Emblem: Handlebars + Indentation + Ember-compatibility

Emblem.js is an indentation-based templating language that compiles to Handlebars. It is therefore

1. Efficiently/easily precompilable
2. Compilable in the browser
3. Fully compatible with Ember.js's auto-updating templates
4. Way more fun to write/maintain than {{mustached}}'d HTML

Check out the Emblem.js docs site http://www.emblemjs.com.

Syntax Examples

• Read the syntax documentation.
• Check out this JSBin.
• Check out this demo of an ember-rails site with Emblem enabled.

Using Emblem in your application

You can use Emblem to compile either to vanilla Handlebars or Emberized Handlebars. Let's assume you're compiling to Emberized Handlebars for use with an Ember app.

Compiling in the Browser

Follow the pattern in this JSBin:

1. Include Handlebars
2. Include Emblem
3. Include Ember

If you have a recent enough version of Ember, all the Emblem code you put into <script type="text/x-emblem"> tags will get compiled and stripped out of the DOM. If you're using an out-of-date Ember, you can trigger this to happen manually before app initialization via

Ember.onLoad('application', Emblem.compileScriptTags);

Via Rails 3.1+

Add the following to your Gemfile:

gem 'emblem-rails'

emblem-rails presently depends on ember-rails. With these two gems, any templates ending in .emblem will be (pre)compiled with Emblem.js.

Also, check out the demo app which uses the above configuration.

Via Rake Pipeline

Coming extremely soon.

All Emblem Plugins

1. emblem-rails
2. barber-emblem, a Precompilation library for Ruby (used in ember-rails)
3. emblem-brunch, Emblem support for Brunch.io
4. Mimosa (support for Emblem since v 0.10.1)

Building Emblem.js

Clone the repo, then run:

bundle
rake

This will also automatically run the test suite.

Syntax Highlighting

For now, please refer to syntax highlighting solutions for Slim, which is not much different from Ember's. At some point, we'll have something even more custom tailored to Emblem (feel free to take a swing at it and send in a PR).

Vim users with Slim syntax highlighting can set this in their .vimrcs:

au BufNewFile,BufRead *.emblem set filetype=slim

TODO / Contribute

• Syntax suggestions / improvements
• Syntax highlighting
• Rake pipeline
• Plugins for all sorts of frameworks
• Refactor the code to be cross-platform (browser/Node/etc). It currently is now, it's just mad ugly.

Pull Requests absolutely welcome and encouraged, just don't send me non-trivial changes without the test cases to back them up.