27057 2014-10-15 12:12:44 +0000 "supported by the user agent" 2019-03-29 23:07:45 +0000 1 1 1 Unclassified WHATWG MIME unspecified PC All RESOLVED WORKSFORME P2 normal Unsorted 1 zcorpan gphemsley mike sideshowbarker+mimespec oldest_to_newest 113194 0 zcorpan 2014-10-15 12:12:44 +0000 https://mimesniff.spec.whatwg.org/#supported-by-the-user-agent [[ supported by the user agent ]] What should happen with unknown parameters? Type not supported, or parameters ignored? Should the empty string be supported? Before or after trimming whitespace? I think we should align with what Gecko does for http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3252 113195 1 zcorpan 2014-10-15 12:27:55 +0000 Also see http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3254 https://html.spec.whatwg.org/multipage/scripting.html#scriptingLanguages and https://html.spec.whatwg.org/multipage/semantics.html#the-style-element say that unknown parameters means unsupported type, though. What about just a trailing ; ? 113199 2 zcorpan 2014-10-15 12:45:56 +0000 http://w3c-test.org/images/green-256x256.png?pipe=header(Content-Type,text/html%3Bfoo%3Dbar) shows that browsers ignore unknown parameters in Content-Type HTTP header. 129723 3 gphemsley 2019-03-29 23:07:45 +0000 A lot of work has been done on parameters since this bug was filed. If there are still remaining concerns, please file them as GitHub issues.