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  1. or download this
    if (ref($bar) eq "ARRAY") {
      
...
    } else {
      print FH $bar;
    }
  2. or download this
    <xsl:test if position() != last()>
<xsl:value-of select="."/>;
...
<xsl:test if position() = last()>
<xsl:value-of select="."/>
</xsl:test>