gruntjs/grunt-contrib-coffee — pull request #161 by ipy (2014-08-26 10:53:20+00:00)
Title: Normalize Windows paths with forward slashes for sourceRoot

On Windows, the sourcemap file will be generated like

`sourceRoot: "..\coffee\"`

other task like `grunt-contrib-uglify` which imports that sourcemap file will refer to a wrong sourcemap path.