gruntjs/grunt-contrib-coffee — pull request #119 by kzar (2014-01-25 12:38:21+00:00)
Title: Fix sourceMappingURL paths.

This fixes issue #117, the rational is that you don't want the relative file path, you want a relative URL path. The sourceMappingURL is used by your browser to find the related map, not by anything else.

Let me know what you think,

Cheers, Dave.