255, 255, 255);
+  background: #111;
+  cursor: pointer;
+  position: relative;
+  z-index: 0;
+  border-radius: 10px;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+}
+
+.button-85:before {
+  content: "";
+  background: linear-gradient(
+    45deg,
+    #ff0000,
+    #ff7300,
+    #fffb00,
+    #48ff00,
+    #00ffd5,
+    #002bff,
+    #7a00ff,
+    #ff00c8,
+    #ff0000
+  );
+  position: absolute;
+  top: -2px;
+  left: -2px;
+  background-size: 400%;
+  z-index: -1;
+  filter: blur(5px);
+  -webkit-filter: blur(5px);
+  width: calc(100% + 4px);
+  height: calc(100% + 4px);
+  animation: glowing-button-85 20s linear infinite;
+  transition: opacity 0.3s ease-in-out;
+  border-radius: 10px;
+}
+
+@keyframes glowing-button-85 {
+  0% {
+    background-position: 0 0;
+  }
+  50% {
+    background-position: 400% 0;
+  }
+  100% {
+    background-position: 0 0;
+  }
+}
+
+.button-85:after {
+  z-index: -1;
+  content: "";
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  background: #222;
+  left: 0;
+  top: 0;
+  border-radius: 10px;
+}
+
+/* CSS */
+.button-86 {
+  all: unset;
+  width: 100px;
+  height: 30px;
+  font-size: 16px;
+  background: transparent;
+  border: none;
+  position: relative;
+  color: #f0f0f0;
+  cursor: pointer;
+  z-index: 1;
+  padding: 10px 20px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  white-space: nowrap;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+}
+
+.button-86::after,
+.button-86::before {
+  content: '';
+  position: absolute;
+  bottom: 0;
+  right: 0;
+  z-index: -99999;
+  transition: all .4s;
+}
+
+.button-86::before {
+  transform: translate(0%, 0%);
+  width: 100%;
+  height: 100%;
+  background: #28282d;
+  border-radius: 10px;
+}
+
+.button-86::after {
+  transform: translate(10px, 10px);
+  width: 35px;
+  height: 35px;
+  background: #ffffff15;
+  backdrop-filter: blur(5px);
+  -webkit-backdrop-filter: blur(5px);
+  border-radius: 50px;
+}
+
+.button-86:hover::before {
+  transform: translate(5%, 20%);
+  width: 110%;
+  height: 110%;
+}
+
+.button-86:hover::after {
+  border-radius: 10px;
+  transform: translate(0, 0);
+  width: 100%;
+  height: 100%;
+}
+
+.button-86:active::after {
+  transition: 0s;
+  transform: translate(0, 5%);
+}
+.CodeMirror-wrap {
+	opacity: 0.9;
+  border-radius: 10px;
+}
+.container-editor {
+  border-radius: 12px;
+	opacity: 0.85;
+}
+
+.round-15 {
+  border-radius: 10px;
+}
\ No newline at end of file
diff --git a/sjcl.js b/sjcl.js
index 3a1c15b..adb054d 100644
--- a/sjcl.js
+++ b/sjcl.js
@@ -38,7 +38,7 @@ break;default:l=1}l&&q(new sjcl.exception.bug("random: addEntropy only supports
 a},startCollectors:function(){this.p||(window.addEventListener?(window.addEventListener("load",this.r,u),window.addEventListener("mousemove",this.s,u)):document.attachEvent?(document.attachEvent("onload",this.r),document.attachEvent("onmousemove",this.s)):q(new sjcl.exception.bug("can't attach event")),this.p=!0)},stopCollectors:function(){this.p&&(window.removeEventListener?(window.removeEventListener("load",this.r,u),window.removeEventListener("mousemove",this.s,u)):window.detachEvent&&(window.detachEvent("onload",
 this.r),window.detachEvent("onmousemove",this.s)),this.p=u)},addEventListener:function(a,b){this.z[a][this.S++]=b},removeEventListener:function(a,b){var c,d,e=this.z[a],f=[];for(d in e)e.hasOwnProperty(d)&&e[d]===b&&f.push(d);for(c=0;c<f.length;c++)d=f[c],delete e[d]},s:function(a){sjcl.random.addEntropy([a.x||a.clientX||a.offsetX||0,a.y||a.clientY||a.offsetY||0],2,"mouse")},r:function(){sjcl.random.addEntropy((new Date).valueOf(),2,"loadtime")}};
 function C(a,b){var c,d=sjcl.random.z[a],e=[];for(c in d)d.hasOwnProperty(c)&&e.push(d[c]);for(c=0;c<e.length;c++)e[c](b)}function A(a){a.a=B(a).concat(B(a));a.A=new sjcl.cipher.aes(a.a)}function B(a){for(var b=0;4>b&&!(a.e[b]=a.e[b]+1|0,a.e[b]);b++);return a.A.encrypt(a.e)}sjcl.random=new sjcl.prng(6);try{var D=new Uint32Array(32);crypto.getRandomValues(D);sjcl.random.addEntropy(D,1024,"crypto['getRandomValues']")}catch(E){}
-sjcl.json={defaults:{v:1,iter:1E3,ks:128,ts:64,mode:"ccm",adata:"",cipher:"aes"},encrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json,f=e.d({iv:sjcl.random.randomWords(4,0)},e.defaults),g;e.d(f,c);c=f.adata;"string"===typeof f.salt&&(f.salt=sjcl.codec.base64.toBits(f.salt));"string"===typeof f.iv&&(f.iv=sjcl.codec.base64.toBits(f.iv));(!sjcl.mode[f.mode]||!sjcl.cipher[f.cipher]||"string"===typeof a&&100>=f.iter||64!==f.ts&&96!==f.ts&&128!==f.ts||128!==f.ks&&192!==f.ks&&0x100!==f.ks||2>f.iv.length||
+sjcl.json={defaults:{v:1,iter:1E3,ks:256,ts:64,mode:"ccm",adata:"",cipher:"aes"},encrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json,f=e.d({iv:sjcl.random.randomWords(4,0)},e.defaults),g;e.d(f,c);c=f.adata;"string"===typeof f.salt&&(f.salt=sjcl.codec.base64.toBits(f.salt));"string"===typeof f.iv&&(f.iv=sjcl.codec.base64.toBits(f.iv));(!sjcl.mode[f.mode]||!sjcl.cipher[f.cipher]||"string"===typeof a&&100>=f.iter||64!==f.ts&&96!==f.ts&&128!==f.ts||128!==f.ks&&192!==f.ks&&0x100!==f.ks||2>f.iv.length||
 4<f.iv.length)&&q(new sjcl.exception.invalid("json encrypt: invalid parameters"));"string"===typeof a&&(g=sjcl.misc.cachedPbkdf2(a,f),a=g.key.slice(0,f.ks/32),f.salt=g.salt);"string"===typeof b&&(b=sjcl.codec.utf8String.toBits(b));"string"===typeof c&&(c=sjcl.codec.utf8String.toBits(c));g=new sjcl.cipher[f.cipher](a);e.d(d,f);d.key=a;f.ct=sjcl.mode[f.mode].encrypt(g,b,f.iv,c,f.ts);return e.encode(f)},decrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json;b=e.d(e.d(e.d({},e.defaults),e.decode(b)),
 c,!0);var f;c=b.adata;"string"===typeof b.salt&&(b.salt=sjcl.codec.base64.toBits(b.salt));"string"===typeof b.iv&&(b.iv=sjcl.codec.base64.toBits(b.iv));(!sjcl.mode[b.mode]||!sjcl.cipher[b.cipher]||"string"===typeof a&&100>=b.iter||64!==b.ts&&96!==b.ts&&128!==b.ts||128!==b.ks&&192!==b.ks&&0x100!==b.ks||!b.iv||2>b.iv.length||4<b.iv.length)&&q(new sjcl.exception.invalid("json decrypt: invalid parameters"));"string"===typeof a&&(f=sjcl.misc.cachedPbkdf2(a,b),a=f.key.slice(0,b.ks/32),b.salt=f.salt);"string"===
 typeof c&&(c=sjcl.codec.utf8String.toBits(c));f=new sjcl.cipher[b.cipher](a);c=sjcl.mode[b.mode].decrypt(f,b.ct,b.iv,c,b.ts);e.d(d,b);d.key=a;return sjcl.codec.utf8String.fromBits(c)},encode:function(a){var b,c="{",d="";for(b in a)if(a.hasOwnProperty(b))switch(b.match(/^[a-z0-9]+$/i)||q(new sjcl.exception.invalid("json encode: invalid property name")),c+=d+'"'+b+'":',d=",",typeof a[b]){case "number":case "boolean":c+=a[b];break;case "string":c+='"'+escape(a[b])+'"';break;case "object":c+='"'+sjcl.codec.base64.fromBits(a[b],
diff --git a/sublime.js b/sublime.js
new file mode 100644
index 0000000..7edf172
--- /dev/null
+++ b/sublime.js
@@ -0,0 +1,714 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+// A rough approximation of Sublime Text's keybindings
+// Depends on addon/search/searchcursor.js and optionally addon/dialog/dialogs.js
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/edit/matchbrackets"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/edit/matchbrackets"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  var cmds = CodeMirror.commands;
+  var Pos = CodeMirror.Pos;
+
+  // This is not exactly Sublime's algorithm. I couldn't make heads or tails of that.
+  function findPosSubword(doc, start, dir) {
+    if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));
+    var line = doc.getLine(start.line);
+    if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));
+    var state = "start", type, startPos = start.ch;
+    for (var pos = startPos, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
+      var next = line.charAt(dir < 0 ? pos - 1 : pos);
+      var cat = next != "_" && CodeMirror.isWordChar(next) ? "w" : "o";
+      if (cat == "w" && next.toUpperCase() == next) cat = "W";
+      if (state == "start") {
+        if (cat != "o") { state = "in"; type = cat; }
+        else startPos = pos + dir
+      } else if (state == "in") {
+        if (type != cat) {
+          if (type == "w" && cat == "W" && dir < 0) pos--;
+          if (type == "W" && cat == "w" && dir > 0) { // From uppercase to lowercase
+            if (pos == startPos + 1) { type = "w"; continue; }
+            else pos--;
+          }
+          break;
+        }
+      }
+    }
+    return Pos(start.line, pos);
+  }
+
+  function moveSubword(cm, dir) {
+    cm.extendSelectionsBy(function(range) {
+      if (cm.display.shift || cm.doc.extend || range.empty())
+        return findPosSubword(cm.doc, range.head, dir);
+      else
+        return dir < 0 ? range.from() : range.to();
+    });
+  }
+
+  cmds.goSubwordLeft = function(cm) { moveSubword(cm, -1); };
+  cmds.goSubwordRight = function(cm) { moveSubword(cm, 1); };
+
+  cmds.scrollLineUp = function(cm) {
+    var info = cm.getScrollInfo();
+    if (!cm.somethingSelected()) {
+      var visibleBottomLine = cm.lineAtHeight(info.top + info.clientHeight, "local");
+      if (cm.getCursor().line >= visibleBottomLine)
+        cm.execCommand("goLineUp");
+    }
+    cm.scrollTo(null, info.top - cm.defaultTextHeight());
+  };
+  cmds.scrollLineDown = function(cm) {
+    var info = cm.getScrollInfo();
+    if (!cm.somethingSelected()) {
+      var visibleTopLine = cm.lineAtHeight(info.top, "local")+1;
+      if (cm.getCursor().line <= visibleTopLine)
+        cm.execCommand("goLineDown");
+    }
+    cm.scrollTo(null, info.top + cm.defaultTextHeight());
+  };
+
+  cmds.splitSelectionByLine = function(cm) {
+    var ranges = cm.listSelections(), lineRanges = [];
+    for (var i = 0; i < ranges.length; i++) {
+      var from = ranges[i].from(), to = ranges[i].to();
+      for (var line = from.line; line <= to.line; ++line)
+        if (!(to.line > from.line && line == to.line && to.ch == 0))
+          lineRanges.push({anchor: line == from.line ? from : Pos(line, 0),
+                           head: line == to.line ? to : Pos(line)});
+    }
+    cm.setSelections(lineRanges, 0);
+  };
+
+  cmds.singleSelectionTop = function(cm) {
+    var range = cm.listSelections()[0];
+    cm.setSelection(range.anchor, range.head, {scroll: false});
+  };
+
+  cmds.selectLine = function(cm) {
+    var ranges = cm.listSelections(), extended = [];
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i];
+      extended.push({anchor: Pos(range.from().line, 0),
+                     head: Pos(range.to().line + 1, 0)});
+    }
+    cm.setSelections(extended);
+  };
+
+  function insertLine(cm, above) {
+    if (cm.isReadOnly()) return CodeMirror.Pass
+    cm.operation(function() {
+      var len = cm.listSelections().length, newSelection = [], last = -1;
+      for (var i = 0; i < len; i++) {
+        var head = cm.listSelections()[i].head;
+        if (head.line <= last) continue;
+        var at = Pos(head.line + (above ? 0 : 1), 0);
+        cm.replaceRange("\n", at, null, "+insertLine");
+        cm.indentLine(at.line, null, true);
+        newSelection.push({head: at, anchor: at});
+        last = head.line + 1;
+      }
+      cm.setSelections(newSelection);
+    });
+    cm.execCommand("indentAuto");
+  }
+
+  cmds.insertLineAfter = function(cm) { return insertLine(cm, false); };
+
+  cmds.insertLineBefore = function(cm) { return insertLine(cm, true); };
+
+  function wordAt(cm, pos) {
+    var start = pos.ch, end = start, line = cm.getLine(pos.line);
+    while (start && CodeMirror.isWordChar(line.charAt(start - 1))) --start;
+    while (end < line.length && CodeMirror.isWordChar(line.charAt(end))) ++end;
+    return {from: Pos(pos.line, start), to: Pos(pos.line, end), word: line.slice(start, end)};
+  }
+
+  cmds.selectNextOccurrence = function(cm) {
+    var from = cm.getCursor("from"), to = cm.getCursor("to");
+    var fullWord = cm.state.sublimeFindFullWord == cm.doc.sel;
+    if (CodeMirror.cmpPos(from, to) == 0) {
+      var word = wordAt(cm, from);
+      if (!word.word) return;
+      cm.setSelection(word.from, word.to);
+      fullWord = true;
+    } else {
+      var text = cm.getRange(from, to);
+      var query = fullWord ? new RegExp("\\b" + text + "\\b") : text;
+      var cur = cm.getSearchCursor(query, to);
+      var found = cur.findNext();
+      if (!found) {
+        cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));
+        found = cur.findNext();
+      }
+      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to())) return
+      cm.addSelection(cur.from(), cur.to());
+    }
+    if (fullWord)
+      cm.state.sublimeFindFullWord = cm.doc.sel;
+  };
+
+  cmds.skipAndSelectNextOccurrence = function(cm) {
+    var prevAnchor = cm.getCursor("anchor"), prevHead = cm.getCursor("head");
+    cmds.selectNextOccurrence(cm);
+    if (CodeMirror.cmpPos(prevAnchor, prevHead) != 0) {
+      cm.doc.setSelections(cm.doc.listSelections()
+          .filter(function (sel) {
+            return sel.anchor != prevAnchor || sel.head != prevHead;
+          }));
+    }
+  }
+
+  function addCursorToSelection(cm, dir) {
+    var ranges = cm.listSelections(), newRanges = [];
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i];
+      var newAnchor = cm.findPosV(
+          range.anchor, dir, "line", range.anchor.goalColumn);
+      var newHead = cm.findPosV(
+          range.head, dir, "line", range.head.goalColumn);
+      newAnchor.goalColumn = range.anchor.goalColumn != null ?
+          range.anchor.goalColumn : cm.cursorCoords(range.anchor, "div").left;
+      newHead.goalColumn = range.head.goalColumn != null ?
+          range.head.goalColumn : cm.cursorCoords(range.head, "div").left;
+      var newRange = {anchor: newAnchor, head: newHead};
+      newRanges.push(range);
+      newRanges.push(newRange);
+    }
+    cm.setSelections(newRanges);
+  }
+  cmds.addCursorToPrevLine = function(cm) { addCursorToSelection(cm, -1); };
+  cmds.addCursorToNextLine = function(cm) { addCursorToSelection(cm, 1); };
+
+  function isSelectedRange(ranges, from, to) {
+    for (var i = 0; i < ranges.length; i++)
+      if (CodeMirror.cmpPos(ranges[i].from(), from) == 0 &&
+          CodeMirror.cmpPos(ranges[i].to(), to) == 0) return true
+    return false
+  }
+
+  var mirror = "(){}[]";
+  function selectBetweenBrackets(cm) {
+    var ranges = cm.listSelections(), newRanges = []
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i], pos = range.head, opening = cm.scanForBracket(pos, -1);
+      if (!opening) return false;
+      for (;;) {
+        var closing = cm.scanForBracket(pos, 1);
+        if (!closing) return false;
+        if (closing.ch == mirror.charAt(mirror.indexOf(opening.ch) + 1)) {
+          var startPos = Pos(opening.pos.line, opening.pos.ch + 1);
+          if (CodeMirror.cmpPos(startPos, range.from()) == 0 &&
+              CodeMirror.cmpPos(closing.pos, range.to()) == 0) {
+            opening = cm.scanForBracket(opening.pos, -1);
+            if (!opening) return false;
+          } else {
+            newRanges.push({anchor: startPos, head: closing.pos});
+            break;
+          }
+        }
+        pos = Pos(closing.pos.line, closing.pos.ch + 1);
+      }
+    }
+    cm.setSelections(newRanges);
+    return true;
+  }
+
+  cmds.selectScope = function(cm) {
+    selectBetweenBrackets(cm) || cm.execCommand("selectAll");
+  };
+  cmds.selectBetweenBrackets = function(cm) {
+    if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;
+  };
+
+  function puncType(type) {
+    return !type ? null : /\bpunctuation\b/.test(type) ? type : undefined
+  }
+
+  cmds.goToBracket = function(cm) {
+    cm.extendSelectionsBy(function(range) {
+      var next = cm.scanForBracket(range.head, 1, puncType(cm.getTokenTypeAt(range.head)));
+      if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;
+      var prev = cm.scanForBracket(range.head, -1, puncType(cm.getTokenTypeAt(Pos(range.head.line, range.head.ch + 1))));
+      return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;
+    });
+  };
+
+  cmds.swapLineUp = function(cm) {
+    if (cm.isReadOnly()) return CodeMirror.Pass
+    var ranges = cm.listSelections(), linesToMove = [], at = cm.firstLine() - 1, newSels = [];
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i], from = range.from().line - 1, to = range.to().line;
+      newSels.push({anchor: Pos(range.anchor.line - 1, range.anchor.ch),
+                    head: Pos(range.head.line - 1, range.head.ch)});
+      if (range.to().ch == 0 && !range.empty()) --to;
+      if (from > at) linesToMove.push(from, to);
+      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
+      at = to;
+    }
+    cm.operation(function() {
+      for (var i = 0; i < linesToMove.length; i += 2) {
+        var from = linesToMove[i], to = linesToMove[i + 1];
+        var line = cm.getLine(from);
+        cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
+        if (to > cm.lastLine())
+          cm.replaceRange("\n" + line, Pos(cm.lastLine()), null, "+swapLine");
+        else
+          cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
+      }
+      cm.setSelections(newSels);
+      cm.scrollIntoView();
+    });
+  };
+
+  cmds.swapLineDown = function(cm) {
+    if (cm.isReadOnly()) return CodeMirror.Pass
+    var ranges = cm.listSelections(), linesToMove = [], at = cm.lastLine() + 1;
+    for (var i = ranges.length - 1; i >= 0; i--) {
+      var range = ranges[i], from = range.to().line + 1, to = range.from().line;
+      if (range.to().ch == 0 && !range.empty()) from--;
+      if (from < at) linesToMove.push(from, to);
+      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
+      at = to;
+    }
+    cm.operation(function() {
+      for (var i = linesToMove.length - 2; i >= 0; i -= 2) {
+        var from = linesToMove[i], to = linesToMove[i + 1];
+        var line = cm.getLine(from);
+        if (from == cm.lastLine())
+          cm.replaceRange("", Pos(from - 1), Pos(from), "+swapLine");
+        else
+          cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
+        cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
+      }
+      cm.scrollIntoView();
+    });
+  };
+
+  cmds.toggleCommentIndented = function(cm) {
+    cm.toggleComment({ indent: true });
+  }
+
+  cmds.joinLines = function(cm) {
+    var ranges = cm.listSelections(), joined = [];
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i], from = range.from();
+      var start = from.line, end = range.to().line;
+      while (i < ranges.length - 1 && ranges[i + 1].from().line == end)
+        end = ranges[++i].to().line;
+      joined.push({start: start, end: end, anchor: !range.empty() && from});
+    }
+    cm.operation(function() {
+      var offset = 0, ranges = [];
+      for (var i = 0; i < joined.length; i++) {
+        var obj = joined[i];
+        var anchor = obj.anchor && Pos(obj.anchor.line - offset, obj.anchor.ch), head;
+        for (var line = obj.start; line <= obj.end; line++) {
+          var actual = line - offset;
+          if (line == obj.end) head = Pos(actual, cm.getLine(actual).length + 1);
+          if (actual < cm.lastLine()) {
+            cm.replaceRange(" ", Pos(actual), Pos(actual + 1, /^\s*/.exec(cm.getLine(actual + 1))[0].length));
+            ++offset;
+          }
+        }
+        ranges.push({anchor: anchor || head, head: head});
+      }
+      cm.setSelections(ranges, 0);
+    });
+  };
+
+  cmds.duplicateLine = function(cm) {
+    cm.operation(function() {
+      var rangeCount = cm.listSelections().length;
+      for (var i = 0; i < rangeCount; i++) {
+        var range = cm.listSelections()[i];
+        if (range.empty())
+          cm.replaceRange(cm.getLine(range.head.line) + "\n", Pos(range.head.line, 0));
+        else
+          cm.replaceRange(cm.getRange(range.from(), range.to()), range.from());
+      }
+      cm.scrollIntoView();
+    });
+  };
+
+
+  function sortLines(cm, caseSensitive) {
+    if (cm.isReadOnly()) return CodeMirror.Pass
+    var ranges = cm.listSelections(), toSort = [], selected;
+    for (var i = 0; i < ranges.length; i++) {
+      var range = ranges[i];
+      if (range.empty()) continue;
+      var from = range.from().line, to = range.to().line;
+      while (i < ranges.length - 1 && ranges[i + 1].from().line == to)
+        to = ranges[++i].to().line;
+      if (!ranges[i].to().ch) to--;
+      toSort.push(from, to);
+    }
+    if (toSort.length) selected = true;
+    else toSort.push(cm.firstLine(), cm.lastLine());
+
+    cm.operation(function() {
+      var ranges = [];
+      for (var i = 0; i < toSort.length; i += 2) {
+        var from = toSort[i], to = toSort[i + 1];
+        var start = Pos(from, 0), end = Pos(to);
+        var lines = cm.getRange(start, end, false);
+        if (caseSensitive)
+          lines.sort();
+        else
+          lines.sort(function(a, b) {
+            var au = a.toUpperCase(), bu = b.toUpperCase();
+            if (au != bu) { a = au; b = bu; }
+            return a < b ? -1 : a == b ? 0 : 1;
+          });
+        cm.replaceRange(lines, start, end);
+        if (selected) ranges.push({anchor: start, head: Pos(to + 1, 0)});
+      }
+      if (selected) cm.setSelections(ranges, 0);
+    });
+  }
+
+  cmds.sortLines = function(cm) { sortLines(cm, true); };
+  cmds.sortLinesInsensitive = function(cm) { sortLines(cm, false); };
+
+  cmds.nextBookmark = function(cm) {
+    var marks = cm.state.sublimeBookmarks;
+    if (marks) while (marks.length) {
+      var current = marks.shift();
+      var found = current.find();
+      if (found) {
+        marks.push(current);
+        return cm.setSelection(found.from, found.to);
+      }
+    }
+  };
+
+  cmds.prevBookmark = function(cm) {
+    var marks = cm.state.sublimeBookmarks;
+    if (marks) while (marks.length) {
+      marks.unshift(marks.pop());
+      var found = marks[marks.length - 1].find();
+      if (!found)
+        marks.pop();
+      else
+        return cm.setSelection(found.from, found.to);
+    }
+  };
+
+  cmds.toggleBookmark = function(cm) {
+    var ranges = cm.listSelections();
+    var marks = cm.state.sublimeBookmarks || (cm.state.sublimeBookmarks = []);
+    for (var i = 0; i < ranges.length; i++) {
+      var from = ranges[i].from(), to = ranges[i].to();
+      var found = ranges[i].empty() ? cm.findMarksAt(from) : cm.findMarks(from, to);
+      for (var j = 0; j < found.length; j++) {
+        if (found[j].sublimeBookmark) {
+          found[j].clear();
+          for (var k = 0; k < marks.length; k++)
+            if (marks[k] == found[j])
+              marks.splice(k--, 1);
+          break;
+        }
+      }
+      if (j == found.length)
+        marks.push(cm.markText(from, to, {sublimeBookmark: true, clearWhenEmpty: false}));
+    }
+  };
+
+  cmds.clearBookmarks = function(cm) {
+    var marks = cm.state.sublimeBookmarks;
+    if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
+    marks.length = 0;
+  };
+
+  cmds.selectBookmarks = function(cm) {
+    var marks = cm.state.sublimeBookmarks, ranges = [];
+    if (marks) for (var i = 0; i < marks.length; i++) {
+      var found = marks[i].find();
+      if (!found)
+        marks.splice(i--, 0);
+      else
+        ranges.push({anchor: found.from, head: found.to});
+    }
+    if (ranges.length)
+      cm.setSelections(ranges, 0);
+  };
+
+  function modifyWordOrSelection(cm, mod) {
+    cm.operation(function() {
+      var ranges = cm.listSelections(), indices = [], replacements = [];
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        if (range.empty()) { indices.push(i); replacements.push(""); }
+        else replacements.push(mod(cm.getRange(range.from(), range.to())));
+      }
+      cm.replaceSelections(replacements, "around", "case");
+      for (var i = indices.length - 1, at; i >= 0; i--) {
+        var range = ranges[indices[i]];
+        if (at && CodeMirror.cmpPos(range.head, at) > 0) continue;
+        var word = wordAt(cm, range.head);
+        at = word.from;
+        cm.replaceRange(mod(word.word), word.from, word.to);
+      }
+    });
+  }
+
+  cmds.smartBackspace = function(cm) {
+    if (cm.somethingSelected()) return CodeMirror.Pass;
+
+    cm.operation(function() {
+      var cursors = cm.listSelections();
+      var indentUnit = cm.getOption("indentUnit");
+
+      for (var i = cursors.length - 1; i >= 0; i--) {
+        var cursor = cursors[i].head;
+        var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);
+        var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption("tabSize"));
+
+        // Delete by one character by default
+        var deletePos = cm.findPosH(cursor, -1, "char", false);
+
+        if (toStartOfLine && !/\S/.test(toStartOfLine) && column % indentUnit == 0) {
+          var prevIndent = new Pos(cursor.line,
+            CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));
+
+          // Smart delete only if we found a valid prevIndent location
+          if (prevIndent.ch != cursor.ch) deletePos = prevIndent;
+        }
+
+        cm.replaceRange("", deletePos, cursor, "+delete");
+      }
+    });
+  };
+
+  cmds.delLineRight = function(cm) {
+    cm.operation(function() {
+      var ranges = cm.listSelections();
+      for (var i = ranges.length - 1; i >= 0; i--)
+        cm.replaceRange("", ranges[i].anchor, Pos(ranges[i].to().line), "+delete");
+      cm.scrollIntoView();
+    });
+  };
+
+  cmds.upcaseAtCursor = function(cm) {
+    modifyWordOrSelection(cm, function(str) { return str.toUpperCase(); });
+  };
+  cmds.downcaseAtCursor = function(cm) {
+    modifyWordOrSelection(cm, function(str) { return str.toLowerCase(); });
+  };
+
+  cmds.setSublimeMark = function(cm) {
+    if (cm.state.sublimeMark) cm.state.sublimeMark.clear();
+    cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
+  };
+  cmds.selectToSublimeMark = function(cm) {
+    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+    if (found) cm.setSelection(cm.getCursor(), found);
+  };
+  cmds.deleteToSublimeMark = function(cm) {
+    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+    if (found) {
+      var from = cm.getCursor(), to = found;
+      if (CodeMirror.cmpPos(from, to) > 0) { var tmp = to; to = from; from = tmp; }
+      cm.state.sublimeKilled = cm.getRange(from, to);
+      cm.replaceRange("", from, to);
+    }
+  };
+  cmds.swapWithSublimeMark = function(cm) {
+    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
+    if (found) {
+      cm.state.sublimeMark.clear();
+      cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
+      cm.setCursor(found);
+    }
+  };
+  cmds.sublimeYank = function(cm) {
+    if (cm.state.sublimeKilled != null)
+      cm.replaceSelection(cm.state.sublimeKilled, null, "paste");
+  };
+
+  cmds.showInCenter = function(cm) {
+    var pos = cm.cursorCoords(null, "local");
+    cm.scrollTo(null, (pos.top + pos.bottom) / 2 - cm.getScrollInfo().clientHeight / 2);
+  };
+
+  function getTarget(cm) {
+    var from = cm.getCursor("from"), to = cm.getCursor("to");
+    if (CodeMirror.cmpPos(from, to) == 0) {
+      var word = wordAt(cm, from);
+      if (!word.word) return;
+      from = word.from;
+      to = word.to;
+    }
+    return {from: from, to: to, query: cm.getRange(from, to), word: word};
+  }
+
+  function findAndGoTo(cm, forward) {
+    var target = getTarget(cm);
+    if (!target) return;
+    var query = target.query;
+    var cur = cm.getSearchCursor(query, forward ? target.to : target.from);
+
+    if (forward ? cur.findNext() : cur.findPrevious()) {
+      cm.setSelection(cur.from(), cur.to());
+    } else {
+      cur = cm.getSearchCursor(query, forward ? Pos(cm.firstLine(), 0)
+                                              : cm.clipPos(Pos(cm.lastLine())));
+      if (forward ? cur.findNext() : cur.findPrevious())
+        cm.setSelection(cur.from(), cur.to());
+      else if (target.word)
+        cm.setSelection(target.from, target.to);
+    }
+  };
+  cmds.findUnder = function(cm) { findAndGoTo(cm, true); };
+  cmds.findUnderPrevious = function(cm) { findAndGoTo(cm,false); };
+  cmds.findAllUnder = function(cm) {
+    var target = getTarget(cm);
+    if (!target) return;
+    var cur = cm.getSearchCursor(target.query);
+    var matches = [];
+    var primaryIndex = -1;
+    while (cur.findNext()) {
+      matches.push({anchor: cur.from(), head: cur.to()});
+      if (cur.from().line <= target.from.line && cur.from().ch <= target.from.ch)
+        primaryIndex++;
+    }
+    cm.setSelections(matches, primaryIndex);
+  };
+
+
+  var keyMap = CodeMirror.keyMap;
+  keyMap.macSublime = {
+    "Cmd-Left": "goLineStartSmart",
+    "Shift-Tab": "indentLess",
+    "Shift-Ctrl-K": "deleteLine",
+    "Alt-Q": "wrapLines",
+    "Ctrl-Left": "goSubwordLeft",
+    "Ctrl-Right": "goSubwordRight",
+    "Ctrl-Alt-Up": "scrollLineUp",
+    "Ctrl-Alt-Down": "scrollLineDown",
+    "Cmd-L": "selectLine",
+    "Shift-Cmd-L": "splitSelectionByLine",
+    "Esc": "singleSelectionTop",
+    "Cmd-Enter": "insertLineAfter",
+    "Shift-Cmd-Enter": "insertLineBefore",
+    "Cmd-D": "selectNextOccurrence",
+    "Shift-Cmd-Space": "selectScope",
+    "Shift-Cmd-M": "selectBetweenBrackets",
+    "Cmd-M": "goToBracket",
+    "Cmd-Ctrl-Up": "swapLineUp",
+    "Cmd-Ctrl-Down": "swapLineDown",
+    "Cmd-/": "toggleCommentIndented",
+    "Cmd-J": "joinLines",
+    "Shift-Cmd-D": "duplicateLine",
+    "F5": "sortLines",
+    "Cmd-F5": "sortLinesInsensitive",
+    "F2": "nextBookmark",
+    "Shift-F2": "prevBookmark",
+    "Cmd-F2": "toggleBookmark",
+    "Shift-Cmd-F2": "clearBookmarks",
+    "Alt-F2": "selectBookmarks",
+    "Backspace": "smartBackspace",
+    "Cmd-K Cmd-D": "skipAndSelectNextOccurrence",
+    "Cmd-K Cmd-K": "delLineRight",
+    "Cmd-K Cmd-U": "upcaseAtCursor",
+    "Cmd-K Cmd-L": "downcaseAtCursor",
+    "Cmd-K Cmd-Space": "setSublimeMark",
+    "Cmd-K Cmd-A": "selectToSublimeMark",
+    "Cmd-K Cmd-W": "deleteToSublimeMark",
+    "Cmd-K Cmd-X": "swapWithSublimeMark",
+    "Cmd-K Cmd-Y": "sublimeYank",
+    "Cmd-K Cmd-C": "showInCenter",
+    "Cmd-K Cmd-G": "clearBookmarks",
+    "Cmd-K Cmd-Backspace": "delLineLeft",
+    "Cmd-K Cmd-1": "foldAll",
+    "Cmd-K Cmd-0": "unfoldAll",
+    "Cmd-K Cmd-J": "unfoldAll",
+    "Ctrl-Shift-Up": "addCursorToPrevLine",
+    "Ctrl-Shift-Down": "addCursorToNextLine",
+    "Cmd-F3": "findUnder",
+    "Shift-Cmd-F3": "findUnderPrevious",
+    "Alt-F3": "findAllUnder",
+    "Shift-Cmd-[": "fold",
+    "Shift-Cmd-]": "unfold",
+    "Cmd-I": "findIncremental",
+    "Shift-Cmd-I": "findIncrementalReverse",
+    "Cmd-H": "replace",
+    "F3": "findNext",
+    "Shift-F3": "findPrev",
+    "fallthrough": "macDefault"
+  };
+  CodeMirror.normalizeKeyMap(keyMap.macSublime);
+
+  keyMap.pcSublime = {
+    "Shift-Tab": "indentLess",
+    "Shift-Ctrl-K": "deleteLine",
+    "Alt-Q": "wrapLines",
+    "Ctrl-T": "transposeChars",
+    "Alt-Left": "goSubwordLeft",
+    "Alt-Right": "goSubwordRight",
+    "Ctrl-Up": "scrollLineUp",
+    "Ctrl-Down": "scrollLineDown",
+    "Ctrl-L": "selectLine",
+    "Shift-Ctrl-L": "splitSelectionByLine",
+    "Esc": "singleSelectionTop",
+    "Ctrl-Enter": "insertLineAfter",
+    "Shift-Ctrl-Enter": "insertLineBefore",
+    "Ctrl-D": "selectNextOccurrence",
+    "Shift-Ctrl-Space": "selectScope",
+    "Shift-Ctrl-M": "selectBetweenBrackets",
+    "Ctrl-M": "goToBracket",
+    "Shift-Ctrl-Up": "swapLineUp",
+    "Shift-Ctrl-Down": "swapLineDown",
+    "Ctrl-/": "toggleCommentIndented",
+    "Ctrl-J": "joinLines",
+    "Shift-Ctrl-D": "duplicateLine",
+    "F9": "sortLines",
+    "Ctrl-F9": "sortLinesInsensitive",
+    "F2": "nextBookmark",
+    "Shift-F2": "prevBookmark",
+    "Ctrl-F2": "toggleBookmark",
+    "Shift-Ctrl-F2": "clearBookmarks",
+    "Alt-F2": "selectBookmarks",
+    "Backspace": "smartBackspace",
+    "Ctrl-K Ctrl-D": "skipAndSelectNextOccurrence",
+    "Ctrl-K Ctrl-K": "delLineRight",
+    "Ctrl-K Ctrl-U": "upcaseAtCursor",
+    "Ctrl-K Ctrl-L": "downcaseAtCursor",
+    "Ctrl-K Ctrl-Space": "setSublimeMark",
+    "Ctrl-K Ctrl-A": "selectToSublimeMark",
+    "Ctrl-K Ctrl-W": "deleteToSublimeMark",
+    "Ctrl-K Ctrl-X": "swapWithSublimeMark",
+    "Ctrl-K Ctrl-Y": "sublimeYank",
+    "Ctrl-K Ctrl-C": "showInCenter",
+    "Ctrl-K Ctrl-G": "clearBookmarks",
+    "Ctrl-K Ctrl-Backspace": "delLineLeft",
+    "Ctrl-K Ctrl-1": "foldAll",
+    "Ctrl-K Ctrl-0": "unfoldAll",
+    "Ctrl-K Ctrl-J": "unfoldAll",
+    "Ctrl-Alt-Up": "addCursorToPrevLine",
+    "Ctrl-Alt-Down": "addCursorToNextLine",
+    "Ctrl-F3": "findUnder",
+    "Shift-Ctrl-F3": "findUnderPrevious",
+    "Alt-F3": "findAllUnder",
+    "Shift-Ctrl-[": "fold",
+    "Shift-Ctrl-]": "unfold",
+    "Ctrl-I": "findIncremental",
+    "Shift-Ctrl-I": "findIncrementalReverse",
+    "Ctrl-H": "replace",
+    "F3": "findNext",
+    "Shift-F3": "findPrev",
+    "fallthrough": "pcDefault"
+  };
+  CodeMirror.normalizeKeyMap(keyMap.pcSublime);
+
+  var mac = keyMap.default == keyMap.macDefault;
+  keyMap.sublime = mac ? keyMap.macSublime : keyMap.pcSublime;
+});
diff --git a/vim.js b/vim.js
new file mode 100644
index 0000000..b5be59c
--- /dev/null
+++ b/vim.js
@@ -0,0 +1,5545 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+/**
+ * Supported keybindings:
+ *   Too many to list. Refer to defaultKeymap below.
