Hi Michael,
Thank you for your reply. It's interesting that until XPath 3.0, we could
*construct* empty-namespace elements inside non-empty namespace elements
(via the xmlns="" declaration), but we couldn't *query* them without
resorting to the somewhat means of indirect wildcards (e.g.,
XML doesn't allow you to bind a prefix to the thing-that-is-not-a-namespace.
With XML namespaces 1.1, the declaration xmlns:x="" doesn't bind x to anything,
it unbinds x. Within the scope of this (un)declaratiion, the prefix x cannot be
used.
It makes sense for XQuery to do the same thing. The
