Declaring the XML namespace

This is probably the kind of thing that only interests conformance
testers, but:

With the following XML document, I get three different results from
different parsers.

<doc xmlns:xml="http://www.w3.org/XML/1998/namespace"/>

Crimson rejects it.
AElfred accepts it, and doesn't notify the namespace to the SAX2
ContentHandler.
Piccolo accepts it, and does notify the namespace to the SAX2
ContentHandler.

Any opinions on which is right?

Michael Kay
Software AG
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