Re: Recursing on top-level elements

         <xsl:when test="/test/foo/@id=@id">

is the test you wanted, but

Example XML:

<test>
   <foo id=1/>
   <foo id=3/>
   <bar>
      <baz id=1/>
      <baz id=2/>
      <baz id=3/>
      <baz id=4/>
   </bar>
</test>

There should of course be quotes around the attribute values: id="1" etc 
otherwise it isn't well formed XML.

I would also change the name of the attribute from id.
attributes called id are normally reserved for attributes that are
declared to be of type ID in a DTD (ie the attributes that work with the
XSL id() function). If you used the above with such a DTD then you would
get parse errors because XML ids have to use valid XML names (ie they
can not start with a number. And the same id can not appear on more than
one element you can not have foo and baz both with id 1.

David


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