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subexpression confusion/problem? #743

Closed
waynedpj opened this Issue · 3 comments

3 participants

@waynedpj

ahoy all,

as you can see from this simple JSFiddle i am having a problem using the result of a helper in a sub expression as input to another helper. with the following helpers:

Handlebars.registerHelper("findRoot", (path, helperData) ->                       
                          newRoot = path.split("/")[0..1].join("/")
                          return new Handlebars.SafeString(newRoot))

Handlebars.registerHelper("rebase", (path, root, helperData) ->
                          return new Handlebars.SafeString(root + path))

template:

    {{#each pages}}
        findRoot = {{findRoot base}}</br>
        rebase = {{rebase ID.path (findRoot base) option=false}}</br>
    {{/each}}

and context:

context = 
    pages: [
            {base: "/Root/A", ID: {path: "/A/1"}},
            {base: "/Root/B", ID: {path: "/B/2"}}
            ]

the return value of the findRoot helper when used as a sub expression is being fed as an object to rebase instead of as a string. note that when findRoot is run normally (not as a sub expression) the return value is a string and everyone is happy.

i have tried with/without Handlebars.SafeString and no luck. i debugged it as far as the Handlebars compiler which builds the stack/depth stuff under the hood and did not see anything obviously amiss.

it seems like for some reason the entire ID object is getting passed in where i assume the string returned from findRoot should be?!

while i realize that i most likely i am not using Handlebars correctly, i have been digging at this for quite a bit and am beginning to think that maybe there is something going on here, like a bug?

thanks in advance for any help.

@jenseng

yup, this is a bug. it's another stackN stomping issue along the lines of #748 (but different root cause). the generated javascript is incorrect...

given {{foo a.prop (bar c)}}, you get:

(function() {
  var template = Handlebars.template, templates = Handlebars.templates = Handlebars.templates || {};
templates['template.txt'] = template({"compiler":[5,">= 2.0.0"],"main":function(depth0,helpers,partials,data) {
  var stack1, helper, helperMissing=helpers.helperMissing, escapeExpression=this.escapeExpression, buffer = "";
  stack1 = (helper = helpers.bar || (depth0 && depth0.bar) || helperMissing,helper.call(depth0, (depth0 && depth0.c), {"name":"bar","hash":{},"data":data}));
  return buffer + escapeExpression((helper = helpers.foo || (depth0 && depth0.foo) || helperMissing,helper.call(depth0, ((stack1 = (depth0 && depth0.a)),stack1 == null || stack1 === false ? stack1 : stack1.prop), stack1, {"name":"foo","hash":{},"data":data})))
    + "\n";
},"useData":true});
})();

stack1 gets assigned to the return value of bar, but on the very next line it gets reassigned to a. so the subexpression gets lost. seems looks like the stack is getting popped prematurely somewhere.

note that it doesn't happen if you don't reference subproperties, e.g. this works fine {{foo a (bar c)}}

@jenseng

it's worth noting that since the stackN variable stuff is inlined for subproperties, it works if you reverse the order, i.e. {{foo (bar c) a.prop}} works as you would expect

@kpdecker kpdecker closed this in 55782f0
@kpdecker
Collaborator

Released in 2.0.0-alpha.2

@kkirsche kkirsche referenced this issue from a commit in kkirsche/rubyloco.com
@kkirsche kkirsche Update handlebars from 1.0.0-rc.4 to 3.0.0
Update handlebars from 1.0.0-rc.4 to 3.0.0

