<stx:transform version="1.0" 
  xmlns:stx="http://stx.sourceforge.net/2002/ns"
  recognize-cdata="no"
  strip-space="yes">

  <stx:group recognize-cdata="yes">

    <stx:template match="root" public="yes">
      <stx:process-children/>
    </stx:template>

    <stx:template match="text()[name(..)='root']">
      [<stx:copy/>]
    </stx:template>

  </stx:group>

</stx:transform>