diff --git a/keymap/sublime.js b/keymap/sublime.js
@@ -108,6 +108,7 @@
   map["Shift-" + ctrl + "K"] = "deleteLine";
 
   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++) {
@@ -123,9 +124,9 @@
     });
   }
 
-  cmds[map[ctrl + "Enter"] = "insertLineAfter"] = function(cm) { insertLine(cm, false); };
+  cmds[map[ctrl + "Enter"] = "insertLineAfter"] = function(cm) { return insertLine(cm, false); };
 
-  cmds[map["Shift-" + ctrl + "Enter"] = "insertLineBefore"] = function(cm) { insertLine(cm, true); };
+  cmds[map["Shift-" + ctrl + "Enter"] = "insertLineBefore"] = function(cm) { return insertLine(cm, true); };
 
   function wordAt(cm, pos) {
     var start = pos.ch, end = start, line = cm.getLine(pos.line);
@@ -192,6 +193,7 @@
   var swapLineCombo = mac ? "Cmd-Ctrl-" : "Shift-Ctrl-";
 
   cmds[map[swapLineCombo + "Up"] = "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;
@@ -218,6 +220,7 @@
   };
 
   cmds[map[swapLineCombo + "Down"] = "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;
@@ -240,7 +243,7 @@
     });
   };
 
-  map[ctrl + "/"] = function(cm) {
+  cmds[map[ctrl + "/"] = "toggleCommentIndented"] = function(cm) {
     cm.toggleComment({ indent: true });
   }
 
@@ -289,6 +292,7 @@
   map[ctrl + "T"] = "transposeChars";
 
   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];

diff --git a/keymap/vim.js b/keymap/vim.js
@@ -292,12 +292,7 @@
         // Keypress character binding of format "'a'"
         return key.charAt(1);
       }
-      var pieces = key.split('-');
-      if (/-$/.test(key)) {
-        // If the - key was typed, split will result in 2 extra empty strings
-        // in the array. Replace them with 1 '-'.
-        pieces.splice(-2, 2, '-');
-      }
+      var pieces = key.split(/-(?!$)/);
       var lastPiece = pieces[pieces.length - 1];
       if (pieces.length == 1 && pieces[0].length == 1) {
         // No-modifier bindings use literal character bindings above. Skip.
@@ -1959,13 +1954,21 @@
               text = text.slice(0, - match[0].length);
             }
           }
-          var wasLastLine = head.line - 1 == cm.lastLine();
-          cm.replaceRange('', anchor, head);
-          if (args.linewise && !wasLastLine) {
+          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.
-            CodeMirror.commands.newlineAndIndent(cm);
-            // null ch so setCursor moves to end of line.
-            anchor.ch = null;
+            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 {
@@ -2144,9 +2147,7 @@
         switch (actionArgs.position) {
           case 'center': y = y - (height / 2) + lineHeight;
             break;
-          case 'bottom': y = y - height + lineHeight*1.4;
-            break;
-          case 'top': y = y + lineHeight*0.4;
+          case 'bottom': y = y - height + lineHeight;
             break;
         }
         cm.scrollTo(null, y);

diff --git a/lib/codemirror.css b/lib/codemirror.css
@@ -165,7 +165,7 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 }
 
 /* The fake, visible scrollbars. Used to force redraw during scrolling
-   before actuall scrolling happens, thus preventing shaking and
+   before actual scrolling happens, thus preventing shaking and
    flickering artifacts. */
 .CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
   position: absolute;

diff --git a/lib/codemirror.js b/lib/codemirror.js
@@ -13,7 +13,7 @@
   else if (typeof define == "function" && define.amd) // AMD
     return define([], mod);
   else // Plain browser env
-    this.CodeMirror = mod();
+    (this || window).CodeMirror = mod();
 })(function() {
   "use strict";
 
@@ -823,7 +823,7 @@
   // given line.
   function updateWidgetHeight(line) {
     if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
-      line.widgets[i].height = line.widgets[i].node.offsetHeight;
+      line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight;
   }
 
   // Do a bulk-read of the DOM positions and sizes needed to draw the
@@ -1094,10 +1094,6 @@
     if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
   }
 
-  function isReadOnly(cm) {
-    return cm.options.readOnly || cm.doc.cantEdit;
-  }
-
   // This will be set to an array of strings when copying, so that,
   // when pasting, we know what kind of selections the copied text
   // was made out of.
@@ -1152,7 +1148,7 @@
     var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
     if (pasted) {
       e.preventDefault();
-      if (!isReadOnly(cm) && !cm.options.disableInput)
+      if (!cm.isReadOnly() && !cm.options.disableInput)
         runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); });
       return true;
     }
@@ -1255,7 +1251,7 @@
       });
 
       on(te, "paste", function(e) {
-        if (handlePaste(e, cm)) return true;
+        if (signalDOMEvent(cm, e) || handlePaste(e, cm)) return
 
         cm.state.pasteIncoming = true;
         input.fastPoll();
@@ -1289,7 +1285,7 @@
       on(te, "copy", prepareCopyCut);
 
       on(display.scroller, "paste", function(e) {
-        if (eventInWidget(display, e)) return;
+        if (eventInWidget(display, e) || signalDOMEvent(cm, e)) return;
         cm.state.pasteIncoming = true;
         input.focus();
       });
@@ -1423,7 +1419,7 @@
       // in which case reading its value would be expensive.
       if (this.contextMenuPending || !cm.state.focused ||
           (hasSelection(input) && !prevInput && !this.composing) ||
-          isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)
+          cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)
         return false;
 
       var text = input.value;
@@ -1574,7 +1570,9 @@
       var div = input.div = display.lineDiv;
       disableBrowserMagic(div);
 
-      on(div, "paste", function(e) { handlePaste(e, cm); })
+      on(div, "paste", function(e) {
+        if (!signalDOMEvent(cm, e)) handlePaste(e, cm);
+      })
 
       on(div, "compositionstart", function(e) {
         var data = e.data;
@@ -1612,7 +1610,7 @@
 
       on(div, "input", function() {
         if (input.composing) return;
-        if (isReadOnly(cm) || !input.pollContent())
+        if (cm.isReadOnly() || !input.pollContent())
           runInOp(input.cm, function() {regChange(cm);});
       });
 
@@ -1692,8 +1690,13 @@
       try { var 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) {
-        sel.removeAllRanges();
-        sel.addRange(rng);
+        if (!gecko && this.cm.state.focused) {
+          sel.collapse(start.node, start.offset);
+          if (!rng.collapsed) sel.addRange(rng);
+        } else {
+          sel.removeAllRanges();
+          sel.addRange(rng);
+        }
         if (old && sel.anchorNode == null) sel.addRange(old);
         else if (gecko) this.startGracePeriod();
       }
@@ -1837,7 +1840,7 @@
       this.div.focus();
     },
     applyComposition: function(composing) {
-      if (isReadOnly(this.cm))
+      if (this.cm.isReadOnly())
         operation(this.cm, regChange)(this.cm)
       else if (composing.data && composing.data != composing.startData)
         operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
@@ -1849,7 +1852,7 @@
 
     onKeyPress: function(e) {
       e.preventDefault();
-      if (!isReadOnly(this.cm))
+      if (!this.cm.isReadOnly())
         operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
     },
 
@@ -2154,15 +2157,16 @@
 
   // Give beforeSelectionChange handlers a change to influence a
   // selection update.
-  function filterSelectionChange(doc, sel) {
+  function filterSelectionChange(doc, sel, options) {
     var obj = {
       ranges: sel.ranges,
       update: function(ranges) {
         this.ranges = [];
         for (var i = 0; i < ranges.length; i++)
           this.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);
@@ -2188,7 +2192,7 @@
 
   function setSelectionNoUndo(doc, sel, options) {
     if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
-      sel = filterSelectionChange(doc, sel);
+      sel = filterSelectionChange(doc, sel, options);
 
     var bias = options && options.bias ||
       (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
@@ -2222,8 +2226,9 @@
     var out;
     for (var i = 0; i < sel.ranges.length; i++) {
       var range = sel.ranges[i];
-      var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
-      var newHead = skipAtomic(doc, range.head, bias, mayClear);
+      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);
@@ -2232,54 +2237,59 @@
     return out ? normalizeSelection(out, sel.primIndex) : sel;
   }
 