## v3.0.0 - February 10th, 2015
- [#941](wycats/handlebars.js#941) - Add support for dynamic partial names ([@kpdecker](https://api.github.com/users/kpdecker))
- [#940](wycats/handlebars.js#940) - Add missing reserved words so compiler knows to use array syntax: ([@mattflaschen](https://api.github.com/users/mattflaschen))
- [#938](wycats/handlebars.js#938) - Fix example using #with helper ([@diwo](https://api.github.com/users/diwo))
- [#930](wycats/handlebars.js#930) - Add parent tracking and mutation to AST visitors ([@kpdecker](https://api.github.com/users/kpdecker))
- [#926](wycats/handlebars.js#926) - Depthed lookups fail when program duplicator runs ([@kpdecker](https://api.github.com/users/kpdecker))
- [#918](wycats/handlebars.js#918) - Add instructions for 'spec/mustache' to CONTRIBUTING.md, fix a few typos ([@oneeman](https://api.github.com/users/oneeman))
- [#915](wycats/handlebars.js#915) - Ast update ([@kpdecker](https://api.github.com/users/kpdecker))
- [#910](wycats/handlebars.js#910) - Different behavior of {{@last}} when {{#each}} in {{#each}} ([@zordius](https://api.github.com/users/zordius))
- [#907](wycats/handlebars.js#907) - Implement named helper variable references ([@kpdecker](https://api.github.com/users/kpdecker))
- [#906](wycats/handlebars.js#906) - Add parser support for block params ([@mmun](https://api.github.com/users/mmun))
- [#903](wycats/handlebars.js#903) - Only provide aliases for multiple use calls ([@kpdecker](https://api.github.com/users/kpdecker))
- [#902](wycats/handlebars.js#902) - Generate Source Maps ([@kpdecker](https://api.github.com/users/kpdecker))
- [#901](wycats/handlebars.js#901) - Still escapes with noEscape enabled on isolated Handlebars environment ([@zedknight](https://api.github.com/users/zedknight))
- [#896](wycats/handlebars.js#896) - Simplify BlockNode by removing intermediate MustacheNode ([@mmun](https://api.github.com/users/mmun))
- [#892](wycats/handlebars.js#892) - Implement parser for else chaining of helpers ([@kpdecker](https://api.github.com/users/kpdecker))
- [#889](wycats/handlebars.js#889) - Consider extensible parser API ([@kpdecker](https://api.github.com/users/kpdecker))
- [#887](wycats/handlebars.js#887) - Handlebars.noConflict() option? ([@bradvogel](https://api.github.com/users/bradvogel))
- [#886](wycats/handlebars.js#886) - Add SafeString to context (or use duck-typing) ([@dominicbarnes](https://api.github.com/users/dominicbarnes))
- [#870](wycats/handlebars.js#870) - Registering undefined partial throws exception. ([@max-b](https://api.github.com/users/max-b))
- [#866](wycats/handlebars.js#866) - comments don't respect whitespace control ([@75lb](https://api.github.com/users/75lb))
- [#863](wycats/handlebars.js#863) - + jsDelivr CDN info ([@tomByrer](https://api.github.com/users/tomByrer))
- [#858](wycats/handlebars.js#858) - Disable new default auto-indent at included partials ([@majodev](https://api.github.com/users/majodev))
- [#856](wycats/handlebars.js#856) - jspm compatibility ([@MajorBreakfast](https://api.github.com/users/MajorBreakfast))
- [#805](wycats/handlebars.js#805) - Request: "strict" lookups ([@nzakas](https://api.github.com/users/nzakas))

- Export the default object for handlebars/runtime - 5594416
- Lookup partials when undefined - 617dd57

Compatibility notes:
- Runtime breaking changes. Must match 3.x runtime and precompiler.
- The AST has been upgraded to a public API.
  - There are a number of changes to this, but the format is now documented in docs/compiler-api.md
  - The Visitor API has been expanded to support mutation and provide a base implementation
- The `JavaScriptCompiler` APIs have been formalized and documented. As part of the sourcemap handling these should be updated to return arrays for concatenation.
- `JavaScriptCompiler.namespace` has been removed as it was unused.
- `SafeString` is now duck typed on `toHTML`

New Features:
- noConflict
- Source Maps
- Block Params
- Strict Mode
- @last and other each changes
- Chained else blocks
- @data methods can now have helper parameters passed to them
- Dynamic partials

[Commits](wycats/handlebars.js@v2.0.0...v3.0.0)

## v2.0.0 - September 1st, 2014
- Update jsfiddle to 2.0.0-beta.1 - 0670f65
- Add contrib note regarding handlebarsjs.com docs - 4d17e3c
- Play nice with gemspec version numbers - 64d5481