+ *
+ * Supported Ex commands:
+ *   Refer to defaultExCommandMap below.
+ *
+ * Registers: unnamed, -, a-z, A-Z, 0-9
+ *   (Does not respect the special case for number registers when delete
+ *    operator is made with these commands: %, (, ),  , /, ?, n, N, {, } )
+ *   TODO: Implement the remaining registers.
+ *
+ * Marks: a-z, A-Z, and 0-9
+ *   TODO: Implement the remaining special marks. They have more complex
+ *       behavior.
+ *
+ * Events:
+ *  'vim-mode-change' - raised on the editor anytime the current mode changes,
+ *                      Event object: {mode: "visual", subMode: "linewise"}
+ *
+ * Code structure:
+ *  1. Default keymap
+ *  2. Variable declarations and short basic helpers
+ *  3. Instance (External API) implementation
+ *  4. Internal state tracking objects (input state, counter) implementation
+ *     and instantiation
+ *  5. Key handler (the main command dispatcher) implementation
+ *  6. Motion, operator, and action implementations
+ *  7. Helper functions for the key handler, motions, operators, and actions
+ *  8. Set up Vim to work as a keymap for CodeMirror.
+ *  9. Ex command implementations.
+ */
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/dialog/dialog"), require("../addon/edit/matchbrackets.js"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/dialog/dialog", "../addon/edit/matchbrackets"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  'use strict';
+
+  var defaultKeymap = [
+    // Key to key mapping. This goes first to make it possible to override
+    // existing mappings.
+    { keys: '<Left>', type: 'keyToKey', toKeys: 'h' },
+    { keys: '<Right>', type: 'keyToKey', toKeys: 'l' },
+    { keys: '<Up>', type: 'keyToKey', toKeys: 'k' },
+    { keys: '<Down>', type: 'keyToKey', toKeys: 'j' },
+    { keys: '<Space>', type: 'keyToKey', toKeys: 'l' },
+    { keys: '<BS>', type: 'keyToKey', toKeys: 'h', context: 'normal'},
+    { keys: '<Del>', type: 'keyToKey', toKeys: 'x', context: 'normal'},
+    { keys: '<C-Space>', type: 'keyToKey', toKeys: 'W' },
+    { keys: '<C-BS>', type: 'keyToKey', toKeys: 'B', context: 'normal' },
+    { keys: '<S-Space>', type: 'keyToKey', toKeys: 'w' },
+    { keys: '<S-BS>', type: 'keyToKey', toKeys: 'b', context: 'normal' },
+    { keys: '<C-n>', type: 'keyToKey', toKeys: 'j' },
+    { keys: '<C-p>', type: 'keyToKey', toKeys: 'k' },
+    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>' },
+    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>' },
+    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
+    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
+    { keys: 's', type: 'keyToKey', toKeys: 'cl', context: 'normal' },
+    { keys: 's', type: 'keyToKey', toKeys: 'c', context: 'visual'},
+    { keys: 'S', type: 'keyToKey', toKeys: 'cc', context: 'normal' },
+    { keys: 'S', type: 'keyToKey', toKeys: 'VdO', context: 'visual' },
+    { keys: '<Home>', type: 'keyToKey', toKeys: '0' },
+    { keys: '<End>', type: 'keyToKey', toKeys: '$' },
+    { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
+    { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
+    { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
+    { keys: '<Ins>', type: 'action', action: 'toggleOverwrite', context: 'insert' },
+    // Motions
+    { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
+    { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
+    { keys: 'L', type: 'motion', motion: 'moveToBottomLine', motionArgs: { linewise: true, toJumplist: true }},
+    { keys: 'h', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: false }},
+    { keys: 'l', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: true }},
+    { keys: 'j', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, linewise: true }},
+    { keys: 'k', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, linewise: true }},
+    { keys: 'gj', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: true }},
+    { keys: 'gk', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: false }},
+    { keys: 'w', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false }},
+    { keys: 'W', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false, bigWord: true }},
+    { keys: 'e', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, inclusive: true }},
+    { keys: 'E', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, bigWord: true, inclusive: true }},
+    { keys: 'b', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }},
+    { keys: 'B', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false, bigWord: true }},
+    { keys: 'ge', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, inclusive: true }},
+    { keys: 'gE', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, bigWord: true, inclusive: true }},
+    { keys: '{', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: false, toJumplist: true }},
+    { keys: '}', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: true, toJumplist: true }},
+    { keys: '(', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: false }},
+    { keys: ')', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: true }},
+    { keys: '<C-f>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: true }},
+    { keys: '<C-b>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: false }},
+    { keys: '<C-d>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: true, explicitRepeat: true }},
+    { keys: '<C-u>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: false, explicitRepeat: true }},
+    { keys: 'gg', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
+    { keys: 'G', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
+    { keys: '0', type: 'motion', motion: 'moveToStartOfLine' },
+    { keys: '^', type: 'motion', motion: 'moveToFirstNonWhiteSpaceCharacter' },
+    { keys: '+', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true }},
+    { keys: '-', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, toFirstChar:true }},
+    { keys: '_', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
+    { keys: '$', type: 'motion', motion: 'moveToEol', motionArgs: { inclusive: true }},
+    { keys: '%', type: 'motion', motion: 'moveToMatchedSymbol', motionArgs: { inclusive: true, toJumplist: true }},
+    { keys: 'f<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: true , inclusive: true }},
+    { keys: 'F<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: false }},
+    { keys: 't<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: true, inclusive: true }},
+    { keys: 'T<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: false }},
+    { keys: ';', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: true }},
+    { keys: ',', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: false }},
+    { keys: '\'<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true, linewise: true}},
+    { keys: '`<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true}},
+    { keys: ']`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
+    { keys: '[`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
+    { keys: ']\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
+    { keys: '[\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
+    // the next two aren't motions but must come before more general motion declarations
+    { keys: ']p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true, matchIndent: true}},
+    { keys: '[p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true, matchIndent: true}},
+    { keys: ']<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: true, toJumplist: true}},
+    { keys: '[<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: false, toJumplist: true}},
+    { keys: '|', type: 'motion', motion: 'moveToColumn'},
+    { keys: 'o', type: 'motion', motion: 'moveToOtherHighlightedEnd', context:'visual'},
+    { keys: 'O', type: 'motion', motion: 'moveToOtherHighlightedEnd', motionArgs: {sameLine: true}, context:'visual'},
+    // Operators
+    { keys: 'd', type: 'operator', operator: 'delete' },
+    { keys: 'y', type: 'operator', operator: 'yank' },
+    { keys: 'c', type: 'operator', operator: 'change' },
+    { keys: '=', type: 'operator', operator: 'indentAuto' },
+    { keys: '>', type: 'operator', operator: 'indent', operatorArgs: { indentRight: true }},
+    { keys: '<', type: 'operator', operator: 'indent', operatorArgs: { indentRight: false }},
+    { keys: 'g~', type: 'operator', operator: 'changeCase' },
+    { keys: 'gu', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, isEdit: true },
+    { keys: 'gU', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, isEdit: true },
+    { keys: 'n', type: 'motion', motion: 'findNext', motionArgs: { forward: true, toJumplist: true }},
+    { keys: 'N', type: 'motion', motion: 'findNext', motionArgs: { forward: false, toJumplist: true }},
+    // Operator-Motion dual commands
+    { keys: 'x', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorMotionArgs: { visualLine: false }},
+    { keys: 'X', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: false }, operatorMotionArgs: { visualLine: true }},
+    { keys: 'D', type: 'operatorMotion', operator: 'delete', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
+    { keys: 'D', type: 'operator', operator: 'delete', operatorArgs: { linewise: true }, context: 'visual'},
+    { keys: 'Y', type: 'operatorMotion', operator: 'yank', motion: 'expandToLine', motionArgs: { linewise: true }, context: 'normal'},
+    { keys: 'Y', type: 'operator', operator: 'yank', operatorArgs: { linewise: true }, context: 'visual'},
+    { keys: 'C', type: 'operatorMotion', operator: 'change', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
+    { keys: 'C', type: 'operator', operator: 'change', operatorArgs: { linewise: true }, context: 'visual'},
+    { keys: '~', type: 'operatorMotion', operator: 'changeCase', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorArgs: { shouldMoveCursor: true }, context: 'normal'},
+    { keys: '~', type: 'operator', operator: 'changeCase', context: 'visual'},
+    { keys: '<C-w>', type: 'operatorMotion', operator: 'delete', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }, context: 'insert' },
+    //ignore C-w in normal mode
+    { keys: '<C-w>', type: 'idle', context: 'normal' },
+    // Actions
+    { keys: '<C-i>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: true }},
+    { keys: '<C-o>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: false }},
+    { keys: '<C-e>', type: 'action', action: 'scroll', actionArgs: { forward: true, linewise: true }},
+    { keys: '<C-y>', type: 'action', action: 'scroll', actionArgs: { forward: false, linewise: true }},
+    { keys: 'a', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'charAfter' }, context: 'normal' },
+    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
+    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
+    { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
+    { keys: 'gi', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'lastEdit' }, context: 'normal' },
+    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
+    { keys: 'gI', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'bol'}, context: 'normal' },
+    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
+    { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
+    { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
+    { keys: 'v', type: 'action', action: 'toggleVisualMode' },
+    { keys: 'V', type: 'action', action: 'toggleVisualMode', actionArgs: { linewise: true }},
+    { keys: '<C-v>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
+    { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
+    { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
+    { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
+    { keys: 'gJ', type: 'action', action: 'joinLines', actionArgs: { keepSpaces: true }, isEdit: true },
+    { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
+    { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
+    { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
+    { keys: '@<character>', type: 'action', action: 'replayMacro' },
+    { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
+    // Handle Replace-mode as a special case of insert mode.
+    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }, context: 'normal'},
+    { keys: 'R', type: 'operator', operator: 'change', operatorArgs: { linewise: true, fullLine: true }, context: 'visual', exitVisualBlock: true},
+    { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
+    { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
+    { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
+    { keys: '<C-r>', type: 'action', action: 'redo' },
+    { keys: 'm<character>', type: 'action', action: 'setMark' },
+    { keys: '"<character>', type: 'action', action: 'setRegister' },
+    { keys: 'zz', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }},
+    { keys: 'z.', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+    { keys: 'zt', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }},
+    { keys: 'z<CR>', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+    { keys: 'z-', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }},
+    { keys: 'zb', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
+    { keys: '.', type: 'action', action: 'repeatLastEdit' },
+    { keys: '<C-a>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: true, backtrack: false}},
+    { keys: '<C-x>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: false, backtrack: false}},
+    { keys: '<C-t>', type: 'action', action: 'indent', actionArgs: { indentRight: true }, context: 'insert' },
+    { keys: '<C-d>', type: 'action', action: 'indent', actionArgs: { indentRight: false }, context: 'insert' },
+    // Text object motions
+    { keys: 'a<character>', type: 'motion', motion: 'textObjectManipulation' },
+    { keys: 'i<character>', type: 'motion', motion: 'textObjectManipulation', motionArgs: { textObjectInner: true }},
+    // Search
+    { keys: '/', type: 'search', searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
+    { keys: '?', type: 'search', searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
+    { keys: '*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
+    { keys: '#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
+    { keys: 'g*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
+    { keys: 'g#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
+    // Ex command
+    { keys: ':', type: 'ex' }
+  ];
+  var defaultKeymapLength = defaultKeymap.length;
+
+  /**
+   * Ex commands
+   * Care must be taken when adding to the default Ex command map. For any
+   * pair of commands that have a shared prefix, at least one of their
+   * shortNames must not match the prefix of the other command.
+   */
+  var defaultExCommandMap = [
+    { name: 'colorscheme', shortName: 'colo' },
+    { name: 'map' },
+    { name: 'imap', shortName: 'im' },
+    { name: 'nmap', shortName: 'nm' },
+    { name: 'vmap', shortName: 'vm' },
+    { name: 'unmap' },
+    { name: 'write', shortName: 'w' },
+    { name: 'undo', shortName: 'u' },
+    { name: 'redo', shortName: 'red' },
+    { name: 'set', shortName: 'se' },
+    { name: 'setlocal', shortName: 'setl' },
+    { name: 'setglobal', shortName: 'setg' },
+    { name: 'sort', shortName: 'sor' },
+    { name: 'substitute', shortName: 's', possiblyAsync: true },
+    { name: 'nohlsearch', shortName: 'noh' },
+    { name: 'yank', shortName: 'y' },
+    { name: 'delmarks', shortName: 'delm' },
+    { name: 'registers', shortName: 'reg', excludeFromCommandHistory: true },
+    { name: 'global', shortName: 'g' }
+  ];
+
+  var Pos = CodeMirror.Pos;
+
+  var Vim = function() {
+    function enterVimMode(cm) {
+      cm.setOption('disableInput', true);
+      cm.setOption('showCursorWhenSelecting', false);
+      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+      cm.on('cursorActivity', onCursorActivity);
+      maybeInitVimState(cm);
+      CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
+    }
+
+    function leaveVimMode(cm) {
+      cm.setOption('disableInput', false);
+      cm.off('cursorActivity', onCursorActivity);
+      CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
+      cm.state.vim = null;
+    }
+
+    function detachVimMap(cm, next) {
+      if (this == CodeMirror.keyMap.vim) {
+        CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");
+        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
+          disableFatCursorMark(cm);
+          cm.getInputField().style.caretColor = "";
+        }
+      }
+
+      if (!next || next.attach != attachVimMap)
+        leaveVimMode(cm);
+    }
+    function attachVimMap(cm, prev) {
+      if (this == CodeMirror.keyMap.vim) {
+        CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");
+        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
+          enableFatCursorMark(cm);
+          cm.getInputField().style.caretColor = "transparent";
+        }
+      }
+
+      if (!prev || prev.attach != attachVimMap)
+        enterVimMode(cm);
+    }
+
+    function updateFatCursorMark(cm) {
+      if (!cm.state.fatCursorMarks) return;
+      clearFatCursorMark(cm);
+      var ranges = cm.listSelections(), result = []
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        if (range.empty()) {
+          var lineLength = cm.getLine(range.anchor.line).length;
+          if (range.anchor.ch < lineLength) {
+            result.push(cm.markText(range.anchor, Pos(range.anchor.line, range.anchor.ch + 1),
+                                    {className: "cm-fat-cursor-mark"}));
+          } else {
+            result.push(cm.markText(Pos(range.anchor.line, lineLength - 1),
+                                    Pos(range.anchor.line, lineLength),
+                                    {className: "cm-fat-cursor-mark"}));
+          }
+        }
+      }
+      cm.state.fatCursorMarks = result;
+    }
+
+    function clearFatCursorMark(cm) {
+      var marks = cm.state.fatCursorMarks;
+      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
+    }
+
+    function enableFatCursorMark(cm) {
+      cm.state.fatCursorMarks = [];
+      updateFatCursorMark(cm)
+      cm.on("cursorActivity", updateFatCursorMark)
+    }
+
+    function disableFatCursorMark(cm) {
+      clearFatCursorMark(cm);
+      cm.off("cursorActivity", updateFatCursorMark);
+      // explicitly set fatCursorMarks to null because event listener above
+      // can be invoke after removing it, if off is called from operation
+      cm.state.fatCursorMarks = null;
+    }
+
+    // Deprecated, simply setting the keymap works again.
+    CodeMirror.defineOption('vimMode', false, function(cm, val, prev) {
+      if (val && cm.getOption("keyMap") != "vim")
+        cm.setOption("keyMap", "vim");
+      else if (!val && prev != CodeMirror.Init && /^vim/.test(cm.getOption("keyMap")))
+        cm.setOption("keyMap", "default");
+    });
+
+    function cmKey(key, cm) {
+      if (!cm) { return undefined; }
+      if (this[key]) { return this[key]; }
+      var vimKey = cmKeyToVimKey(key);
+      if (!vimKey) {
+        return false;
+      }
+      var cmd = CodeMirror.Vim.findKey(cm, vimKey);
+      if (typeof cmd == 'function') {
+        CodeMirror.signal(cm, 'vim-keypress', vimKey);
+      }
+      return cmd;
+    }
+
+    var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
+    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del',Insert:'Ins'};
+    function cmKeyToVimKey(key) {
+      if (key.charAt(0) == '\'') {
+        // Keypress character binding of format "'a'"
+        return key.charAt(1);
+      }
+      var pieces = key.split(/-(?!$)/);
+      var lastPiece = pieces[pieces.length - 1];
+      if (pieces.length == 1 && pieces[0].length == 1) {
+        // No-modifier bindings use literal character bindings above. Skip.
+        return false;
+      } else if (pieces.length == 2 && pieces[0] == 'Shift' && lastPiece.length == 1) {
+        // Ignore Shift+char bindings as they should be handled by literal character.
+        return false;
+      }
+      var hasCharacter = false;
+      for (var i = 0; i < pieces.length; i++) {
+        var piece = pieces[i];
+        if (piece in modifiers) { pieces[i] = modifiers[piece]; }
+        else { hasCharacter = true; }
+        if (piece in specialKeys) { pieces[i] = specialKeys[piece]; }
+      }
+      if (!hasCharacter) {
+        // Vim does not support modifier only keys.
+        return false;
+      }
+      // TODO: Current bindings expect the character to be lower case, but
+      // it looks like vim key notation uses upper case.
+      if (isUpperCase(lastPiece)) {
+        pieces[pieces.length - 1] = lastPiece.toLowerCase();
+      }
+      return '<' + pieces.join('-') + '>';
+    }
+
+    function getOnPasteFn(cm) {
+      var vim = cm.state.vim;
+      if (!vim.onPasteFn) {
+        vim.onPasteFn = function() {
+          if (!vim.insertMode) {
+            cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
+            actions.enterInsertMode(cm, {}, vim);
+          }
+        };
+      }
+      return vim.onPasteFn;
+    }
+
+    var numberRegex = /[\d]/;
+    var wordCharTest = [CodeMirror.isWordChar, function(ch) {
+      return ch && !CodeMirror.isWordChar(ch) && !/\s/.test(ch);
+    }], bigWordCharTest = [function(ch) {
+      return /\S/.test(ch);
+    }];
+    function makeKeyRange(start, size) {
+      var keys = [];
+      for (var i = start; i < start + size; i++) {
+        keys.push(String.fromCharCode(i));
+      }
+      return keys;
+    }
+    var upperCaseAlphabet = makeKeyRange(65, 26);
+    var lowerCaseAlphabet = makeKeyRange(97, 26);
+    var numbers = makeKeyRange(48, 10);
+    var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
+    var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"', '.', ':', '/']);
+
+    function isLine(cm, line) {
+      return line >= cm.firstLine() && line <= cm.lastLine();
+    }
+    function isLowerCase(k) {
+      return (/^[a-z]$/).test(k);
+    }
+    function isMatchableSymbol(k) {
+      return '()[]{}'.indexOf(k) != -1;
+    }
+    function isNumber(k) {
+      return numberRegex.test(k);
+    }
+    function isUpperCase(k) {
+      return (/^[A-Z]$/).test(k);
+    }
+    function isWhiteSpaceString(k) {
+      return (/^\s*$/).test(k);
+    }
+    function isEndOfSentenceSymbol(k) {
+      return '.?!'.indexOf(k) != -1;
+    }
+    function inArray(val, arr) {
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i] == val) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    var options = {};
+    function defineOption(name, defaultValue, type, aliases, callback) {
+      if (defaultValue === undefined && !callback) {
+        throw Error('defaultValue is required unless callback is provided');
+      }
+      if (!type) { type = 'string'; }
+      options[name] = {
+        type: type,
+        defaultValue: defaultValue,
+        callback: callback
+      };
+      if (aliases) {
+        for (var i = 0; i < aliases.length; i++) {
+          options[aliases[i]] = options[name];
+        }
+      }
+      if (defaultValue) {
+        setOption(name, defaultValue);
+      }
+    }
+
+    function setOption(name, value, cm, cfg) {
+      var option = options[name];
+      cfg = cfg || {};
+      var scope = cfg.scope;
+      if (!option) {
+        return new Error('Unknown option: ' + name);
+      }
+      if (option.type == 'boolean') {
+        if (value && value !== true) {
+          return new Error('Invalid argument: ' + name + '=' + value);
+        } else if (value !== false) {
+          // Boolean options are set to true if value is not defined.
+          value = true;
+        }
+      }
+      if (option.callback) {
+        if (scope !== 'local') {
+          option.callback(value, undefined);
+        }
+        if (scope !== 'global' && cm) {
+          option.callback(value, cm);
+        }
+      } else {
+        if (scope !== 'local') {
+          option.value = option.type == 'boolean' ? !!value : value;
+        }
+        if (scope !== 'global' && cm) {
+          cm.state.vim.options[name] = {value: value};
+        }
+      }
+    }
+
+    function getOption(name, cm, cfg) {
+      var option = options[name];
+      cfg = cfg || {};
+      var scope = cfg.scope;
+      if (!option) {
+        return new Error('Unknown option: ' + name);
+      }
+      if (option.callback) {
+        var local = cm && option.callback(undefined, cm);
+        if (scope !== 'global' && local !== undefined) {
+          return local;
+        }
+        if (scope !== 'local') {
+          return option.callback();
+        }
+        return;
+      } else {
+        var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
+        return (local || (scope !== 'local') && option || {}).value;
+      }
+    }
+
+    defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
+      // Option is local. Do nothing for global.
