Second XSLT using the Muenchian method (II)

gistfile1.xml

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

    <xsl:output encoding="utf-8" method="xml" indent="yes" />
    <xsl:key use="text()" name="path-key"
        match="path" />

    <xsl:template match="log">
        <xsl:copy>
            <xsl:apply-templates select="logentry" />
        </xsl:copy>
    </xsl:template>

    <xsl:template match="logentry">
        <xsl:apply-templates select="paths/path" />
    </xsl:template>

    <xsl:template match="path">
        <xsl:if
            test="generate-id() = generate-id(key('path-key', text())[1])">
            <xsl:copy-of select="."/>
        </xsl:if>
    </xsl:template>
</xsl:stylesheet>