-  // Ensure a given position is not inside an atomic range.
-  function skipAtomic(doc, pos, bias, mayClear) {
-    var flipped = false, curPos = pos;
-    var dir = bias || 1;
-    doc.cantEdit = false;
-    search: for (;;) {
-      var line = getLine(doc, curPos.line);
-      if (line.markedSpans) {
-        for (var i = 0; i < line.markedSpans.length; ++i) {
-          var sp = line.markedSpans[i], m = sp.marker;
-          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
-              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
-            if (mayClear) {
-              signal(m, "beforeCursorEnter");
-              if (m.explicitlyCleared) {
-                if (!line.markedSpans) break;
-                else {--i; continue;}
-              }
-            }
-            if (!m.atomic) continue;
-            var newPos = m.find(dir < 0 ? -1 : 1);
-            if (cmp(newPos, curPos) == 0) {
-              newPos.ch += dir;
-              if (newPos.ch < 0) {
-                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
-                else newPos = null;
-              } else if (newPos.ch > line.text.length) {
-                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
-                else newPos = null;
-              }
-              if (!newPos) {
-                if (flipped) {
-                  // Driven in a corner -- no valid cursor position found at all
-                  // -- try again *with* clearing, if we didn't already
-                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
-                  // Otherwise, turn off editing until further notice, and return the start of the doc
-                  doc.cantEdit = true;
-                  return Pos(doc.first, 0);
-                }
-                flipped = true; newPos = pos; dir = -dir;
-              }
-            }
-            curPos = newPos;
-            continue search;
+  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;
+      if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
+          (sp.to == null || (m.inclusiveRight ? 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;
+          if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) near = movePos(doc, near, -dir, line);
+          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 ? m.inclusiveLeft : m.inclusiveRight) far = movePos(doc, far, dir, line);
+        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null;
       }
-      return curPos;
+    }
+    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);
     }
   }
 
@@ -3608,7 +3618,7 @@
     }
 
     var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
-    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
+    if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
         type == "single" && (contained = sel.contains(start)) > -1 &&
         (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
         (cmp(contained.to(), start) > 0 || start.xRel < 0))
@@ -3832,7 +3842,7 @@
     e_preventDefault(e);
     if (ie) lastDrop = +new Date;
     var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
-    if (!pos || isReadOnly(cm)) return;
+    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) {
@@ -4071,7 +4081,7 @@
     cm.display.input.ensurePolled();
     var prevShift = cm.display.shift, done = false;
     try {
-      if (isReadOnly(cm)) cm.state.suppressEdits = true;
+      if (cm.isReadOnly()) cm.state.suppressEdits = true;
       if (dropShift) cm.display.shift = false;
       done = bound(cm) != Pass;
     } finally {
@@ -4844,7 +4854,7 @@
         if (dir > 0 && !moveOnce(!first)) break;
       }
     }
-    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
+    var result = skipAtomic(doc, Pos(line, ch), pos, origDir, true);
     if (!possible) result.hitSide = true;
     return result;
   }
@@ -5232,6 +5242,7 @@
       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) {
       if (x != null || y != null) resolveScrollToPos(this);
@@ -6668,7 +6679,7 @@
         parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
       removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
     }
-    return widget.height = widget.node.offsetHeight;
+    return widget.height = widget.node.parentNode.offsetHeight;
   }
 
   function addLineWidget(doc, handle, node, options) {
@@ -7078,7 +7089,7 @@
       if (nextChange == pos) { // Update current marker set
         spanStyle = spanEndStyle = spanStartStyle = title = css = "";
         collapsed = null; nextChange = Infinity;
-        var foundBookmarks = [];
+        var foundBookmarks = [], endStyles
         for (var j = 0; j < spans.length; ++j) {
           var sp = spans[j], m = sp.marker;
           if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
@@ -7091,14 +7102,17 @@
             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) spanEndStyle += " " + m.endStyle;
+            if (m.endStyle && sp.to == nextChange) (endStyles || (endStyles = [])).push(m.endStyle, sp.to)
             if (m.title && !title) title = m.title;
             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 = 0; j < endStyles.length; j += 2)
+          if (endStyles[j + 1] == nextChange) spanEndStyle += " " + endStyles[j]
+
         if (collapsed && (collapsed.from || 0) == pos) {
           buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
                              collapsed.marker, collapsed.from == null);
@@ -7446,10 +7460,11 @@
       extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
     }),
     extendSelections: docMethodOp(function(heads, options) {
-      extendSelections(this, clipPosArray(this, heads, options));
+      extendSelections(this, clipPosArray(this, heads), options);
     }),
     extendSelectionsBy: docMethodOp(function(f, options) {
-      extendSelections(this, map(this.sel.ranges, f), options);
+      var heads = map(this.sel.ranges, f);
+      extendSelections(this, clipPosArray(this, heads), options);
     }),
     setSelections: docMethodOp(function(ranges, primary, options) {
       if (!ranges.length) return;
@@ -8866,7 +8881,7 @@
 
   // THE END
 
-  CodeMirror.version = "5.9.0";
+  CodeMirror.version = "5.10.0";
 
   return CodeMirror;
 });
diff --git a/mode/clike/clike.js b/mode/clike/clike.js
@@ -262,21 +262,20 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
   var cTypes = "int long char short double float unsigned signed void size_t ptrdiff_t";
 
   function cppHook(stream, state) {
-    if (!state.startOfLine) return false;
-    for (;;) {
-      if (stream.skipTo("\\")) {
-        stream.next();
-        if (stream.eol()) {
-          state.tokenize = cppHook;
-          break;
-        }
-      } else {
-        stream.skipToEnd();
-        state.tokenize = null;
-        break;
+    if (!state.startOfLine) return false
+    for (var ch, next = null; ch = stream.peek();) {
+      if (!ch) {
+        break
+      } else if (ch == "\\" && stream.match(/^.$/)) {
+        next = cppHook
+        break
+      } else if (ch == "/" && stream.match(/^\/[\/\*]/, false)) {
+        break
       }
+      stream.next()
     }
-    return "meta";
+    state.tokenize = next
+    return "meta"
   }
 
   function pointerHook(_stream, state) {

diff --git a/mode/clike/test.js b/mode/clike/test.js
@@ -31,6 +31,15 @@
      "    [variable x][operator ++];",
      "[keyword return];");
 
+  MT("preprocessor",
+     "[meta #define FOO 3]",
+     "[variable-3 int] [variable foo];",
+     "[meta #define BAR\\]",
+     "[meta 4]",
+     "[variable-3 unsigned] [variable-3 int] [variable bar] [operator =] [number 8];",
+     "[meta #include <baz> ][comment // comment]")
+
+
   var mode_cpp = CodeMirror.getMode({indentUnit: 2}, "text/x-c++src");
   function MTCPP(name) { test.mode(name, mode_cpp, Array.prototype.slice.call(arguments, 1)); }
 

