Tony Graham wrote:
> It may be simpler if you do it all using ">>":
> 
>   <xsl:template match="r">
>     <xsl:copy>
>       <xsl:apply-templates select="*[../g1[1] >> .]"/>
>       <xsl:for-each-group
>         select="g1[1] |
>                 *[(. >> ../g1[1]) and (../g2[last()] >> .)] |
>                 g2[last()]"
>         group-ending-with="g2">
>         <group>
>           <xsl:apply-templates select="current-group()"/>
>         </group>
>       </xsl:for-each-group>
>       <xsl:apply-templates select="*[. >> ../g2[last()]]"/>
>     </xsl:copy>
>   </xsl:template>

Aha! Very nice. Your other email also presented a very easy to
understand solution. Thanks to both Tony and Abel.

Cheers,
Raman