import functions and operators from MathML rather than XPath/XQuery? (valueTesting)

We currently import our functions and operators
from
 http://www.w3.org/TR/xpath-functions/

The normative reference on that and
on http://www.w3.org/TR/xquery continue to concern
me, w.r.t. our schedule.

At the rules workshop, somebody pointed out to me
that MathML has URIs for functions an operators,
e.g.

  http://www.w3.org/TR/MathML2/appendixc.html#cedef.factorial

I don't think it has all the ones we need; regex,
in particular.

But MathML2 is already a REC, and I played around with
it (http://www.w3.org/2001/sw/DataAccess/mathml-rules.xml )
and found it integrates with the Semantic Web pretty well,
so I have been thinking about importing our functions
and operators from there instead of XQuery, and I thought
I'd share the thought with the WG and see if it goes
anywhere.

This might involve a charter change... er... hmm...
I thought there was something explicit about using XQuery
functions and operators in our charter, but I don't see it
now.
  http://www.w3.org/2003/12/swa/dawg-charter


-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
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