It can be like this:

 <xsl:template match="citref">
  <xsl:if test="not(child::delim[preceding-sibling::*[1][name() = 'citau']])">
  <xsl:message>citau does not followed by delim</xsl:message>
  </xsl:if>
 </xsl:template>

You need to consider other scenarios also for presence of delim as
well as citau.

Hope this helps!!

Mandar Jagtap

On Wed, Dec 31, 2008 at 12:00 PM, Ganesh Babu N <nbabuganesh@xxxxxxxxx> wrote:
> Dear All,
>
> I want to test the presence of <delim/> tag after </citau> in the
> below example. If it is missing the XSL should raise an error.
>
> <citref id="bib12">
>  <citaug>
>  <citau>
>   <citsname>Ferri</citsname>
>   <delim/>
>   <citfnames>E</citfnames>
>  </citau>
>  <delim/>
>  <cittext>(ed.).</cittext>
> </citaug>
>
> I have tried the following code but i am not getting the required result.
>
> <xsl:template match="citref">
>  <xsl:if test="citau/following-sibling::*[1]/self::delim">
>  <xsl:message>citau does not followed by delim</xsl:message>
>  </xsl:if>
> </xsl:template>
>
> Please help me in getting the desired result.
>
> Regards,
> Ganesh
>
>



-- 
Thanks & Regards,
Mandar