Support for XPath functions

[GoogleCodeExporter]

Does omnixml support XPath functions - specifically "contains".  The following 
does not seem to work:

XPath expresstion: //*[contains(@xlink:role,'normal')]/link:loc/@xlink:label

<?xml version="1.0" encoding="UTF-8"?>
<link:linkbase xmlns:link="linking_namespace" xmlns:xlink="xlinking_namespace">
  <link:presentationLink xlink:role="fancy">
    <link:loc xlink:label="part1"/>
    <link:loc xlink:label="part2"/>
    <link:loc xlink:label="part3"/>
  </link:presentationLink>
  <link:presentationLink xlink:role="normal">
    <link:loc xlink:label="part1"/>
    <link:loc xlink:label="part2"/>
    <link:loc xlink:label="part3"/>
  </link:presentationLink>
  <link:presentationLink xlink:role="funny">
    <link:loc xlink:label="part1"/>
    <link:loc xlink:label="part2"/>
    <link:loc xlink:label="part3"/>
  </link:presentationLink>
</link:linkbase>

I am using the code from the XPath demo supplied - am I doing something wrong?

Original issue reported on code.google.com by [email protected] on 25 Jul 2013 at 10:03