<xsl:variable> behavior

<xsl:template match="/">
  <xsl:variable name="x">
    <xsl:choose>
      <xsl:when test="false()">X</xsl:when>
    </xsl:choose>
  </xsl:variable>
  <xsl:if test="$x">x</xsl:if>
</xsl:template>  

This (unexpectedly) prints "x" using jclark's xt while

<xsl:template match="/">
  <xsl:variable name="x"></xsl:variable>
  <xsl:if test="$x">x</xsl:if>
</xsl:template>  

Does not (as expected). 

Thoughts?

Clark



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