[Commits](wycats/handlebars.js@v2.0.0-beta.1...v2.0.0)

## v2.0.0-beta.1 - August 26th, 2014
- [#787](wycats/handlebars.js#787) - Remove whitespace surrounding standalone statements ([@kpdecker](https://api.github.com/users/kpdecker))
- [#827](wycats/handlebars.js#827) - Render false literal as “false” ([@scoot557](https://api.github.com/users/scoot557))
- [#767](wycats/handlebars.js#767) - Subexpressions bug with hash and context ([@evensoul](https://api.github.com/users/evensoul))
- Changes to 0/undefined handling
  - [#731](wycats/handlebars.js#731) - Strange behavior for {{#foo}} {{bar}} {{/foo}} when foo is 0 ([@kpdecker](https://api.github.com/users/kpdecker))
  - [#820](wycats/handlebars.js#820) - strange behavior for {{foo.bar}} when foo is 0 or null or false ([@zordius](https://api.github.com/users/zordius))
  - [#837](wycats/handlebars.js#837) - Strange input for custom helper ( foo.bar == false when foo is undefined ) ([@zordius](https://api.github.com/users/zordius))
- [#819](wycats/handlebars.js#819) - Implement recursive field lookup ([@kpdecker](https://api.github.com/users/kpdecker))
- [#764](wycats/handlebars.js#764) - This reference not working for helpers ([@kpdecker](https://api.github.com/users/kpdecker))
- [#773](wycats/handlebars.js#773) - Implicit parameters in {{#each}} introduces a peculiarity in helpers calling convention  ([@Bertrand](https://api.github.com/users/Bertrand))
- [#783](wycats/handlebars.js#783) - helperMissing and consistency for different expression types ([@ErisDS](https://api.github.com/users/ErisDS))
- [#795](wycats/handlebars.js#795) - Turn the precompile script into a wrapper around a module. ([@jwietelmann](https://api.github.com/users/jwietelmann))
- [#823](wycats/handlebars.js#823) - Support inverse sections on the with helper ([@dan-manges](https://api.github.com/users/dan-manges))
- [#834](wycats/handlebars.js#834) - Refactor blocks, programs and inverses ([@mmun](https://api.github.com/users/mmun))
- [#852](wycats/handlebars.js#852) - {{foo~}} space control behavior is different from older version ([@zordius](https://api.github.com/users/zordius))
- [#835](wycats/handlebars.js#835) - Templates overwritten if file is loaded twice

- Expose escapeExpression on the root object - 980c38c
- Remove nested function eval in blockHelperMissing - 6f22ec1
- Fix compiler program de-duping - 9e3f824

Compatibility notes:
- The default build now outputs a generic UMD wrapper. This should be transparent change but may cause issues in some environments.
- Runtime compatibility breaks in both directions. Ensure that both compiler and client are upgraded to 2.0.0-beta.1 or higher at the same time.
  - `programWithDepth` has been removed an instead an array of context values is passed to fields needing depth lookups.
- `false` values are now printed to output rather than silently dropped
- Lines containing only block statements and whitespace are now removed. This matches the Mustache spec but may cause issues with code that expects whitespace to exist but would not otherwise.
- Partials that are standalone will now indent their rendered content
- `AST.ProgramNode`'s signature has changed.
- Numerious methods/features removed from psuedo-API classes
  - `JavaScriptCompiler.register`
  - `JavaScriptCompiler.replaceStack` no longer supports non-inline replace
  - `Compiler.disassemble`
  - `DECLARE` opcode
  - `strip` opcode
  - `lookup` opcode
  - Content nodes may have their `string` values mutated over time. `original` field provides the unmodified value.
- Removed unused `Handlebars.registerHelper` `inverse` parameter
- `each` helper requires iterator parameter

[Commits](wycats/handlebars.js@v2.0.0-alpha.4...v2.0.0-beta.1)

## v2.0.0-alpha.4 - May 19th, 2014
- Expose setup wrappers for compiled templates - 3638874

[Commits](wycats/handlebars.js@v2.0.0-alpha.3...v2.0.0-alpha.4)

