symfony/symfony — pull request #2365 by lsmith77 (2011-10-09 10:59:37+00:00)
Title: anything in front of ;q= is part of the mime type, anything after may be 

anything in front of ;q= is part of the mime type, anything after may be ignored

see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1