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Specification: http://www.whatwg.org/specs/web-apps/current-work/ Multipage: http://www.whatwg.org/C#the-document-object Complete: http://www.whatwg.org/c#the-document-object Comment: Document.designMode should be a WebIDL enum Posted from: 173.48.81.109 User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:20.0) Gecko/20121203 Firefox/20.0
Then you get the "other values are ignored" behavior for free.
This is not possible unless we Web IDL gains ASCII case-insensitive enums.
Yeah, I hadn't realized this value was case-insensitive when I filed the bug.