Re: Getting at namespace-prefix used in source documen

substring-before(name(),':') 
or 

or to know the prefix used for http://www.example.com.ns use 
name(namespace::*[.='http://www.example.com.ns'])

in both cases what you actually get is the prefix used in the input
tree, which need not be (but always is on systems that I use) the same as
the prefix used in the original document. (xslt allowed xml parsers
_not_ to report original prefixes (in which case the system would make
up prefixes) but in practice all namespace parsers do report prefixes
9otherwise supporting namespsaces in attributes in xpath and xschema etc
would be very hard.

David