## v2.0.0-alpha.3 - May 19th, 2014
- [#797](wycats/handlebars.js#797) - Pass full helper ID to helperMissing when options are provided ([@tomdale](https://api.github.com/users/tomdale))
- [#793](wycats/handlebars.js#793) - Ensure isHelper is coerced to a boolean ([@mmun](https://api.github.com/users/mmun))
- Refactor template init logic - 085e5e1

[Commits](wycats/handlebars.js@v2.0.0-alpha.2...v2.0.0-alpha.3)

## v2.0.0-alpha.2 - March 6th, 2014
- [#756](wycats/handlebars.js#756) - fix bug in IE<=8 (no Array::map), closes #751 ([@jenseng](https://api.github.com/users/jenseng))
- [#749](wycats/handlebars.js#749) - properly handle multiple subexpressions in the same hash, fixes #748 ([@jenseng](https://api.github.com/users/jenseng))
- [#743](wycats/handlebars.js#743) - subexpression confusion/problem? ([@waynedpj](https://api.github.com/users/waynedpj))
- [#746](wycats/handlebars.js#746) - [CLI] support `handlebars --version` ([@apfelbox](https://api.github.com/users/apfelbox))
- [#747](wycats/handlebars.js#747) - updated grunt-saucelabs, failing tests revealed ([@Jonahss](https://api.github.com/users/Jonahss))
- Make JSON a requirement for the compiler. - 058c0fb
- Temporarily kill the AWS publish CI step - 8347ee2

Compatibility notes:
- A JSON polyfill is required to run the compiler under IE8 and below. It's recommended that the precompiler be used in lieu of running the compiler on these legacy environments.

[Commits](wycats/handlebars.js@v2.0.0-alpha.1...v2.0.0-alpha.2)

## v2.0.0-alpha.1 - February 10th, 2014
- [#182](wycats/handlebars.js#182) - Allow passing hash parameters to partials ([@kpdecker](https://api.github.com/users/kpdecker))
- [#392](wycats/handlebars.js#392) - Access to root context in partials and helpers ([@kpdecker](https://api.github.com/users/kpdecker))
- [#472](wycats/handlebars.js#472) - Helpers cannot have decimal parameters ([@kayleg](https://api.github.com/users/kayleg))
- [#569](wycats/handlebars.js#569) - Unable to lookup array values using @index ([@kpdecker](https://api.github.com/users/kpdecker))
- [#491](wycats/handlebars.js#491) - For nested helpers: get the @ variables of the outer helper from the inner one ([@kpdecker](https://api.github.com/users/kpdecker))
- [#669](wycats/handlebars.js#669) - Ability to unregister a helper ([@dbachrach](https://api.github.com/users/dbachrach))
- [#730](wycats/handlebars.js#730) - Raw block helpers ([@kpdecker](https://api.github.com/users/kpdecker))
- [#634](wycats/handlebars.js#634) - It would be great to have the helper name passed to `blockHelperMissing` ([@kpdecker](https://api.github.com/users/kpdecker))
- [#729](wycats/handlebars.js#729) - Convert template spec to object literal ([@kpdecker](https://api.github.com/users/kpdecker))

- [#658](wycats/handlebars.js#658) - Depthed helpers do not work after an upgrade from 1.0.0 ([@xibxor](https://api.github.com/users/xibxor))
- [#671](wycats/handlebars.js#671) - Crashes on no-parameter {{#each}} ([@stepancheg](https://api.github.com/users/stepancheg))
- [#689](wycats/handlebars.js#689) - broken template precompilation ([@AAS](https://api.github.com/users/AAS))
- [#698](wycats/handlebars.js#698) - Fix parser generation under windows ([@osiris43](https://api.github.com/users/osiris43))
- [#699](wycats/handlebars.js#699) - @DATA not compiles to invalid JS in stringParams mode ([@kpdecker](https://api.github.com/users/kpdecker))
- [#705](wycats/handlebars.js#705) - 1.3.0 can not be wrapped in an IIFE ([@craigteegarden](https://api.github.com/users/craigteegarden))
- [#706](wycats/handlebars.js#706) - README: Use with helper instead of relying on blockHelperMissing ([@scottgonzalez](https://api.github.com/users/scottgonzalez))

