Output a comma if it's not the last one in the node
File: Data.xml
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" omit-xml-declaration="yes" indent="no" />
<xsl:template match="figure/title">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="para" />
</xsl:stylesheet>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" omit-xml-declaration="yes" />
<xsl:template match="title">
<xsl:text>title ancestors:</xsl:text>
<xsl:for-each select="ancestor::*">
<xsl:value-of select="name()" />
<xsl:if test="position() != last()">
<xsl:text>,</xsl:text>
</xsl:if>
</xsl:for-each>
</xsl:template>
<xsl:template match="para" />
</xsl:stylesheet>
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