+      if (cm === undefined) {
+        return;
+      }
+      // The 'filetype' option proxies to the CodeMirror 'mode' option.
+      if (name === undefined) {
+        var mode = cm.getOption('mode');
+        return mode == 'null' ? '' : mode;
+      } else {
+        var mode = name == '' ? 'null' : name;
+        cm.setOption('mode', mode);
+      }
+    });
+
+    var createCircularJumpList = function() {
+      var size = 100;
+      var pointer = -1;
+      var head = 0;
+      var tail = 0;
+      var buffer = new Array(size);
+      function add(cm, oldCur, newCur) {
+        var current = pointer % size;
+        var curMark = buffer[current];
+        function useNextSlot(cursor) {
+          var next = ++pointer % size;
+          var trashMark = buffer[next];
+          if (trashMark) {
+            trashMark.clear();
+          }
+          buffer[next] = cm.setBookmark(cursor);
+        }
+        if (curMark) {
+          var markPos = curMark.find();
+          // avoid recording redundant cursor position
+          if (markPos && !cursorEqual(markPos, oldCur)) {
+            useNextSlot(oldCur);
+          }
+        } else {
+          useNextSlot(oldCur);
+        }
+        useNextSlot(newCur);
+        head = pointer;
+        tail = pointer - size + 1;
+        if (tail < 0) {
+          tail = 0;
+        }
+      }
+      function move(cm, offset) {
+        pointer += offset;
+        if (pointer > head) {
+          pointer = head;
+        } else if (pointer < tail) {
+          pointer = tail;
+        }
+        var mark = buffer[(size + pointer) % size];
+        // skip marks that are temporarily removed from text buffer
+        if (mark && !mark.find()) {
+          var inc = offset > 0 ? 1 : -1;
+          var newCur;
+          var oldCur = cm.getCursor();
+          do {
+            pointer += inc;
+            mark = buffer[(size + pointer) % size];
+            // skip marks that are the same as current position
+            if (mark &&
+                (newCur = mark.find()) &&
+                !cursorEqual(oldCur, newCur)) {
+              break;
+            }
+          } while (pointer < head && pointer > tail);
+        }
+        return mark;
+      }
+      function find(cm, offset) {
+        var oldPointer = pointer;
+        var mark = move(cm, offset);
+        pointer = oldPointer;
+        return mark && mark.find();
+      }
+      return {
+        cachedCursor: undefined, //used for # and * jumps
+        add: add,
+        find: find,
+        move: move
+      };
+    };
+
+    // Returns an object to track the changes associated insert mode.  It
+    // clones the object that is passed in, or creates an empty object one if
+    // none is provided.
+    var createInsertModeChanges = function(c) {
+      if (c) {
+        // Copy construction
+        return {
+          changes: c.changes,
+          expectCursorActivityForChange: c.expectCursorActivityForChange
+        };
+      }
+      return {
+        // Change list
+        changes: [],
+        // Set to true on change, false on cursorActivity.
+        expectCursorActivityForChange: false
+      };
+    };
+
+    function MacroModeState() {
+      this.latestRegister = undefined;
+      this.isPlaying = false;
+      this.isRecording = false;
+      this.replaySearchQueries = [];
+      this.onRecordingDone = undefined;
+      this.lastInsertModeChanges = createInsertModeChanges();
+    }
+    MacroModeState.prototype = {
+      exitMacroRecordMode: function() {
+        var macroModeState = vimGlobalState.macroModeState;
+        if (macroModeState.onRecordingDone) {
+          macroModeState.onRecordingDone(); // close dialog
+        }
+        macroModeState.onRecordingDone = undefined;
+        macroModeState.isRecording = false;
+      },
+      enterMacroRecordMode: function(cm, registerName) {
+        var register =
+            vimGlobalState.registerController.getRegister(registerName);
+        if (register) {
+          register.clear();
+          this.latestRegister = registerName;
+          if (cm.openDialog) {
+            this.onRecordingDone = cm.openDialog(
+                '(recording)['+registerName+']', null, {bottom:true});
+          }
+          this.isRecording = true;
+        }
+      }
+    };
+
+    function maybeInitVimState(cm) {
+      if (!cm.state.vim) {
+        // Store instance state in the CodeMirror object.
+        cm.state.vim = {
+          inputState: new InputState(),
+          // Vim's input state that triggered the last edit, used to repeat
+          // motions and operators with '.'.
+          lastEditInputState: undefined,
+          // Vim's action command before the last edit, used to repeat actions
+          // with '.' and insert mode repeat.
+          lastEditActionCommand: undefined,
+          // When using jk for navigation, if you move from a longer line to a
+          // shorter line, the cursor may clip to the end of the shorter line.
+          // If j is pressed again and cursor goes to the next line, the
+          // cursor should go back to its horizontal position on the longer
+          // line if it can. This is to keep track of the horizontal position.
+          lastHPos: -1,
+          // Doing the same with screen-position for gj/gk
+          lastHSPos: -1,
+          // The last motion command run. Cleared if a non-motion command gets
+          // executed in between.
+          lastMotion: null,
+          marks: {},
+          // Mark for rendering fake cursor for visual mode.
+          fakeCursor: null,
+          insertMode: false,
+          // Repeat count for changes made in insert mode, triggered by key
+          // sequences like 3,i. Only exists when insertMode is true.
+          insertModeRepeat: undefined,
+          visualMode: false,
+          // If we are in visual line mode. No effect if visualMode is false.
+          visualLine: false,
+          visualBlock: false,
+          lastSelection: null,
+          lastPastedText: null,
+          sel: {},
+          // Buffer-local/window-local values of vim options.
+          options: {}
+        };
+      }
+      return cm.state.vim;
+    }
+    var vimGlobalState;
+    function resetVimGlobalState() {
+      vimGlobalState = {
+        // The current search query.
+        searchQuery: null,
+        // Whether we are searching backwards.
+        searchIsReversed: false,
+        // Replace part of the last substituted pattern
+        lastSubstituteReplacePart: undefined,
+        jumpList: createCircularJumpList(),
+        macroModeState: new MacroModeState,
+        // Recording latest f, t, F or T motion command.
+        lastCharacterSearch: {increment:0, forward:true, selectedCharacter:''},
+        registerController: new RegisterController({}),
+        // search history buffer
+        searchHistoryController: new HistoryController(),
+        // ex Command history buffer
+        exCommandHistoryController : new HistoryController()
+      };
+      for (var optionName in options) {
+        var option = options[optionName];
+        option.value = option.defaultValue;
+      }
+    }
+
+    var lastInsertModeKeyTimer;
+    var vimApi= {
+      buildKeyMap: function() {
+        // TODO: Convert keymap into dictionary format for fast lookup.
+      },
+      // Testing hook, though it might be useful to expose the register
+      // controller anyways.
+      getRegisterController: function() {
+        return vimGlobalState.registerController;
+      },
+      // Testing hook.
+      resetVimGlobalState_: resetVimGlobalState,
+
+      // Testing hook.
+      getVimGlobalState_: function() {
+        return vimGlobalState;
+      },
+
+      // Testing hook.
+      maybeInitVimState_: maybeInitVimState,
+
+      suppressErrorLogging: false,
+
+      InsertModeKey: InsertModeKey,
+      map: function(lhs, rhs, ctx) {
+        // Add user defined key bindings.
+        exCommandDispatcher.map(lhs, rhs, ctx);
+      },
+      unmap: function(lhs, ctx) {
+        exCommandDispatcher.unmap(lhs, ctx);
+      },
+      // Non-recursive map function.
+      // NOTE: This will not create mappings to key maps that aren't present
+      // in the default key map. See TODO at bottom of function.
+      noremap: function(lhs, rhs, ctx) {
+        function toCtxArray(ctx) {
+          return ctx ? [ctx] : ['normal', 'insert', 'visual'];
+        }
+        var ctxsToMap = toCtxArray(ctx);
+        // Look through all actual defaults to find a map candidate.
+        var actualLength = defaultKeymap.length, origLength = defaultKeymapLength;
+        for (var i = actualLength - origLength;
+             i < actualLength && ctxsToMap.length;
+             i++) {
+          var mapping = defaultKeymap[i];
+          // Omit mappings that operate in the wrong context(s) and those of invalid type.
+          if (mapping.keys == rhs &&
+              (!ctx || !mapping.context || mapping.context === ctx) &&
+              mapping.type.substr(0, 2) !== 'ex' &&
+              mapping.type.substr(0, 3) !== 'key') {
+            // Make a shallow copy of the original keymap entry.
+            var newMapping = {};
+            for (var key in mapping) {
+              newMapping[key] = mapping[key];
+            }
+            // Modify it point to the new mapping with the proper context.
+            newMapping.keys = lhs;
+            if (ctx && !newMapping.context) {
+              newMapping.context = ctx;
+            }
+            // Add it to the keymap with a higher priority than the original.
+            this._mapCommand(newMapping);
+            // Record the mapped contexts as complete.
+            var mappedCtxs = toCtxArray(mapping.context);
+            ctxsToMap = ctxsToMap.filter(function(el) { return mappedCtxs.indexOf(el) === -1; });
+          }
+        }
+        // TODO: Create non-recursive keyToKey mappings for the unmapped contexts once those exist.
+      },
+      // Remove all user-defined mappings for the provided context.
+      mapclear: function(ctx) {
+        // Partition the existing keymap into user-defined and true defaults.
+        var actualLength = defaultKeymap.length,
+            origLength = defaultKeymapLength;
+        var userKeymap = defaultKeymap.slice(0, actualLength - origLength);
+        defaultKeymap = defaultKeymap.slice(actualLength - origLength);
+        if (ctx) {
+          // If a specific context is being cleared, we need to keep mappings
+          // from all other contexts.
+          for (var i = userKeymap.length - 1; i >= 0; i--) {
+            var mapping = userKeymap[i];
+            if (ctx !== mapping.context) {
+              if (mapping.context) {
+                this._mapCommand(mapping);
+              } else {
+                // `mapping` applies to all contexts so create keymap copies
+                // for each context except the one being cleared.
+                var contexts = ['normal', 'insert', 'visual'];
+                for (var j in contexts) {
+                  if (contexts[j] !== ctx) {
+                    var newMapping = {};
+                    for (var key in mapping) {
+                      newMapping[key] = mapping[key];
+                    }
+                    newMapping.context = contexts[j];
+                    this._mapCommand(newMapping);
+                  }
+                }
+              }
+            }
+          }
+        }
+      },
+      // TODO: Expose setOption and getOption as instance methods. Need to decide how to namespace
+      // them, or somehow make them work with the existing CodeMirror setOption/getOption API.
+      setOption: setOption,
+      getOption: getOption,
+      defineOption: defineOption,
+      defineEx: function(name, prefix, func){
+        if (!prefix) {
+          prefix = name;
+        } else if (name.indexOf(prefix) !== 0) {
+          throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
+        }
+        exCommands[name]=func;
+        exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
+      },
+      handleKey: function (cm, key, origin) {
+        var command = this.findKey(cm, key, origin);
+        if (typeof command === 'function') {
+          return command();
+        }
+      },
+      /**
+       * This is the outermost function called by CodeMirror, after keys have
+       * been mapped to their Vim equivalents.
+       *
+       * Finds a command based on the key (and cached keys if there is a
+       * multi-key sequence). Returns `undefined` if no key is matched, a noop
+       * function if a partial match is found (multi-key), and a function to
+       * execute the bound command if a a key is matched. The function always
+       * returns true.
+       */
+      findKey: function(cm, key, origin) {
+        var vim = maybeInitVimState(cm);
+        function handleMacroRecording() {
+          var macroModeState = vimGlobalState.macroModeState;
+          if (macroModeState.isRecording) {
+            if (key == 'q') {
+              macroModeState.exitMacroRecordMode();
+              clearInputState(cm);
+              return true;
+            }
+            if (origin != 'mapping') {
+              logKey(macroModeState, key);
+            }
+          }
+        }
+        function handleEsc() {
+          if (key == '<Esc>') {
+            // Clear input state and get back to normal mode.
+            clearInputState(cm);
+            if (vim.visualMode) {
+              exitVisualMode(cm);
+            } else if (vim.insertMode) {
+              exitInsertMode(cm);
+            }
+            return true;
+          }
+        }
+        function doKeyToKey(keys) {
+          // TODO: prevent infinite recursion.
+          var match;
+          while (keys) {
+            // Pull off one command key, which is either a single character
+            // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
+            match = (/<\w+-.+?>|<\w+>|./).exec(keys);
+            key = match[0];
+            keys = keys.substring(match.index + key.length);
+            CodeMirror.Vim.handleKey(cm, key, 'mapping');
+          }
+        }
+
+        function handleKeyInsertMode() {
+          if (handleEsc()) { return true; }
+          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
+          var keysAreChars = key.length == 1;
+          var match = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
+          // Need to check all key substrings in insert mode.
+          while (keys.length > 1 && match.type != 'full') {
+            var keys = vim.inputState.keyBuffer = keys.slice(1);
+            var thisMatch = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
+            if (thisMatch.type != 'none') { match = thisMatch; }
+          }
+          if (match.type == 'none') { clearInputState(cm); return false; }
+          else if (match.type == 'partial') {
+            if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
+            lastInsertModeKeyTimer = window.setTimeout(
+              function() { if (vim.insertMode && vim.inputState.keyBuffer) { clearInputState(cm); } },
+              getOption('insertModeEscKeysTimeout'));
+            return !keysAreChars;
+          }
+
+          if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
+          if (keysAreChars) {
+            var selections = cm.listSelections();
+            for (var i = 0; i < selections.length; i++) {
+              var here = selections[i].head;
+              cm.replaceRange('', offsetCursor(here, 0, -(keys.length - 1)), here, '+input');
+            }
+            vimGlobalState.macroModeState.lastInsertModeChanges.changes.pop();
+          }
+          clearInputState(cm);
+          return match.command;
+        }
+
+        function handleKeyNonInsertMode() {
+          if (handleMacroRecording() || handleEsc()) { return true; }
+
+          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
+          if (/^[1-9]\d*$/.test(keys)) { return true; }
+
+          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
+          if (!keysMatcher) { clearInputState(cm); return false; }
+          var context = vim.visualMode ? 'visual' :
+                                         'normal';
+          var match = commandDispatcher.matchCommand(keysMatcher[2] || keysMatcher[1], defaultKeymap, vim.inputState, context);
+          if (match.type == 'none') { clearInputState(cm); return false; }
+          else if (match.type == 'partial') { return true; }
+
+          vim.inputState.keyBuffer = '';
+          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
+          if (keysMatcher[1] && keysMatcher[1] != '0') {
+            vim.inputState.pushRepeatDigit(keysMatcher[1]);
+          }
+          return match.command;
+        }
+
+        var command;
+        if (vim.insertMode) { command = handleKeyInsertMode(); }
+        else { command = handleKeyNonInsertMode(); }
+        if (command === false) {
+          return !vim.insertMode && key.length === 1 ? function() { return true; } : undefined;
+        } else if (command === true) {
+          // TODO: Look into using CodeMirror's multi-key handling.
+          // Return no-op since we are caching the key. Counts as handled, but
+          // don't want act on it just yet.
+          return function() { return true; };
+        } else {
+          return function() {
+            return cm.operation(function() {
+              cm.curOp.isVimOp = true;
+              try {
+                if (command.type == 'keyToKey') {
+                  doKeyToKey(command.toKeys);
+                } else {
+                  commandDispatcher.processCommand(cm, vim, command);
+                }
+              } catch (e) {
+                // clear VIM state in case it's in a bad state.
+                cm.state.vim = undefined;
+                maybeInitVimState(cm);
+                if (!CodeMirror.Vim.suppressErrorLogging) {
+                  console['log'](e);
+                }
+                throw e;
+              }
+              return true;
+            });
+          };
+        }
+      },
+      handleEx: function(cm, input) {
+        exCommandDispatcher.processCommand(cm, input);
+      },
+
+      defineMotion: defineMotion,
+      defineAction: defineAction,
+      defineOperator: defineOperator,
+      mapCommand: mapCommand,
+      _mapCommand: _mapCommand,
+
+      defineRegister: defineRegister,
+
+      exitVisualMode: exitVisualMode,
+      exitInsertMode: exitInsertMode
+    };
+
+    // Represents the current input state.
+    function InputState() {
+      this.prefixRepeat = [];
+      this.motionRepeat = [];
+
+      this.operator = null;
+      this.operatorArgs = null;
+      this.motion = null;
+      this.motionArgs = null;
+      this.keyBuffer = []; // For matching multi-key commands.
+      this.registerName = null; // Defaults to the unnamed register.
+    }
+    InputState.prototype.pushRepeatDigit = function(n) {
+      if (!this.operator) {
+        this.prefixRepeat = this.prefixRepeat.concat(n);
+      } else {
+        this.motionRepeat = this.motionRepeat.concat(n);
+      }
+    };
+    InputState.prototype.getRepeat = function() {
+      var repeat = 0;
+      if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
+        repeat = 1;
+        if (this.prefixRepeat.length > 0) {
+          repeat *= parseInt(this.prefixRepeat.join(''), 10);
+        }
+        if (this.motionRepeat.length > 0) {
+          repeat *= parseInt(this.motionRepeat.join(''), 10);
+        }
+      }
+      return repeat;
+    };
+
+    function clearInputState(cm, reason) {
+      cm.state.vim.inputState = new InputState();
+      CodeMirror.signal(cm, 'vim-command-done', reason);
+    }
+
+    /*
+     * Register stores information about copy and paste registers.  Besides
+     * text, a register must store whether it is linewise (i.e., when it is
+     * pasted, should it insert itself into a new line, or should the text be
+     * inserted at the cursor position.)
+     */
+    function Register(text, linewise, blockwise) {
+      this.clear();
+      this.keyBuffer = [text || ''];
+      this.insertModeChanges = [];
+      this.searchQueries = [];
+      this.linewise = !!linewise;
+      this.blockwise = !!blockwise;
+    }
+    Register.prototype = {
+      setText: function(text, linewise, blockwise) {
+        this.keyBuffer = [text || ''];
+        this.linewise = !!linewise;
+        this.blockwise = !!blockwise;
+      },
+      pushText: function(text, linewise) {
+        // if this register has ever been set to linewise, use linewise.
+        if (linewise) {
+          if (!this.linewise) {
+            this.keyBuffer.push('\n');
+          }
+          this.linewise = true;
+        }
+        this.keyBuffer.push(text);
+      },
+      pushInsertModeChanges: function(changes) {
+        this.insertModeChanges.push(createInsertModeChanges(changes));
+      },
+      pushSearchQuery: function(query) {
+        this.searchQueries.push(query);
+      },
+      clear: function() {
+        this.keyBuffer = [];
+        this.insertModeChanges = [];
+        this.searchQueries = [];
+        this.linewise = false;
+      },
+      toString: function() {
+        return this.keyBuffer.join('');
+      }
+    };
+
+    /**
+     * Defines an external register.
+     *
+     * The name should be a single character that will be used to reference the register.
+     * The register should support setText, pushText, clear, and toString(). See Register
+     * for a reference implementation.
+     */
+    function defineRegister(name, register) {
+      var registers = vimGlobalState.registerController.registers;
+      if (!name || name.length != 1) {
+        throw Error('Register name must be 1 character');
+      }
+      if (registers[name]) {
+        throw Error('Register already defined ' + name);
+      }
+      registers[name] = register;
+      validRegisters.push(name);
+    }
+
+    /*
+     * vim registers allow you to keep many independent copy and paste buffers.
+     * See http://usevim.com/2012/04/13/registers/ for an introduction.
+     *
+     * RegisterController keeps the state of all the registers.  An initial
+     * state may be passed in.  The unnamed register '"' will always be
+     * overridden.
+     */
+    function RegisterController(registers) {
+      this.registers = registers;
+      this.unnamedRegister = registers['"'] = new Register();
+      registers['.'] = new Register();
+      registers[':'] = new Register();
+      registers['/'] = new Register();
+    }
+    RegisterController.prototype = {
+      pushText: function(registerName, operator, text, linewise, blockwise) {
+        if (linewise && text.charAt(text.length - 1) !== '\n'){
+          text += '\n';
+        }
+        // Lowercase and uppercase registers refer to the same register.
+        // Uppercase just means append.
+        var register = this.isValidRegister(registerName) ?
+            this.getRegister(registerName) : null;
+        // if no register/an invalid register was specified, things go to the
+        // default registers
+        if (!register) {
+          switch (operator) {
+            case 'yank':
+              // The 0 register contains the text from the most recent yank.
+              this.registers['0'] = new Register(text, linewise, blockwise);
+              break;
+            case 'delete':
+            case 'change':
+              if (text.indexOf('\n') == -1) {
+                // Delete less than 1 line. Update the small delete register.
+                this.registers['-'] = new Register(text, linewise);
+              } else {
+                // Shift down the contents of the numbered registers and put the
+                // deleted text into register 1.
+                this.shiftNumericRegisters_();
+                this.registers['1'] = new Register(text, linewise);
+              }
+              break;
+          }
+          // Make sure the unnamed register is set to what just happened
+          this.unnamedRegister.setText(text, linewise, blockwise);
+          return;
+        }
+
+        // If we've gotten to this point, we've actually specified a register
+        var append = isUpperCase(registerName);
+        if (append) {
+          register.pushText(text, linewise);
+        } else {
+          register.setText(text, linewise, blockwise);
+        }
+        // The unnamed register always has the same value as the last used
+        // register.
+        this.unnamedRegister.setText(register.toString(), linewise);
+      },
+      // Gets the register named @name.  If one of @name doesn't already exist,
+      // create it.  If @name is invalid, return the unnamedRegister.
+      getRegister: function(name) {
+        if (!this.isValidRegister(name)) {
+          return this.unnamedRegister;
+        }
+        name = name.toLowerCase();
+        if (!this.registers[name]) {
+          this.registers[name] = new Register();
+        }
+        return this.registers[name];
+      },
+      isValidRegister: function(name) {
+        return name && inArray(name, validRegisters);
+      },
+      shiftNumericRegisters_: function() {
+        for (var i = 9; i >= 2; i--) {
+          this.registers[i] = this.getRegister('' + (i - 1));
+        }
+      }
+    };
+    function HistoryController() {
+        this.historyBuffer = [];
+        this.iterator = 0;
+        this.initialPrefix = null;
+    }
+    HistoryController.prototype = {
+      // the input argument here acts a user entered prefix for a small time
+      // until we start autocompletion in which case it is the autocompleted.
+      nextMatch: function (input, up) {
+        var historyBuffer = this.historyBuffer;
+        var dir = up ? -1 : 1;
+        if (this.initialPrefix === null) this.initialPrefix = input;
+        for (var i = this.iterator + dir; up ? i >= 0 : i < historyBuffer.length; i+= dir) {
+          var element = historyBuffer[i];
+          for (var j = 0; j <= element.length; j++) {
+            if (this.initialPrefix == element.substring(0, j)) {
+              this.iterator = i;
+              return element;
+            }
+          }
+        }
+        // should return the user input in case we reach the end of buffer.
+        if (i >= historyBuffer.length) {
+          this.iterator = historyBuffer.length;
+          return this.initialPrefix;
+        }
+        // return the last autocompleted query or exCommand as it is.
+        if (i < 0 ) return input;
+      },
+      pushInput: function(input) {
+        var index = this.historyBuffer.indexOf(input);
+        if (index > -1) this.historyBuffer.splice(index, 1);
+        if (input.length) this.historyBuffer.push(input);
+      },
+      reset: function() {
+        this.initialPrefix = null;
+        this.iterator = this.historyBuffer.length;
+      }
+    };
+    var commandDispatcher = {
+      matchCommand: function(keys, keyMap, inputState, context) {
+        var matches = commandMatches(keys, keyMap, context, inputState);
+        if (!matches.full && !matches.partial) {
+          return {type: 'none'};
+        } else if (!matches.full && matches.partial) {
+          return {type: 'partial'};
+        }
+
+        var bestMatch;
+        for (var i = 0; i < matches.full.length; i++) {
+          var match = matches.full[i];
+          if (!bestMatch) {
+            bestMatch = match;
+          }
+        }
+        if (bestMatch.keys.slice(-11) == '<character>') {
+          var character = lastChar(keys);
+          if (!character) return {type: 'none'};
+          inputState.selectedCharacter = character;
+        }
+        return {type: 'full', command: bestMatch};
+      },
+      processCommand: function(cm, vim, command) {
+        vim.inputState.repeatOverride = command.repeatOverride;
+        switch (command.type) {
+          case 'motion':
+            this.processMotion(cm, vim, command);
+            break;
+          case 'operator':
+            this.processOperator(cm, vim, command);
+            break;
+          case 'operatorMotion':
+            this.processOperatorMotion(cm, vim, command);
+            break;
+          case 'action':
+            this.processAction(cm, vim, command);
+            break;
+          case 'search':
+            this.processSearch(cm, vim, command);
+            break;
+          case 'ex':
+          case 'keyToEx':
+            this.processEx(cm, vim, command);
+            break;
+          default:
+            break;
+        }
+      },
+      processMotion: function(cm, vim, command) {
+        vim.inputState.motion = command.motion;
+        vim.inputState.motionArgs = copyArgs(command.motionArgs);
+        this.evalInput(cm, vim);
+      },
+      processOperator: function(cm, vim, command) {
+        var inputState = vim.inputState;
+        if (inputState.operator) {
+          if (inputState.operator == command.operator) {
+            // Typing an operator twice like 'dd' makes the operator operate
+            // linewise
+            inputState.motion = 'expandToLine';
+            inputState.motionArgs = { linewise: true };
+            this.evalInput(cm, vim);
+            return;
+          } else {
+            // 2 different operators in a row doesn't make sense.
+            clearInputState(cm);
+          }
+        }
+        inputState.operator = command.operator;
+        inputState.operatorArgs = copyArgs(command.operatorArgs);
+        if (command.exitVisualBlock) {
+            vim.visualBlock = false;
+            updateCmSelection(cm);
+        }
+        if (vim.visualMode) {
+          // Operating on a selection in visual mode. We don't need a motion.
+          this.evalInput(cm, vim);
+        }
+      },
+      processOperatorMotion: function(cm, vim, command) {
+        var visualMode = vim.visualMode;
+        var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
+        if (operatorMotionArgs) {
+          // Operator motions may have special behavior in visual mode.
+          if (visualMode && operatorMotionArgs.visualLine) {
+            vim.visualLine = true;
+          }
+        }
+        this.processOperator(cm, vim, command);
+        if (!visualMode) {
+          this.processMotion(cm, vim, command);
+        }
+      },
+      processAction: function(cm, vim, command) {
+        var inputState = vim.inputState;
+        var repeat = inputState.getRepeat();
+        var repeatIsExplicit = !!repeat;
+        var actionArgs = copyArgs(command.actionArgs) || {};
+        if (inputState.selectedCharacter) {
+          actionArgs.selectedCharacter = inputState.selectedCharacter;
+        }
+        // Actions may or may not have motions and operators. Do these first.
+        if (command.operator) {
+          this.processOperator(cm, vim, command);
+        }
+        if (command.motion) {
+          this.processMotion(cm, vim, command);
+        }
+        if (command.motion || command.operator) {
+          this.evalInput(cm, vim);
+        }
+        actionArgs.repeat = repeat || 1;
+        actionArgs.repeatIsExplicit = repeatIsExplicit;
+        actionArgs.registerName = inputState.registerName;
+        clearInputState(cm);
+        vim.lastMotion = null;
+        if (command.isEdit) {
+          this.recordLastEdit(vim, inputState, command);
+        }
+        actions[command.action](cm, actionArgs, vim);
+      },
+      processSearch: function(cm, vim, command) {
+        if (!cm.getSearchCursor) {
+          // Search depends on SearchCursor.
+          return;
+        }
+        var forward = command.searchArgs.forward;
+        var wholeWordOnly = command.searchArgs.wholeWordOnly;
+        getSearchState(cm).setReversed(!forward);
+        var promptPrefix = (forward) ? '/' : '?';
+        var originalQuery = getSearchState(cm).getQuery();
+        var originalScrollPos = cm.getScrollInfo();
+        function handleQuery(query, ignoreCase, smartCase) {
+          vimGlobalState.searchHistoryController.pushInput(query);
+          vimGlobalState.searchHistoryController.reset();
+          try {
+            updateSearchQuery(cm, query, ignoreCase, smartCase);
+          } catch (e) {
+            showConfirm(cm, 'Invalid regex: ' + query);
+            clearInputState(cm);
+            return;
+          }
+          commandDispatcher.processMotion(cm, vim, {
+            type: 'motion',
+            motion: 'findNext',
+            motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
+          });
+        }
+        function onPromptClose(query) {
+          cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+          handleQuery(query, true /** ignoreCase */, true /** smartCase */);
+          var macroModeState = vimGlobalState.macroModeState;
+          if (macroModeState.isRecording) {
+            logSearchQuery(macroModeState, query);
+          }
+        }
+        function onPromptKeyUp(e, query, close) {
+          var keyName = CodeMirror.keyName(e), up, offset;
+          if (keyName == 'Up' || keyName == 'Down') {
+            up = keyName == 'Up' ? true : false;
+            offset = e.target ? e.target.selectionEnd : 0;
+            query = vimGlobalState.searchHistoryController.nextMatch(query, up) || '';
+            close(query);
+            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
+          } else {
+            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
+              vimGlobalState.searchHistoryController.reset();
+          }
+          var parsedQuery;
+          try {
+            parsedQuery = updateSearchQuery(cm, query,
+                true /** ignoreCase */, true /** smartCase */);
+          } catch (e) {
+            // Swallow bad regexes for incremental search.