- [#700](wycats/handlebars.js#700) - Remove redundant conditions ([@blakeembrey](https://api.github.com/users/blakeembrey))
- [#704](wycats/handlebars.js#704) - JavaScript Compiler Cleanup ([@blakeembrey](https://api.github.com/users/blakeembrey))

Compatibility notes:
- `helperMissing` helper no longer has the indexed name argument. Helper name is now available via `options.name`.
- Precompiler output has changed, which breaks compatibility with prior versions of the runtime and precompiled output.
- `JavaScriptCompiler.compilerInfo` now returns generic objects rather than javascript source.
- AST changes
  - INTEGER -> NUMBER
  - Additional PartialNode hash parameter
  - New RawBlockNode type
- Data frames now have a `_parent` field. This is internal but is enumerable for performance/compatability reasons.

[Commits](wycats/handlebars.js@v1.3.0...v2.0.0-alpha.1)

## v1.3.0 - January 1st, 2014
- [#690](wycats/handlebars.js#690) - Added support for subexpressions ([@machty](https://api.github.com/users/machty))
- [#696](wycats/handlebars.js#696) - Fix for reserved keyword "default" ([@nateirwin](https://api.github.com/users/nateirwin))
- [#692](wycats/handlebars.js#692) - add line numbers to nodes when parsing ([@fivetanley](https://api.github.com/users/fivetanley))
- [#695](wycats/handlebars.js#695) - Pull options out from param setup to allow easier extension ([@blakeembrey](https://api.github.com/users/blakeembrey))
- [#694](wycats/handlebars.js#694) - Make the environment reusable ([@blakeembrey](https://api.github.com/users/blakeembrey))
- [#636](wycats/handlebars.js#636) - Print line and column of errors ([@sgronblo](https://api.github.com/users/sgronblo))
- Use literal for data lookup - c1a93d3
- Add stack handling sanity checks - cd885bf
- Fix stack id "leak" on replaceStack - ddfe457
- Fix incorrect stack pop when replacing literals - f4d337d

[Commits](wycats/handlebars.js@v1.2.1...v1.3.0)

## v1.2.1 - December 26th, 2013
- [#684](wycats/handlebars.js#684) - Allow any number of trailing characters for valid JavaScript variable ([@blakeembrey](https://api.github.com/users/blakeembrey))
- [#686](wycats/handlebars.js#686) - Falsy AMD module names in version 1.2.0 ([@kpdecker](https://api.github.com/users/kpdecker))

[Commits](wycats/handlebars.js@v1.2.0...v1.2.1)

## v1.2.0 - December 23rd, 2013
- [#675](wycats/handlebars.js#675) - Cannot compile empty template for partial ([@erwinw](https://api.github.com/users/erwinw))
- [#677](wycats/handlebars.js#677) - Triple brace statements fail under IE ([@hamzaCM](https://api.github.com/users/hamzaCM))
- [#655](wycats/handlebars.js#655) - Loading Handlebars using bower ([@niki4810](https://api.github.com/users/niki4810))
- [#657](wycats/handlebars.js#657) - Fixes issue where cli compiles non handlebars templates ([@chrishoage](https://api.github.com/users/chrishoage))
- [#681](wycats/handlebars.js#681) - Adds in-browser testing and Saucelabs CI ([@kpdecker](https://api.github.com/users/kpdecker))
- [#661](wycats/handlebars.js#661) - Add @first and @index to #each object iteration ([@cgp](https://api.github.com/users/cgp))
- [#650](wycats/handlebars.js#650) - Handlebars is MIT-licensed ([@thomasboyt](https://api.github.com/users/thomasboyt))
- [#641](wycats/handlebars.js#641) - Document ember testing process ([@kpdecker](https://api.github.com/users/kpdecker))
- [#662](wycats/handlebars.js#662) - handlebars-source 1.1.2 is missing from RubyGems.
- [#656](wycats/handlebars.js#656) - Expose COMPILER_REVISION checks as a hook ([@machty](https://api.github.com/users/machty))
- [#668](wycats/handlebars.js#668) - Consider publishing handlebars-runtime as a separate module on npm ([@dlmanning](https://api.github.com/users/dlmanning))
- [#679](wycats/handlebars.js#679) - Unable to override invokePartial ([@mattbrailsford](https://api.github.com/users/mattbrailsford))
- [#646](wycats/handlebars.js#646) - Fix "\\{{" immediately following "\{{" ([@dmarcotte](https://api.github.com/users/dmarcotte))
- Allow extend to work with non-prototyped objects - eb53f2e
- Add JavascriptCompiler public API tests - 1a751b2
- Add AST test coverage for more complex paths - ddea5be
- Fix handling of boolean escape in MustacheNode - b4968bb

