[xsl] Unique list of all linked documents

Subject: [xsl] Unique list of all linked documents
From: Edward.Middleton@xxxxxxxxxxx
Date: Tue, 16 Apr 2002 11:11:50 +0900
I need to get a unique list of all documents that are linked to a document.
The list must include documents that are linked from linked documents to an arbitrary level.

I have looked at
http://www.dpawson.co.uk/xsl/sect2/N4852.html#d149e66
which explained how to uses keys across multiple input files but I can't work out how to do this
for an arbitrary level of linking.
as 
<xsl:variable name="documents" select="document(/documents/doc/@href)" />
will only get the first level of linking.


Thanks in advance
Edward


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