count tags

gistfile1.txt

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">

	<xsl:template match="/">
		<xsl:for-each select="descendant::*:fsDecl">
			<xsl:variable name="id" select="@xml:id"/>
				
			<xsl:value-of select="*:fsDescr"/>
			<xsl:text>: </xsl:text>
			<xsl:value-of select="count(ancestor::*:TEI/descendant::*:fs[@type=$id])"/>
		</xsl:for-each>
	</xsl:template>

</xsl:stylesheet>