The xsd:string restriction in <AttributeValue> element seems to mean that only
exact string matches to values or returned attributes are possible, ie. no
regex.

This is a point made in the section on Attibute configuration on the data type
of AttributeValue.  

It would be nice to have support for regular expressesion matches so that
patterns could be used for attribute matches.  For example, instead of having
to list "member@voname", "owner@voname", and "admin@voname" in the
AttributeValue list, being able to like "*@voname" would save some typing.

If there are more appropriate ways to achieve this, adding an example to the
documentation would be helpful.

For reference see point "3" in this section:

http://gridshib.globus.org/docs/gridshib-gt-0.5.1/admin-index.html#attr-acl-file-semantics

Thanks.