diff --git a/mode/crystal/crystal.js b/mode/crystal/crystal.js
@@ -0,0 +1,391 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://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";
+
+  CodeMirror.defineMode("crystal", function(config) {
+    function wordRegExp(words, end) {
+      return new RegExp((end ? "" : "^") + "(?:" + words.join("|") + ")" + (end ? "$" : "\\b"));
+    }
+
+    function chain(tokenize, stream, state) {
+      state.tokenize.push(tokenize);
+      return tokenize(stream, state);
+    }
+
+    var operators = /^(?:[-+/%|&^]|\*\*?|[<>]{2})/;
+    var conditionalOperators = /^(?:[=!]~|===|<=>|[<>=!]=?|[|&]{2}|~)/;
+    var indexingOperators = /^(?:\[\][?=]?)/;
+    var anotherOperators = /^(?:\.(?:\.{2})?|->|[?:])/;
+    var idents = /^[a-z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
+    var types = /^[A-Z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
+    var keywords = wordRegExp([
+      "abstract", "alias", "as", "asm", "begin", "break", "case", "class", "def", "do",
+      "else", "elsif", "end", "ensure", "enum", "extend", "for", "fun", "if", "ifdef",
+      "include", "instance_sizeof", "lib", "macro", "module", "next", "of", "out", "pointerof",
+      "private", "protected", "rescue", "return", "require", "sizeof", "struct",
+      "super", "then", "type", "typeof", "union", "unless", "until", "when", "while", "with",
+      "yield", "__DIR__", "__FILE__", "__LINE__"
+    ]);
+    var atomWords = wordRegExp(["true", "false", "nil", "self"]);
+    var indentKeywordsArray = [
+      "def", "fun", "macro",
+      "class", "module", "struct", "lib", "enum", "union",
+      "if", "unless", "case", "while", "until", "begin", "then",
+      "do",
+      "for", "ifdef"
+    ];
+    var indentKeywords = wordRegExp(indentKeywordsArray);
+    var dedentKeywordsArray = [
+      "end",
+      "else", "elsif",
+      "rescue", "ensure"
+    ];
+    var dedentKeywords = wordRegExp(dedentKeywordsArray);
+    var dedentPunctualsArray = ["\\)", "\\}", "\\]"];
+    var dedentPunctuals = new RegExp("^(?:" + dedentPunctualsArray.join("|") + ")$");
+    var nextTokenizer = {
+      "def": tokenFollowIdent, "fun": tokenFollowIdent, "macro": tokenMacroDef,
+      "class": tokenFollowType, "module": tokenFollowType, "struct": tokenFollowType,
+      "lib": tokenFollowType, "enum": tokenFollowType, "union": tokenFollowType
+    };
+    var matching = {"[": "]", "{": "}", "(": ")", "<": ">"};
+
+    function tokenBase(stream, state) {
+      if (stream.eatSpace()) {
+        return null;
+      }
+
+      // Macros
+      if (state.lastToken != "\\" && stream.match("{%", false)) {
+        return chain(tokenMacro("%", "%"), stream, state);
+      }
+
+      if (state.lastToken != "\\" && stream.match("{{", false)) {
+        return chain(tokenMacro("{", "}"), stream, state);
+      }
+
+      // Comments
+      if (stream.peek() == "#") {
+        stream.skipToEnd();
+        return "comment";
+      }
+
+      // Variables and keywords
+      var matched;
+      if (stream.match(idents)) {
+        stream.eat(/[?!]/);
+
+        matched = stream.current();
+        if (stream.eat(":")) {
+          return "atom";
+        } else if (state.lastToken == ".") {
+          return "property";
+        } else if (keywords.test(matched)) {
+          if (state.lastToken != "abstract" && indentKeywords.test(matched)) {
+            if (!(matched == "fun" && state.blocks.indexOf("lib") >= 0)) {
+              state.blocks.push(matched);
+              state.currentIndent += 1;
+            }
+          } else if (dedentKeywords.test(matched)) {
+            state.blocks.pop();
+            state.currentIndent -= 1;
+          }
+
+          if (nextTokenizer.hasOwnProperty(matched)) {
+            state.tokenize.push(nextTokenizer[matched]);
+          }
+
+          return "keyword";
+        } else if (atomWords.test(matched)) {
+          return "atom";
+        }
+
+        return "variable";
+      }
+
+      // Class variables and instance variables
+      // or attributes
+      if (stream.eat("@")) {
+        if (stream.peek() == "[") {
+          return chain(tokenNest("[", "]", "meta"), stream, state);
+        }
+
+        stream.eat("@");
+        stream.match(idents) || stream.match(types);
+        return "variable-2";
+      }
+
+      // Global variables
+      if (stream.eat("$")) {
+        stream.eat(/[0-9]+|\?/) || stream.match(idents) || stream.match(types);
+        return "variable-3";
+      }
+
+      // Constants and types
+      if (stream.match(types)) {
+        return "tag";
+      }
+
+      // Symbols or ':' operator
+      if (stream.eat(":")) {
+        if (stream.eat("\"")) {
+          return chain(tokenQuote("\"", "atom", false), stream, state);
+        } else if (stream.match(idents) || stream.match(types) ||
+                   stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators)) {
+          return "atom";
+        }
+        stream.eat(":");
+        return "operator";
+      }
+
+      // Strings
+      if (stream.eat("\"")) {
+        return chain(tokenQuote("\"", "string", true), stream, state);
+      }
+
+      // Strings or regexps or macro variables or '%' operator
+      if (stream.peek() == "%") {
+        var style = "string";
+        var embed = true;
+        var delim;
+
+        if (stream.match("%r")) {
+          // Regexps
+          style = "string-2";
+          delim = stream.next();
+        } else if (stream.match("%w")) {
+          embed = false;
+          delim = stream.next();
+        } else {
+          if(delim = stream.match(/^%([^\w\s=])/)) {
+            delim = delim[1];
+          } else if (stream.match(/^%[a-zA-Z0-9_\u009F-\uFFFF]*/)) {
+            // Macro variables
+            return "meta";
+          } else {
+            // '%' operator
+            return "operator";
+          }
+        }
+
+        if (matching.hasOwnProperty(delim)) {
+          delim = matching[delim];
+        }
+        return chain(tokenQuote(delim, style, embed), stream, state);
+      }
+
+      // Characters
+      if (stream.eat("'")) {
+        stream.match(/^(?:[^']|\\(?:[befnrtv0'"]|[0-7]{3}|u(?:[0-9a-fA-F]{4}|\{[0-9a-fA-F]{1,6}\})))/);
+        stream.eat("'");
+        return "atom";
+      }
+
+      // Numbers
+      if (stream.eat("0")) {
+        if (stream.eat("x")) {
+          stream.match(/^[0-9a-fA-F]+/);
+        } else if (stream.eat("o")) {
+          stream.match(/^[0-7]+/);
+        } else if (stream.eat("b")) {
+          stream.match(/^[01]+/);
+        }
+        return "number";
+      }
+
+      if (stream.eat(/\d/)) {
+        stream.match(/^\d*(?:\.\d+)?(?:[eE][+-]?\d+)?/);
+        return "number";
+      }
+
+      // Operators
+      if (stream.match(operators)) {
+        stream.eat("="); // Operators can follow assigin symbol.
+        return "operator";
+      }
+
+      if (stream.match(conditionalOperators) || stream.match(anotherOperators)) {
+        return "operator";
+      }
+
+      // Parens and braces
+      if (matched = stream.match(/[({[]/, false)) {
+        matched = matched[0];
+        return chain(tokenNest(matched, matching[matched], null), stream, state);
+      }
+
+      // Escapes
+      if (stream.eat("\\")) {
+        stream.next();
+        return "meta";
+      }
+
+      stream.next();
+      return null;
+    }
+
+    function tokenNest(begin, end, style, started) {
+      return function (stream, state) {
+        if (!started && stream.match(begin)) {
+          state.tokenize[state.tokenize.length - 1] = tokenNest(begin, end, style, true);
+          state.currentIndent += 1;
+          return style;
+        }
+
+        var nextStyle = tokenBase(stream, state);
+        if (stream.current() === end) {
+          state.tokenize.pop();
+          state.currentIndent -= 1;
+          nextStyle = style;
+        }
+
+        return nextStyle;
+      };
+    }
+
+    function tokenMacro(begin, end, started) {
+      return function (stream, state) {
+        if (!started && stream.match("{" + begin)) {
+          state.currentIndent += 1;
+          state.tokenize[state.tokenize.length - 1] = tokenMacro(begin, end, true);
+          return "meta";
+        }
+
+        if (stream.match(end + "}")) {
+          state.currentIndent -= 1;
+          state.tokenize.pop();
+          return "meta";
+        }
+
+        return tokenBase(stream, state);
+      };
+    }
+
+    function tokenMacroDef(stream, state) {
+      if (stream.eatSpace()) {
+        return null;
+      }
+
+      var matched;
+      if (matched = stream.match(idents)) {
+        if (matched == "def") {
+          return "keyword";
+        }
+        stream.eat(/[?!]/);
+      }
+
+      state.tokenize.pop();
+      return "def";
+    }
+
+    function tokenFollowIdent(stream, state) {
+      if (stream.eatSpace()) {
+        return null;
+      }
+
+      if (stream.match(idents)) {
+        stream.eat(/[!?]/);
+      } else {
+        stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators);
+      }
+      state.tokenize.pop();
+      return "def";
+    }
+
+    function tokenFollowType(stream, state) {
+      if (stream.eatSpace()) {
+        return null;
+      }
+
+      stream.match(types);
+      state.tokenize.pop();
+      return "def";
+    }
+
+    function tokenQuote(end, style, embed) {
+      return function (stream, state) {
+        var escaped = false;
+
+        while (stream.peek()) {
+          if (!escaped) {
+            if (stream.match("{%", false)) {
+              state.tokenize.push(tokenMacro("%", "%"));
+              return style;
+            }
+
+            if (stream.match("{{", false)) {
+              state.tokenize.push(tokenMacro("{", "}"));
+              return style;
+            }
+
+            if (embed && stream.match("#{", false)) {
+              state.tokenize.push(tokenNest("#{", "}", "meta"));
+              return style;
+            }
+
+            var ch = stream.next();
+
+            if (ch == end) {
+              state.tokenize.pop();
+              return style;
+            }
+
+            escaped = ch == "\\";
+          } else {
+            stream.next();
+            escaped = false;
+          }
+        }
+
+        return style;
+      };
+    }
+
+    return {
+      startState: function () {
+        return {
+          tokenize: [tokenBase],
+          currentIndent: 0,
+          lastToken: null,
+          blocks: []
+        };
+      },
+
+      token: function (stream, state) {
+        var style = state.tokenize[state.tokenize.length - 1](stream, state);
+        var token = stream.current();
+
+        if (style && style != "comment") {
+          state.lastToken = token;
+        }
+
+        return style;
+      },
+
+      indent: function (state, textAfter) {
+        textAfter = textAfter.replace(/^\s*(?:\{%)?\s*|\s*(?:%\})?\s*$/g, "");
+
+        if (dedentKeywords.test(textAfter) || dedentPunctuals.test(textAfter)) {
+          return config.indentUnit * (state.currentIndent - 1);
+        }
+
+        return config.indentUnit * state.currentIndent;
+      },
+
+      fold: "indent",
+      electricInput: wordRegExp(dedentPunctualsArray.concat(dedentKeywordsArray), true),
+      lineComment: '#'
+    };
+  });
+
+  CodeMirror.defineMIME("text/x-crystal", "crystal");
+});
diff --git a/mode/crystal/index.html b/mode/crystal/index.html
@@ -0,0 +1,119 @@
+<!doctype html>
+
+<title>CodeMirror: Crystal mode</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../../doc/docs.css">
+
+<link rel="stylesheet" href="../../lib/codemirror.css">
+<script src="../../lib/codemirror.js"></script>
+<script src="../../addon/edit/matchbrackets.js"></script>
+<script src="crystal.js"></script>
+<style>
+  .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
+  .cm-s-default span.cm-arrow { color: red; }
+</style>
+
+<div id=nav>
+  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+
+  <ul>
+    <li><a href="../../index.html">Home</a>
+    <li><a href="../../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/codemirror/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a href="../index.html">Language modes</a>
+    <li><a class=active href="#">Crystal</a>
+  </ul>
+</div>
+
+<article>
+<h2>Crystal mode</h2>
+<form><textarea id="code" name="code">
+# Features of Crystal
+# - Ruby-inspired syntax.
+# - Statically type-checked but without having to specify the type of variables or method arguments.
+# - Be able to call C code by writing bindings to it in Crystal.
+# - Have compile-time evaluation and generation of code, to avoid boilerplate code.
+# - Compile to efficient native code.
+
+# A very basic HTTP server
+require "http/server"
+
+server = HTTP::Server.new(8080) do |request|
+  HTTP::Response.ok "text/plain", "Hello world, got #{request.path}!"
+end
+
+puts "Listening on http://0.0.0.0:8080"
+server.listen
+
+module Foo
+  def initialize(@foo); end
+
+  abstract def abstract_method : String
+
+  @[AlwaysInline]
+  def with_foofoo
+    with Foo.new(self) yield
+  end
+
+  struct Foo
+    def initialize(@foo); end
+
+    def hello_world
+      @foo.abstract_method
+    end
+  end
+end
+
+class Bar
+  include Foo
+
+  @@foobar = 12345
+
+  def initialize(@bar)
+    super(@bar.not_nil! + 100)
+  end
+
+  macro alias_method(name, method)
+    def {{ name }}(*args)
+      {{ method }}(*args)
+    end
+  end
+
+  def a_method
+    "Hello, World"
+  end
+
+  alias_method abstract_method, a_method
+
+  macro def show_instance_vars : Nil
+    {% for var in @type.instance_vars %}
+      puts "@{{ var }} = #{ @{{ var }} }"
+    {% end %}
+    nil
+  end
+end
+
+class Baz &lt; Bar; end
+
+lib LibC
+  fun c_puts = "puts"(str : Char*) : Int
+end
+
+$baz = Baz.new(100)
+$baz.show_instance_vars
+$baz.with_foofoo do
+  LibC.c_puts hello_world
+end
+</textarea></form>
+<script>
+  var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+    mode: "text/x-crystal",
+    matchBrackets: true,
+    indentUnit: 2
+  });
+</script>
+
+<p><strong>MIME types defined:</strong> <code>text/x-crystal</code>.</p>
+</article>
diff --git a/mode/css/css.js b/mode/css/css.js
@@ -12,9 +12,8 @@
 "use strict";
 
