RE: creating container elements

Hi,

> Given an input document containing amongst other things a 
> recurring element I 
> would like to create a container element in the output 
> document. To my mind 
> this was a case of output an opening container tag prior to the first 
> occurrent of the recurrent element and a closing tag after the last 
> occurrence.
See <http://jenitennison.com/xslt/grouping/>.

You want something like

  <xsl:template match="bar[not(preceding-sibling::*[1][self::bar])]">
    <container>
      <xsl:apply-templates select="." mode="walk"/>
    </container>
  </xsl:template>
  <xsl:template match="bar" />
  <xsl:template match="bar" mode="walk">
    <foobar>
      <xsl:copy-of select="@id"/>
      <xsl:apply-templates/>
    </foobar>
    <xsl:apply-templates select="following-sibling::*[1][self::bar]" mode="walk"/>
  </xsl:template>

For bar in mixed content you need to tweak the expressions and patterns.

Cheers,

Jarno