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<?xml version="1.0"?>
<?xml-stylesheet type="text/xml" href="#bug"?>
<!DOCTYPE doc [
<!ATTLIST xsl:transform
  id	ID	#REQUIRED>
]>
<doc>
  <xsl:transform 
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    version="2.0"
    id="bug">
    <xsl:key name="k0" match="e2" use="name('foo')" /> 

    <xsl:template name="t1" match="/">
      <xsl:element name="e2" namespace="{//doc}" />
    </xsl:template>
    <xsl:template name="t2" match="key('k0', 'bar')" />
  </xsl:transform>
  
  <e2/>
  
</doc>