 CodeMirror.defineMode("css", function(config, parserConfig) {
-  var provided = parserConfig;
+  var inline = parserConfig.inline
   if (!parserConfig.propertyKeywords) parserConfig = CodeMirror.resolveMode("text/css");
-  parserConfig.inline = provided.inline;
 
   var indentUnit = config.indentUnit,
       tokenHooks = parserConfig.tokenHooks,
@@ -368,9 +367,9 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
   return {
     startState: function(base) {
       return {tokenize: null,
-              state: parserConfig.inline ? "block" : "top",
+              state: inline ? "block" : "top",
               stateArg: null,
-              context: new Context(parserConfig.inline ? "block" : "top", base || 0, null)};
+              context: new Context(inline ? "block" : "top", base || 0, null)};
     },
 
     token: function(stream, state) {

diff --git a/mode/django/django.js b/mode/django/django.js
@@ -35,11 +35,13 @@
                    "truncatechars_html", "truncatewords", "truncatewords_html",
                    "unordered_list", "upper", "urlencode", "urlize",
                    "urlizetrunc", "wordcount", "wordwrap", "yesno"],
-        operators = ["==", "!=", "<", ">", "<=", ">=", "in", "not", "or", "and"];
+        operators = ["==", "!=", "<", ">", "<=", ">="],
+        wordOperators = ["in", "not", "or", "and"];
 
     keywords = new RegExp("^\\b(" + keywords.join("|") + ")\\b");
     filters = new RegExp("^\\b(" + filters.join("|") + ")\\b");
     operators = new RegExp("^\\b(" + operators.join("|") + ")\\b");
+    wordOperators = new RegExp("^\\b(" + wordOperators.join("|") + ")\\b");
 
     // We have to return "null" instead of null, in order to avoid string
     // styling as the default, when using Django templates inside HTML
@@ -270,6 +272,11 @@
         return "operator";
       }
 
+      // Attempt to match a word operator
+      if (stream.match(wordOperators)) {
+        return "keyword";
+      }
+
       // Attempt to match a keyword
       var keywordMatch = stream.match(keywords);
       if (keywordMatch) {

diff --git a/mode/handlebars/handlebars.js b/mode/handlebars/handlebars.js
@@ -3,15 +3,15 @@
 
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("../../addon/mode/simple"));
+    mod(require("../../lib/codemirror"), require("../../addon/mode/simple"), require("../../addon/mode/multiplex"));
   else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "../../addon/mode/simple"], mod);
+    define(["../../lib/codemirror", "../../addon/mode/simple", "../../addon/mode/multiplex"], mod);
   else // Plain browser env
     mod(CodeMirror);
 })(function(CodeMirror) {
   "use strict";
 
-  CodeMirror.defineSimpleMode("handlebars", {
+  CodeMirror.defineSimpleMode("handlebars-tags", {
     start: [
       { regex: /\{\{!--/, push: "dash_comment", token: "comment" },
       { regex: /\{\{!/,   push: "comment", token: "comment" },
@@ -49,5 +49,14 @@
     ]
   });
 
+  CodeMirror.defineMode("handlebars", function(config, parserConfig) {
+    var handlebars = CodeMirror.getMode(config, "handlebars-tags");
+    if (!parserConfig || !parserConfig.base) return handlebars;
+    return CodeMirror.multiplexingMode(
+      CodeMirror.getMode(config, parserConfig.base),
+      {open: "{{", close: "}}", mode: handlebars, parseDelimiters: true}
+    );
+  });
+
   CodeMirror.defineMIME("text/x-handlebars-template", "handlebars");
 });
diff --git a/mode/handlebars/index.html b/mode/handlebars/index.html
@@ -61,18 +61,10 @@ <h1>{{t 'article_list'}}</h1>
 
