Identity Transformation that Removes Empty Nodes

Sometimes its handy to remove XML nodes that have no content other than whitespace. The following XSL does exactly that.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="@*|node()">
    <xsl:if test=". != '' or ./@* != ''">
     <xsl:if test="not(contains(name(), 'temp'))">
      <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
      </xsl:copy>
     </xsl:if>
    </xsl:if>
  </xsl:template>
</xsl:stylesheet>