you can run it to see the result.
yes but it's not clear what you wanted the result to be.
The result of your code as posted is:
<?xml version="1.0" encoding="UTF-8"?><p>barfoo</p>
<p> foobar </p>
If I modify it as Andrew suggested, using the third argument of key to
tell the system to look up keys in the original document
by (adding
<xsl:variable name="main" select="/"/>
as a global variable and changing
select="key('extra','introduction')">
to
select="key('extra','introduction',$main)">
I get
<?xml version="1.0" encoding="UTF-8"?><p>barfoo</p><p>barfoo</p>
<p> foobar </p>
ie an extra copy of <p>barfoo</p> but I can't tell if that's the result
you want.
David
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