 </textarea></form>
     <script>
-      CodeMirror.defineMode("htmlhandlebars", function(config) {
-        return CodeMirror.multiplexingMode(
-          CodeMirror.getMode(config, "text/html"),
-          {open: "{{", close: "}}",
-           mode: CodeMirror.getMode(config, "handlebars"),
-           parseDelimiters: true});
-      });
-
       var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
         lineNumbers: true,
         matchBrackets: true,
-        mode: "htmlhandlebars"
+        mode: {name: "handlebars", base: "text/html"}
       });
     </script>
     </script>

diff --git a/mode/index.html b/mode/index.html
@@ -42,6 +42,7 @@ <h2>Language modes</h2>
       <li><a href="cobol/index.html">COBOL</a></li>
       <li><a href="coffeescript/index.html">CoffeeScript</a></li>
       <li><a href="commonlisp/index.html">Common Lisp</a></li>
+      <li><a href="crystal/index.html">Crystal</a></li>
       <li><a href="css/index.html">CSS</a></li>
       <li><a href="cypher/index.html">Cypher</a></li>
       <li><a href="python/index.html">Cython</a></li>
@@ -86,6 +87,7 @@ <h2>Language modes</h2>
       <li><a href="mathematica/index.html">Mathematica</a></li>
       <li><a href="mirc/index.html">mIRC</a></li>
       <li><a href="modelica/index.html">Modelica</a></li>
+      <li><a href="mscgen/index.html">MscGen</a></li>
       <li><a href="mumps/index.html">MUMPS</a></li>
       <li><a href="nginx/index.html">Nginx</a></li>
       <li><a href="nsis/index.html">NSIS</a></li>
@@ -147,6 +149,7 @@ <h2>Language modes</h2>
       <li><a href="xml/index.html">XML/HTML</a></li>
       <li><a href="xquery/index.html">XQuery</a></li>
       <li><a href="yaml/index.html">YAML</a></li>
+      <li><a href="yaml-frontmatter/index.html">YAML frontmatter</a></li>
       <li><a href="z80/index.html">Z80</a></li>
     </ul>
   </div>

diff --git a/mode/javascript/javascript.js b/mode/javascript/javascript.js
@@ -45,15 +45,20 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       var type = {type: "variable", style: "variable-3"};
       var tsKeywords = {
         // object-like things
-        "interface": kw("interface"),
-        "extends": kw("extends"),
-        "constructor": kw("constructor"),
+        "interface": kw("class"),
+        "implements": C,
+        "namespace": C,
+        "module": kw("module"),
+        "enum": kw("module"),
 
         // scope modifiers
-        "public": kw("public"),
-        "private": kw("private"),
-        "protected": kw("protected"),
-        "static": kw("static"),
+        "public": kw("modifier"),
+        "private": kw("modifier"),
+        "protected": kw("modifier"),
+        "abstract": kw("modifier"),
+
+        // operators
+        "as": operator,
 
         // types
         "string": type, "number": type, "boolean": type, "any": type
@@ -121,7 +126,8 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       } else if (stream.eat("/")) {
         stream.skipToEnd();
         return ret("comment", "comment");
-      } else if (/^(?:operator|sof|keyword c|case|new|[\[{}\(,;:])$/.test(state.lastType)) {
+      } else if (/^(?:operator|sof|keyword c|case|new|[\[{}\(,;:])$/.test(state.lastType) ||
+                 (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - 1)))) {
         readRegexp(stream);
         stream.match(/^\b(([gimyu])(?![gimyu]*\2))+\b/);
         return ret("regexp", "string-2");
@@ -355,6 +361,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     if (type == "class") return cont(pushlex("form"), className, poplex);
     if (type == "export") return cont(pushlex("stat"), afterExport, poplex);
     if (type == "import") return cont(pushlex("stat"), afterImport, poplex);
+    if (type == "module") return cont(pushlex("form"), pattern, pushlex("}"), expect("{"), block, poplex, poplex)
     return pass(pushlex("stat"), expression, expect(";"), poplex);
   }
   function expression(type) {
@@ -459,6 +466,8 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       return cont(afterprop);
     } else if (type == "jsonld-keyword") {
       return cont(afterprop);
+    } else if (type == "modifier") {
+      return cont(objprop)
     } else if (type == "[") {
       return cont(expression, expect("]"), afterprop);
     } else if (type == "spread") {
@@ -511,6 +520,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     return pass(pattern, maybetype, maybeAssign, vardefCont);
   }
   function pattern(type, value) {
+    if (type == "modifier") return cont(pattern)
     if (type == "variable") { register(value); return cont(); }
     if (type == "spread") return cont(pattern);
     if (type == "[") return contCommasep(pattern, "]");

diff --git a/mode/markdown/markdown.js b/mode/markdown/markdown.js
@@ -620,7 +620,7 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
   }
 
   function footnoteLink(stream, state) {
-    if (stream.match(/^[^\]]*\]:/, false)) {
+    if (stream.match(/^([^\]\\]|\\.)*\]:/, false)) {
       state.f = footnoteLinkInside;
       stream.next(); // Consume [
       if (modeCfg.highlightFormatting) state.formatting = "link";
@@ -639,7 +639,7 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
       return returnType;
     }
 
-    stream.match(/^[^\]]+/, true);
+    stream.match(/^([^\]\\]|\\.)+/, true);
 
     return tokenTypes.linkText;
   }

diff --git a/mode/markdown/test.js b/mode/markdown/test.js
@@ -696,6 +696,15 @@
      "[link [[foo]]:] [string&url http://example.com/]",
      "(bar\" hello");
 
+  MT("labelEscape",
+     "[link [[foo \\]] ]]:] [string&url http://example.com/]");
+
+  MT("labelEscapeColon",
+     "[link [[foo \\]]: bar]]:] [string&url http://example.com/]");
+
+  MT("labelEscapeEnd",
+     "[[foo\\]]: http://example.com/");
+
   MT("linkWeb",
      "[link <http://example.com/>] foo");
 

diff --git a/mode/meta.js b/mode/meta.js
@@ -28,6 +28,7 @@
     {name: "Common Lisp", mime: "text/x-common-lisp", mode: "commonlisp", ext: ["cl", "lisp", "el"], alias: ["lisp"]},
     {name: "Cypher", mime: "application/x-cypher-query", mode: "cypher", ext: ["cyp", "cypher"]},
     {name: "Cython", mime: "text/x-cython", mode: "python", ext: ["pyx", "pxd", "pxi"]},
+    {name: "Crystal", mime: "text/x-crystal", mode: "crystal", ext: ["cr"]},
     {name: "CSS", mime: "text/css", mode: "css", ext: ["css"]},
     {name: "CQL", mime: "text/x-cassandra", mode: "sql", ext: ["cql"]},
     {name: "D", mime: "text/x-d", mode: "d", ext: ["d"]},

diff --git a/mode/mscgen/index.html b/mode/mscgen/index.html
@@ -1,6 +1,6 @@
 <!doctype html>
 
-<title>CodeMirror: Oz mode</title>
+<title>CodeMirror: MscGen mode</title>
 <meta charset="utf-8"/>
 <link rel=stylesheet href="../../doc/docs.css">
 
@@ -24,11 +24,10 @@
 <article>
 <h2>MscGen mode</h2>
 
-<div><textarea id="code">
+<div><textarea id="mscgen-code">
 # Sample mscgen program
-# See http://www.mcternan.me.uk/mscgen or 
+# See http://www.mcternan.me.uk/mscgen or
 # https://sverweij.github.io/mscgen_js for more samples
-
 msc {
   # options
   hscale="1.2";
@@ -54,12 +53,99 @@ <h2>MscGen mode</h2>
 }
 </textarea></div>
 