+          }
+          if (parsedQuery) {
+            cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
+          } else {
+            clearSearchHighlight(cm);
+            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+          }
+        }
+        function onPromptKeyDown(e, query, close) {
+          var keyName = CodeMirror.keyName(e);
+          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+              (keyName == 'Backspace' && query == '')) {
+            vimGlobalState.searchHistoryController.pushInput(query);
+            vimGlobalState.searchHistoryController.reset();
+            updateSearchQuery(cm, originalQuery);
+            clearSearchHighlight(cm);
+            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
+            CodeMirror.e_stop(e);
+            clearInputState(cm);
+            close();
+            cm.focus();
+          } else if (keyName == 'Up' || keyName == 'Down') {
+            CodeMirror.e_stop(e);
+          } else if (keyName == 'Ctrl-U') {
+            // Ctrl-U clears input.
+            CodeMirror.e_stop(e);
+            close('');
+          }
+        }
+        switch (command.searchArgs.querySrc) {
+          case 'prompt':
+            var macroModeState = vimGlobalState.macroModeState;
+            if (macroModeState.isPlaying) {
+              var query = macroModeState.replaySearchQueries.shift();
+              handleQuery(query, true /** ignoreCase */, false /** smartCase */);
+            } else {
+              showPrompt(cm, {
+                  onClose: onPromptClose,
+                  prefix: promptPrefix,
+                  desc: searchPromptDesc,
+                  onKeyUp: onPromptKeyUp,
+                  onKeyDown: onPromptKeyDown
+              });
+            }
+            break;
+          case 'wordUnderCursor':
+            var word = expandWordUnderCursor(cm, false /** inclusive */,
+                true /** forward */, false /** bigWord */,
+                true /** noSymbol */);
+            var isKeyword = true;
+            if (!word) {
+              word = expandWordUnderCursor(cm, false /** inclusive */,
+                  true /** forward */, false /** bigWord */,
+                  false /** noSymbol */);
+              isKeyword = false;
+            }
+            if (!word) {
+              return;
+            }
+            var query = cm.getLine(word.start.line).substring(word.start.ch,
+                word.end.ch);
+            if (isKeyword && wholeWordOnly) {
+                query = '\\b' + query + '\\b';
+            } else {
+              query = escapeRegex(query);
+            }
+
+            // cachedCursor is used to save the old position of the cursor
+            // when * or # causes vim to seek for the nearest word and shift
+            // the cursor before entering the motion.
+            vimGlobalState.jumpList.cachedCursor = cm.getCursor();
+            cm.setCursor(word.start);
+
+            handleQuery(query, true /** ignoreCase */, false /** smartCase */);
+            break;
+        }
+      },
+      processEx: function(cm, vim, command) {
+        function onPromptClose(input) {
+          // Give the prompt some time to close so that if processCommand shows
+          // an error, the elements don't overlap.
+          vimGlobalState.exCommandHistoryController.pushInput(input);
+          vimGlobalState.exCommandHistoryController.reset();
+          exCommandDispatcher.processCommand(cm, input);
+        }
+        function onPromptKeyDown(e, input, close) {
+          var keyName = CodeMirror.keyName(e), up, offset;
+          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+              (keyName == 'Backspace' && input == '')) {
+            vimGlobalState.exCommandHistoryController.pushInput(input);
+            vimGlobalState.exCommandHistoryController.reset();
+            CodeMirror.e_stop(e);
+            clearInputState(cm);
+            close();
+            cm.focus();
+          }
+          if (keyName == 'Up' || keyName == 'Down') {
+            CodeMirror.e_stop(e);
+            up = keyName == 'Up' ? true : false;
+            offset = e.target ? e.target.selectionEnd : 0;
+            input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
+            close(input);
+            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
+          } else if (keyName == 'Ctrl-U') {
+            // Ctrl-U clears input.
+            CodeMirror.e_stop(e);
+            close('');
+          } else {
+            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
+              vimGlobalState.exCommandHistoryController.reset();
+          }
+        }
+        if (command.type == 'keyToEx') {
+          // Handle user defined Ex to Ex mappings
+          exCommandDispatcher.processCommand(cm, command.exArgs.input);
+        } else {
+          if (vim.visualMode) {
+            showPrompt(cm, { onClose: onPromptClose, prefix: ':', value: '\'<,\'>',
+                onKeyDown: onPromptKeyDown, selectValueOnOpen: false});
+          } else {
+            showPrompt(cm, { onClose: onPromptClose, prefix: ':',
+                onKeyDown: onPromptKeyDown});
+          }
+        }
+      },
+      evalInput: function(cm, vim) {
+        // If the motion command is set, execute both the operator and motion.
+        // Otherwise return.
+        var inputState = vim.inputState;
+        var motion = inputState.motion;
+        var motionArgs = inputState.motionArgs || {};
+        var operator = inputState.operator;
+        var operatorArgs = inputState.operatorArgs || {};
+        var registerName = inputState.registerName;
+        var sel = vim.sel;
+        // TODO: Make sure cm and vim selections are identical outside visual mode.
+        var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
+        var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
+        var oldHead = copyCursor(origHead);
+        var oldAnchor = copyCursor(origAnchor);
+        var newHead, newAnchor;
+        var repeat;
+        if (operator) {
+          this.recordLastEdit(vim, inputState);
+        }
+        if (inputState.repeatOverride !== undefined) {
+          // If repeatOverride is specified, that takes precedence over the
+          // input state's repeat. Used by Ex mode and can be user defined.
+          repeat = inputState.repeatOverride;
+        } else {
+          repeat = inputState.getRepeat();
+        }
+        if (repeat > 0 && motionArgs.explicitRepeat) {
+          motionArgs.repeatIsExplicit = true;
+        } else if (motionArgs.noRepeat ||
+            (!motionArgs.explicitRepeat && repeat === 0)) {
+          repeat = 1;
+          motionArgs.repeatIsExplicit = false;
+        }
+        if (inputState.selectedCharacter) {
+          // If there is a character input, stick it in all of the arg arrays.
+          motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
+              inputState.selectedCharacter;
+        }
+        motionArgs.repeat = repeat;
+        clearInputState(cm);
+        if (motion) {
+          var motionResult = motions[motion](cm, origHead, motionArgs, vim);
+          vim.lastMotion = motions[motion];
+          if (!motionResult) {
+            return;
+          }
+          if (motionArgs.toJumplist) {
+            var jumpList = vimGlobalState.jumpList;
+            // if the current motion is # or *, use cachedCursor
+            var cachedCursor = jumpList.cachedCursor;
+            if (cachedCursor) {
+              recordJumpPosition(cm, cachedCursor, motionResult);
+              delete jumpList.cachedCursor;
+            } else {
+              recordJumpPosition(cm, origHead, motionResult);
+            }
+          }
+          if (motionResult instanceof Array) {
+            newAnchor = motionResult[0];
+            newHead = motionResult[1];
+          } else {
+            newHead = motionResult;
+          }
+          // TODO: Handle null returns from motion commands better.
+          if (!newHead) {
+            newHead = copyCursor(origHead);
+          }
+          if (vim.visualMode) {
+            if (!(vim.visualBlock && newHead.ch === Infinity)) {
+              newHead = clipCursorToContent(cm, newHead);
+            }
+            if (newAnchor) {
+              newAnchor = clipCursorToContent(cm, newAnchor);
+            }
+            newAnchor = newAnchor || oldAnchor;
+            sel.anchor = newAnchor;
+            sel.head = newHead;
+            updateCmSelection(cm);
+            updateMark(cm, vim, '<',
+                cursorIsBefore(newAnchor, newHead) ? newAnchor
+                    : newHead);
+            updateMark(cm, vim, '>',
+                cursorIsBefore(newAnchor, newHead) ? newHead
+                    : newAnchor);
+          } else if (!operator) {
+            newHead = clipCursorToContent(cm, newHead);
+            cm.setCursor(newHead.line, newHead.ch);
+          }
+        }
+        if (operator) {
+          if (operatorArgs.lastSel) {
+            // Replaying a visual mode operation
+            newAnchor = oldAnchor;
+            var lastSel = operatorArgs.lastSel;
+            var lineOffset = Math.abs(lastSel.head.line - lastSel.anchor.line);
+            var chOffset = Math.abs(lastSel.head.ch - lastSel.anchor.ch);
+            if (lastSel.visualLine) {
+              // Linewise Visual mode: The same number of lines.
+              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
+            } else if (lastSel.visualBlock) {
+              // Blockwise Visual mode: The same number of lines and columns.
+              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch + chOffset);
+            } else if (lastSel.head.line == lastSel.anchor.line) {
+              // Normal Visual mode within one line: The same number of characters.
+              newHead = Pos(oldAnchor.line, oldAnchor.ch + chOffset);
+            } else {
+              // Normal Visual mode with several lines: The same number of lines, in the
+              // last line the same number of characters as in the last line the last time.
+              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
+            }
+            vim.visualMode = true;
+            vim.visualLine = lastSel.visualLine;
+            vim.visualBlock = lastSel.visualBlock;
+            sel = vim.sel = {
+              anchor: newAnchor,
+              head: newHead
+            };
+            updateCmSelection(cm);
+          } else if (vim.visualMode) {
+            operatorArgs.lastSel = {
+              anchor: copyCursor(sel.anchor),
+              head: copyCursor(sel.head),
+              visualBlock: vim.visualBlock,
+              visualLine: vim.visualLine
+            };
+          }
+          var curStart, curEnd, linewise, mode;
+          var cmSel;
+          if (vim.visualMode) {
+            // Init visual op
+            curStart = cursorMin(sel.head, sel.anchor);
+            curEnd = cursorMax(sel.head, sel.anchor);
+            linewise = vim.visualLine || operatorArgs.linewise;
+            mode = vim.visualBlock ? 'block' :
+                   linewise ? 'line' :
+                   'char';
+            cmSel = makeCmSelection(cm, {
+              anchor: curStart,
+              head: curEnd
+            }, mode);
+            if (linewise) {
+              var ranges = cmSel.ranges;
+              if (mode == 'block') {
+                // Linewise operators in visual block mode extend to end of line
+                for (var i = 0; i < ranges.length; i++) {
+                  ranges[i].head.ch = lineLength(cm, ranges[i].head.line);
+                }
+              } else if (mode == 'line') {
+                ranges[0].head = Pos(ranges[0].head.line + 1, 0);
+              }
+            }
+          } else {
+            // Init motion op
+            curStart = copyCursor(newAnchor || oldAnchor);
+            curEnd = copyCursor(newHead || oldHead);
+            if (cursorIsBefore(curEnd, curStart)) {
+              var tmp = curStart;
+              curStart = curEnd;
+              curEnd = tmp;
+            }
+            linewise = motionArgs.linewise || operatorArgs.linewise;
+            if (linewise) {
+              // Expand selection to entire line.
+              expandSelectionToLine(cm, curStart, curEnd);
+            } else if (motionArgs.forward) {
+              // Clip to trailing newlines only if the motion goes forward.
+              clipToLine(cm, curStart, curEnd);
+            }
+            mode = 'char';
+            var exclusive = !motionArgs.inclusive || linewise;
+            cmSel = makeCmSelection(cm, {
+              anchor: curStart,
+              head: curEnd
+            }, mode, exclusive);
+          }
+          cm.setSelections(cmSel.ranges, cmSel.primary);
+          vim.lastMotion = null;
+          operatorArgs.repeat = repeat; // For indent in visual mode.
+          operatorArgs.registerName = registerName;
+          // Keep track of linewise as it affects how paste and change behave.
+          operatorArgs.linewise = linewise;
+          var operatorMoveTo = operators[operator](
+            cm, operatorArgs, cmSel.ranges, oldAnchor, newHead);
+          if (vim.visualMode) {
+            exitVisualMode(cm, operatorMoveTo != null);
+          }
+          if (operatorMoveTo) {
+            cm.setCursor(operatorMoveTo);
+          }
+        }
+      },
+      recordLastEdit: function(vim, inputState, actionCommand) {
+        var macroModeState = vimGlobalState.macroModeState;
+        if (macroModeState.isPlaying) { return; }
+        vim.lastEditInputState = inputState;
+        vim.lastEditActionCommand = actionCommand;
+        macroModeState.lastInsertModeChanges.changes = [];
+        macroModeState.lastInsertModeChanges.expectCursorActivityForChange = false;
+        macroModeState.lastInsertModeChanges.visualBlock = vim.visualBlock ? vim.sel.head.line - vim.sel.anchor.line : 0;
+      }
+    };
+
+    /**
+     * typedef {Object{line:number,ch:number}} Cursor An object containing the
+     *     position of the cursor.
+     */
+    // All of the functions below return Cursor objects.
+    var motions = {
+      moveToTopLine: function(cm, _head, motionArgs) {
+        var line = getUserVisibleLines(cm).top + motionArgs.repeat -1;
+        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+      },
+      moveToMiddleLine: function(cm) {
+        var range = getUserVisibleLines(cm);
+        var line = Math.floor((range.top + range.bottom) * 0.5);
+        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+      },
+      moveToBottomLine: function(cm, _head, motionArgs) {
+        var line = getUserVisibleLines(cm).bottom - motionArgs.repeat +1;
+        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
+      },
+      expandToLine: function(_cm, head, motionArgs) {
+        // Expands forward to end of line, and then to next line if repeat is
+        // >1. Does not handle backward motion!
+        var cur = head;
+        return Pos(cur.line + motionArgs.repeat - 1, Infinity);
+      },
+      findNext: function(cm, _head, motionArgs) {
+        var state = getSearchState(cm);
+        var query = state.getQuery();
+        if (!query) {
+          return;
+        }
+        var prev = !motionArgs.forward;
+        // If search is initiated with ? instead of /, negate direction.
+        prev = (state.isReversed()) ? !prev : prev;
+        highlightSearchMatches(cm, query);
+        return findNext(cm, prev/** prev */, query, motionArgs.repeat);
+      },
+      goToMark: function(cm, _head, motionArgs, vim) {
+        var pos = getMarkPos(cm, vim, motionArgs.selectedCharacter);
+        if (pos) {
+          return motionArgs.linewise ? { line: pos.line, ch: findFirstNonWhiteSpaceCharacter(cm.getLine(pos.line)) } : pos;
+        }
+        return null;
+      },
+      moveToOtherHighlightedEnd: function(cm, _head, motionArgs, vim) {
+        if (vim.visualBlock && motionArgs.sameLine) {
+          var sel = vim.sel;
+          return [
+            clipCursorToContent(cm, Pos(sel.anchor.line, sel.head.ch)),
+            clipCursorToContent(cm, Pos(sel.head.line, sel.anchor.ch))
+          ];
+        } else {
+          return ([vim.sel.head, vim.sel.anchor]);
+        }
+      },
+      jumpToMark: function(cm, head, motionArgs, vim) {
+        var best = head;
+        for (var i = 0; i < motionArgs.repeat; i++) {
+          var cursor = best;
+          for (var key in vim.marks) {
+            if (!isLowerCase(key)) {
+              continue;
+            }
+            var mark = vim.marks[key].find();
+            var isWrongDirection = (motionArgs.forward) ?
+              cursorIsBefore(mark, cursor) : cursorIsBefore(cursor, mark);
+
+            if (isWrongDirection) {
+              continue;
+            }
+            if (motionArgs.linewise && (mark.line == cursor.line)) {
+              continue;
+            }
+
+            var equal = cursorEqual(cursor, best);
+            var between = (motionArgs.forward) ?
+              cursorIsBetween(cursor, mark, best) :
+              cursorIsBetween(best, mark, cursor);
+
+            if (equal || between) {
+              best = mark;
+            }
+          }
+        }
+
+        if (motionArgs.linewise) {
+          // Vim places the cursor on the first non-whitespace character of
+          // the line if there is one, else it places the cursor at the end
+          // of the line, regardless of whether a mark was found.
+          best = Pos(best.line, findFirstNonWhiteSpaceCharacter(cm.getLine(best.line)));
+        }
+        return best;
+      },
+      moveByCharacters: function(_cm, head, motionArgs) {
+        var cur = head;
+        var repeat = motionArgs.repeat;
+        var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
+        return Pos(cur.line, ch);
+      },
+      moveByLines: function(cm, head, motionArgs, vim) {
+        var cur = head;
+        var endCh = cur.ch;
+        // Depending what our last motion was, we may want to do different
+        // things. If our last motion was moving vertically, we want to
+        // preserve the HPos from our last horizontal move.  If our last motion
+        // was going to the end of a line, moving vertically we should go to
+        // the end of the line, etc.
+        switch (vim.lastMotion) {
+          case this.moveByLines:
+          case this.moveByDisplayLines:
+          case this.moveByScroll:
+          case this.moveToColumn:
+          case this.moveToEol:
+            endCh = vim.lastHPos;
+            break;
+          default:
+            vim.lastHPos = endCh;
+        }
+        var repeat = motionArgs.repeat+(motionArgs.repeatOffset||0);
+        var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
+        var first = cm.firstLine();
+        var last = cm.lastLine();
+        var posV = cm.findPosV(cur, (motionArgs.forward ? repeat : -repeat), 'line', vim.lastHSPos);
+        var hasMarkedText = motionArgs.forward ? posV.line > line : posV.line < line;
+        if (hasMarkedText) {
+          line = posV.line;
+          endCh = posV.ch;
+        }
+        // Vim go to line begin or line end when cursor at first/last line and
+        // move to previous/next line is triggered.
+        if (line < first && cur.line == first){
+          return this.moveToStartOfLine(cm, head, motionArgs, vim);
+        }else if (line > last && cur.line == last){
+            return this.moveToEol(cm, head, motionArgs, vim, true);
+        }
+        if (motionArgs.toFirstChar){
+          endCh=findFirstNonWhiteSpaceCharacter(cm.getLine(line));
+          vim.lastHPos = endCh;
+        }
+        vim.lastHSPos = cm.charCoords(Pos(line, endCh),'div').left;
+        return Pos(line, endCh);
+      },
+      moveByDisplayLines: function(cm, head, motionArgs, vim) {
+        var cur = head;
+        switch (vim.lastMotion) {
+          case this.moveByDisplayLines:
+          case this.moveByScroll:
+          case this.moveByLines:
+          case this.moveToColumn:
+          case this.moveToEol:
+            break;
+          default:
+            vim.lastHSPos = cm.charCoords(cur,'div').left;
+        }
+        var repeat = motionArgs.repeat;
+        var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),'line',vim.lastHSPos);
+        if (res.hitSide) {
+          if (motionArgs.forward) {
+            var lastCharCoords = cm.charCoords(res, 'div');
+            var goalCoords = { top: lastCharCoords.top + 8, left: vim.lastHSPos };
+            var res = cm.coordsChar(goalCoords, 'div');
+          } else {
+            var resCoords = cm.charCoords(Pos(cm.firstLine(), 0), 'div');
+            resCoords.left = vim.lastHSPos;
+            res = cm.coordsChar(resCoords, 'div');
+          }
+        }
+        vim.lastHPos = res.ch;
+        return res;
+      },
+      moveByPage: function(cm, head, motionArgs) {
+        // CodeMirror only exposes functions that move the cursor page down, so
+        // doing this bad hack to move the cursor and move it back. evalInput
+        // will move the cursor to where it should be in the end.
+        var curStart = head;
+        var repeat = motionArgs.repeat;
+        return cm.findPosV(curStart, (motionArgs.forward ? repeat : -repeat), 'page');
+      },
+      moveByParagraph: function(cm, head, motionArgs) {
+        var dir = motionArgs.forward ? 1 : -1;
+        return findParagraph(cm, head, motionArgs.repeat, dir);
+      },
+      moveBySentence: function(cm, head, motionArgs) {
+        var dir = motionArgs.forward ? 1 : -1;
+        return findSentence(cm, head, motionArgs.repeat, dir);
+      },
+      moveByScroll: function(cm, head, motionArgs, vim) {
+        var scrollbox = cm.getScrollInfo();
+        var curEnd = null;
+        var repeat = motionArgs.repeat;
+        if (!repeat) {
+          repeat = scrollbox.clientHeight / (2 * cm.defaultTextHeight());
+        }
+        var orig = cm.charCoords(head, 'local');
+        motionArgs.repeat = repeat;
+        var curEnd = motions.moveByDisplayLines(cm, head, motionArgs, vim);
+        if (!curEnd) {
+          return null;
+        }
+        var dest = cm.charCoords(curEnd, 'local');
+        cm.scrollTo(null, scrollbox.top + dest.top - orig.top);
+        return curEnd;
+      },
+      moveByWords: function(cm, head, motionArgs) {
+        return moveToWord(cm, head, motionArgs.repeat, !!motionArgs.forward,
+            !!motionArgs.wordEnd, !!motionArgs.bigWord);
+      },
+      moveTillCharacter: function(cm, _head, motionArgs) {
+        var repeat = motionArgs.repeat;
+        var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
+            motionArgs.selectedCharacter);
+        var increment = motionArgs.forward ? -1 : 1;
+        recordLastCharacterSearch(increment, motionArgs);
+        if (!curEnd) return null;
+        curEnd.ch += increment;
+        return curEnd;
+      },
+      moveToCharacter: function(cm, head, motionArgs) {
+        var repeat = motionArgs.repeat;
+        recordLastCharacterSearch(0, motionArgs);
+        return moveToCharacter(cm, repeat, motionArgs.forward,
+            motionArgs.selectedCharacter) || head;
+      },
+      moveToSymbol: function(cm, head, motionArgs) {
+        var repeat = motionArgs.repeat;
+        return findSymbol(cm, repeat, motionArgs.forward,
+            motionArgs.selectedCharacter) || head;
+      },
+      moveToColumn: function(cm, head, motionArgs, vim) {
+        var repeat = motionArgs.repeat;
+        // repeat is equivalent to which column we want to move to!
+        vim.lastHPos = repeat - 1;
+        vim.lastHSPos = cm.charCoords(head,'div').left;
+        return moveToColumn(cm, repeat);
+      },
+      moveToEol: function(cm, head, motionArgs, vim, keepHPos) {
+        var cur = head;
+        var retval= Pos(cur.line + motionArgs.repeat - 1, Infinity);
+        var end=cm.clipPos(retval);
+        end.ch--;
+        if (!keepHPos) {
+          vim.lastHPos = Infinity;
+          vim.lastHSPos = cm.charCoords(end,'div').left;
+        }
+        return retval;
+      },
+      moveToFirstNonWhiteSpaceCharacter: function(cm, head) {
+        // Go to the start of the line where the text begins, or the end for
+        // whitespace-only lines
+        var cursor = head;
+        return Pos(cursor.line,
+                   findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)));
+      },
+      moveToMatchedSymbol: function(cm, head) {
+        var cursor = head;
+        var line = cursor.line;
+        var ch = cursor.ch;
+        var lineText = cm.getLine(line);
+        var symbol;
+        for (; ch < lineText.length; ch++) {
+          symbol = lineText.charAt(ch);
+          if (symbol && isMatchableSymbol(symbol)) {
+            var style = cm.getTokenTypeAt(Pos(line, ch + 1));
+            if (style !== "string" && style !== "comment") {
+              break;
+            }
+          }
+        }
+        if (ch < lineText.length) {
+          // Only include angle brackets in analysis if they are being matched.
+          var re = (ch === '<' || ch === '>') ? /[(){}[\]<>]/ : /[(){}[\]]/;
+          var matched = cm.findMatchingBracket(Pos(line, ch), {bracketRegex: re});
+          return matched.to;
+        } else {
+          return cursor;
+        }
+      },
+      moveToStartOfLine: function(_cm, head) {
+        return Pos(head.line, 0);
+      },
+      moveToLineOrEdgeOfDocument: function(cm, _head, motionArgs) {
+        var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
+        if (motionArgs.repeatIsExplicit) {
+          lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
+        }
+        return Pos(lineNum,
+                   findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)));
+      },
+      textObjectManipulation: function(cm, head, motionArgs, vim) {
+        // TODO: lots of possible exceptions that can be thrown here. Try da(
+        //     outside of a () block.
+        var mirroredPairs = {'(': ')', ')': '(',
+                             '{': '}', '}': '{',
+                             '[': ']', ']': '[',
+                             '<': '>', '>': '<'};
+        var selfPaired = {'\'': true, '"': true, '`': true};
+
+        var character = motionArgs.selectedCharacter;
+        // 'b' refers to  '()' block.
+        // 'B' refers to  '{}' block.
+        if (character == 'b') {
+          character = '(';
+        } else if (character == 'B') {
+          character = '{';
+        }
+
+        // Inclusive is the difference between a and i
+        // TODO: Instead of using the additional text object map to perform text
+        //     object operations, merge the map into the defaultKeyMap and use
+        //     motionArgs to define behavior. Define separate entries for 'aw',
+        //     'iw', 'a[', 'i[', etc.
+        var inclusive = !motionArgs.textObjectInner;
+
+        var tmp;
+        if (mirroredPairs[character]) {
+          tmp = selectCompanionObject(cm, head, character, inclusive);
+        } else if (selfPaired[character]) {
+          tmp = findBeginningAndEnd(cm, head, character, inclusive);
+        } else if (character === 'W') {
+          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
+                                                     true /** bigWord */);
+        } else if (character === 'w') {
+          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
+                                                     false /** bigWord */);
+        } else if (character === 'p') {
+          tmp = findParagraph(cm, head, motionArgs.repeat, 0, inclusive);
+          motionArgs.linewise = true;
+          if (vim.visualMode) {
+            if (!vim.visualLine) { vim.visualLine = true; }
+          } else {
+            var operatorArgs = vim.inputState.operatorArgs;
+            if (operatorArgs) { operatorArgs.linewise = true; }
+            tmp.end.line--;
+          }
+        } else {
+          // No text object defined for this, don't move.
+          return null;
+        }
+
+        if (!cm.state.vim.visualMode) {
+          return [tmp.start, tmp.end];
+        } else {
+          return expandSelection(cm, tmp.start, tmp.end);
+        }
+      },
+
+      repeatLastCharacterSearch: function(cm, head, motionArgs) {
+        var lastSearch = vimGlobalState.lastCharacterSearch;
+        var repeat = motionArgs.repeat;
+        var forward = motionArgs.forward === lastSearch.forward;
+        var increment = (lastSearch.increment ? 1 : 0) * (forward ? -1 : 1);
+        cm.moveH(-increment, 'char');
+        motionArgs.inclusive = forward ? true : false;
+        var curEnd = moveToCharacter(cm, repeat, forward, lastSearch.selectedCharacter);
+        if (!curEnd) {
+          cm.moveH(increment, 'char');
+          return head;
+        }
+        curEnd.ch += increment;
+        return curEnd;
+      }
+    };
+
+    function defineMotion(name, fn) {
+      motions[name] = fn;
+    }
+
+    function fillArray(val, times) {
+      var arr = [];
+      for (var i = 0; i < times; i++) {
+        arr.push(val);
+      }
+      return arr;
+    }
+    /**
+     * An operator acts on a text selection. It receives the list of selections
+     * as input. The corresponding CodeMirror selection is guaranteed to
+    * match the input selection.
+     */
+    var operators = {
+      change: function(cm, args, ranges) {
+        var finalHead, text;
+        var vim = cm.state.vim;
+        var anchor = ranges[0].anchor,
+            head = ranges[0].head;
+        if (!vim.visualMode) {
+          text = cm.getRange(anchor, head);
+          var lastState = vim.lastEditInputState || {};
+          if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
+            // Exclude trailing whitespace if the range is not all whitespace.
+            var match = (/\s+$/).exec(text);
+            if (match && lastState.motionArgs && lastState.motionArgs.forward) {
+              head = offsetCursor(head, 0, - match[0].length);
+              text = text.slice(0, - match[0].length);
+            }
+          }
+          var prevLineEnd = new Pos(anchor.line - 1, Number.MAX_VALUE);
+          var wasLastLine = cm.firstLine() == cm.lastLine();
+          if (head.line > cm.lastLine() && args.linewise && !wasLastLine) {
+            cm.replaceRange('', prevLineEnd, head);
+          } else {
+            cm.replaceRange('', anchor, head);
+          }
+          if (args.linewise) {
+            // Push the next line back down, if there is a next line.
+            if (!wasLastLine) {
+              cm.setCursor(prevLineEnd);
+              CodeMirror.commands.newlineAndIndent(cm);
+            }
+            // make sure cursor ends up at the end of the line.
+            anchor.ch = Number.MAX_VALUE;
+          }
+          finalHead = anchor;
+        } else if (args.fullLine) {
+            head.ch = Number.MAX_VALUE;
+            head.line--;
+            cm.setSelection(anchor, head)
+            text = cm.getSelection();
+            cm.replaceSelection("");
+            finalHead = anchor;
+        } else {
+          text = cm.getSelection();
+          var replacement = fillArray('', ranges.length);
+          cm.replaceSelections(replacement);
+          finalHead = cursorMin(ranges[0].head, ranges[0].anchor);
+        }
+        vimGlobalState.registerController.pushText(
+            args.registerName, 'change', text,
+            args.linewise, ranges.length > 1);
+        actions.enterInsertMode(cm, {head: finalHead}, cm.state.vim);
+      },
+      // delete is a javascript keyword.
+      'delete': function(cm, args, ranges) {
+        var finalHead, text;
+        var vim = cm.state.vim;
+        if (!vim.visualBlock) {
+          var anchor = ranges[0].anchor,
+              head = ranges[0].head;
+          if (args.linewise &&
+              head.line != cm.firstLine() &&
+              anchor.line == cm.lastLine() &&
+              anchor.line == head.line - 1) {
+            // Special case for dd on last line (and first line).
