This is actually three bugs which are related: Due to a typo, the code in isEqualNode doesn't check if the attributes differ. When fixing this, one of the DOM3 tests started failing. This is because the tests load documents by loading them in a frame/iframe (I'm not sure) and then cloning the document manually. In this code, there's a call to setAttributeNS which sets the namespaceURI to 'null', so it won't be the same as the original. When fixing the setAttributeNS bug, run-webkit-tests started crashing. This is because a call to setAttributeNS to set the src on a <script> element would now result in the url being loaded (That wasn't the case before when the namespaceURI always was null) and we don't support loading external scripts from viewless documents (documents created by document.implementation.createDocument) While we do want to load external scripts later (for xbl according to hyatt) I just made it return immediatly when there's no part available.
Created attachment 4678 [details] Patch I don't really like the name valueToStringWithNullCheck but I couldn't come up with any better...
*** Bug 5724 has been marked as a duplicate of this bug. ***
Comment on attachment 4678 [details] Patch We talked about this on IRC. Anders is going to file a bug about scripts not being evaluated on viewless documents. Otherwise this looks fine to me.
Mass moving XML DOM bugs to the "DOM" Component.