+<h2>Xù mode</h2>
+
+<div><textarea id="xu-code">
+# Xù - expansions to MscGen to support inline expressions
+#      https://github.com/sverweij/mscgen_js/blob/master/wikum/xu.md
+# More samples: https://sverweij.github.io/mscgen_js
+msc {
+  hscale="0.8",
+  width="700";
+
+  a,
+  b [label="change store"],
+  c,
+  d [label="necro queue"],
+  e [label="natalis queue"],
+  f;
+
+  a =>> b [label="get change list()"];
+  a alt f [label="changes found"] { /* alt is a xu specific keyword*/
+    b >> a [label="list of changes"];
+    a =>> c [label="cull old stuff (list of changes)"];
+    b loop e [label="for each change"] { // loop is xu specific as well...
+      /*
+       * Interesting stuff happens.
+       */
+      c =>> b [label="get change()"];
+      b >> c [label="change"];
+      c alt e [label="change too old"] {
+        c =>> d [label="queue(change)"];
+        --- [label="change newer than latest run"];
+        c =>> e [label="queue(change)"];
+        --- [label="all other cases"];
+        ||| [label="leave well alone"];
+      };
+    };
+
+    c >> a [label="done
+    processing"];
+
+    /* shucks! nothing found ...*/
+    --- [label="nothing found"];
+    b >> a [label="nothing"];
+    a note a [label="silent exit"];
+  };
+}
+</textarea></div>
+
+<h2>MsGenny mode</h2>
+<div><textarea id="msgenny-code">
+# MsGenny - simplified version of MscGen / Xù
+#           https://github.com/sverweij/mscgen_js/blob/master/wikum/msgenny.md
+# More samples: https://sverweij.github.io/mscgen_js
+a -> b   : a -> b  (signal);
+a => b   : a => b  (method);
+b >> a   : b >> a  (return value);
+a =>> b  : a =>> b (callback);
+a -x b   : a -x b  (lost);
+a :> b   : a :> b  (emphasis);
+a .. b   : a .. b  (dotted);
+a -- b   : "a -- b straight line";
+a note a : a note a\n(note),
+b box b  : b box b\n(action);
+a rbox a : a rbox a\n(reference),
+b abox b : b abox b\n(state/ condition);
+|||      : ||| (empty row);
+...      : ... (omitted row);
+---      : --- (comment);
+</textarea></div>
+
+    <p>
+      Simple mode for highlighting MscGen and two derived sequence
+      chart languages.
+    </p>
+
     <script>
-      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+      var mscgenEditor = CodeMirror.fromTextArea(document.getElementById("mscgen-code"), {
         lineNumbers: true,
-        mode: "mscgen",
+        mode: "text/x-mscgen",
+      });
+      var xuEditor = CodeMirror.fromTextArea(document.getElementById("xu-code"), {
+        lineNumbers: true,
+        mode: "text/x-xu",
+      });
+      var msgennyEditor = CodeMirror.fromTextArea(document.getElementById("msgenny-code"), {
+        lineNumbers: true,
+        mode: "text/x-msgenny",
       });
     </script>
 
-    <p><strong>MIME types defined:</strong> <code>text/x-mscgen</code></p>
+    <p><strong>MIME types defined:</strong>
+      <code>text/x-mscgen</code>
+      <code>text/x-xu</code>
+      <code>text/x-msgenny</code>
+    </p>
+
 </article>
diff --git a/mode/mscgen/index_msgenny.html b/mode/mscgen/index_msgenny.html
diff --git a/mode/mscgen/index_xu.html b/mode/mscgen/index_xu.html
diff --git a/mode/mscgen/mscgen.js b/mode/mscgen/mscgen.js
@@ -69,11 +69,11 @@
   CodeMirror.defineMIME("text/x-msgenny", {name: "mscgen", language: "msgenny"});
 
   function wordRegexpBoundary(pWords) {
-    return new RegExp("\\b((" + pWords.join(")|(") + "))\\b", "i");
+    return new RegExp("\\b(" + pWords.join("|") + ")\\b", "i");
   }
 
   function wordRegexp(pWords) {
-    return new RegExp("((" + pWords.join(")|(") + "))", "i");
+    return new RegExp("(" + pWords.join("|") + ")", "i");
   }
 
   function startStateFn() {

diff --git a/mode/sparql/sparql.js b/mode/sparql/sparql.js
@@ -165,7 +165,9 @@ CodeMirror.defineMode("sparql", function(config) {
         return context.col + (closing ? 0 : 1);
       else
         return context.indent + (closing ? 0 : indentUnit);
-    }
+    },
+
+    lineComment: "#"
   };
 });
 

diff --git a/mode/swift/index.html b/mode/swift/index.html
@@ -35,42 +35,42 @@ <h2>Swift mode</h2>
 //  Created by Main Account on 12/18/14.
 //  Copyright (c) 2014 Razeware LLC. All rights reserved.
 //
- 
+
 import Foundation
- 
+
 class TipCalculatorModel {
- 
+
   var total: Double
   var taxPct: Double
   var subtotal: Double {
     get {
       return total / (taxPct + 1)
     }
   }
- 
+
   init(total: Double, taxPct: Double) {
     self.total = total
     self.taxPct = taxPct
   }
- 
+
   func calcTipWithTipPct(tipPct: Double) -> Double {
     return subtotal * tipPct
   }
- 
+
   func returnPossibleTips() -> [Int: Double] {
- 
+
     let possibleTipsInferred = [0.15, 0.18, 0.20]
     let possibleTipsExplicit:[Double] = [0.15, 0.18, 0.20]
- 
+
     var retval = [Int: Double]()
     for possibleTip in possibleTipsInferred {
       let intPct = Int(possibleTip*100)
       retval[intPct] = calcTipWithTipPct(possibleTip)
     }
     return retval
- 
+
   }
- 
+
 }
 </textarea></form>
 

diff --git a/mode/swift/swift.js b/mode/swift/swift.js
@@ -13,189 +13,149 @@
 })(function(CodeMirror) {
   "use strict"
 
-  function trim(str) { return /^\s*(.*?)\s*$/.exec(str)[1] }
+  function wordSet(words) {
+    var set = {}
+    for (var i = 0; i < words.length; i++) set[words[i]] = true
+    return set
+  }
+
+  var keywords = wordSet(["var","let","class","deinit","enum","extension","func","import","init","protocol",
+                          "static","struct","subscript","typealias","as","dynamicType","is","new","super",
+                          "self","Self","Type","__COLUMN__","__FILE__","__FUNCTION__","__LINE__","break","case",
+                          "continue","default","do","else","fallthrough","if","in","for","return","switch",
+                          "where","while","associativity","didSet","get","infix","inout","left","mutating",
+                          "none","nonmutating","operator","override","postfix","precedence","prefix","right",
+                          "set","unowned","weak","willSet"])
+  var definingKeywords = wordSet(["var","let","class","enum","extension","func","import","protocol","struct",
+                                  "typealias","dynamicType","for"])
+  var atoms = wordSet(["Infinity","NaN","undefined","null","true","false","on","off","yes","no","nil","null",
+                       "this","super"])
+  var types = wordSet(["String","bool","int","string","double","Double","Int","Float","float","public",
+                       "private","extension"])
+  var operators = "+-/*%=|&<>#"
+  var punc = ";,.(){}[]"
+  var delimiters = /^(?:[()\[\]{},:`=;]|\.\.?\.?)/
+  var number = /^-?(?:(?:[\d_]+\.[_\d]*|\.[_\d]+|0o[0-7_\.]+|0b[01_\.]+)(?:e-?[\d_]+)?|0x[\d_a-f\.]+(?:p-?[\d_]+)?)/i
+  var identifier = /^[_A-Za-z$][_A-Za-z$0-9]*/
+  var property = /^[@\.][_A-Za-z$][_A-Za-z$0-9]*/
+  var regexp = /^\/(?!\s)(?:\/\/)?(?:\\.|[^\/])+\//
 
-  var separators = [" ","\\\+","\\\-","\\\(","\\\)","\\\*","/",":","\\\?","\\\<","\\\>"," ","\\\."]
-  var tokens = new RegExp(separators.join("|"),"g")
+  function tokenBase(stream, state, prev) {
+    if (stream.eatSpace()) return null
 
-  function getWord(string, pos) {
-    var index = -1, count = 1
-    var words = string.split(tokens)
-    for (var i = 0; i < words.length; i++) {
-      for(var j = 1; j <= words[i].length; j++) {
-        if (count==pos) index = i
-        count++
+    var ch = stream.peek()
+    if (ch == "/") {
+      if (stream.match("//")) {
+        stream.skipToEnd()
+        return "comment"
       }
-      count++
+      if (stream.match("/*")) {
+        state.tokenize.push(tokenComment)
+        return tokenComment(stream, state)
+      }
+      if (stream.match(regexp)) return "string-2"
     }
-    var ret = ["", ""]
-    if (pos == 0) {
-      ret[1] = words[0]
-      ret[0] = null
-    } else {
-      ret[1] = words[index]
-      ret[0] = words[index-1]
+    if (operators.indexOf(ch) > -1) {
+      stream.next()
+      return "operator"
+    }
+    if (punc.indexOf(ch) > -1) {
+      stream.match(delimiters)
+      return "punctuation"
+    }
+    if (ch == '"' || ch == "'") {
+      stream.next()
+      var tokenize = tokenString(ch)
+      state.tokenize.push(tokenize)
+      return tokenize(stream, state)
     }
-    return ret
-  }
 