+            if (anchor.line == cm.firstLine()) {
+              anchor.ch = 0;
+            } else {
+              anchor = Pos(anchor.line - 1, lineLength(cm, anchor.line - 1));
+            }
+          }
+          text = cm.getRange(anchor, head);
+          cm.replaceRange('', anchor, head);
+          finalHead = anchor;
+          if (args.linewise) {
+            finalHead = motions.moveToFirstNonWhiteSpaceCharacter(cm, anchor);
+          }
+        } else {
+          text = cm.getSelection();
+          var replacement = fillArray('', ranges.length);
+          cm.replaceSelections(replacement);
+          finalHead = ranges[0].anchor;
+        }
+        vimGlobalState.registerController.pushText(
+            args.registerName, 'delete', text,
+            args.linewise, vim.visualBlock);
+        return clipCursorToContent(cm, finalHead);
+      },
+      indent: function(cm, args, ranges) {
+        var vim = cm.state.vim;
+        var startLine = ranges[0].anchor.line;
+        var endLine = vim.visualBlock ?
+          ranges[ranges.length - 1].anchor.line :
+          ranges[0].head.line;
+        // In visual mode, n> shifts the selection right n times, instead of
+        // shifting n lines right once.
+        var repeat = (vim.visualMode) ? args.repeat : 1;
+        if (args.linewise) {
+          // The only way to delete a newline is to delete until the start of
+          // the next line, so in linewise mode evalInput will include the next
+          // line. We don't want this in indent, so we go back a line.
+          endLine--;
+        }
+        for (var i = startLine; i <= endLine; i++) {
+          for (var j = 0; j < repeat; j++) {
+            cm.indentLine(i, args.indentRight);
+          }
+        }
+        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
+      },
+      indentAuto: function(cm, _args, ranges) {
+        cm.execCommand("indentAuto");
+        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
+      },
+      changeCase: function(cm, args, ranges, oldAnchor, newHead) {
+        var selections = cm.getSelections();
+        var swapped = [];
+        var toLower = args.toLower;
+        for (var j = 0; j < selections.length; j++) {
+          var toSwap = selections[j];
+          var text = '';
+          if (toLower === true) {
+            text = toSwap.toLowerCase();
+          } else if (toLower === false) {
+            text = toSwap.toUpperCase();
+          } else {
+            for (var i = 0; i < toSwap.length; i++) {
+              var character = toSwap.charAt(i);
+              text += isUpperCase(character) ? character.toLowerCase() :
+                  character.toUpperCase();
+            }
+          }
+          swapped.push(text);
+        }
+        cm.replaceSelections(swapped);
+        if (args.shouldMoveCursor){
+          return newHead;
+        } else if (!cm.state.vim.visualMode && args.linewise && ranges[0].anchor.line + 1 == ranges[0].head.line) {
+          return motions.moveToFirstNonWhiteSpaceCharacter(cm, oldAnchor);
+        } else if (args.linewise){
+          return oldAnchor;
+        } else {
+          return cursorMin(ranges[0].anchor, ranges[0].head);
+        }
+      },
+      yank: function(cm, args, ranges, oldAnchor) {
+        var vim = cm.state.vim;
+        var text = cm.getSelection();
+        var endPos = vim.visualMode
+          ? cursorMin(vim.sel.anchor, vim.sel.head, ranges[0].head, ranges[0].anchor)
+          : oldAnchor;
+        vimGlobalState.registerController.pushText(
+            args.registerName, 'yank',
+            text, args.linewise, vim.visualBlock);
+        return endPos;
+      }
+    };
+
+    function defineOperator(name, fn) {
+      operators[name] = fn;
+    }
+
+    var actions = {
+      jumpListWalk: function(cm, actionArgs, vim) {
+        if (vim.visualMode) {
+          return;
+        }
+        var repeat = actionArgs.repeat;
+        var forward = actionArgs.forward;
+        var jumpList = vimGlobalState.jumpList;
+
+        var mark = jumpList.move(cm, forward ? repeat : -repeat);
+        var markPos = mark ? mark.find() : undefined;
+        markPos = markPos ? markPos : cm.getCursor();
+        cm.setCursor(markPos);
+      },
+      scroll: function(cm, actionArgs, vim) {
+        if (vim.visualMode) {
+          return;
+        }
+        var repeat = actionArgs.repeat || 1;
+        var lineHeight = cm.defaultTextHeight();
+        var top = cm.getScrollInfo().top;
+        var delta = lineHeight * repeat;
+        var newPos = actionArgs.forward ? top + delta : top - delta;
+        var cursor = copyCursor(cm.getCursor());
+        var cursorCoords = cm.charCoords(cursor, 'local');
+        if (actionArgs.forward) {
+          if (newPos > cursorCoords.top) {
+             cursor.line += (newPos - cursorCoords.top) / lineHeight;
+             cursor.line = Math.ceil(cursor.line);
+             cm.setCursor(cursor);
+             cursorCoords = cm.charCoords(cursor, 'local');
+             cm.scrollTo(null, cursorCoords.top);
+          } else {
+             // Cursor stays within bounds.  Just reposition the scroll window.
+             cm.scrollTo(null, newPos);
+          }
+        } else {
+          var newBottom = newPos + cm.getScrollInfo().clientHeight;
+          if (newBottom < cursorCoords.bottom) {
+             cursor.line -= (cursorCoords.bottom - newBottom) / lineHeight;
+             cursor.line = Math.floor(cursor.line);
+             cm.setCursor(cursor);
+             cursorCoords = cm.charCoords(cursor, 'local');
+             cm.scrollTo(
+                 null, cursorCoords.bottom - cm.getScrollInfo().clientHeight);
+          } else {
+             // Cursor stays within bounds.  Just reposition the scroll window.
+             cm.scrollTo(null, newPos);
+          }
+        }
+      },
+      scrollToCursor: function(cm, actionArgs) {
+        var lineNum = cm.getCursor().line;
+        var charCoords = cm.charCoords(Pos(lineNum, 0), 'local');
+        var height = cm.getScrollInfo().clientHeight;
+        var y = charCoords.top;
+        var lineHeight = charCoords.bottom - y;
+        switch (actionArgs.position) {
+          case 'center': y = y - (height / 2) + lineHeight;
+            break;
+          case 'bottom': y = y - height + lineHeight;
+            break;
+        }
+        cm.scrollTo(null, y);
+      },
+      replayMacro: function(cm, actionArgs, vim) {
+        var registerName = actionArgs.selectedCharacter;
+        var repeat = actionArgs.repeat;
+        var macroModeState = vimGlobalState.macroModeState;
+        if (registerName == '@') {
+          registerName = macroModeState.latestRegister;
+        } else {
+          macroModeState.latestRegister = registerName;
+        }
+        while(repeat--){
+          executeMacroRegister(cm, vim, macroModeState, registerName);
+        }
+      },
+      enterMacroRecordMode: function(cm, actionArgs) {
+        var macroModeState = vimGlobalState.macroModeState;
+        var registerName = actionArgs.selectedCharacter;
+        if (vimGlobalState.registerController.isValidRegister(registerName)) {
+          macroModeState.enterMacroRecordMode(cm, registerName);
+        }
+      },
+      toggleOverwrite: function(cm) {
+        if (!cm.state.overwrite) {
+          cm.toggleOverwrite(true);
+          cm.setOption('keyMap', 'vim-replace');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
+        } else {
+          cm.toggleOverwrite(false);
+          cm.setOption('keyMap', 'vim-insert');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
+        }
+      },
+      enterInsertMode: function(cm, actionArgs, vim) {
+        if (cm.getOption('readOnly')) { return; }
+        vim.insertMode = true;
+        vim.insertModeRepeat = actionArgs && actionArgs.repeat || 1;
+        var insertAt = (actionArgs) ? actionArgs.insertAt : null;
+        var sel = vim.sel;
+        var head = actionArgs.head || cm.getCursor('head');
+        var height = cm.listSelections().length;
+        if (insertAt == 'eol') {
+          head = Pos(head.line, lineLength(cm, head.line));
+        } else if (insertAt == 'bol') {
+          head = Pos(head.line, 0);
+        } else if (insertAt == 'charAfter') {
+          head = offsetCursor(head, 0, 1);
+        } else if (insertAt == 'firstNonBlank') {
+          head = motions.moveToFirstNonWhiteSpaceCharacter(cm, head);
+        } else if (insertAt == 'startOfSelectedArea') {
+          if (!vim.visualMode)
+              return;
+          if (!vim.visualBlock) {
+            if (sel.head.line < sel.anchor.line) {
+              head = sel.head;
+            } else {
+              head = Pos(sel.anchor.line, 0);
+            }
+          } else {
+            head = Pos(
+                Math.min(sel.head.line, sel.anchor.line),
+                Math.min(sel.head.ch, sel.anchor.ch));
+            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
+          }
+        } else if (insertAt == 'endOfSelectedArea') {
+            if (!vim.visualMode)
+              return;
+          if (!vim.visualBlock) {
+            if (sel.head.line >= sel.anchor.line) {
+              head = offsetCursor(sel.head, 0, 1);
+            } else {
+              head = Pos(sel.anchor.line, 0);
+            }
+          } else {
+            head = Pos(
+                Math.min(sel.head.line, sel.anchor.line),
+                Math.max(sel.head.ch + 1, sel.anchor.ch));
+            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
+          }
+        } else if (insertAt == 'inplace') {
+          if (vim.visualMode){
+            return;
+          }
+        } else if (insertAt == 'lastEdit') {
+          head = getLastEditPos(cm) || head;
+        }
+        cm.setOption('disableInput', false);
+        if (actionArgs && actionArgs.replace) {
+          // Handle Replace-mode as a special case of insert mode.
+          cm.toggleOverwrite(true);
+          cm.setOption('keyMap', 'vim-replace');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
+        } else {
+          cm.toggleOverwrite(false);
+          cm.setOption('keyMap', 'vim-insert');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
+        }
+        if (!vimGlobalState.macroModeState.isPlaying) {
+          // Only record if not replaying.
+          cm.on('change', onChange);
+          CodeMirror.on(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
+        }
+        if (vim.visualMode) {
+          exitVisualMode(cm);
+        }
+        selectForInsert(cm, head, height);
+      },
+      toggleVisualMode: function(cm, actionArgs, vim) {
+        var repeat = actionArgs.repeat;
+        var anchor = cm.getCursor();
+        var head;
+        // TODO: The repeat should actually select number of characters/lines
+        //     equal to the repeat times the size of the previous visual
+        //     operation.
+        if (!vim.visualMode) {
+          // Entering visual mode
+          vim.visualMode = true;
+          vim.visualLine = !!actionArgs.linewise;
+          vim.visualBlock = !!actionArgs.blockwise;
+          head = clipCursorToContent(
+              cm, Pos(anchor.line, anchor.ch + repeat - 1));
+          vim.sel = {
+            anchor: anchor,
+            head: head
+          };
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
+          updateCmSelection(cm);
+          updateMark(cm, vim, '<', cursorMin(anchor, head));
+          updateMark(cm, vim, '>', cursorMax(anchor, head));
+        } else if (vim.visualLine ^ actionArgs.linewise ||
+            vim.visualBlock ^ actionArgs.blockwise) {
+          // Toggling between modes
+          vim.visualLine = !!actionArgs.linewise;
+          vim.visualBlock = !!actionArgs.blockwise;
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
+          updateCmSelection(cm);
+        } else {
+          exitVisualMode(cm);
+        }
+      },
+      reselectLastSelection: function(cm, _actionArgs, vim) {
+        var lastSelection = vim.lastSelection;
+        if (vim.visualMode) {
+          updateLastSelection(cm, vim);
+        }
+        if (lastSelection) {
+          var anchor = lastSelection.anchorMark.find();
+          var head = lastSelection.headMark.find();
+          if (!anchor || !head) {
+            // If the marks have been destroyed due to edits, do nothing.
+            return;
+          }
+          vim.sel = {
+            anchor: anchor,
+            head: head
+          };
+          vim.visualMode = true;
+          vim.visualLine = lastSelection.visualLine;
+          vim.visualBlock = lastSelection.visualBlock;
+          updateCmSelection(cm);
+          updateMark(cm, vim, '<', cursorMin(anchor, head));
+          updateMark(cm, vim, '>', cursorMax(anchor, head));
+          CodeMirror.signal(cm, 'vim-mode-change', {
+            mode: 'visual',
+            subMode: vim.visualLine ? 'linewise' :
+                     vim.visualBlock ? 'blockwise' : ''});
+        }
+      },
+      joinLines: function(cm, actionArgs, vim) {
+        var curStart, curEnd;
+        if (vim.visualMode) {
+          curStart = cm.getCursor('anchor');
+          curEnd = cm.getCursor('head');
+          if (cursorIsBefore(curEnd, curStart)) {
+            var tmp = curEnd;
+            curEnd = curStart;
+            curStart = tmp;
+          }
+          curEnd.ch = lineLength(cm, curEnd.line) - 1;
+        } else {
+          // Repeat is the number of lines to join. Minimum 2 lines.
+          var repeat = Math.max(actionArgs.repeat, 2);
+          curStart = cm.getCursor();
+          curEnd = clipCursorToContent(cm, Pos(curStart.line + repeat - 1,
+                                               Infinity));
+        }
+        var finalCh = 0;
+        for (var i = curStart.line; i < curEnd.line; i++) {
+          finalCh = lineLength(cm, curStart.line);
+          var tmp = Pos(curStart.line + 1,
+                        lineLength(cm, curStart.line + 1));
+          var text = cm.getRange(curStart, tmp);
+          text = actionArgs.keepSpaces
+            ? text.replace(/\n\r?/g, '')
+            : text.replace(/\n\s*/g, ' ');
+          cm.replaceRange(text, curStart, tmp);
+        }
+        var curFinalPos = Pos(curStart.line, finalCh);
+        if (vim.visualMode) {
+          exitVisualMode(cm, false);
+        }
+        cm.setCursor(curFinalPos);
+      },
+      newLineAndEnterInsertMode: function(cm, actionArgs, vim) {
+        vim.insertMode = true;
+        var insertAt = copyCursor(cm.getCursor());
+        if (insertAt.line === cm.firstLine() && !actionArgs.after) {
+          // Special case for inserting newline before start of document.
+          cm.replaceRange('\n', Pos(cm.firstLine(), 0));
+          cm.setCursor(cm.firstLine(), 0);
+        } else {
+          insertAt.line = (actionArgs.after) ? insertAt.line :
+              insertAt.line - 1;
+          insertAt.ch = lineLength(cm, insertAt.line);
+          cm.setCursor(insertAt);
+          var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
+              CodeMirror.commands.newlineAndIndent;
+          newlineFn(cm);
+        }
+        this.enterInsertMode(cm, { repeat: actionArgs.repeat }, vim);
+      },
+      paste: function(cm, actionArgs, vim) {
+        var cur = copyCursor(cm.getCursor());
+        var register = vimGlobalState.registerController.getRegister(
+            actionArgs.registerName);
+        var text = register.toString();
+        if (!text) {
+          return;
+        }
+        if (actionArgs.matchIndent) {
+          var tabSize = cm.getOption("tabSize");
+          // length that considers tabs and tabSize
+          var whitespaceLength = function(str) {
+            var tabs = (str.split("\t").length - 1);
+            var spaces = (str.split(" ").length - 1);
+            return tabs * tabSize + spaces * 1;
+          };
+          var currentLine = cm.getLine(cm.getCursor().line);
+          var indent = whitespaceLength(currentLine.match(/^\s*/)[0]);
+          // chomp last newline b/c don't want it to match /^\s*/gm
+          var chompedText = text.replace(/\n$/, '');
+          var wasChomped = text !== chompedText;
+          var firstIndent = whitespaceLength(text.match(/^\s*/)[0]);
+          var text = chompedText.replace(/^\s*/gm, function(wspace) {
+            var newIndent = indent + (whitespaceLength(wspace) - firstIndent);
+            if (newIndent < 0) {
+              return "";
+            }
+            else if (cm.getOption("indentWithTabs")) {
+              var quotient = Math.floor(newIndent / tabSize);
+              return Array(quotient + 1).join('\t');
+            }
+            else {
+              return Array(newIndent + 1).join(' ');
+            }
+          });
+          text += wasChomped ? "\n" : "";
+        }
+        if (actionArgs.repeat > 1) {
+          var text = Array(actionArgs.repeat + 1).join(text);
+        }
+        var linewise = register.linewise;
+        var blockwise = register.blockwise;
+        if (blockwise) {
+          text = text.split('\n');
+          if (linewise) {
+              text.pop();
+          }
+          for (var i = 0; i < text.length; i++) {
+            text[i] = (text[i] == '') ? ' ' : text[i];
+          }
+          cur.ch += actionArgs.after ? 1 : 0;
+          cur.ch = Math.min(lineLength(cm, cur.line), cur.ch);
+        } else if (linewise) {
+          if(vim.visualMode) {
+            text = vim.visualLine ? text.slice(0, -1) : '\n' + text.slice(0, text.length - 1) + '\n';
+          } else if (actionArgs.after) {
+            // Move the newline at the end to the start instead, and paste just
+            // before the newline character of the line we are on right now.
+            text = '\n' + text.slice(0, text.length - 1);
+            cur.ch = lineLength(cm, cur.line);
+          } else {
+            cur.ch = 0;
+          }
+        } else {
+          cur.ch += actionArgs.after ? 1 : 0;
+        }
+        var curPosFinal;
+        var idx;
+        if (vim.visualMode) {
+          //  save the pasted text for reselection if the need arises
+          vim.lastPastedText = text;
+          var lastSelectionCurEnd;
+          var selectedArea = getSelectedAreaRange(cm, vim);
+          var selectionStart = selectedArea[0];
+          var selectionEnd = selectedArea[1];
+          var selectedText = cm.getSelection();
+          var selections = cm.listSelections();
+          var emptyStrings = new Array(selections.length).join('1').split('1');
+          // save the curEnd marker before it get cleared due to cm.replaceRange.
+          if (vim.lastSelection) {
+            lastSelectionCurEnd = vim.lastSelection.headMark.find();
+          }
+          // push the previously selected text to unnamed register
+          vimGlobalState.registerController.unnamedRegister.setText(selectedText);
+          if (blockwise) {
+            // first delete the selected text
+            cm.replaceSelections(emptyStrings);
+            // Set new selections as per the block length of the yanked text
+            selectionEnd = Pos(selectionStart.line + text.length-1, selectionStart.ch);
+            cm.setCursor(selectionStart);
+            selectBlock(cm, selectionEnd);
+            cm.replaceSelections(text);
+            curPosFinal = selectionStart;
+          } else if (vim.visualBlock) {
+            cm.replaceSelections(emptyStrings);
+            cm.setCursor(selectionStart);
+            cm.replaceRange(text, selectionStart, selectionStart);
+            curPosFinal = selectionStart;
+          } else {
+            cm.replaceRange(text, selectionStart, selectionEnd);
+            curPosFinal = cm.posFromIndex(cm.indexFromPos(selectionStart) + text.length - 1);
+          }
+          // restore the the curEnd marker
+          if(lastSelectionCurEnd) {
+            vim.lastSelection.headMark = cm.setBookmark(lastSelectionCurEnd);
+          }
+          if (linewise) {
+            curPosFinal.ch=0;
+          }
+        } else {
+          if (blockwise) {
+            cm.setCursor(cur);
+            for (var i = 0; i < text.length; i++) {
+              var line = cur.line+i;
+              if (line > cm.lastLine()) {
+                cm.replaceRange('\n',  Pos(line, 0));
+              }
+              var lastCh = lineLength(cm, line);
+              if (lastCh < cur.ch) {
+                extendLineToColumn(cm, line, cur.ch);
+              }
+            }
+            cm.setCursor(cur);
+            selectBlock(cm, Pos(cur.line + text.length-1, cur.ch));
+            cm.replaceSelections(text);
+            curPosFinal = cur;
+          } else {
+            cm.replaceRange(text, cur);
+            // Now fine tune the cursor to where we want it.
+            if (linewise && actionArgs.after) {
+              curPosFinal = Pos(
+              cur.line + 1,
+              findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)));
+            } else if (linewise && !actionArgs.after) {
+              curPosFinal = Pos(
+                cur.line,
+                findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)));
+            } else if (!linewise && actionArgs.after) {
+              idx = cm.indexFromPos(cur);
+              curPosFinal = cm.posFromIndex(idx + text.length - 1);
+            } else {
+              idx = cm.indexFromPos(cur);
+              curPosFinal = cm.posFromIndex(idx + text.length);
+            }
+          }
+        }
+        if (vim.visualMode) {
+          exitVisualMode(cm, false);
+        }
+        cm.setCursor(curPosFinal);
+      },
+      undo: function(cm, actionArgs) {
+        cm.operation(function() {
+          repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
+          cm.setCursor(cm.getCursor('anchor'));
+        });
+      },
+      redo: function(cm, actionArgs) {
+        repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
+      },
+      setRegister: function(_cm, actionArgs, vim) {
+        vim.inputState.registerName = actionArgs.selectedCharacter;
+      },
+      setMark: function(cm, actionArgs, vim) {
+        var markName = actionArgs.selectedCharacter;
+        updateMark(cm, vim, markName, cm.getCursor());
+      },
+      replace: function(cm, actionArgs, vim) {
+        var replaceWith = actionArgs.selectedCharacter;
+        var curStart = cm.getCursor();
+        var replaceTo;
+        var curEnd;
+        var selections = cm.listSelections();
+        if (vim.visualMode) {
+          curStart = cm.getCursor('start');
+          curEnd = cm.getCursor('end');
+        } else {
+          var line = cm.getLine(curStart.line);
+          replaceTo = curStart.ch + actionArgs.repeat;
+          if (replaceTo > line.length) {
+            replaceTo=line.length;
+          }
+          curEnd = Pos(curStart.line, replaceTo);
+        }
+        if (replaceWith=='\n') {
+          if (!vim.visualMode) cm.replaceRange('', curStart, curEnd);
+          // special case, where vim help says to replace by just one line-break
+          (CodeMirror.commands.newlineAndIndentContinueComment || CodeMirror.commands.newlineAndIndent)(cm);
+        } else {
+          var replaceWithStr = cm.getRange(curStart, curEnd);
+          //replace all characters in range by selected, but keep linebreaks
+          replaceWithStr = replaceWithStr.replace(/[^\n]/g, replaceWith);
+          if (vim.visualBlock) {
+            // Tabs are split in visua block before replacing
+            var spaces = new Array(cm.getOption("tabSize")+1).join(' ');
+            replaceWithStr = cm.getSelection();
+            replaceWithStr = replaceWithStr.replace(/\t/g, spaces).replace(/[^\n]/g, replaceWith).split('\n');
+            cm.replaceSelections(replaceWithStr);
+          } else {
+            cm.replaceRange(replaceWithStr, curStart, curEnd);
+          }
+          if (vim.visualMode) {
+            curStart = cursorIsBefore(selections[0].anchor, selections[0].head) ?
+                         selections[0].anchor : selections[0].head;
+            cm.setCursor(curStart);
+            exitVisualMode(cm, false);
+          } else {
+            cm.setCursor(offsetCursor(curEnd, 0, -1));
+          }
+        }
+      },
+      incrementNumberToken: function(cm, actionArgs) {
+        var cur = cm.getCursor();
+        var lineStr = cm.getLine(cur.line);
+        var re = /(-?)(?:(0x)([\da-f]+)|(0b|0|)(\d+))/gi;
+        var match;
+        var start;
+        var end;
+        var numberStr;
+        while ((match = re.exec(lineStr)) !== null) {
+          start = match.index;
+          end = start + match[0].length;
+          if (cur.ch < end)break;
+        }
+        if (!actionArgs.backtrack && (end <= cur.ch))return;
+        if (match) {
+          var baseStr = match[2] || match[4]
+          var digits = match[3] || match[5]
+          var increment = actionArgs.increase ? 1 : -1;
+          var base = {'0b': 2, '0': 8, '': 10, '0x': 16}[baseStr.toLowerCase()];
+          var number = parseInt(match[1] + digits, base) + (increment * actionArgs.repeat);
+          numberStr = number.toString(base);
+          var zeroPadding = baseStr ? new Array(digits.length - numberStr.length + 1 + match[1].length).join('0') : ''
+          if (numberStr.charAt(0) === '-') {
+            numberStr = '-' + baseStr + zeroPadding + numberStr.substr(1);
+          } else {
+            numberStr = baseStr + zeroPadding + numberStr;
+          }
+          var from = Pos(cur.line, start);
+          var to = Pos(cur.line, end);
+          cm.replaceRange(numberStr, from, to);
+        } else {
+          return;
+        }
+        cm.setCursor(Pos(cur.line, start + numberStr.length - 1));
+      },
+      repeatLastEdit: function(cm, actionArgs, vim) {
+        var lastEditInputState = vim.lastEditInputState;
+        if (!lastEditInputState) { return; }
+        var repeat = actionArgs.repeat;
+        if (repeat && actionArgs.repeatIsExplicit) {
+          vim.lastEditInputState.repeatOverride = repeat;
+        } else {
+          repeat = vim.lastEditInputState.repeatOverride || repeat;
+        }
+        repeatLastEdit(cm, vim, repeat, false /** repeatForInsert */);
+      },
+      indent: function(cm, actionArgs) {
+        cm.indentLine(cm.getCursor().line, actionArgs.indentRight);
+      },
+      exitInsertMode: exitInsertMode
+    };
+
+    function defineAction(name, fn) {
+      actions[name] = fn;
+    }
+
+    /*
+     * Below are miscellaneous utility functions used by vim.js
+     */
+
+    /**
+     * Clips cursor to ensure that line is within the buffer's range
+     * If includeLineBreak is true, then allow cur.ch == lineLength.
+     */
+    function clipCursorToContent(cm, cur) {
+      var vim = cm.state.vim;
+      var includeLineBreak = vim.insertMode || vim.visualMode;
+      var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
+      var maxCh = lineLength(cm, line) - 1 + !!includeLineBreak;
+      var ch = Math.min(Math.max(0, cur.ch), maxCh);
+      return Pos(line, ch);
+    }
+    function copyArgs(args) {
+      var ret = {};
+      for (var prop in args) {
+        if (args.hasOwnProperty(prop)) {
+          ret[prop] = args[prop];
+        }
+      }
+      return ret;
+    }
+    function offsetCursor(cur, offsetLine, offsetCh) {
+      if (typeof offsetLine === 'object') {
+        offsetCh = offsetLine.ch;
+        offsetLine = offsetLine.line;
+      }
+      return Pos(cur.line + offsetLine, cur.ch + offsetCh);
+    }
+    function commandMatches(keys, keyMap, context, inputState) {
+      // Partial matches are not applied. They inform the key handler
+      // that the current key sequence is a subsequence of a valid key
+      // sequence, so that the key buffer is not cleared.
+      var match, partial = [], full = [];
+      for (var i = 0; i < keyMap.length; i++) {
+        var command = keyMap[i];
+        if (context == 'insert' && command.context != 'insert' ||
+            command.context && command.context != context ||
+            inputState.operator && command.type == 'action' ||
+            !(match = commandMatch(keys, command.keys))) { continue; }
+        if (match == 'partial') { partial.push(command); }
+        if (match == 'full') { full.push(command); }
+      }
+      return {
+        partial: partial.length && partial,
+        full: full.length && full
+      };
+    }
+    function commandMatch(pressed, mapped) {
+      if (mapped.slice(-11) == '<character>') {
+        // Last character matches anything.
+        var prefixLen = mapped.length - 11;
+        var pressedPrefix = pressed.slice(0, prefixLen);
+        var mappedPrefix = mapped.slice(0, prefixLen);
+        return pressedPrefix == mappedPrefix && pressed.length > prefixLen ? 'full' :
+               mappedPrefix.indexOf(pressedPrefix) == 0 ? 'partial' : false;
+      } else {
+        return pressed == mapped ? 'full' :
+               mapped.indexOf(pressed) == 0 ? 'partial' : false;
+      }
+    }
+    function lastChar(keys) {
+      var match = /^.*(<[^>]+>)$/.exec(keys);
+      var selectedCharacter = match ? match[1] : keys.slice(-1);
+      if (selectedCharacter.length > 1){
+        switch(selectedCharacter){
+          case '<CR>':
+            selectedCharacter='\n';
+            break;
+          case '<Space>':
+            selectedCharacter=' ';
+            break;
+          default:
+            selectedCharacter='';
+            break;
+        }
+      }
+      return selectedCharacter;
+    }
+    function repeatFn(cm, fn, repeat) {
+      return function() {
+        for (var i = 0; i < repeat; i++) {
+          fn(cm);
+        }
+      };
+    }
+    function copyCursor(cur) {
+      return Pos(cur.line, cur.ch);
+    }
+    function cursorEqual(cur1, cur2) {
+      return cur1.ch == cur2.ch && cur1.line == cur2.line;
+    }
+    function cursorIsBefore(cur1, cur2) {
+      if (cur1.line < cur2.line) {
+        return true;
+      }
+      if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
+        return true;
+      }
+      return false;
+    }
+    function cursorMin(cur1, cur2) {
+      if (arguments.length > 2) {
+        cur2 = cursorMin.apply(undefined, Array.prototype.slice.call(arguments, 1));
+      }
+      return cursorIsBefore(cur1, cur2) ? cur1 : cur2;
+    }
+    function cursorMax(cur1, cur2) {
+      if (arguments.length > 2) {
+        cur2 = cursorMax.apply(undefined, Array.prototype.slice.call(arguments, 1));
+      }
+      return cursorIsBefore(cur1, cur2) ? cur2 : cur1;
+    }
+    function cursorIsBetween(cur1, cur2, cur3) {
+      // returns true if cur2 is between cur1 and cur3.
