> I have a selected a nodeset in a variable($nodeset) and now I 
> would compare this nodeset to an node and I would detect if this node 
> included in the nodeset.
> 
This is surprisingly difficult. Saxon and xt both provide intersection() as
an extension function. The only way of doing it within the standard is to
rely on union:

count($nodeset) = count($nodeset | $node)

will be true iff $node is a member of $nodeset.

Mike Kay


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