-  CodeMirror.defineMode("swift", function() {
-    var keywords=["var","let","class","deinit","enum","extension","func","import","init","let","protocol","static","struct","subscript","typealias","var","as","dynamicType","is","new","super","self","Self","Type","__COLUMN__","__FILE__","__FUNCTION__","__LINE__","break","case","continue","default","do","else","fallthrough","if","in","for","return","switch","where","while","associativity","didSet","get","infix","inout","left","mutating","none","nonmutating","operator","override","postfix","precedence","prefix","right","set","unowned","unowned(safe)","unowned(unsafe)","weak","willSet"]
-    var commonConstants=["Infinity","NaN","undefined","null","true","false","on","off","yes","no","nil","null","this","super"]
-    var types=["String","bool","int","string","double","Double","Int","Float","float","public","private","extension"]
-    var numbers=["0","1","2","3","4","5","6","7","8","9"]
-    var operators=["+","-","/","*","%","=","|","&","<",">"]
-    var punc=[";",",",".","(",")","{","}","[","]"]
-    var delimiters=/^(?:[()\[\]{},:`=;]|\.\.?\.?)/
-    var identifiers=/^[_A-Za-z$][_A-Za-z$0-9]*/
-    var properties=/^(@|this\.)[_A-Za-z$][_A-Za-z$0-9]*/
-    var regexPrefixes=/^(\/{3}|\/)/
+    if (stream.match(number)) return "number"
+    if (stream.match(property)) return "property"
 
-    return {
-      startState: function() {
-        return {
-          prev: false,
-          string: false,
-          escape: false,
-          inner: false,
-          comment: false,
-          num_left: 0,
-          num_right: 0,
-          doubleString: false,
-          singleString: false
+    if (stream.match(identifier)) {
+      var ident = stream.current()
+      if (keywords.hasOwnProperty(ident)) {
+        if (definingKeywords.hasOwnProperty(ident))
+          state.prev = "define"
+        return "keyword"
+      }
+      if (types.hasOwnProperty(ident)) return "variable-2"
+      if (atoms.hasOwnProperty(ident)) return "atom"
+      if (prev == "define") return "def"
+      return "variable"
+    }
+
+    stream.next()
+    return null
+  }
+
+  function tokenUntilClosingParen() {
+    var depth = 0
+    return function(stream, state, prev) {
+      var inner = tokenBase(stream, state, prev)
+      if (inner == "punctuation") {
+        if (stream.current() == "(") ++depth
+        else if (stream.current() == ")") {
+          if (depth == 0) {
+            stream.backUp(1)
+            state.tokenize.pop()
+            return state.tokenize[state.tokenize.length - 1](stream, state)
+          }
+          else --depth
         }
-      },
-      token: function(stream, state) {
-        if (stream.eatSpace()) return null
+      }
+      return inner
+    }
+  }
 
-        var ch = stream.next()
-        if (state.string) {
-          if (state.escape) {
-            state.escape = false
+  function tokenString(quote) {
+    return function(stream, state) {
+      var ch, escaped = false
+      while (ch = stream.next()) {
+        if (escaped) {
+          if (ch == "(") {
+            state.tokenize.push(tokenUntilClosingParen())
             return "string"
-          } else {
-            if ((ch == "\"" && (state.doubleString && !state.singleString) ||
-                 (ch == "'" && (!state.doubleString && state.singleString))) &&
-                !state.escape) {
-              state.string = false
-              state.doubleString = false
-              state.singleString = false
-              return "string"
-            } else if (ch == "\\" && stream.peek() == "(") {
-              state.inner = true
-              state.string = false
-              return "keyword"
-            } else if (ch == "\\" && stream.peek() != "(") {
-              state.escape = true
-              state.string = true
-              return "string"
-            } else {
-              return "string"
-            }
-          }
-        } else if (state.comment) {
-          if (ch == "*" && stream.peek() == "/") {
-            state.prev = "*"
-            return "comment"
-          } else if (ch == "/" && state.prev == "*") {
-            state.prev = false
-            state.comment = false
-            return "comment"
           }
-          return "comment"
+          escaped = false
+        } else if (ch == quote) {
+          break
         } else {
-          if (ch == "/") {
-            if (stream.peek() == "/") {
-              stream.skipToEnd()
-              return "comment"
-            }
-            if (stream.peek() == "*") {
-              state.comment = true
-              return "comment"
-            }
-          }
-          if (ch == "(" && state.inner) {
-            state.num_left++
-            return null
-          }
-          if (ch == ")" && state.inner) {
-            state.num_right++
-            if (state.num_left == state.num_right) {
-              state.inner=false
-              state.string=true
-            }
-            return null
-          }
-
-          var ret = getWord(stream.string, stream.pos)
-          var the_word = ret[1]
-          var prev_word = ret[0]
-
-          if (operators.indexOf(ch + "") > -1) return "operator"
-          if (punc.indexOf(ch) > -1) return "punctuation"
-
-          if (typeof the_word != "undefined") {
-            the_word = trim(the_word)
-            if (typeof prev_word != "undefined") prev_word = trim(prev_word)
-            if (the_word.charAt(0) == "#") return null
-
-            if (types.indexOf(the_word) > -1) return "def"
-            if (commonConstants.indexOf(the_word) > -1) return "atom"
-            if (numbers.indexOf(the_word) > -1) return "number"
+          escaped = ch == "\\"
+        }
+      }
+      state.tokenize.pop()
+      return "string"
+    }
+  }
 
-            if ((numbers.indexOf(the_word.charAt(0) + "") > -1 ||
-                 operators.indexOf(the_word.charAt(0) + "") > -1) &&
-                numbers.indexOf(ch) > -1) {
-              return "number"
-            }
+  function tokenComment(stream, state) {
+    stream.match(/^(?:[^*]|\*(?!\/))*/)
+    if (stream.match("*/")) state.tokenize.pop()
+    return "comment"
+  }
 
-            if (keywords.indexOf(the_word) > -1 ||
-                keywords.indexOf(the_word.split(tokens)[0]) > -1)
-              return "keyword"
-            if (keywords.indexOf(prev_word) > -1) return "def"
-          }
-          if (ch == '"' && !state.doubleString) {
-            state.string = true
-            state.doubleString = true
-            return "string"
-          }
-          if (ch == "'" && !state.singleString) {
-            state.string = true
-            state.singleString = true
-            return "string"
-          }
-          if (ch == "(" && state.inner)
-            state.num_left++
-          if (ch == ")" && state.inner) {
-            state.num_right++
-            if (state.num_left == state.num_right) {
-              state.inner = false
-              state.string = true
-            }
-            return null
-          }
-          if (stream.match(/^-?[0-9\.]/, false)) {
-            if (stream.match(/^-?\d*\.\d+(e[\+\-]?\d+)?/i) ||
-                stream.match(/^-?\d+\.\d*/) ||
-                stream.match(/^-?\.\d+/)) {
-              if (stream.peek() == ".") stream.backUp(1)
-              return "number"
-            }
-            if (stream.match(/^-?0x[0-9a-f]+/i) ||
-                stream.match(/^-?[1-9]\d*(e[\+\-]?\d+)?/) ||
-                stream.match(/^-?0(?![\dx])/i))
-              return "number"
-          }
-          if (stream.match(regexPrefixes)) {
-            if (stream.current()!="/" || stream.match(/^.*\//,false)) return "string"
-            else stream.backUp(1)
-          }
-          if (stream.match(delimiters)) return "punctuation"
-          if (stream.match(identifiers)) return "variable"
-          if (stream.match(properties)) return "property"
-          return "variable"
+  CodeMirror.defineMode("swift", function() {
+    return {
+      startState: function() {
+        return {
+          prev: null,
+          tokenize: []
         }
-      }
+      },
+      token: function(stream, state) {
+        var prev = state.prev
+        state.prev = null
+        var tokenize = state.tokenize[state.tokenize.length - 1] || tokenBase
+        var style = tokenize(stream, state, prev)
+        if (!style || style == "comment") state.prev = prev
+        else if (!state.prev) state.prev = style
+        return style
+      },
+      lineComment: "//",
+      blockCommentStart: "/*",
+      blockCommentEnd: "*/"
     }
   })
 

