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<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:l="http://www.schema.de/XSL/ST4DocuManagerlang" version="1.0">
<xsl:template match="/">
<xsl:for-each select="/root/bla">
<xsl:comment>
<xsl:value-of select="@test"/>
</xsl:comment>
<xsl:call-template name="duplicate">
<xsl:with-param name="value" select="@test" />
</xsl:call-template>
</xsl:for-each>
</xsl:template>
<xsl:template name="duplicate">
<xsl:param name="value" />
<xsl:param name="result" />
<xsl:choose>
<xsl:when test="contains($value, ' ')">
<xsl:call-template name="duplicate">
<xsl:with-param name="value" select="substring-after($value, ' ')" />
<xsl:with-param name="result" select="concat($result,' ', substring-before($value, ' ') * 2)" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="concat($result,' ', $value * 2)" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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