Compatibility notes:
- `@index` and `@first` are now supported for `each` iteration on objects
- `Handlebars.VM.checkRevision` and `Handlebars.JavaScriptCompiler.prototype.compilerInfo` now available to modify the version checking behavior.
- Browserify users may link to the runtime library via `require('handlebars/runtime')`

[Commits](wycats/handlebars.js@v1.1.2...v1.2.0)

## v1.1.2 - November 5th, 2013

- [#645](wycats/handlebars.js#645) - 1.1.1 fails under IE8 ([@kpdecker](https://api.github.com/users/kpdecker))
- [#644](wycats/handlebars.js#644) - Using precompiled templates (AMD mode) with handlebars.runtime 1.1.1 ([@fddima](https://api.github.com/users/fddima))

- Add simple binary utility tests - 96a45a4
- Fix empty string compilation - eea708a

[Commits](wycats/handlebars.js@v1.1.1...v1.1.2)

## v1.1.1 - November 4th, 2013

- [#642](wycats/handlebars.js#642) - handlebars 1.1.0 are broken with nodejs

- Fix release notes link - 17ba258

[Commits](wycats/handlebars.js@v1.1.0...v1.1.1)

## v1.1.0 - November 3rd, 2013

- [#628](wycats/handlebars.js#628) - Convert code to ES6 modules ([@kpdecker](https://api.github.com/users/kpdecker))
- [#336](wycats/handlebars.js#336) - Add whitespace control syntax ([@kpdecker](https://api.github.com/users/kpdecker))
- [#535](wycats/handlebars.js#535) - Fix for probable JIT error under Safari ([@sorentwo](https://api.github.com/users/sorentwo))
- [#483](wycats/handlebars.js#483) - Add first and last @ vars to each helper ([@denniskuczynski](https://api.github.com/users/denniskuczynski))
- [#557](wycats/handlebars.js#557) - `\\{{foo}}` escaping only works in some situations ([@dmarcotte](https://api.github.com/users/dmarcotte))
- [#552](wycats/handlebars.js#552) - Added BOM removal flag. ([@blessenm](https://api.github.com/users/blessenm))
- [#543](wycats/handlebars.js#543) - publish passing master builds to s3 ([@fivetanley](https://api.github.com/users/fivetanley))

- [#608](wycats/handlebars.js#608) - Add `includeZero` flag to `if` conditional
- [#498](wycats/handlebars.js#498) - `Handlebars.compile` fails on empty string although a single blank works fine
- [#599](wycats/handlebars.js#599) - lambda helpers only receive options if used with arguments
- [#592](wycats/handlebars.js#592) - Optimize array and subprogram performance
- [#571](wycats/handlebars.js#571) - uglify upgrade breaks compatibility with older versions of node
- [#587](wycats/handlebars.js#587) - Partial inside partial breaks?

Compatibility notes:
- The project now includes separate artifacts for AMD, CommonJS, and global objects.
  - AMD: Users may load the bundled `handlebars.amd.js` or `handlebars.runtime.amd.js` files or load individual modules directly. AMD users should also note that the handlebars object is exposed via the `default` field on the imported object. This [gist](https://gist.github.com/wycats/7417be0dc361a69d5916) provides some discussion of possible compatibility shims.
  - CommonJS/Node: Node loading occurs as normal via `require`
  - Globals: The `handlebars.js` and `handlebars.runtime.js` files should behave in the same manner as the v1.0.12 / 1.0.0 release.
- Build artifacts have been removed from the repository. [npm][npm], [components/handlebars.js][components], [cdnjs][cdnjs], or the [builds page][builds-page] should now be used as the source of built artifacts.
- Context-stored helpers are now always passed the `options` hash. Previously no-argument helpers did not have this argument.

