[xsl] General algorithm for finding nodes between PIs

Hello All,

I have XML with a bunch of different processing instructions in them; here
is a sample:

<?xml version="1.0" encoding="UTF-8"?>
<info>
    <?Fm Condstart VbV-VCO?>
    <p>For this, use <b>that </b>to do that.</p>
    <?Fm Condend VbV-VCO?>
    <p><?Fm Condstart USB?>If you need this, do that.<?Fm Condend USB?></p>
</info>


For each "pair" of processing instructions (Condstart and Condend with the
same string), I want to find all of the nodes between them. I have this:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
    xmlns:xs="http://www.w3.org/2001/XMLSchema";
    exclude-result-prefixes="xs"
    version="2.0">
    
    <xsl:output indent="yes"/>
    
    <xsl:template match="/">
        <xsl:apply-templates
select="descendant::node()[preceding-sibling::processing-instruction('Fm')[.
='Condstart
VbV-VCO']][following-sibling::processing-instruction('Fm')[.='Condend
VbV-VCO']]"/>
    </xsl:template>
    
    <xsl:template match="node()">
        <xsl:copy-of select="."/>
    </xsl:template>
    
</xsl:stylesheet>

which essentially works. But what I am looking for is a general algorithm
for doing this with dozens of pairs like this. I am thinking that I can set
up a lookup xml file with a list of the names and then process the list. Any
suggestions would be appreciated. Thank you very much.

Rick Quatro
Carmen Publishing Inc.
rick(_at_)frameexpert(_dot_)com
585-366-4017

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