+      var cur1before2 = cursorIsBefore(cur1, cur2);
+      var cur2before3 = cursorIsBefore(cur2, cur3);
+      return cur1before2 && cur2before3;
+    }
+    function lineLength(cm, lineNum) {
+      return cm.getLine(lineNum).length;
+    }
+    function trim(s) {
+      if (s.trim) {
+        return s.trim();
+      }
+      return s.replace(/^\s+|\s+$/g, '');
+    }
+    function escapeRegex(s) {
+      return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, '\\$1');
+    }
+    function extendLineToColumn(cm, lineNum, column) {
+      var endCh = lineLength(cm, lineNum);
+      var spaces = new Array(column-endCh+1).join(' ');
+      cm.setCursor(Pos(lineNum, endCh));
+      cm.replaceRange(spaces, cm.getCursor());
+    }
+    // This functions selects a rectangular block
+    // of text with selectionEnd as any of its corner
+    // Height of block:
+    // Difference in selectionEnd.line and first/last selection.line
+    // Width of the block:
+    // Distance between selectionEnd.ch and any(first considered here) selection.ch
+    function selectBlock(cm, selectionEnd) {
+      var selections = [], ranges = cm.listSelections();
+      var head = copyCursor(cm.clipPos(selectionEnd));
+      var isClipped = !cursorEqual(selectionEnd, head);
+      var curHead = cm.getCursor('head');
+      var primIndex = getIndex(ranges, curHead);
+      var wasClipped = cursorEqual(ranges[primIndex].head, ranges[primIndex].anchor);
+      var max = ranges.length - 1;
+      var index = max - primIndex > primIndex ? max : 0;
+      var base = ranges[index].anchor;
+
+      var firstLine = Math.min(base.line, head.line);
+      var lastLine = Math.max(base.line, head.line);
+      var baseCh = base.ch, headCh = head.ch;
+
+      var dir = ranges[index].head.ch - baseCh;
+      var newDir = headCh - baseCh;
+      if (dir > 0 && newDir <= 0) {
+        baseCh++;
+        if (!isClipped) { headCh--; }
+      } else if (dir < 0 && newDir >= 0) {
+        baseCh--;
+        if (!wasClipped) { headCh++; }
+      } else if (dir < 0 && newDir == -1) {
+        baseCh--;
+        headCh++;
+      }
+      for (var line = firstLine; line <= lastLine; line++) {
+        var range = {anchor: new Pos(line, baseCh), head: new Pos(line, headCh)};
+        selections.push(range);
+      }
+      cm.setSelections(selections);
+      selectionEnd.ch = headCh;
+      base.ch = baseCh;
+      return base;
+    }
+    function selectForInsert(cm, head, height) {
+      var sel = [];
+      for (var i = 0; i < height; i++) {
+        var lineHead = offsetCursor(head, i, 0);
+        sel.push({anchor: lineHead, head: lineHead});
+      }
+      cm.setSelections(sel, 0);
+    }
+    // getIndex returns the index of the cursor in the selections.
+    function getIndex(ranges, cursor, end) {
+      for (var i = 0; i < ranges.length; i++) {
+        var atAnchor = end != 'head' && cursorEqual(ranges[i].anchor, cursor);
+        var atHead = end != 'anchor' && cursorEqual(ranges[i].head, cursor);
+        if (atAnchor || atHead) {
+          return i;
+        }
+      }
+      return -1;
+    }
+    function getSelectedAreaRange(cm, vim) {
+      var lastSelection = vim.lastSelection;
+      var getCurrentSelectedAreaRange = function() {
+        var selections = cm.listSelections();
+        var start =  selections[0];
+        var end = selections[selections.length-1];
+        var selectionStart = cursorIsBefore(start.anchor, start.head) ? start.anchor : start.head;
+        var selectionEnd = cursorIsBefore(end.anchor, end.head) ? end.head : end.anchor;
+        return [selectionStart, selectionEnd];
+      };
+      var getLastSelectedAreaRange = function() {
+        var selectionStart = cm.getCursor();
+        var selectionEnd = cm.getCursor();
+        var block = lastSelection.visualBlock;
+        if (block) {
+          var width = block.width;
+          var height = block.height;
+          selectionEnd = Pos(selectionStart.line + height, selectionStart.ch + width);
+          var selections = [];
+          // selectBlock creates a 'proper' rectangular block.
+          // We do not want that in all cases, so we manually set selections.
+          for (var i = selectionStart.line; i < selectionEnd.line; i++) {
+            var anchor = Pos(i, selectionStart.ch);
+            var head = Pos(i, selectionEnd.ch);
+            var range = {anchor: anchor, head: head};
+            selections.push(range);
+          }
+          cm.setSelections(selections);
+        } else {
+          var start = lastSelection.anchorMark.find();
+          var end = lastSelection.headMark.find();
+          var line = end.line - start.line;
+          var ch = end.ch - start.ch;
+          selectionEnd = {line: selectionEnd.line + line, ch: line ? selectionEnd.ch : ch + selectionEnd.ch};
+          if (lastSelection.visualLine) {
+            selectionStart = Pos(selectionStart.line, 0);
+            selectionEnd = Pos(selectionEnd.line, lineLength(cm, selectionEnd.line));
+          }
+          cm.setSelection(selectionStart, selectionEnd);
+        }
+        return [selectionStart, selectionEnd];
+      };
+      if (!vim.visualMode) {
+      // In case of replaying the action.
+        return getLastSelectedAreaRange();
+      } else {
+        return getCurrentSelectedAreaRange();
+      }
+    }
+    // Updates the previous selection with the current selection's values. This
+    // should only be called in visual mode.
+    function updateLastSelection(cm, vim) {
+      var anchor = vim.sel.anchor;
+      var head = vim.sel.head;
+      // To accommodate the effect of lastPastedText in the last selection
+      if (vim.lastPastedText) {
+        head = cm.posFromIndex(cm.indexFromPos(anchor) + vim.lastPastedText.length);
+        vim.lastPastedText = null;
+      }
+      vim.lastSelection = {'anchorMark': cm.setBookmark(anchor),
+                           'headMark': cm.setBookmark(head),
+                           'anchor': copyCursor(anchor),
+                           'head': copyCursor(head),
+                           'visualMode': vim.visualMode,
+                           'visualLine': vim.visualLine,
+                           'visualBlock': vim.visualBlock};
+    }
+    function expandSelection(cm, start, end) {
+      var sel = cm.state.vim.sel;
+      var head = sel.head;
+      var anchor = sel.anchor;
+      var tmp;
+      if (cursorIsBefore(end, start)) {
+        tmp = end;
+        end = start;
+        start = tmp;
+      }
+      if (cursorIsBefore(head, anchor)) {
+        head = cursorMin(start, head);
+        anchor = cursorMax(anchor, end);
+      } else {
+        anchor = cursorMin(start, anchor);
+        head = cursorMax(head, end);
+        head = offsetCursor(head, 0, -1);
+        if (head.ch == -1 && head.line != cm.firstLine()) {
+          head = Pos(head.line - 1, lineLength(cm, head.line - 1));
+        }
+      }
+      return [anchor, head];
+    }
+    /**
+     * Updates the CodeMirror selection to match the provided vim selection.
+     * If no arguments are given, it uses the current vim selection state.
+     */
+    function updateCmSelection(cm, sel, mode) {
+      var vim = cm.state.vim;
+      sel = sel || vim.sel;
+      var mode = mode ||
+        vim.visualLine ? 'line' : vim.visualBlock ? 'block' : 'char';
+      var cmSel = makeCmSelection(cm, sel, mode);
+      cm.setSelections(cmSel.ranges, cmSel.primary);
+      updateFakeCursor(cm);
+    }
+    function makeCmSelection(cm, sel, mode, exclusive) {
+      var head = copyCursor(sel.head);
+      var anchor = copyCursor(sel.anchor);
+      if (mode == 'char') {
+        var headOffset = !exclusive && !cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
+        var anchorOffset = cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
+        head = offsetCursor(sel.head, 0, headOffset);
+        anchor = offsetCursor(sel.anchor, 0, anchorOffset);
+        return {
+          ranges: [{anchor: anchor, head: head}],
+          primary: 0
+        };
+      } else if (mode == 'line') {
+        if (!cursorIsBefore(sel.head, sel.anchor)) {
+          anchor.ch = 0;
+
+          var lastLine = cm.lastLine();
+          if (head.line > lastLine) {
+            head.line = lastLine;
+          }
+          head.ch = lineLength(cm, head.line);
+        } else {
+          head.ch = 0;
+          anchor.ch = lineLength(cm, anchor.line);
+        }
+        return {
+          ranges: [{anchor: anchor, head: head}],
+          primary: 0
+        };
+      } else if (mode == 'block') {
+        var top = Math.min(anchor.line, head.line),
+            left = Math.min(anchor.ch, head.ch),
+            bottom = Math.max(anchor.line, head.line),
+            right = Math.max(anchor.ch, head.ch) + 1;
+        var height = bottom - top + 1;
+        var primary = head.line == top ? 0 : height - 1;
+        var ranges = [];
+        for (var i = 0; i < height; i++) {
+          ranges.push({
+            anchor: Pos(top + i, left),
+            head: Pos(top + i, right)
+          });
+        }
+        return {
+          ranges: ranges,
+          primary: primary
+        };
+      }
+    }
+    function getHead(cm) {
+      var cur = cm.getCursor('head');
+      if (cm.getSelection().length == 1) {
+        // Small corner case when only 1 character is selected. The "real"
+        // head is the left of head and anchor.
+        cur = cursorMin(cur, cm.getCursor('anchor'));
+      }
+      return cur;
+    }
+
+    /**
+     * If moveHead is set to false, the CodeMirror selection will not be
+     * touched. The caller assumes the responsibility of putting the cursor
+    * in the right place.
+     */
+    function exitVisualMode(cm, moveHead) {
+      var vim = cm.state.vim;
+      if (moveHead !== false) {
+        cm.setCursor(clipCursorToContent(cm, vim.sel.head));
+      }
+      updateLastSelection(cm, vim);
+      vim.visualMode = false;
+      vim.visualLine = false;
+      vim.visualBlock = false;
+      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+      clearFakeCursor(vim);
+    }
+
+    // Remove any trailing newlines from the selection. For
+    // example, with the caret at the start of the last word on the line,
+    // 'dw' should word, but not the newline, while 'w' should advance the
+    // caret to the first character of the next line.
+    function clipToLine(cm, curStart, curEnd) {
+      var selection = cm.getRange(curStart, curEnd);
+      // Only clip if the selection ends with trailing newline + whitespace
+      if (/\n\s*$/.test(selection)) {
+        var lines = selection.split('\n');
+        // We know this is all whitespace.
+        lines.pop();
+
+        // Cases:
+        // 1. Last word is an empty line - do not clip the trailing '\n'
+        // 2. Last word is not an empty line - clip the trailing '\n'
+        var line;
+        // Find the line containing the last word, and clip all whitespace up
+        // to it.
+        for (var line = lines.pop(); lines.length > 0 && line && isWhiteSpaceString(line); line = lines.pop()) {
+          curEnd.line--;
+          curEnd.ch = 0;
+        }
+        // If the last word is not an empty line, clip an additional newline
+        if (line) {
+          curEnd.line--;
+          curEnd.ch = lineLength(cm, curEnd.line);
+        } else {
+          curEnd.ch = 0;
+        }
+      }
+    }
+
+    // Expand the selection to line ends.
+    function expandSelectionToLine(_cm, curStart, curEnd) {
+      curStart.ch = 0;
+      curEnd.ch = 0;
+      curEnd.line++;
+    }
+
+    function findFirstNonWhiteSpaceCharacter(text) {
+      if (!text) {
+        return 0;
+      }
+      var firstNonWS = text.search(/\S/);
+      return firstNonWS == -1 ? text.length : firstNonWS;
+    }
+
+    function expandWordUnderCursor(cm, inclusive, _forward, bigWord, noSymbol) {
+      var cur = getHead(cm);
+      var line = cm.getLine(cur.line);
+      var idx = cur.ch;
+
+      // Seek to first word or non-whitespace character, depending on if
+      // noSymbol is true.
+      var test = noSymbol ? wordCharTest[0] : bigWordCharTest [0];
+      while (!test(line.charAt(idx))) {
+        idx++;
+        if (idx >= line.length) { return null; }
+      }
+
+      if (bigWord) {
+        test = bigWordCharTest[0];
+      } else {
+        test = wordCharTest[0];
+        if (!test(line.charAt(idx))) {
+          test = wordCharTest[1];
+        }
+      }
+
+      var end = idx, start = idx;
+      while (test(line.charAt(end)) && end < line.length) { end++; }
+      while (test(line.charAt(start)) && start >= 0) { start--; }
+      start++;
+
+      if (inclusive) {
+        // If present, include all whitespace after word.
+        // Otherwise, include all whitespace before word, except indentation.
+        var wordEnd = end;
+        while (/\s/.test(line.charAt(end)) && end < line.length) { end++; }
+        if (wordEnd == end) {
+          var wordStart = start;
+          while (/\s/.test(line.charAt(start - 1)) && start > 0) { start--; }
+          if (!start) { start = wordStart; }
+        }
+      }
+      return { start: Pos(cur.line, start), end: Pos(cur.line, end) };
+    }
+
+    function recordJumpPosition(cm, oldCur, newCur) {
+      if (!cursorEqual(oldCur, newCur)) {
+        vimGlobalState.jumpList.add(cm, oldCur, newCur);
+      }
+    }
+
+    function recordLastCharacterSearch(increment, args) {
+        vimGlobalState.lastCharacterSearch.increment = increment;
+        vimGlobalState.lastCharacterSearch.forward = args.forward;
+        vimGlobalState.lastCharacterSearch.selectedCharacter = args.selectedCharacter;
+    }
+
+    var symbolToMode = {
+        '(': 'bracket', ')': 'bracket', '{': 'bracket', '}': 'bracket',
+        '[': 'section', ']': 'section',
+        '*': 'comment', '/': 'comment',
+        'm': 'method', 'M': 'method',
+        '#': 'preprocess'
+    };
+    var findSymbolModes = {
+      bracket: {
+        isComplete: function(state) {
+          if (state.nextCh === state.symb) {
+            state.depth++;
+            if (state.depth >= 1)return true;
+          } else if (state.nextCh === state.reverseSymb) {
+            state.depth--;
+          }
+          return false;
+        }
+      },
+      section: {
+        init: function(state) {
+          state.curMoveThrough = true;
+          state.symb = (state.forward ? ']' : '[') === state.symb ? '{' : '}';
+        },
+        isComplete: function(state) {
+          return state.index === 0 && state.nextCh === state.symb;
+        }
+      },
+      comment: {
+        isComplete: function(state) {
+          var found = state.lastCh === '*' && state.nextCh === '/';
+          state.lastCh = state.nextCh;
+          return found;
+        }
+      },
+      // TODO: The original Vim implementation only operates on level 1 and 2.
+      // The current implementation doesn't check for code block level and
+      // therefore it operates on any levels.
+      method: {
+        init: function(state) {
+          state.symb = (state.symb === 'm' ? '{' : '}');
+          state.reverseSymb = state.symb === '{' ? '}' : '{';
+        },
+        isComplete: function(state) {
+          if (state.nextCh === state.symb)return true;
+          return false;
+        }
+      },
+      preprocess: {
+        init: function(state) {
+          state.index = 0;
+        },
+        isComplete: function(state) {
+          if (state.nextCh === '#') {
+            var token = state.lineText.match(/#(\w+)/)[1];
+            if (token === 'endif') {
+              if (state.forward && state.depth === 0) {
+                return true;
+              }
+              state.depth++;
+            } else if (token === 'if') {
+              if (!state.forward && state.depth === 0) {
+                return true;
+              }
+              state.depth--;
+            }
+            if (token === 'else' && state.depth === 0)return true;
+          }
+          return false;
+        }
+      }
+    };
+    function findSymbol(cm, repeat, forward, symb) {
+      var cur = copyCursor(cm.getCursor());
+      var increment = forward ? 1 : -1;
+      var endLine = forward ? cm.lineCount() : -1;
+      var curCh = cur.ch;
+      var line = cur.line;
+      var lineText = cm.getLine(line);
+      var state = {
+        lineText: lineText,
+        nextCh: lineText.charAt(curCh),
+        lastCh: null,
+        index: curCh,
+        symb: symb,
+        reverseSymb: (forward ?  { ')': '(', '}': '{' } : { '(': ')', '{': '}' })[symb],
+        forward: forward,
+        depth: 0,
+        curMoveThrough: false
+      };
+      var mode = symbolToMode[symb];
+      if (!mode)return cur;
+      var init = findSymbolModes[mode].init;
+      var isComplete = findSymbolModes[mode].isComplete;
+      if (init) { init(state); }
+      while (line !== endLine && repeat) {
+        state.index += increment;
+        state.nextCh = state.lineText.charAt(state.index);
+        if (!state.nextCh) {
+          line += increment;
+          state.lineText = cm.getLine(line) || '';
+          if (increment > 0) {
+            state.index = 0;
+          } else {
+            var lineLen = state.lineText.length;
+            state.index = (lineLen > 0) ? (lineLen-1) : 0;
+          }
+          state.nextCh = state.lineText.charAt(state.index);
+        }
+        if (isComplete(state)) {
+          cur.line = line;
+          cur.ch = state.index;
+          repeat--;
+        }
+      }
+      if (state.nextCh || state.curMoveThrough) {
+        return Pos(line, state.index);
+      }
+      return cur;
+    }
+
+    /*
+     * Returns the boundaries of the next word. If the cursor in the middle of
+     * the word, then returns the boundaries of the current word, starting at
+     * the cursor. If the cursor is at the start/end of a word, and we are going
+     * forward/backward, respectively, find the boundaries of the next word.
+     *
+     * @param {CodeMirror} cm CodeMirror object.
+     * @param {Cursor} cur The cursor position.
+     * @param {boolean} forward True to search forward. False to search
+     *     backward.
+     * @param {boolean} bigWord True if punctuation count as part of the word.
+     *     False if only [a-zA-Z0-9] characters count as part of the word.
+     * @param {boolean} emptyLineIsWord True if empty lines should be treated
+     *     as words.
+     * @return {Object{from:number, to:number, line: number}} The boundaries of
+     *     the word, or null if there are no more words.
+     */
+    function findWord(cm, cur, forward, bigWord, emptyLineIsWord) {
+      var lineNum = cur.line;
+      var pos = cur.ch;
+      var line = cm.getLine(lineNum);
+      var dir = forward ? 1 : -1;
+      var charTests = bigWord ? bigWordCharTest: wordCharTest;
+
+      if (emptyLineIsWord && line == '') {
+        lineNum += dir;
+        line = cm.getLine(lineNum);
+        if (!isLine(cm, lineNum)) {
+          return null;
+        }
+        pos = (forward) ? 0 : line.length;
+      }
+
+      while (true) {
+        if (emptyLineIsWord && line == '') {
+          return { from: 0, to: 0, line: lineNum };
+        }
+        var stop = (dir > 0) ? line.length : -1;
+        var wordStart = stop, wordEnd = stop;
+        // Find bounds of next word.
+        while (pos != stop) {
+          var foundWord = false;
+          for (var i = 0; i < charTests.length && !foundWord; ++i) {
+            if (charTests[i](line.charAt(pos))) {
+              wordStart = pos;
+              // Advance to end of word.
+              while (pos != stop && charTests[i](line.charAt(pos))) {
+                pos += dir;
+              }
+              wordEnd = pos;
+              foundWord = wordStart != wordEnd;
+              if (wordStart == cur.ch && lineNum == cur.line &&
+                  wordEnd == wordStart + dir) {
+                // We started at the end of a word. Find the next one.
+                continue;
+              } else {
+                return {
+                  from: Math.min(wordStart, wordEnd + 1),
+                  to: Math.max(wordStart, wordEnd),
+                  line: lineNum };
+              }
+            }
+          }
+          if (!foundWord) {
+            pos += dir;
+          }
+        }
+        // Advance to next/prev line.
+        lineNum += dir;
+        if (!isLine(cm, lineNum)) {
+          return null;
+        }
+        line = cm.getLine(lineNum);
+        pos = (dir > 0) ? 0 : line.length;
+      }
+    }
+
+    /**
+     * @param {CodeMirror} cm CodeMirror object.
+     * @param {Pos} cur The position to start from.
+     * @param {int} repeat Number of words to move past.
+     * @param {boolean} forward True to search forward. False to search
+     *     backward.
+     * @param {boolean} wordEnd True to move to end of word. False to move to
+     *     beginning of word.
+     * @param {boolean} bigWord True if punctuation count as part of the word.
+     *     False if only alphabet characters count as part of the word.
+     * @return {Cursor} The position the cursor should move to.
+     */
+    function moveToWord(cm, cur, repeat, forward, wordEnd, bigWord) {
+      var curStart = copyCursor(cur);
+      var words = [];
+      if (forward && !wordEnd || !forward && wordEnd) {
+        repeat++;
+      }
+      // For 'e', empty lines are not considered words, go figure.
+      var emptyLineIsWord = !(forward && wordEnd);
+      for (var i = 0; i < repeat; i++) {
+        var word = findWord(cm, cur, forward, bigWord, emptyLineIsWord);
+        if (!word) {
+          var eodCh = lineLength(cm, cm.lastLine());
+          words.push(forward
+              ? {line: cm.lastLine(), from: eodCh, to: eodCh}
+              : {line: 0, from: 0, to: 0});
+          break;
+        }
+        words.push(word);
+        cur = Pos(word.line, forward ? (word.to - 1) : word.from);
+      }
+      var shortCircuit = words.length != repeat;
+      var firstWord = words[0];
+      var lastWord = words.pop();
+      if (forward && !wordEnd) {
+        // w
+        if (!shortCircuit && (firstWord.from != curStart.ch || firstWord.line != curStart.line)) {
+          // We did not start in the middle of a word. Discard the extra word at the end.
+          lastWord = words.pop();
+        }
+        return Pos(lastWord.line, lastWord.from);
+      } else if (forward && wordEnd) {
+        return Pos(lastWord.line, lastWord.to - 1);
+      } else if (!forward && wordEnd) {
+        // ge
+        if (!shortCircuit && (firstWord.to != curStart.ch || firstWord.line != curStart.line)) {
+          // We did not start in the middle of a word. Discard the extra word at the end.
+          lastWord = words.pop();
+        }
+        return Pos(lastWord.line, lastWord.to);
+      } else {
+        // b
+        return Pos(lastWord.line, lastWord.from);
+      }
+    }
+
+    function moveToCharacter(cm, repeat, forward, character) {
+      var cur = cm.getCursor();
+      var start = cur.ch;
+      var idx;
+      for (var i = 0; i < repeat; i ++) {
+        var line = cm.getLine(cur.line);
+        idx = charIdxInLine(start, line, character, forward, true);
+        if (idx == -1) {
+          return null;
+        }
+        start = idx;
+      }
+      return Pos(cm.getCursor().line, idx);
+    }
+
+    function moveToColumn(cm, repeat) {
+      // repeat is always >= 1, so repeat - 1 always corresponds
+      // to the column we want to go to.
+      var line = cm.getCursor().line;
+      return clipCursorToContent(cm, Pos(line, repeat - 1));
+    }
+
+    function updateMark(cm, vim, markName, pos) {
+      if (!inArray(markName, validMarks)) {
+        return;
+      }
+      if (vim.marks[markName]) {
+        vim.marks[markName].clear();
+      }
+      vim.marks[markName] = cm.setBookmark(pos);
+    }
+
+    function charIdxInLine(start, line, character, forward, includeChar) {
+      // Search for char in line.
+      // motion_options: {forward, includeChar}
+      // If includeChar = true, include it too.
+      // If forward = true, search forward, else search backwards.
+      // If char is not found on this line, do nothing
+      var idx;
+      if (forward) {
+        idx = line.indexOf(character, start + 1);
+        if (idx != -1 && !includeChar) {
+          idx -= 1;
+        }
+      } else {
+        idx = line.lastIndexOf(character, start - 1);
+        if (idx != -1 && !includeChar) {
+          idx += 1;
+        }
+      }
+      return idx;
+    }
+
+    function findParagraph(cm, head, repeat, dir, inclusive) {
+      var line = head.line;
+      var min = cm.firstLine();
+      var max = cm.lastLine();
+      var start, end, i = line;
+      function isEmpty(i) { return !cm.getLine(i); }
+      function isBoundary(i, dir, any) {
+        if (any) { return isEmpty(i) != isEmpty(i + dir); }
+        return !isEmpty(i) && isEmpty(i + dir);
+      }
+      if (dir) {
+        while (min <= i && i <= max && repeat > 0) {
+          if (isBoundary(i, dir)) { repeat--; }
+          i += dir;
+        }
+        return new Pos(i, 0);
+      }
+
+      var vim = cm.state.vim;
+      if (vim.visualLine && isBoundary(line, 1, true)) {
+        var anchor = vim.sel.anchor;
+        if (isBoundary(anchor.line, -1, true)) {
+          if (!inclusive || anchor.line != line) {
+            line += 1;
+          }
+        }
+      }
+      var startState = isEmpty(line);
+      for (i = line; i <= max && repeat; i++) {
+        if (isBoundary(i, 1, true)) {
+          if (!inclusive || isEmpty(i) != startState) {
+            repeat--;
+          }
+        }
+      }
+      end = new Pos(i, 0);
+      // select boundary before paragraph for the last one
+      if (i > max && !startState) { startState = true; }
+      else { inclusive = false; }
+      for (i = line; i > min; i--) {
+        if (!inclusive || isEmpty(i) == startState || i == line) {
+          if (isBoundary(i, -1, true)) { break; }
+        }
+      }
+      start = new Pos(i, 0);
+      return { start: start, end: end };
+    }
+
+    function findSentence(cm, cur, repeat, dir) {
+
+      /*
+        Takes an index object
+        {
+          line: the line string,
+          ln: line number,
+          pos: index in line,
+          dir: direction of traversal (-1 or 1)
+        }
+        and modifies the line, ln, and pos members to represent the
+        next valid position or sets them to null if there are
+        no more valid positions.
+       */
+      function nextChar(cm, idx) {
+        if (idx.pos + idx.dir < 0 || idx.pos + idx.dir >= idx.line.length) {
+          idx.ln += idx.dir;
+          if (!isLine(cm, idx.ln)) {
+            idx.line = null;
+            idx.ln = null;
+            idx.pos = null;
+            return;
+          }
+          idx.line = cm.getLine(idx.ln);
+          idx.pos = (idx.dir > 0) ? 0 : idx.line.length - 1;
+        }
+        else {
+          idx.pos += idx.dir;
+        }
+      }
+
+      /*
+        Performs one iteration of traversal in forward direction
+        Returns an index object of the new location
+       */
+      function forward(cm, ln, pos, dir) {
+        var line = cm.getLine(ln);
+        var stop = (line === "");
+
+        var curr = {
+          line: line,
+          ln: ln,
+          pos: pos,
+          dir: dir,
+        }
+
+        var last_valid = {
+          ln: curr.ln,
+          pos: curr.pos,
+        }
+
+        var skip_empty_lines = (curr.line === "");
+
+        // Move one step to skip character we start on
+        nextChar(cm, curr);
+
+        while (curr.line !== null) {
+          last_valid.ln = curr.ln;
+          last_valid.pos = curr.pos;
+
+          if (curr.line === "" && !skip_empty_lines) {
+            return { ln: curr.ln, pos: curr.pos, };
+          }
+          else if (stop && curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
+            return { ln: curr.ln, pos: curr.pos, };
+          }
+          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
+            && !stop
+            && (curr.pos === curr.line.length - 1
+              || isWhiteSpaceString(curr.line[curr.pos + 1]))) {
+            stop = true;
+          }
+
+          nextChar(cm, curr);
+        }
+
+        /*
+          Set the position to the last non whitespace character on the last
+          valid line in the case that we reach the end of the document.
+        */
+        var line = cm.getLine(last_valid.ln);
+        last_valid.pos = 0;
+        for(var i = line.length - 1; i >= 0; --i) {
+          if (!isWhiteSpaceString(line[i])) {
+            last_valid.pos = i;
+            break;
+          }
+        }
+
+        return last_valid;
+
+      }
+
+      /*
+        Performs one iteration of traversal in reverse direction
+        Returns an index object of the new location
+       */
+      function reverse(cm, ln, pos, dir) {
+        var line = cm.getLine(ln);
+
+        var curr = {
+          line: line,
+          ln: ln,
+          pos: pos,
+          dir: dir,
+        }
+
+        var last_valid = {
+          ln: curr.ln,
+          pos: null,
+        };
+
+        var skip_empty_lines = (curr.line === "");
+
+        // Move one step to skip character we start on
+        nextChar(cm, curr);
+
+        while (curr.line !== null) {
+
+          if (curr.line === "" && !skip_empty_lines) {
+            if (last_valid.pos !== null) {
+              return last_valid;
+            }
+            else {
+              return { ln: curr.ln, pos: curr.pos };
+            }
+          }
+          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
+              && last_valid.pos !== null
+              && !(curr.ln === last_valid.ln && curr.pos + 1 === last_valid.pos)) {
+            return last_valid;
+          }
+          else if (curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
+            skip_empty_lines = false;
+            last_valid = { ln: curr.ln, pos: curr.pos }
+          }
+
+          nextChar(cm, curr);
+        }
+
+        /*
+          Set the position to the first non whitespace character on the last
+          valid line in the case that we reach the beginning of the document.
+        */
+        var line = cm.getLine(last_valid.ln);
+        last_valid.pos = 0;
+        for(var i = 0; i < line.length; ++i) {
+          if (!isWhiteSpaceString(line[i])) {
+            last_valid.pos = i;
+            break;
+          }
+        }
+        return last_valid;
+      }
+
+      var curr_index = {
+        ln: cur.line,
+        pos: cur.ch,
+      };
+
+      while (repeat > 0) {
+        if (dir < 0) {
+          curr_index = reverse(cm, curr_index.ln, curr_index.pos, dir);
+        }
+        else {
+          curr_index = forward(cm, curr_index.ln, curr_index.pos, dir);
+        }
+        repeat--;
+      }
+
+      return Pos(curr_index.ln, curr_index.pos);
+    }
+
+    // TODO: perhaps this finagling of start and end positions belonds
+    // in codemirror/replaceRange?
