We should disallow elem.setAttribute("xmlns", "..."), it leads to problems for serializing with duplicate attributes (even though they're in a separate namespace) when there is also an xmlns attribute in the http://www.w3.org/XML/1998/namespace namespace.
*** This bug has been marked as a duplicate of 315805 ***
Status: NEW → RESOLVED
Last Resolved: 13 years ago
Resolution: --- → DUPLICATE
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