tenderlove/csspool — pull request #44 by JasonBarnabe (2013-02-21 03:47:43+00:00)
Title: @matches pseudoclass

http://dev.w3.org/csswg/selectors4/#matches

This is currently supported as :-prefix-any in browsers, per https://developer.mozilla.org/en-US/docs/CSS/:any, so it will support that too.