+    function selectCompanionObject(cm, head, symb, inclusive) {
+      var cur = head, start, end;
+
+      var bracketRegexp = ({
+        '(': /[()]/, ')': /[()]/,
+        '[': /[[\]]/, ']': /[[\]]/,
+        '{': /[{}]/, '}': /[{}]/,
+        '<': /[<>]/, '>': /[<>]/})[symb];
+      var openSym = ({
+        '(': '(', ')': '(',
+        '[': '[', ']': '[',
+        '{': '{', '}': '{',
+        '<': '<', '>': '<'})[symb];
+      var curChar = cm.getLine(cur.line).charAt(cur.ch);
+      // Due to the behavior of scanForBracket, we need to add an offset if the
+      // cursor is on a matching open bracket.
+      var offset = curChar === openSym ? 1 : 0;
+
+      start = cm.scanForBracket(Pos(cur.line, cur.ch + offset), -1, undefined, {'bracketRegex': bracketRegexp});
+      end = cm.scanForBracket(Pos(cur.line, cur.ch + offset), 1, undefined, {'bracketRegex': bracketRegexp});
+
+      if (!start || !end) {
+        return { start: cur, end: cur };
+      }
+
+      start = start.pos;
+      end = end.pos;
+
+      if ((start.line == end.line && start.ch > end.ch)
+          || (start.line > end.line)) {
+        var tmp = start;
+        start = end;
+        end = tmp;
+      }
+
+      if (inclusive) {
+        end.ch += 1;
+      } else {
+        start.ch += 1;
+      }
+
+      return { start: start, end: end };
+    }
+
+    // Takes in a symbol and a cursor and tries to simulate text objects that
+    // have identical opening and closing symbols
+    // TODO support across multiple lines
+    function findBeginningAndEnd(cm, head, symb, inclusive) {
+      var cur = copyCursor(head);
+      var line = cm.getLine(cur.line);
+      var chars = line.split('');
+      var start, end, i, len;
+      var firstIndex = chars.indexOf(symb);
+
+      // the decision tree is to always look backwards for the beginning first,
+      // but if the cursor is in front of the first instance of the symb,
+      // then move the cursor forward
+      if (cur.ch < firstIndex) {
+        cur.ch = firstIndex;
+        // Why is this line even here???
+        // cm.setCursor(cur.line, firstIndex+1);
+      }
+      // otherwise if the cursor is currently on the closing symbol
+      else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
+        end = cur.ch; // assign end to the current cursor
+        --cur.ch; // make sure to look backwards
+      }
+
+      // if we're currently on the symbol, we've got a start
+      if (chars[cur.ch] == symb && !end) {
+        start = cur.ch + 1; // assign start to ahead of the cursor
+      } else {
+        // go backwards to find the start
+        for (i = cur.ch; i > -1 && !start; i--) {
+          if (chars[i] == symb) {
+            start = i + 1;
+          }
+        }
+      }
+
+      // look forwards for the end symbol
+      if (start && !end) {
+        for (i = start, len = chars.length; i < len && !end; i++) {
+          if (chars[i] == symb) {
+            end = i;
+          }
+        }
+      }
+
+      // nothing found
+      if (!start || !end) {
+        return { start: cur, end: cur };
+      }
+
+      // include the symbols
+      if (inclusive) {
+        --start; ++end;
+      }
+
+      return {
+        start: Pos(cur.line, start),
+        end: Pos(cur.line, end)
+      };
+    }
+
+    // Search functions
+    defineOption('pcre', true, 'boolean');
+    function SearchState() {}
+    SearchState.prototype = {
+      getQuery: function() {
+        return vimGlobalState.query;
+      },
+      setQuery: function(query) {
+        vimGlobalState.query = query;
+      },
+      getOverlay: function() {
+        return this.searchOverlay;
+      },
+      setOverlay: function(overlay) {
+        this.searchOverlay = overlay;
+      },
+      isReversed: function() {
+        return vimGlobalState.isReversed;
+      },
+      setReversed: function(reversed) {
+        vimGlobalState.isReversed = reversed;
+      },
+      getScrollbarAnnotate: function() {
+        return this.annotate;
+      },
+      setScrollbarAnnotate: function(annotate) {
+        this.annotate = annotate;
+      }
+    };
+    function getSearchState(cm) {
+      var vim = cm.state.vim;
+      return vim.searchState_ || (vim.searchState_ = new SearchState());
+    }
+    function dialog(cm, template, shortText, onClose, options) {
+      if (cm.openDialog) {
+        cm.openDialog(template, onClose, { bottom: true, value: options.value,
+            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
+            selectValueOnOpen: false});
+      }
+      else {
+        onClose(prompt(shortText, ''));
+      }
+    }
+    function splitBySlash(argString) {
+      return splitBySeparator(argString, '/');
+    }
+
+    function findUnescapedSlashes(argString) {
+      return findUnescapedSeparators(argString, '/');
+    }
+
+    function splitBySeparator(argString, separator) {
+      var slashes = findUnescapedSeparators(argString, separator) || [];
+      if (!slashes.length) return [];
+      var tokens = [];
+      // in case of strings like foo/bar
+      if (slashes[0] !== 0) return;
+      for (var i = 0; i < slashes.length; i++) {
+        if (typeof slashes[i] == 'number')
+          tokens.push(argString.substring(slashes[i] + 1, slashes[i+1]));
+      }
+      return tokens;
+    }
+
+    function findUnescapedSeparators(str, separator) {
+      if (!separator)
+        separator = '/';
+
+      var escapeNextChar = false;
+      var slashes = [];
+      for (var i = 0; i < str.length; i++) {
+        var c = str.charAt(i);
+        if (!escapeNextChar && c == separator) {
+          slashes.push(i);
+        }
+        escapeNextChar = !escapeNextChar && (c == '\\');
+      }
+      return slashes;
+    }
+
+    // Translates a search string from ex (vim) syntax into javascript form.
+    function translateRegex(str) {
+      // When these match, add a '\' if unescaped or remove one if escaped.
+      var specials = '|(){';
+      // Remove, but never add, a '\' for these.
+      var unescape = '}';
+      var escapeNextChar = false;
+      var out = [];
+      for (var i = -1; i < str.length; i++) {
+        var c = str.charAt(i) || '';
+        var n = str.charAt(i+1) || '';
+        var specialComesNext = (n && specials.indexOf(n) != -1);
+        if (escapeNextChar) {
+          if (c !== '\\' || !specialComesNext) {
+            out.push(c);
+          }
+          escapeNextChar = false;
+        } else {
+          if (c === '\\') {
+            escapeNextChar = true;
+            // Treat the unescape list as special for removing, but not adding '\'.
+            if (n && unescape.indexOf(n) != -1) {
+              specialComesNext = true;
+            }
+            // Not passing this test means removing a '\'.
+            if (!specialComesNext || n === '\\') {
+              out.push(c);
+            }
+          } else {
+            out.push(c);
+            if (specialComesNext && n !== '\\') {
+              out.push('\\');
+            }
+          }
+        }
+      }
+      return out.join('');
+    }
+
+    // Translates the replace part of a search and replace from ex (vim) syntax into
+    // javascript form.  Similar to translateRegex, but additionally fixes back references
+    // (translates '\[0..9]' to '$[0..9]') and follows different rules for escaping '$'.
+    var charUnescapes = {'\\n': '\n', '\\r': '\r', '\\t': '\t'};
+    function translateRegexReplace(str) {
+      var escapeNextChar = false;
+      var out = [];
+      for (var i = -1; i < str.length; i++) {
+        var c = str.charAt(i) || '';
+        var n = str.charAt(i+1) || '';
+        if (charUnescapes[c + n]) {
+          out.push(charUnescapes[c+n]);
+          i++;
+        } else if (escapeNextChar) {
+          // At any point in the loop, escapeNextChar is true if the previous
+          // character was a '\' and was not escaped.
+          out.push(c);
+          escapeNextChar = false;
+        } else {
+          if (c === '\\') {
+            escapeNextChar = true;
+            if ((isNumber(n) || n === '$')) {
+              out.push('$');
+            } else if (n !== '/' && n !== '\\') {
+              out.push('\\');
+            }
+          } else {
+            if (c === '$') {
+              out.push('$');
+            }
+            out.push(c);
+            if (n === '/') {
+              out.push('\\');
+            }
+          }
+        }
+      }
+      return out.join('');
+    }
+
+    // Unescape \ and / in the replace part, for PCRE mode.
+    var unescapes = {'\\/': '/', '\\\\': '\\', '\\n': '\n', '\\r': '\r', '\\t': '\t', '\\&':'&'};
+    function unescapeRegexReplace(str) {
+      var stream = new CodeMirror.StringStream(str);
+      var output = [];
+      while (!stream.eol()) {
+        // Search for \.
+        while (stream.peek() && stream.peek() != '\\') {
+          output.push(stream.next());
+        }
+        var matched = false;
+        for (var matcher in unescapes) {
+          if (stream.match(matcher, true)) {
+            matched = true;
+            output.push(unescapes[matcher]);
+            break;
+          }
+        }
+        if (!matched) {
+          // Don't change anything
+          output.push(stream.next());
+        }
+      }
+      return output.join('');
+    }
+
+    /**
+     * Extract the regular expression from the query and return a Regexp object.
+     * Returns null if the query is blank.
+     * If ignoreCase is passed in, the Regexp object will have the 'i' flag set.
+     * If smartCase is passed in, and the query contains upper case letters,
+     *   then ignoreCase is overridden, and the 'i' flag will not be set.
+     * If the query contains the /i in the flag part of the regular expression,
+     *   then both ignoreCase and smartCase are ignored, and 'i' will be passed
+     *   through to the Regex object.
+     */
+    function parseQuery(query, ignoreCase, smartCase) {
+      // First update the last search register
+      var lastSearchRegister = vimGlobalState.registerController.getRegister('/');
+      lastSearchRegister.setText(query);
+      // Check if the query is already a regex.
+      if (query instanceof RegExp) { return query; }
+      // First try to extract regex + flags from the input. If no flags found,
+      // extract just the regex. IE does not accept flags directly defined in
+      // the regex string in the form /regex/flags
+      var slashes = findUnescapedSlashes(query);
+      var regexPart;
+      var forceIgnoreCase;
+      if (!slashes.length) {
+        // Query looks like 'regexp'
+        regexPart = query;
+      } else {
+        // Query looks like 'regexp/...'
+        regexPart = query.substring(0, slashes[0]);
+        var flagsPart = query.substring(slashes[0]);
+        forceIgnoreCase = (flagsPart.indexOf('i') != -1);
+      }
+      if (!regexPart) {
+        return null;
+      }
+      if (!getOption('pcre')) {
+        regexPart = translateRegex(regexPart);
+      }
+      if (smartCase) {
+        ignoreCase = (/^[^A-Z]*$/).test(regexPart);
+      }
+      var regexp = new RegExp(regexPart,
+          (ignoreCase || forceIgnoreCase) ? 'i' : undefined);
+      return regexp;
+    }
+    function showConfirm(cm, text) {
+      if (cm.openNotification) {
+        cm.openNotification('<span style="color: red">' + text + '</span>',
+                            {bottom: true, duration: 5000});
+      } else {
+        alert(text);
+      }
+    }
+    function makePrompt(prefix, desc) {
+      var raw = '<span style="font-family: monospace; white-space: pre">' +
+          (prefix || "") + '<input type="text" autocorrect="off" ' +
+          'autocapitalize="off" spellcheck="false"></span>';
+      if (desc)
+        raw += ' <span style="color: #888">' + desc + '</span>';
+      return raw;
+    }
+    var searchPromptDesc = '(Javascript regexp)';
+    function showPrompt(cm, options) {
+      var shortText = (options.prefix || '') + ' ' + (options.desc || '');
+      var prompt = makePrompt(options.prefix, options.desc);
+      dialog(cm, prompt, shortText, options.onClose, options);
+    }
+    function regexEqual(r1, r2) {
+      if (r1 instanceof RegExp && r2 instanceof RegExp) {
+          var props = ['global', 'multiline', 'ignoreCase', 'source'];
+          for (var i = 0; i < props.length; i++) {
+              var prop = props[i];
+              if (r1[prop] !== r2[prop]) {
+                  return false;
+              }
+          }
+          return true;
+      }
+      return false;
+    }
+    // Returns true if the query is valid.
+    function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
+      if (!rawQuery) {
+        return;
+      }
+      var state = getSearchState(cm);
+      var query = parseQuery(rawQuery, !!ignoreCase, !!smartCase);
+      if (!query) {
+        return;
+      }
+      highlightSearchMatches(cm, query);
+      if (regexEqual(query, state.getQuery())) {
+        return query;
+      }
+      state.setQuery(query);
+      return query;
+    }
+    function searchOverlay(query) {
+      if (query.source.charAt(0) == '^') {
+        var matchSol = true;
+      }
+      return {
+        token: function(stream) {
+          if (matchSol && !stream.sol()) {
+            stream.skipToEnd();
+            return;
+          }
+          var match = stream.match(query, false);
+          if (match) {
+            if (match[0].length == 0) {
+              // Matched empty string, skip to next.
+              stream.next();
+              return 'searching';
+            }
+            if (!stream.sol()) {
+              // Backtrack 1 to match \b
+              stream.backUp(1);
+              if (!query.exec(stream.next() + match[0])) {
+                stream.next();
+                return null;
+              }
+            }
+            stream.match(query);
+            return 'searching';
+          }
+          while (!stream.eol()) {
+            stream.next();
+            if (stream.match(query, false)) break;
+          }
+        },
+        query: query
+      };
+    }
+    var highlightTimeout = 0;
+    function highlightSearchMatches(cm, query) {
+      clearTimeout(highlightTimeout);
+      highlightTimeout = setTimeout(function() {
+        var searchState = getSearchState(cm);
+        var overlay = searchState.getOverlay();
+        if (!overlay || query != overlay.query) {
+          if (overlay) {
+            cm.removeOverlay(overlay);
+          }
+          overlay = searchOverlay(query);
+          cm.addOverlay(overlay);
+          if (cm.showMatchesOnScrollbar) {
+            if (searchState.getScrollbarAnnotate()) {
+              searchState.getScrollbarAnnotate().clear();
+            }
+            searchState.setScrollbarAnnotate(cm.showMatchesOnScrollbar(query));
+          }
+          searchState.setOverlay(overlay);
+        }
+      }, 50);
+    }
+    function findNext(cm, prev, query, repeat) {
+      if (repeat === undefined) { repeat = 1; }
+      return cm.operation(function() {
+        var pos = cm.getCursor();
+        var cursor = cm.getSearchCursor(query, pos);
+        for (var i = 0; i < repeat; i++) {
+          var found = cursor.find(prev);
+          if (i == 0 && found && cursorEqual(cursor.from(), pos)) { found = cursor.find(prev); }
+          if (!found) {
+            // SearchCursor may have returned null because it hit EOF, wrap
+            // around and try again.
+            cursor = cm.getSearchCursor(query,
+                (prev) ? Pos(cm.lastLine()) : Pos(cm.firstLine(), 0) );
+            if (!cursor.find(prev)) {
+              return;
+            }
+          }
+        }
+        return cursor.from();
+      });
+    }
+    function clearSearchHighlight(cm) {
+      var state = getSearchState(cm);
+      cm.removeOverlay(getSearchState(cm).getOverlay());
+      state.setOverlay(null);
+      if (state.getScrollbarAnnotate()) {
+        state.getScrollbarAnnotate().clear();
+        state.setScrollbarAnnotate(null);
+      }
+    }
+    /**
+     * Check if pos is in the specified range, INCLUSIVE.
+     * Range can be specified with 1 or 2 arguments.
+     * If the first range argument is an array, treat it as an array of line
+     * numbers. Match pos against any of the lines.
+     * If the first range argument is a number,
+     *   if there is only 1 range argument, check if pos has the same line
+     *       number
+     *   if there are 2 range arguments, then check if pos is in between the two
+     *       range arguments.
+     */
+    function isInRange(pos, start, end) {
+      if (typeof pos != 'number') {
+        // Assume it is a cursor position. Get the line number.
+        pos = pos.line;
+      }
+      if (start instanceof Array) {
+        return inArray(pos, start);
+      } else {
+        if (end) {
+          return (pos >= start && pos <= end);
+        } else {
+          return pos == start;
+        }
+      }
+    }
+    function getUserVisibleLines(cm) {
+      var scrollInfo = cm.getScrollInfo();
+      var occludeToleranceTop = 6;
+      var occludeToleranceBottom = 10;
+      var from = cm.coordsChar({left:0, top: occludeToleranceTop + scrollInfo.top}, 'local');
+      var bottomY = scrollInfo.clientHeight - occludeToleranceBottom + scrollInfo.top;
+      var to = cm.coordsChar({left:0, top: bottomY}, 'local');
+      return {top: from.line, bottom: to.line};
+    }
+
+    function getMarkPos(cm, vim, markName) {
+      if (markName == '\'' || markName == '`') {
+        return vimGlobalState.jumpList.find(cm, -1) || Pos(0, 0);
+      } else if (markName == '.') {
+        return getLastEditPos(cm);
+      }
+
+      var mark = vim.marks[markName];
+      return mark && mark.find();
+    }
+
+    function getLastEditPos(cm) {
+      var done = cm.doc.history.done;
+      for (var i = done.length; i--;) {
+        if (done[i].changes) {
+          return copyCursor(done[i].changes[0].to);
+        }
+      }
+    }
+
+    var ExCommandDispatcher = function() {
+      this.buildCommandMap_();
+    };
+    ExCommandDispatcher.prototype = {
+      processCommand: function(cm, input, opt_params) {
+        var that = this;
+        cm.operation(function () {
+          cm.curOp.isVimOp = true;
+          that._processCommand(cm, input, opt_params);
+        });
+      },
+      _processCommand: function(cm, input, opt_params) {
+        var vim = cm.state.vim;
+        var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
+        var previousCommand = commandHistoryRegister.toString();
+        if (vim.visualMode) {
+          exitVisualMode(cm);
+        }
+        var inputStream = new CodeMirror.StringStream(input);
+        // update ": with the latest command whether valid or invalid
+        commandHistoryRegister.setText(input);
+        var params = opt_params || {};
+        params.input = input;
+        try {
+          this.parseInput_(cm, inputStream, params);
+        } catch(e) {
+          showConfirm(cm, e);
+          throw e;
+        }
+        var command;
+        var commandName;
+        if (!params.commandName) {
+          // If only a line range is defined, move to the line.
+          if (params.line !== undefined) {
+            commandName = 'move';
+          }
+        } else {
+          command = this.matchCommand_(params.commandName);
+          if (command) {
+            commandName = command.name;
+            if (command.excludeFromCommandHistory) {
+              commandHistoryRegister.setText(previousCommand);
+            }
+            this.parseCommandArgs_(inputStream, params, command);
+            if (command.type == 'exToKey') {
+              // Handle Ex to Key mapping.
+              for (var i = 0; i < command.toKeys.length; i++) {
+                CodeMirror.Vim.handleKey(cm, command.toKeys[i], 'mapping');
+              }
+              return;
+            } else if (command.type == 'exToEx') {
+              // Handle Ex to Ex mapping.
+              this.processCommand(cm, command.toInput);
+              return;
+            }
+          }
+        }
+        if (!commandName) {
+          showConfirm(cm, 'Not an editor command ":' + input + '"');
+          return;
+        }
+        try {
+          exCommands[commandName](cm, params);
+          // Possibly asynchronous commands (e.g. substitute, which might have a
+          // user confirmation), are responsible for calling the callback when
+          // done. All others have it taken care of for them here.
+          if ((!command || !command.possiblyAsync) && params.callback) {
+            params.callback();
+          }
+        } catch(e) {
+          showConfirm(cm, e);
+          throw e;
+        }
+      },
+      parseInput_: function(cm, inputStream, result) {
+        inputStream.eatWhile(':');
+        // Parse range.
+        if (inputStream.eat('%')) {
+          result.line = cm.firstLine();
+          result.lineEnd = cm.lastLine();
+        } else {
+          result.line = this.parseLineSpec_(cm, inputStream);
+          if (result.line !== undefined && inputStream.eat(',')) {
+            result.lineEnd = this.parseLineSpec_(cm, inputStream);
+          }
+        }
+
+        // Parse command name.
+        var commandMatch = inputStream.match(/^(\w+|!!|@@|[!#&*<=>@~])/);
+        if (commandMatch) {
+          result.commandName = commandMatch[1];
+        } else {
+          result.commandName = inputStream.match(/.*/)[0];
+        }
+
+        return result;
+      },
+      parseLineSpec_: function(cm, inputStream) {
+        var numberMatch = inputStream.match(/^(\d+)/);
+        if (numberMatch) {
+          // Absolute line number plus offset (N+M or N-M) is probably a typo,
+          // not something the user actually wanted. (NB: vim does allow this.)
+          return parseInt(numberMatch[1], 10) - 1;
+        }
+        switch (inputStream.next()) {
+          case '.':
+            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
+          case '$':
+            return this.parseLineSpecOffset_(inputStream, cm.lastLine());
+          case '\'':
+            var markName = inputStream.next();
+            var markPos = getMarkPos(cm, cm.state.vim, markName);
+            if (!markPos) throw new Error('Mark not set');
+            return this.parseLineSpecOffset_(inputStream, markPos.line);
+          case '-':
+          case '+':
+            inputStream.backUp(1);
+            // Offset is relative to current line if not otherwise specified.
+            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
+          default:
+            inputStream.backUp(1);
+            return undefined;
+        }
+      },
+      parseLineSpecOffset_: function(inputStream, line) {
+        var offsetMatch = inputStream.match(/^([+-])?(\d+)/);
+        if (offsetMatch) {
+          var offset = parseInt(offsetMatch[2], 10);
+          if (offsetMatch[1] == "-") {
+            line -= offset;
+          } else {
+            line += offset;
+          }
+        }
+        return line;
+      },
+      parseCommandArgs_: function(inputStream, params, command) {
+        if (inputStream.eol()) {
+          return;
+        }
+        params.argString = inputStream.match(/.*/)[0];
+        // Parse command-line arguments
+        var delim = command.argDelimiter || /\s+/;
+        var args = trim(params.argString).split(delim);
+        if (args.length && args[0]) {
+          params.args = args;
+        }
+      },
+      matchCommand_: function(commandName) {
+        // Return the command in the command map that matches the shortest
+        // prefix of the passed in command name. The match is guaranteed to be
+        // unambiguous if the defaultExCommandMap's shortNames are set up
+        // correctly. (see @code{defaultExCommandMap}).
+        for (var i = commandName.length; i > 0; i--) {
+          var prefix = commandName.substring(0, i);
+          if (this.commandMap_[prefix]) {
+            var command = this.commandMap_[prefix];
+            if (command.name.indexOf(commandName) === 0) {
+              return command;
+            }
+          }
+        }
+        return null;
+      },
+      buildCommandMap_: function() {
+        this.commandMap_ = {};
+        for (var i = 0; i < defaultExCommandMap.length; i++) {
+          var command = defaultExCommandMap[i];
+          var key = command.shortName || command.name;
+          this.commandMap_[key] = command;
+        }
+      },
+      map: function(lhs, rhs, ctx) {
+        if (lhs != ':' && lhs.charAt(0) == ':') {
+          if (ctx) { throw Error('Mode not supported for ex mappings'); }
+          var commandName = lhs.substring(1);
+          if (rhs != ':' && rhs.charAt(0) == ':') {
+            // Ex to Ex mapping
+            this.commandMap_[commandName] = {
+              name: commandName,
+              type: 'exToEx',
+              toInput: rhs.substring(1),
+              user: true
+            };
+          } else {
+            // Ex to key mapping
+            this.commandMap_[commandName] = {
+              name: commandName,
+              type: 'exToKey',
+              toKeys: rhs,
+              user: true
+            };
+          }
+        } else {
+          if (rhs != ':' && rhs.charAt(0) == ':') {
+            // Key to Ex mapping.
+            var mapping = {
+              keys: lhs,
+              type: 'keyToEx',
+              exArgs: { input: rhs.substring(1) }
+            };
+            if (ctx) { mapping.context = ctx; }
+            defaultKeymap.unshift(mapping);
+          } else {
+            // Key to key mapping
+            var mapping = {
+              keys: lhs,
+              type: 'keyToKey',
+              toKeys: rhs
+            };
+            if (ctx) { mapping.context = ctx; }
+            defaultKeymap.unshift(mapping);
+          }
+        }
+      },
+      unmap: function(lhs, ctx) {
+        if (lhs != ':' && lhs.charAt(0) == ':') {
+          // Ex to Ex or Ex to key mapping
+          if (ctx) { throw Error('Mode not supported for ex mappings'); }
+          var commandName = lhs.substring(1);
+          if (this.commandMap_[commandName] && this.commandMap_[commandName].user) {
+            delete this.commandMap_[commandName];
+            return;
+          }
+        } else {
+          // Key to Ex or key to key mapping
+          var keys = lhs;
+          for (var i = 0; i < defaultKeymap.length; i++) {
+            if (keys == defaultKeymap[i].keys
+                && defaultKeymap[i].context === ctx) {
+              defaultKeymap.splice(i, 1);
+              return;
+            }
+          }
+        }
+        throw Error('No such mapping.');
+      }
+    };
+
+    var exCommands = {
+      colorscheme: function(cm, params) {
+        if (!params.args || params.args.length < 1) {
+          showConfirm(cm, cm.getOption('theme'));
+          return;
+        }
+        cm.setOption('theme', params.args[0]);
+      },
+      map: function(cm, params, ctx) {
+        var mapArgs = params.args;
+        if (!mapArgs || mapArgs.length < 2) {
+          if (cm) {
+            showConfirm(cm, 'Invalid mapping: ' + params.input);
+          }
+          return;
+        }
+        exCommandDispatcher.map(mapArgs[0], mapArgs[1], ctx);
+      },
+      imap: function(cm, params) { this.map(cm, params, 'insert'); },
+      nmap: function(cm, params) { this.map(cm, params, 'normal'); },
+      vmap: function(cm, params) { this.map(cm, params, 'visual'); },
+      unmap: function(cm, params, ctx) {
+        var mapArgs = params.args;
+        if (!mapArgs || mapArgs.length < 1) {
+          if (cm) {
+            showConfirm(cm, 'No such mapping: ' + params.input);
+          }
+          return;
+        }
+        exCommandDispatcher.unmap(mapArgs[0], ctx);
+      },
+      move: function(cm, params) {
+        commandDispatcher.processCommand(cm, cm.state.vim, {
+            type: 'motion',
+            motion: 'moveToLineOrEdgeOfDocument',
+            motionArgs: { forward: false, explicitRepeat: true,
+              linewise: true },
+            repeatOverride: params.line+1});
+      },
+      set: function(cm, params) {
+        var setArgs = params.args;
+        // Options passed through to the setOption/getOption calls. May be passed in by the
+        // local/global versions of the set command
+        var setCfg = params.setCfg || {};
+        if (!setArgs || setArgs.length < 1) {
+          if (cm) {
+            showConfirm(cm, 'Invalid mapping: ' + params.input);
+          }
+          return;
+        }
+        var expr = setArgs[0].split('=');
+        var optionName = expr[0];
+        var value = expr[1];
+        var forceGet = false;
+
+        if (optionName.charAt(optionName.length - 1) == '?') {
+          // If post-fixed with ?, then the set is actually a get.
+          if (value) { throw Error('Trailing characters: ' + params.argString); }
+          optionName = optionName.substring(0, optionName.length - 1);
+          forceGet = true;
+        }
+        if (value === undefined && optionName.substring(0, 2) == 'no') {
+          // To set boolean options to false, the option name is prefixed with
+          // 'no'.
+          optionName = optionName.substring(2);
+          value = false;
+        }
+
+        var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
+        if (optionIsBoolean && value == undefined) {
+          // Calling set with a boolean option sets it to true.
+          value = true;
+        }
+        // If no value is provided, then we assume this is a get.
