Re: Cannot select a node here: the context item is

>>>>>   <xsl:when test="key('word-group-by-word',substring($word,1, 
$length-of-word - 2))"> <<<<<<<<<<<<<<<<<<
                                <xsl:sequence select="substring($word,1, 

key() with 2 arguments looks things up in the current document which
means it needs to know what the current node is. If you haven't got a
current node (which you haven't initially in the body of xsl:function) then...

You could do the xsl 1 thing and 
<xsl:for-each
select="$a-variable-holding-any-node-in-the-document-to-be-searched">
to get yourself back in sysnc,  or in xslt2 you can go

when test="select="$a-variable-holding-any-node-in-the-document-to-be-searched/key(....

David

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