At this time, Xalan does not include a function to compute the XPath from
one node (or the root) to another. There's an open request-for-enhancement
suggesting we add this; if someone wanted to write it and donate it, that
would be a Good Thing.
Note that it's not simply a matter of enumerating the parents, since you
might have
<a>
<b/>
<b>
<c/> <!-- Path should point to this one -->
<c/>
</b>
</a>
Finding a minimal _unique_ path to a node, without overspecifying it and
losing XPath's ability to tolerate some changes to the document, involves
some art as well as science.
______________________________________
Joe Kesselman / IBM Research