+        if (!optionIsBoolean && value === undefined || forceGet) {
+          var oldValue = getOption(optionName, cm, setCfg);
+          if (oldValue instanceof Error) {
+            showConfirm(cm, oldValue.message);
+          } else if (oldValue === true || oldValue === false) {
+            showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
+          } else {
+            showConfirm(cm, '  ' + optionName + '=' + oldValue);
+          }
+        } else {
+          var setOptionReturn = setOption(optionName, value, cm, setCfg);
+          if (setOptionReturn instanceof Error) {
+            showConfirm(cm, setOptionReturn.message);
+          }
+        }
+      },
+      setlocal: function (cm, params) {
+        // setCfg is passed through to setOption
+        params.setCfg = {scope: 'local'};
+        this.set(cm, params);
+      },
+      setglobal: function (cm, params) {
+        // setCfg is passed through to setOption
+        params.setCfg = {scope: 'global'};
+        this.set(cm, params);
+      },
+      registers: function(cm, params) {
+        var regArgs = params.args;
+        var registers = vimGlobalState.registerController.registers;
+        var regInfo = '----------Registers----------<br><br>';
+        if (!regArgs) {
+          for (var registerName in registers) {
+            var text = registers[registerName].toString();
+            if (text.length) {
+              regInfo += '"' + registerName + '    ' + text + '<br>';
+            }
+          }
+        } else {
+          var registerName;
+          regArgs = regArgs.join('');
+          for (var i = 0; i < regArgs.length; i++) {
+            registerName = regArgs.charAt(i);
+            if (!vimGlobalState.registerController.isValidRegister(registerName)) {
+              continue;
+            }
+            var register = registers[registerName] || new Register();
+            regInfo += '"' + registerName + '    ' + register.toString() + '<br>';
+          }
+        }
+        showConfirm(cm, regInfo);
+      },
+      sort: function(cm, params) {
+        var reverse, ignoreCase, unique, number, pattern;
+        function parseArgs() {
+          if (params.argString) {
+            var args = new CodeMirror.StringStream(params.argString);
+            if (args.eat('!')) { reverse = true; }
+            if (args.eol()) { return; }
+            if (!args.eatSpace()) { return 'Invalid arguments'; }
+            var opts = args.match(/([dinuox]+)?\s*(\/.+\/)?\s*/);
+            if (!opts && !args.eol()) { return 'Invalid arguments'; }
+            if (opts[1]) {
+              ignoreCase = opts[1].indexOf('i') != -1;
+              unique = opts[1].indexOf('u') != -1;
+              var decimal = opts[1].indexOf('d') != -1 || opts[1].indexOf('n') != -1 && 1;
+              var hex = opts[1].indexOf('x') != -1 && 1;
+              var octal = opts[1].indexOf('o') != -1 && 1;
+              if (decimal + hex + octal > 1) { return 'Invalid arguments'; }
+              number = decimal && 'decimal' || hex && 'hex' || octal && 'octal';
+            }
+            if (opts[2]) {
+              pattern = new RegExp(opts[2].substr(1, opts[2].length - 2), ignoreCase ? 'i' : '');
+            }
+          }
+        }
+        var err = parseArgs();
+        if (err) {
+          showConfirm(cm, err + ': ' + params.argString);
+          return;
+        }
+        var lineStart = params.line || cm.firstLine();
+        var lineEnd = params.lineEnd || params.line || cm.lastLine();
+        if (lineStart == lineEnd) { return; }
+        var curStart = Pos(lineStart, 0);
+        var curEnd = Pos(lineEnd, lineLength(cm, lineEnd));
+        var text = cm.getRange(curStart, curEnd).split('\n');
+        var numberRegex = pattern ? pattern :
+           (number == 'decimal') ? /(-?)([\d]+)/ :
+           (number == 'hex') ? /(-?)(?:0x)?([0-9a-f]+)/i :
+           (number == 'octal') ? /([0-7]+)/ : null;
+        var radix = (number == 'decimal') ? 10 : (number == 'hex') ? 16 : (number == 'octal') ? 8 : null;
+        var numPart = [], textPart = [];
+        if (number || pattern) {
+          for (var i = 0; i < text.length; i++) {
+            var matchPart = pattern ? text[i].match(pattern) : null;
+            if (matchPart && matchPart[0] != '') {
+              numPart.push(matchPart);
+            } else if (!pattern && numberRegex.exec(text[i])) {
+              numPart.push(text[i]);
+            } else {
+              textPart.push(text[i]);
+            }
+          }
+        } else {
+          textPart = text;
+        }
+        function compareFn(a, b) {
+          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
+          if (ignoreCase) { a = a.toLowerCase(); b = b.toLowerCase(); }
+          var anum = number && numberRegex.exec(a);
+          var bnum = number && numberRegex.exec(b);
+          if (!anum) { return a < b ? -1 : 1; }
+          anum = parseInt((anum[1] + anum[2]).toLowerCase(), radix);
+          bnum = parseInt((bnum[1] + bnum[2]).toLowerCase(), radix);
+          return anum - bnum;
+        }
+        function comparePatternFn(a, b) {
+          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
+          if (ignoreCase) { a[0] = a[0].toLowerCase(); b[0] = b[0].toLowerCase(); }
+          return (a[0] < b[0]) ? -1 : 1;
+        }
+        numPart.sort(pattern ? comparePatternFn : compareFn);
+        if (pattern) {
+          for (var i = 0; i < numPart.length; i++) {
+            numPart[i] = numPart[i].input;
+          }
+        } else if (!number) { textPart.sort(compareFn); }
+        text = (!reverse) ? textPart.concat(numPart) : numPart.concat(textPart);
+        if (unique) { // Remove duplicate lines
+          var textOld = text;
+          var lastLine;
+          text = [];
+          for (var i = 0; i < textOld.length; i++) {
+            if (textOld[i] != lastLine) {
+              text.push(textOld[i]);
+            }
+            lastLine = textOld[i];
+          }
+        }
+        cm.replaceRange(text.join('\n'), curStart, curEnd);
+      },
+      global: function(cm, params) {
+        // a global command is of the form
+        // :[range]g/pattern/[cmd]
+        // argString holds the string /pattern/[cmd]
+        var argString = params.argString;
+        if (!argString) {
+          showConfirm(cm, 'Regular Expression missing from global');
+          return;
+        }
+        // range is specified here
+        var lineStart = (params.line !== undefined) ? params.line : cm.firstLine();
+        var lineEnd = params.lineEnd || params.line || cm.lastLine();
+        // get the tokens from argString
+        var tokens = splitBySlash(argString);
+        var regexPart = argString, cmd;
+        if (tokens.length) {
+          regexPart = tokens[0];
+          cmd = tokens.slice(1, tokens.length).join('/');
+        }
+        if (regexPart) {
+          // If regex part is empty, then use the previous query. Otherwise
+          // use the regex part as the new query.
+          try {
+           updateSearchQuery(cm, regexPart, true /** ignoreCase */,
+             true /** smartCase */);
+          } catch (e) {
+           showConfirm(cm, 'Invalid regex: ' + regexPart);
+           return;
+          }
+        }
+        // now that we have the regexPart, search for regex matches in the
+        // specified range of lines
+        var query = getSearchState(cm).getQuery();
+        var matchedLines = [], content = '';
+        for (var i = lineStart; i <= lineEnd; i++) {
+          var matched = query.test(cm.getLine(i));
+          if (matched) {
+            matchedLines.push(i+1);
+            content+= cm.getLine(i) + '<br>';
+          }
+        }
+        // if there is no [cmd], just display the list of matched lines
+        if (!cmd) {
+          showConfirm(cm, content);
+          return;
+        }
+        var index = 0;
+        var nextCommand = function() {
+          if (index < matchedLines.length) {
+            var command = matchedLines[index] + cmd;
+            exCommandDispatcher.processCommand(cm, command, {
+              callback: nextCommand
+            });
+          }
+          index++;
+        };
+        nextCommand();
+      },
+      substitute: function(cm, params) {
+        if (!cm.getSearchCursor) {
+          throw new Error('Search feature not available. Requires searchcursor.js or ' +
+              'any other getSearchCursor implementation.');
+        }
+        var argString = params.argString;
+        var tokens = argString ? splitBySeparator(argString, argString[0]) : [];
+        var regexPart, replacePart = '', trailing, flagsPart, count;
+        var confirm = false; // Whether to confirm each replace.
+        var global = false; // True to replace all instances on a line, false to replace only 1.
+        if (tokens.length) {
+          regexPart = tokens[0];
+          if (getOption('pcre') && regexPart !== '') {
+              regexPart = new RegExp(regexPart).source; //normalize not escaped characters
+          }
+          replacePart = tokens[1];
+          if (regexPart && regexPart[regexPart.length - 1] === '$') {
+            regexPart = regexPart.slice(0, regexPart.length - 1) + '\\n';
+            replacePart = replacePart ? replacePart + '\n' : '\n';
+          }
+          if (replacePart !== undefined) {
+            if (getOption('pcre')) {
+              replacePart = unescapeRegexReplace(replacePart.replace(/([^\\])&/g,"$1$$&"));
+            } else {
+              replacePart = translateRegexReplace(replacePart);
+            }
+            vimGlobalState.lastSubstituteReplacePart = replacePart;
+          }
+          trailing = tokens[2] ? tokens[2].split(' ') : [];
+        } else {
+          // either the argString is empty or its of the form ' hello/world'
+          // actually splitBySlash returns a list of tokens
+          // only if the string starts with a '/'
+          if (argString && argString.length) {
+            showConfirm(cm, 'Substitutions should be of the form ' +
+                ':s/pattern/replace/');
+            return;
+          }
+        }
+        // After the 3rd slash, we can have flags followed by a space followed
+        // by count.
+        if (trailing) {
+          flagsPart = trailing[0];
+          count = parseInt(trailing[1]);
+          if (flagsPart) {
+            if (flagsPart.indexOf('c') != -1) {
+              confirm = true;
+              flagsPart.replace('c', '');
+            }
+            if (flagsPart.indexOf('g') != -1) {
+              global = true;
+              flagsPart.replace('g', '');
+            }
+            if (getOption('pcre')) {
+               regexPart = regexPart + '/' + flagsPart;
+            } else {
+               regexPart = regexPart.replace(/\//g, "\\/") + '/' + flagsPart;
+            }
+          }
+        }
+        if (regexPart) {
+          // If regex part is empty, then use the previous query. Otherwise use
+          // the regex part as the new query.
+          try {
+            updateSearchQuery(cm, regexPart, true /** ignoreCase */,
+              true /** smartCase */);
+          } catch (e) {
+            showConfirm(cm, 'Invalid regex: ' + regexPart);
+            return;
+          }
+        }
+        replacePart = replacePart || vimGlobalState.lastSubstituteReplacePart;
+        if (replacePart === undefined) {
+          showConfirm(cm, 'No previous substitute regular expression');
+          return;
+        }
+        var state = getSearchState(cm);
+        var query = state.getQuery();
+        var lineStart = (params.line !== undefined) ? params.line : cm.getCursor().line;
+        var lineEnd = params.lineEnd || lineStart;
+        if (lineStart == cm.firstLine() && lineEnd == cm.lastLine()) {
+          lineEnd = Infinity;
+        }
+        if (count) {
+          lineStart = lineEnd;
+          lineEnd = lineStart + count - 1;
+        }
+        var startPos = clipCursorToContent(cm, Pos(lineStart, 0));
+        var cursor = cm.getSearchCursor(query, startPos);
+        doReplace(cm, confirm, global, lineStart, lineEnd, cursor, query, replacePart, params.callback);
+      },
+      redo: CodeMirror.commands.redo,
+      undo: CodeMirror.commands.undo,
+      write: function(cm) {
+        if (CodeMirror.commands.save) {
+          // If a save command is defined, call it.
+          CodeMirror.commands.save(cm);
+        } else if (cm.save) {
+          // Saves to text area if no save command is defined and cm.save() is available.
+          cm.save();
+        }
+      },
+      nohlsearch: function(cm) {
+        clearSearchHighlight(cm);
+      },
+      yank: function (cm) {
+        var cur = copyCursor(cm.getCursor());
+        var line = cur.line;
+        var lineText = cm.getLine(line);
+        vimGlobalState.registerController.pushText(
+          '0', 'yank', lineText, true, true);
+      },
+      delmarks: function(cm, params) {
+        if (!params.argString || !trim(params.argString)) {
+          showConfirm(cm, 'Argument required');
+          return;
+        }
+
+        var state = cm.state.vim;
+        var stream = new CodeMirror.StringStream(trim(params.argString));
+        while (!stream.eol()) {
+          stream.eatSpace();
+
+          // Record the streams position at the beginning of the loop for use
+          // in error messages.
+          var count = stream.pos;
+
+          if (!stream.match(/[a-zA-Z]/, false)) {
+            showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+            return;
+          }
+
+          var sym = stream.next();
+          // Check if this symbol is part of a range
+          if (stream.match('-', true)) {
+            // This symbol is part of a range.
+
+            // The range must terminate at an alphabetic character.
+            if (!stream.match(/[a-zA-Z]/, false)) {
+              showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+              return;
+            }
+
+            var startMark = sym;
+            var finishMark = stream.next();
+            // The range must terminate at an alphabetic character which
+            // shares the same case as the start of the range.
+            if (isLowerCase(startMark) && isLowerCase(finishMark) ||
+                isUpperCase(startMark) && isUpperCase(finishMark)) {
+              var start = startMark.charCodeAt(0);
+              var finish = finishMark.charCodeAt(0);
+              if (start >= finish) {
+                showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
+                return;
+              }
+
+              // Because marks are always ASCII values, and we have
+              // determined that they are the same case, we can use
+              // their char codes to iterate through the defined range.
+              for (var j = 0; j <= finish - start; j++) {
+                var mark = String.fromCharCode(start + j);
+                delete state.marks[mark];
+              }
+            } else {
+              showConfirm(cm, 'Invalid argument: ' + startMark + '-');
+              return;
+            }
+          } else {
+            // This symbol is a valid mark, and is not part of a range.
+            delete state.marks[sym];
+          }
+        }
+      }
+    };
+
+    var exCommandDispatcher = new ExCommandDispatcher();
+
+    /**
+    * @param {CodeMirror} cm CodeMirror instance we are in.
+    * @param {boolean} confirm Whether to confirm each replace.
+    * @param {Cursor} lineStart Line to start replacing from.
+    * @param {Cursor} lineEnd Line to stop replacing at.
+    * @param {RegExp} query Query for performing matches with.
+    * @param {string} replaceWith Text to replace matches with. May contain $1,
+    *     $2, etc for replacing captured groups using Javascript replace.
+    * @param {function()} callback A callback for when the replace is done.
+    */
+    function doReplace(cm, confirm, global, lineStart, lineEnd, searchCursor, query,
+        replaceWith, callback) {
+      // Set up all the functions.
+      cm.state.vim.exMode = true;
+      var done = false;
+      var lastPos = searchCursor.from();
+      function replaceAll() {
+        cm.operation(function() {
+          while (!done) {
+            replace();
+            next();
+          }
+          stop();
+        });
+      }
+      function replace() {
+        var text = cm.getRange(searchCursor.from(), searchCursor.to());
+        var newText = text.replace(query, replaceWith);
+        searchCursor.replace(newText);
+      }
+      function next() {
+        // The below only loops to skip over multiple occurrences on the same
+        // line when 'global' is not true.
+        while(searchCursor.findNext() &&
+              isInRange(searchCursor.from(), lineStart, lineEnd)) {
+          if (!global && lastPos && searchCursor.from().line == lastPos.line) {
+            continue;
+          }
+          cm.scrollIntoView(searchCursor.from(), 30);
+          cm.setSelection(searchCursor.from(), searchCursor.to());
+          lastPos = searchCursor.from();
+          done = false;
+          return;
+        }
+        done = true;
+      }
+      function stop(close) {
+        if (close) { close(); }
+        cm.focus();
+        if (lastPos) {
+          cm.setCursor(lastPos);
+          var vim = cm.state.vim;
+          vim.exMode = false;
+          vim.lastHPos = vim.lastHSPos = lastPos.ch;
+        }
+        if (callback) { callback(); }
+      }
+      function onPromptKeyDown(e, _value, close) {
+        // Swallow all keys.
+        CodeMirror.e_stop(e);
+        var keyName = CodeMirror.keyName(e);
+        switch (keyName) {
+          case 'Y':
+            replace(); next(); break;
+          case 'N':
+            next(); break;
+          case 'A':
+            // replaceAll contains a call to close of its own. We don't want it
+            // to fire too early or multiple times.
+            var savedCallback = callback;
+            callback = undefined;
+            cm.operation(replaceAll);
+            callback = savedCallback;
+            break;
+          case 'L':
+            replace();
+            // fall through and exit.
+          case 'Q':
+          case 'Esc':
+          case 'Ctrl-C':
+          case 'Ctrl-[':
+            stop(close);
+            break;
+        }
+        if (done) { stop(close); }
+        return true;
+      }
+
+      // Actually do replace.
+      next();
+      if (done) {
+        showConfirm(cm, 'No matches for ' + query.source);
+        return;
+      }
+      if (!confirm) {
+        replaceAll();
+        if (callback) { callback(); }
+        return;
+      }
+      showPrompt(cm, {
+        prefix: 'replace with <strong>' + replaceWith + '</strong> (y/n/a/q/l)',
+        onKeyDown: onPromptKeyDown
+      });
+    }
+
+    CodeMirror.keyMap.vim = {
+      attach: attachVimMap,
+      detach: detachVimMap,
+      call: cmKey
+    };
+
+    function exitInsertMode(cm) {
+      var vim = cm.state.vim;
+      var macroModeState = vimGlobalState.macroModeState;
+      var insertModeChangeRegister = vimGlobalState.registerController.getRegister('.');
+      var isPlaying = macroModeState.isPlaying;
+      var lastChange = macroModeState.lastInsertModeChanges;
+      if (!isPlaying) {
+        cm.off('change', onChange);
+        CodeMirror.off(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
+      }
+      if (!isPlaying && vim.insertModeRepeat > 1) {
+        // Perform insert mode repeat for commands like 3,a and 3,o.
+        repeatLastEdit(cm, vim, vim.insertModeRepeat - 1,
+            true /** repeatForInsert */);
+        vim.lastEditInputState.repeatOverride = vim.insertModeRepeat;
+      }
+      delete vim.insertModeRepeat;
+      vim.insertMode = false;
+      cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1);
+      cm.setOption('keyMap', 'vim');
+      cm.setOption('disableInput', true);
+      cm.toggleOverwrite(false); // exit replace mode if we were in it.
+      // update the ". register before exiting insert mode
+      insertModeChangeRegister.setText(lastChange.changes.join(''));
+      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
+      if (macroModeState.isRecording) {
+        logInsertModeChange(macroModeState);
+      }
+    }
+
+    function _mapCommand(command) {
+      defaultKeymap.unshift(command);
+    }
+
+    function mapCommand(keys, type, name, args, extra) {
+      var command = {keys: keys, type: type};
+      command[type] = name;
+      command[type + "Args"] = args;
+      for (var key in extra)
+        command[key] = extra[key];
+      _mapCommand(command);
+    }
+
+    // The timeout in milliseconds for the two-character ESC keymap should be
+    // adjusted according to your typing speed to prevent false positives.
+    defineOption('insertModeEscKeysTimeout', 200, 'number');
+
+    CodeMirror.keyMap['vim-insert'] = {
+      // TODO: override navigation keys so that Esc will cancel automatic
+      // indentation from o, O, i_<CR>
+      fallthrough: ['default'],
+      attach: attachVimMap,
+      detach: detachVimMap,
+      call: cmKey
+    };
+
+    CodeMirror.keyMap['vim-replace'] = {
+      'Backspace': 'goCharLeft',
+      fallthrough: ['vim-insert'],
+      attach: attachVimMap,
+      detach: detachVimMap,
+      call: cmKey
+    };
+
+    function executeMacroRegister(cm, vim, macroModeState, registerName) {
+      var register = vimGlobalState.registerController.getRegister(registerName);
+      if (registerName == ':') {
+        // Read-only register containing last Ex command.
+        if (register.keyBuffer[0]) {
+          exCommandDispatcher.processCommand(cm, register.keyBuffer[0]);
+        }
+        macroModeState.isPlaying = false;
+        return;
+      }
+      var keyBuffer = register.keyBuffer;
+      var imc = 0;
+      macroModeState.isPlaying = true;
+      macroModeState.replaySearchQueries = register.searchQueries.slice(0);
+      for (var i = 0; i < keyBuffer.length; i++) {
+        var text = keyBuffer[i];
+        var match, key;
+        while (text) {
+          // Pull off one command key, which is either a single character
+          // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
+          match = (/<\w+-.+?>|<\w+>|./).exec(text);
+          key = match[0];
+          text = text.substring(match.index + key.length);
+          CodeMirror.Vim.handleKey(cm, key, 'macro');
+          if (vim.insertMode) {
+            var changes = register.insertModeChanges[imc++].changes;
+            vimGlobalState.macroModeState.lastInsertModeChanges.changes =
+                changes;
+            repeatInsertModeChanges(cm, changes, 1);
+            exitInsertMode(cm);
+          }
+        }
+      }
+      macroModeState.isPlaying = false;
+    }
+
+    function logKey(macroModeState, key) {
+      if (macroModeState.isPlaying) { return; }
+      var registerName = macroModeState.latestRegister;
+      var register = vimGlobalState.registerController.getRegister(registerName);
+      if (register) {
+        register.pushText(key);
+      }
+    }
+
+    function logInsertModeChange(macroModeState) {
+      if (macroModeState.isPlaying) { return; }
+      var registerName = macroModeState.latestRegister;
+      var register = vimGlobalState.registerController.getRegister(registerName);
+      if (register && register.pushInsertModeChanges) {
+        register.pushInsertModeChanges(macroModeState.lastInsertModeChanges);
+      }
+    }
+
+    function logSearchQuery(macroModeState, query) {
+      if (macroModeState.isPlaying) { return; }
+      var registerName = macroModeState.latestRegister;
+      var register = vimGlobalState.registerController.getRegister(registerName);
+      if (register && register.pushSearchQuery) {
+        register.pushSearchQuery(query);
+      }
+    }
+
+    /**
+     * Listens for changes made in insert mode.
+     * Should only be active in insert mode.
+     */
+    function onChange(cm, changeObj) {
+      var macroModeState = vimGlobalState.macroModeState;
+      var lastChange = macroModeState.lastInsertModeChanges;
+      if (!macroModeState.isPlaying) {
+        while(changeObj) {
+          lastChange.expectCursorActivityForChange = true;
+          if (lastChange.ignoreCount > 1) {
+            lastChange.ignoreCount--;
+          } else if (changeObj.origin == '+input' || changeObj.origin == 'paste'
+              || changeObj.origin === undefined /* only in testing */) {
+            var selectionCount = cm.listSelections().length;
+            if (selectionCount > 1)
+              lastChange.ignoreCount = selectionCount;
+            var text = changeObj.text.join('\n');
+            if (lastChange.maybeReset) {
+              lastChange.changes = [];
+              lastChange.maybeReset = false;
+            }
+            if (text) {
+              if (cm.state.overwrite && !/\n/.test(text)) {
+                lastChange.changes.push([text]);
+              } else {
+                lastChange.changes.push(text);
+              }
+            }
+          }
+          // Change objects may be chained with next.
+          changeObj = changeObj.next;
+        }
+      }
+    }
+
+    /**
+    * Listens for any kind of cursor activity on CodeMirror.
+    */
+    function onCursorActivity(cm) {
+      var vim = cm.state.vim;
+      if (vim.insertMode) {
+        // Tracking cursor activity in insert mode (for macro support).
+        var macroModeState = vimGlobalState.macroModeState;
+        if (macroModeState.isPlaying) { return; }
+        var lastChange = macroModeState.lastInsertModeChanges;
+        if (lastChange.expectCursorActivityForChange) {
+          lastChange.expectCursorActivityForChange = false;
+        } else {
+          // Cursor moved outside the context of an edit. Reset the change.
+          lastChange.maybeReset = true;
+        }
+      } else if (!cm.curOp.isVimOp) {
+        handleExternalSelection(cm, vim);
+      }
+      if (vim.visualMode) {
+        updateFakeCursor(cm);
+      }
+    }
+    /**
+     * Keeps track of a fake cursor to support visual mode cursor behavior.
+     */
+    function updateFakeCursor(cm) {
+      var className = 'cm-animate-fat-cursor';
+      var vim = cm.state.vim;
+      var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
+      var to = offsetCursor(from, 0, 1);
+      clearFakeCursor(vim);
+      // In visual mode, the cursor may be positioned over EOL.
+      if (from.ch == cm.getLine(from.line).length) {
+        var widget = document.createElement("span");
+        widget.textContent = "\u00a0";
+        widget.className = className;
+        vim.fakeCursorBookmark = cm.setBookmark(from, {widget: widget});
+      } else {
+        vim.fakeCursor = cm.markText(from, to, {className: className});
+      }
+    }
+    function clearFakeCursor(vim) {
+      if (vim.fakeCursor) {
+        vim.fakeCursor.clear();
+        vim.fakeCursor = null;
+      }
+      if (vim.fakeCursorBookmark) {
+        vim.fakeCursorBookmark.clear();
+        vim.fakeCursorBookmark = null;
+      }
+    }
+    function handleExternalSelection(cm, vim) {
+      var anchor = cm.getCursor('anchor');
+      var head = cm.getCursor('head');
+      // Enter or exit visual mode to match mouse selection.
+      if (vim.visualMode && !cm.somethingSelected()) {
+        exitVisualMode(cm, false);
+      } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
+        vim.visualMode = true;
+        vim.visualLine = false;
+        CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
+      }
+      if (vim.visualMode) {
+        // Bind CodeMirror selection model to vim selection model.
+        // Mouse selections are considered visual characterwise.
+        var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
+        var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
+        head = offsetCursor(head, 0, headOffset);
+        anchor = offsetCursor(anchor, 0, anchorOffset);
+        vim.sel = {
+          anchor: anchor,
+          head: head
+        };
+        updateMark(cm, vim, '<', cursorMin(head, anchor));
+        updateMark(cm, vim, '>', cursorMax(head, anchor));
+      } else if (!vim.insertMode) {
+        // Reset lastHPos if selection was modified by something outside of vim mode e.g. by mouse.
+        vim.lastHPos = cm.getCursor().ch;
+      }
+    }
+
+    /** Wrapper for special keys pressed in insert mode */
+    function InsertModeKey(keyName) {
+      this.keyName = keyName;
+    }
+
+    /**
+    * Handles raw key down events from the text area.
+    * - Should only be active in insert mode.
+    * - For recording deletes in insert mode.
+    */
+    function onKeyEventTargetKeyDown(e) {
+      var macroModeState = vimGlobalState.macroModeState;
+      var lastChange = macroModeState.lastInsertModeChanges;
+      var keyName = CodeMirror.keyName(e);
+      if (!keyName) { return; }
+      function onKeyFound() {
+        if (lastChange.maybeReset) {
+          lastChange.changes = [];
+          lastChange.maybeReset = false;
+        }
+        lastChange.changes.push(new InsertModeKey(keyName));
+        return true;
+      }
+      if (keyName.indexOf('Delete') != -1 || keyName.indexOf('Backspace') != -1) {
+        CodeMirror.lookupKey(keyName, 'vim-insert', onKeyFound);
+      }
+    }
+
+    /**
+     * Repeats the last edit, which includes exactly 1 command and at most 1
+     * insert. Operator and motion commands are read from lastEditInputState,
+     * while action commands are read from lastEditActionCommand.
+     *
+     * If repeatForInsert is true, then the function was called by
+     * exitInsertMode to repeat the insert mode changes the user just made. The
+     * corresponding enterInsertMode call was made with a count.
+     */
+    function repeatLastEdit(cm, vim, repeat, repeatForInsert) {
+      var macroModeState = vimGlobalState.macroModeState;
+      macroModeState.isPlaying = true;
+      var isAction = !!vim.lastEditActionCommand;
+      var cachedInputState = vim.inputState;
+      function repeatCommand() {
+        if (isAction) {
+          commandDispatcher.processAction(cm, vim, vim.lastEditActionCommand);
+        } else {
+          commandDispatcher.evalInput(cm, vim);
+        }
+      }
+      function repeatInsert(repeat) {
+        if (macroModeState.lastInsertModeChanges.changes.length > 0) {
+          // For some reason, repeat cw in desktop VIM does not repeat
+          // insert mode changes. Will conform to that behavior.
+          repeat = !vim.lastEditActionCommand ? 1 : repeat;
+          var changeObject = macroModeState.lastInsertModeChanges;
+          repeatInsertModeChanges(cm, changeObject.changes, repeat);
+        }
+      }
+      vim.inputState = vim.lastEditInputState;
+      if (isAction && vim.lastEditActionCommand.interlaceInsertRepeat) {
+        // o and O repeat have to be interlaced with insert repeats so that the
+        // insertions appear on separate lines instead of the last line.
+        for (var i = 0; i < repeat; i++) {
+          repeatCommand();
+          repeatInsert(1);
+        }
+      } else {
+        if (!repeatForInsert) {
+          // Hack to get the cursor to end up at the right place. If I is
+          // repeated in insert mode repeat, cursor will be 1 insert
+          // change set left of where it should be.
+          repeatCommand();
+        }
+        repeatInsert(repeat);
+      }
+      vim.inputState = cachedInputState;
+      if (vim.insertMode && !repeatForInsert) {
+        // Don't exit insert mode twice. If repeatForInsert is set, then we
+        // were called by an exitInsertMode call lower on the stack.
+        exitInsertMode(cm);
+      }
+      macroModeState.isPlaying = false;
+    }
+
+    function repeatInsertModeChanges(cm, changes, repeat) {
+      function keyHandler(binding) {
+        if (typeof binding == 'string') {
+          CodeMirror.commands[binding](cm);
+        } else {
+          binding(cm);
+        }
+        return true;
+      }
+      var head = cm.getCursor('head');
+      var visualBlock = vimGlobalState.macroModeState.lastInsertModeChanges.visualBlock;
+      if (visualBlock) {
+        // Set up block selection again for repeating the changes.
+        selectForInsert(cm, head, visualBlock + 1);
+        repeat = cm.listSelections().length;
+        cm.setCursor(head);
+      }
+      for (var i = 0; i < repeat; i++) {
+        if (visualBlock) {
+          cm.setCursor(offsetCursor(head, i, 0));
+        }
+        for (var j = 0; j < changes.length; j++) {
+          var change = changes[j];
+          if (change instanceof InsertModeKey) {
+            CodeMirror.lookupKey(change.keyName, 'vim-insert', keyHandler);
+          } else if (typeof change == "string") {
+            var cur = cm.getCursor();
+            cm.replaceRange(change, cur, cur);
+          } else {
+            var start = cm.getCursor();
+            var end = offsetCursor(start, 0, change[0].length);
+            cm.replaceRange(change[0], start, end);
+          }
+        }
+      }
+      if (visualBlock) {
+        cm.setCursor(offsetCursor(head, 0, 1));
+      }
+    }
+
+    resetVimGlobalState();
+    return vimApi;
+  };
+  // Initialize Vim and make it available as an API.
+  CodeMirror.Vim = Vim();
+});