[Commits](wycats/handlebars.js@v1.0.12...v1.1.0)

## v1.0.12 / 1.0.0 - May 31 2013

- [#515](wycats/handlebars.js#515) - Add node require extensions support ([@jjclark1982](https://github.com/jjclark1982))
- [#517](wycats/handlebars.js#517) - Fix amd precompiler output with directories ([@blessenm](https://github.com/blessenm))
- [#433](wycats/handlebars.js#433) - Add support for unicode ids
- [#469](wycats/handlebars.js#469) - Add support for `?` in ids
- [#534](wycats/handlebars.js#534) - Protect from object prototype modifications
- [#519](wycats/handlebars.js#519) - Fix partials with . name ([@jamesgorrie](https://github.com/jamesgorrie))
- [#519](wycats/handlebars.js#519) - Allow ID or strings in partial names
- [#437](wycats/handlebars.js#437) - Require matching brace counts in escaped expressions
- Merge passed partials and helpers with global namespace values
- Add support for complex ids in @data references
- Docs updates

Compatibility notes:
- The parser is now stricter on `{{{`, requiring that the end token be `}}}`. Templates that do not
  follow this convention should add the additional brace value.
- Code that relies on global the namespace being muted when custom helpers or partials are passed will need to explicitly pass an `undefined` value for any helpers that should not be available.
- The compiler version has changed. Precompiled templates with 1.0.12 or higher must use the 1.0.0 or higher runtime.

[Commits](wycats/handlebars.js@v1.0.11...v1.0.12)

## v1.0.11 / 1.0.0-rc4 - May 13 2013

- [#458](wycats/handlebars.js#458) - Fix `./foo` syntax ([@jpfiset](https://github.com/jpfiset))
- [#460](wycats/handlebars.js#460) - Allow `:` in unescaped identifers ([@jpfiset](https://github.com/jpfiset))
- [#471](wycats/handlebars.js#471) - Create release notes (These!)
- [#456](wycats/handlebars.js#456) - Allow escaping of `\\`
- [#211](wycats/handlebars.js#211) - Fix exception in `escapeExpression`
- [#375](wycats/handlebars.js#375) - Escape unicode newlines
- [#461](wycats/handlebars.js#461) - Do not fail when compiling `""`
- [#302](wycats/handlebars.js#302) - Fix sanity check in knownHelpersOnly mode
- [#369](wycats/handlebars.js#369) - Allow registration of multiple helpers and partial by passing definition object
- Add bower package declaration ([@DevinClark](https://github.com/DevinClark))
- Add NuSpec package declaration ([@MikeMayer](https://github.com/MikeMayer))
- Handle empty context in `with` ([@thejohnfreeman](https://github.com/thejohnfreeman))
- Support custom template extensions in CLI ([@matteoagosti](https://github.com/matteoagosti))
- Fix Rhino support ([@broady](https://github.com/broady))
- Include contexts in string mode ([@leshill](https://github.com/leshill))
- Return precompiled scripts when compiling to AMD ([@JamesMaroney](https://github.com/JamesMaroney))
- Docs updates ([@iangreenleaf](https://github.com/iangreenleaf), [@gilesbowkett](https://github.com/gilesbowkett), [@utkarsh2012](https://github.com/utkarsh2012))
- Fix `toString` handling under IE and browserify ([@tommydudebreaux](https://github.com/tommydudebreaux))
- Add program metadata
daf67c9
@kkirsche kkirsche referenced this issue in rubyloco/rubyloco.com
Merged

Update handlebars from 1.0.0-rc.4 to 3.0.0 #16

@dvrylc dvrylc referenced this issue from a commit
Commit has since been removed from the repository and is no longer available.
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