alexo/wro4j — pull request #77 by computerlove (2012-11-30 12:14:28+00:00)
Title: Issue 480: Css url rewriting doesn't compute replace properly font rule with multiple url's

When looking at the diff in Github it looks like AbstractCssUrlRewritingProcessor is replaced in its entirety.
What is changed is really the regex. The old pattern matched the whole declaration of the css rule. For all cases except FallbackCssDataUriProcessor this was overkill.

In order to support FallbackCssDataUriProcessor AbstractCssUrlRewritingProcessor now has protected methods for getting the regexpattern-key and the index of the necessary groups.