netzpirat/guard-coffeescript — pull request #30 by rogueg (2014-04-20 07:01:38+00:00)
Title: Update source-map comment to match the spec.

Because of IE compatibility issues, the magic comment for sourcemaps was
changed from "//@" to "//#". The most recent version of Chrome no longer
supports the old format.

https://groups.google.com/forum/#!topic/mozilla.dev.js-sourcemap/4uo7Z5nTfUY