motherjones/grunt-html-smoosher — pull request #7 by osmestad (2013-12-16 14:50:55+00:00)
Title: Update test to show broken relative URL

Relative URLs in the files merged are not remapped, this will break images and fonts referenced (relatively) in included CSS files.

I guess to fix this would require keeping track of the path of the Html file related to the files to include, and going through those files and replacing all relative URLs.