diff --git a/mode/yaml-frontmatter/index.html b/mode/yaml-frontmatter/index.html
@@ -0,0 +1,121 @@
+<!doctype html>
+
+<title>CodeMirror: YAML front matter mode</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../../doc/docs.css">
+
+<link rel="stylesheet" href="../../lib/codemirror.css">
+<script src="../../lib/codemirror.js"></script>
+<script src="../../addon/mode/overlay.js"></script>
+<script src="../markdown/markdown.js"></script>
+<script src="../gfm/gfm.js"></script>
+<script src="../yaml/yaml.js"></script>
+<script src="yaml-frontmatter.js"></script>
+<style>.CodeMirror { border-top: 1px solid #ddd; border-bottom: 1px solid #ddd; }</style>
+<div id=nav>
+  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+
+  <ul>
+    <li><a href="../../index.html">Home</a>
+    <li><a href="../../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/codemirror/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a href="../index.html">Language modes</a>
+    <li><a class=active href="#">YAML-Frontmatter</a>
+  </ul>
+</div>
+
+<article>
+<h2>YAML front matter mode</h2>
+<form><textarea id="code" name="code">
+---
+receipt:     Oz-Ware Purchase Invoice
+date:        2007-08-06
+customer:
+    given:   Dorothy
+    family:  Gale
+
+items:
+    - part_no:   A4786
+      descrip:   Water Bucket (Filled)
+      price:     1.47
+      quantity:  4
+
+    - part_no:   E1628
+      descrip:   High Heeled "Ruby" Slippers
+      size:       8
+      price:     100.27
+      quantity:  1
+
+bill-to:  &id001
+    street: |
+            123 Tornado Alley
+            Suite 16
+    city:   East Centerville
+    state:  KS
+
+ship-to:  *id001
+
+specialDelivery:  >
+    Follow the Yellow Brick
+    Road to the Emerald City.
+    Pay no attention to the
+    man behind the curtain.
+---
+
+GitHub Flavored Markdown
+========================
+
+Everything from markdown plus GFM features:
+
+## URL autolinking
+
+Underscores_are_allowed_between_words.
+
+## Strikethrough text
+
+GFM adds syntax to strikethrough text, which is missing from standard Markdown.
+
+~~Mistaken text.~~
+~~**works with other fomatting**~~
+
+~~spans across
+lines~~
+
+## Fenced code blocks (and syntax highlighting)
+
+```javascript
+for (var i = 0; i &lt; items.length; i++) {
+    console.log(items[i], i); // log them
+}
+```
+
+## Task Lists
+
+- [ ] Incomplete task list item
+- [x] **Completed** task list item
+
+## A bit of GitHub spice
+
+* SHA: be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
+* User@SHA ref: mojombo@be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
+* User/Project@SHA: mojombo/god@be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
+* \#Num: #1
+* User/#Num: mojombo#1
+* User/Project#Num: mojombo/god#1
+
+See http://github.github.com/github-flavored-markdown/.
+</textarea></form>
+
+<p>Defines a mode that parses
+a <a href="http://jekyllrb.com/docs/frontmatter/">YAML frontmatter</a>
+at the start of a file, switching to a base mode at the end of that.
+Takes a mode configuration option <code>base</code> to configure the
+base mode, which defaults to <code>"gfm"</code>.</p>
+
+    <script>
+      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {mode: "yaml-frontmatter"});
+    </script>
+
+  </article>
diff --git a/mode/yaml-frontmatter/yaml-frontmatter.js b/mode/yaml-frontmatter/yaml-frontmatter.js
@@ -0,0 +1,68 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function (mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"), require("../yaml/yaml"))
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror", "../yaml/yaml"], mod)
+  else // Plain browser env
+    mod(CodeMirror)
+})(function (CodeMirror) {
+
+  var START = 0, FRONTMATTER = 1, BODY = 2
+
+  // a mixed mode for Markdown text with an optional YAML front matter
+  CodeMirror.defineMode("yaml-frontmatter", function (config, parserConfig) {
+    var yamlMode = CodeMirror.getMode(config, "yaml")
+    var innerMode = CodeMirror.getMode(config, parserConfig && parserConfig.base || "gfm")
+
+    function curMode(state) {
+      return state.state == BODY ? innerMode : yamlMode
+    }
+
+    return {
+      startState: function () {
+        return {
+          state: START,
+          inner: CodeMirror.startState(yamlMode)
+        }
+      },
+      copyState: function (state) {
+        return {
+          state: state.state,
+          inner: CodeMirror.copyState(curMode(state), state.inner)
+        }
+      },
+      token: function (stream, state) {
+        if (state.state == START) {
+          if (stream.match(/---/, false)) {
+            state.state = FRONTMATTER
+            return yamlMode.token(stream, state.inner)
+          } else {
+            stream.state = BODY
+            state.inner = CodeMirror.startState(innerMode)
+            return innerMode.token(stream, state.inner)
+          }
+        } else if (state.state == FRONTMATTER) {
+          var end = stream.sol() && stream.match(/---/, false)
+          var style = yamlMode.token(stream, state.inner)
+          if (end) {
+            state.state = BODY
+            state.inner = CodeMirror.startState(innerMode)
+          }
+          return style
+        } else {
+          return innerMode.token(stream, state.inner)
+        }
+      },
+      innerMode: function (state) {
+        return {mode: curMode(state), state: state.inner}
+      },
+      blankLine: function (state) {
+        var mode = curMode(state)
+        if (mode.blankLine) return mode.blankLine(state.inner)
+      }
+    }
+  })
+})
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "codemirror",
-    "version":"5.9.0",
+    "version":"5.10.0",
     "main": "lib/codemirror.js",
     "description": "In-browser code editing made bearable",
     "license": "MIT",

diff --git a/test/test.js b/test/test.js
@@ -1657,6 +1657,8 @@ testCM("atomicMarker", function(cm) {
 testCM("selectionBias", function(cm) {
   cm.markText(Pos(0, 1), Pos(0, 3), {atomic: true});
   cm.setCursor(Pos(0, 2));
+  eqPos(cm.getCursor(), Pos(0, 1));
+  cm.setCursor(Pos(0, 2));
   eqPos(cm.getCursor(), Pos(0, 3));
   cm.setCursor(Pos(0, 2));
   eqPos(cm.getCursor(), Pos(0, 1));

diff --git a/test/vim_test.js b/test/vim_test.js
@@ -2148,9 +2148,18 @@ testVim('S_normal', function(cm, vim, helpers) {
   cm.setCursor(0, 1);
   helpers.doKeys('j', 'S');
   helpers.doKeys('<Esc>');
-  helpers.assertCursorAt(1, 0);
-  eq('aa\n\ncc', cm.getValue());
-}, { value: 'aa\nbb\ncc'});
+  helpers.assertCursorAt(1, 1);
+  eq('aa{\n  \ncc', cm.getValue());
+  helpers.doKeys('j', 'S');
+  eq('aa{\n  \n  ', cm.getValue());
+  helpers.assertCursorAt(2, 2);
+  helpers.doKeys('<Esc>');
+  helpers.doKeys('d', 'd', 'd', 'd');
+  helpers.assertCursorAt(0, 0);
+  helpers.doKeys('S');
+  is(vim.insertMode);
+  eq('', cm.getValue());
+}, { value: 'aa{\nbb\ncc'});
 testVim('blockwise_paste', function(cm, vim, helpers) {
   cm.setCursor(0, 0);
   helpers.doKeys('<C-v>', '3', 'j', 'l', 'y');
@@ -3110,6 +3119,25 @@ forEach(['zb','zz','zt','z-','z.','z<CR>'], function(e, idx){
     return new Array(500).join('\n');
   })()});
 });
+testVim('zb_to_bottom', function(cm, vim, helpers){
+  var lineNum = 250;
+  cm.setSize(600, 35*cm.defaultTextHeight());
+  cm.setCursor(lineNum, 0);
+  helpers.doKeys('z', 'b');
+  var scrollInfo = cm.getScrollInfo();
+  eq(scrollInfo.top + scrollInfo.clientHeight, cm.charCoords(Pos(lineNum, 0), 'local').bottom);
+}, { value: (function(){
+  return new Array(500).join('\n');
+})()});
+testVim('zt_to_top', function(cm, vim, helpers){
+  var lineNum = 250;
+  cm.setSize(600, 35*cm.defaultTextHeight());
+  cm.setCursor(lineNum, 0);
+  helpers.doKeys('z', 't');
+  eq(cm.getScrollInfo().top, cm.charCoords(Pos(lineNum, 0), 'local').top);
+}, { value: (function(){
+  return new Array(500).join('\n');
+})()});
 testVim('zb<zz', function(cm, vim, helpers){
   eq(zVals[0]<zVals[1], true);
 });
-Original file line number
+Diff line change
@@ Expand Up / @@ -165,7 +165,9 @@ CodeMirror.defineMode("sparql", function(config) { @@
             return context.col + (closing ? 0 : 1);
           else
             return context.indent + (closing ? 0 : indentUnit);
-        }
+        },
+        lineComment: "#"
       };
     });
@@ Expand Down @@