> <xsl:copy-of select="$p/note[position()=regex-group(1)]"/>
> </xsl:matching-substring>
> 
> However, here we count all preceding nodes, no?  

no, that should only count sibling note elements, the children of the p
node stored in $p.

If you are getting teh wrong ones post a complete (small) case with a
small input sample and we can have a look...

David

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