I'm playing around with the added features available in key
declarations but I think I must be misunderstanding
something.  Here's my key declaration (I realize that this particular
example would be better as a simple
@use but I want to understand how it works to see if it might make
some of my other keys look a little
better)....

  <xsl:key name="keyNames"
                   match="name | mdv">
        <lookup oid="{@oid}"/>
  </xsl:key>

  http://www.w3.org/TR/2007/REC-xpath-datamodel-20070123/#const-infoset-element
  (typed-value)

I thought that to use this key to lookup the @name associated with
@oid="AA.AA" for example, I'd do

        <xsl:variable name="lookup">
          <lookup oid="AA.AA"/>
        </xsl:variable>
        <xsl:sequence select="key('keyNames', $lookup)/@name"/>

But this actually returns a sequence containing all the @names.

I seek enlightenment as to why this is so :-)

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