What name-space is used for exslt:node-set?  I'm trying the following,
as described on http://www.exslt.org/howto.html, but Xalan throws the
error, "Prefix must resolve to a namespace: exslt."

<xsl:stylesheet version="1.0"
         xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
         xmlns:math="http://exslt.org/common">

Thanks,
Mark

> My team's currently limited to XSLT 1.0,

in that case I'd do it in two passes, first pull in all the elements
into one tree:

<xsl:variable name="temp">
<components>
 <xsl:copy-of
select="document(document('filenames_file.xml')/files/file)/components/component"/>
</components>
</xsl:variable>

then use exslt:node-set so you can apply templates to that to do the
grouping (eg muenchian grouping using keys as described in the faq or
jeni's site. this is much easier now that all the nodes to be grouped
are siblings of each other.

<components>
<xsl:for-each select="exslt:node-set($temp)/components/component[.....
....
</xsl:for-each>
</components>

David