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Section: http://www.whatwg.org/specs/web-apps/current-work/#isindex Comment: "isindex" is ignored inside a form Posted from: 98.210.108.185
This is the opposite of WebKit's old behavior. http://www.whatwg.org/specs/web-apps/current-work/multipage/tokenization.html#parsing-main-inbody in A start tag whose tag name is "isindex": "If the form element pointer is not null, then ignore the token." Firefox seems to respect <isindex> in either case. I haven't tested IE (which is likely the flaw in my logic).
IE ignores isindex when the form element pointer is set.
So WebKit's historical behavior is just dead-wrong then it seems. :)
moving to closed per Eric's comment