nathos/sass-textmate-bundle — pull request #22 by mannieschumpert (2013-03-26 14:00:41+00:00)
Title: Add mixin shorthand statement.

I *really* wanted to be able to add highlighting to mixin shorthand declarations (i.e. `=mixin`, `+mixin`. This regex matches them, and also insures that math and equality operations are not matched.
*Note: I'm not savvy in regards to naming conventions for syntax matching statements, so please change the name of this statement if need be.*