Can't identify last ancestor node

Using this XML data:

<menudata>
	<menu name="link1"/>
	<menu name="link2">
		<menu name="link2a"/>
		<menu name="link2b"/>
	</menu>
</menudata>


I am producing this HTML output:
<ul>
<li>link1</li>
<li>link2
	<ul>
	<li>link2a</li>
	<li>link2b</li>
	</ul>
</li>
</ul>

I am using a convoluted stylesheet that tokenizes an
attribute and generates the HTML output based on the
attribute's value. My problem is identifying the last
nested node, in this example "link2b", so that I can
customize that node's output.

My complete stylesheet is below, but to summarize I
made two attempts:

<xsl:for-each select="ancestor::menu">
	<xsl:if test="position()=last()">
	<xsl:text>Write custom end text here</xsl:text>
	</xsl:if>
</xsl:for-each>

and

<xsl:if test="ancestor::menu[last()]">
<xsl:text>Write custom end tag here</xsl:text>
</xsl:if>

Both attempts wrote to each individual node, not just
the last one. How can I tell my stylesheet to write
one thing for the last <menu> node, and something else
for the rest?

Here's the entire stylesheet:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
              
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	
<xsl:output method="html" indent="yes"/>

<!-- siteID determines if a link is displayed for a
specific cobrand -->
<xsl:param name="siteID" select="2"/>

<!-- Displays navigation -->
<xsl:template match="/">

	<ul>

	<!-- tokenize all <menu> nodes -->
	<xsl:for-each select="//menu">

		<!-- Tokenize attributes to check if siteID is
excluded -->
		<xsl:call-template name="tokenize">
			<xsl:with-param name="string" select="@exsites"/>
			<xsl:with-param name="delimiters" select="','"/>
			<xsl:with-param name="level"
select="'process-includeExclude'"/>
		</xsl:call-template>

	</xsl:for-each>

	</ul>

</xsl:template>


<!-- Extract individual values from comma-delimited
attribute -->
<xsl:template name="tokenize">
	<xsl:param name="string" select="''" />
	<xsl:param name="delimiters" select="' &#x9;&#xA;'"
/>
	<xsl:param name="level" select="''" />

	<xsl:call-template name="_tokenize-delimiters">
		<xsl:with-param name="string" select="$string" />
		<xsl:with-param name="delimiters"
select="$delimiters" />
		<xsl:with-param name="level" select="$level" />
	</xsl:call-template>

</xsl:template>


<xsl:template name="_tokenize-delimiters">

	<xsl:param name="string" />
	<xsl:param name="delimiters" />

	<xsl:param name="level" />

	<xsl:param name="last-delimit"/> 
	<xsl:variable name="delimiter"
select="substring($delimiters, 1, 1)" />
	
	<xsl:choose>
		<xsl:when test="not($delimiter)">

		<!-- Sends individual attribute value for processing
-->
		<xsl:call-template name="process-includeExclude" >
			<xsl:with-param name="currentExsite"><xsl:value-of
select="$string"/></xsl:with-param>	
		</xsl:call-template>

	   </xsl:when>

	<!-- process string until all tokens are separated
-->
   <xsl:when test="contains($string, $delimiter)">
     <xsl:if test="not(starts-with($string,
$delimiter))">
       <xsl:call-template name="_tokenize-delimiters">
         <xsl:with-param name="string"
select="substring-before($string, $delimiter)" />
         <xsl:with-param name="delimiters"
select="substring($delimiters, 2)" />
       <xsl:with-param name="level" select="$level" />

       </xsl:call-template>
     </xsl:if>
     <xsl:call-template name="_tokenize-delimiters">
       <xsl:with-param name="string"
select="substring-after($string, $delimiter)" />
       <xsl:with-param name="delimiters"
select="$delimiters" />
       <xsl:with-param name="level" select="$level" />
     </xsl:call-template>
   </xsl:when>
   <xsl:otherwise>
     <xsl:call-template name="_tokenize-delimiters">
       <xsl:with-param name="string" select="$string"
/>
       <xsl:with-param name="delimiters"
select="substring($delimiters, 2)" />
       <xsl:with-param name="level" select="$level" />
     </xsl:call-template>
   </xsl:otherwise>
 </xsl:choose>
</xsl:template>


<xsl:template name="process-includeExclude"
match="menu">
<xsl:param name="currentExsite" select="''" />

	<!-- check if siteID is excluded or included -->
	<xsl:if test="$currentExsite!=$siteID">
	<xsl:if test="@incsites=$siteID or @incsites=0">

		<!-- Write <li> tags -->
		<xsl:text
disable-output-escaping="yes">&lt;li&gt;</xsl:text>		

		<!-- Write list content -->
		<xsl:value-of select="@name"/>

		<!-- Nested list - Write nested <ul> tags -->
		<xsl:if test="count(menu) > 0">
		<xsl:text
disable-output-escaping="yes">&#10;&lt;ul&gt;&#10;</xsl:text>
		</xsl:if>

		<!-- Write </li> tags for top-level and nested items
-->
		<xsl:if test="count(menu) = 0">
		
		<xsl:choose>

<!-- This is where I am having trouble.  I want this
to appear only at the last menu/menu node. Instead
it's selecting all menu ancestors. -->

			<!-- If it's the last sub-menu, close with an </li>
and a </ul> -->
			<xsl:when test="ancestor::menu[last()]">
				<xsl:text
disable-output-escaping="yes">&lt;/li&gt;&lt;/ul&gt;
				</xsl:text>
			</xsl:when>

			<!-- If it's not the last sub-menu, close with an
</li> -->
			<xsl:otherwise>
				<xsl:text
disable-output-escaping="yes">&lt;/li&gt;
				</xsl:text>			
			</xsl:otherwise>

		</xsl:choose>

		</xsl:if>

	</xsl:if>	
	</xsl:if>		


</xsl:template>

</xsl:stylesheet>


Thanks,

-Mat




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