[xslt] Namespace bug with imported stylesheet

[Brent Hendricks <brentmh ece rice edu>]

I've stumbled across a rather obscure namespace bug.  It only occurs 
when I have two namespaces in a stylesheet (with one specifed as the 
default) and I include a second stylesheet with the same namespaces 
declared, but the other one declared as the default (and also with an 
explict prefix).  It's hard to describe in words. Easier if you take a 
look at the attached files.

Using the attached stylesheet mainstyle.xsl against in.xml should yield:

<a:document xmlns:a="namespace:a">
   <b:result xmlns:b="namespace:b"/>
</a:document>

or something equivalent.  But instead, xsltproc outputs:

<a:document xmlns:a="namespace:a" xmlns="namespace:b">
   <result xmlns:b="namespace:b" xmlns="namespace:a"/>
</a:document>

Note that here <result> is incorrectly in namespace:a

-- Brent

-------------------------------------------------------------------------

"The programmer, like the poet, works only slightly removed from pure
  thought-stuff.  He builds his castles in the air, from air, creating
  by exertion of the imagination.  Few media of creation are so
  flexible, so easy to polish and rework, so readily capable of
  realizing grand conceptual structures."
                         -- Frederick Brooks, Jr., The Mythical Man Month
<document xmlns="namespace:a">
  <apply />
</document>
<?xml version="1.0" encoding="UTF-8"?> 
<xsl:stylesheet version="1.0" 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
  xmlns:a="namespace:a" 
  xmlns:b="namespace:b"
  xmlns="namespace:a">

  <xsl:template match="a:apply">
    <b:result />
  </xsl:template>

</xsl:stylesheet>
  



<?xml version= "1.0"?>
<xsl:stylesheet version="1.0" 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  xmlns:a="namespace:a"
  xmlns="namespace:b">

  <xsl:include href="include.xsl"/>
 
  <xsl:template match="a:document">
    <a:document>
      <xsl:apply-templates/>
    </a:document>
  </xsl:template>
  
</xsl:stylesheet>