[e] (0) I told people when we first added this regular expression that it would be a maintenance nightmare, and sure enough, it's been the source of an unending stream of minor bugs.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=26770
Affected topics: HTML

git-svn-id: https://svn.whatwg.org/webapps@8802 340c8d12-0b0e-0410-8428-c7bf67bfef74