RE: Realising when you hit the last match?

Normally I use for-each and a test on the position:

  <xsl:template match="/">
    <xsl:for-each select="//heading[@class='2000'] |
      //heading[@class='2003'] | //heading[@class='2008'] |
      //heading[@class='2009']">
      <xsl:apply-templates select="."/>
      <xsl:if test="position() != last()">,</xsl:if>
    <xsl:text>&#x0a;</xsl:text>
    </xsl:for-each>
  </xsl:template>

  <xsl:template match="heading">
    <xsl:value-of select="@class"/>
  </xsl:template>

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