> Would be nice to know if matches() would get me the same result...


<xsl:for-each select="part/section/par[@class='45_UeberschrPara' and contains(text(), 'In-Kraft-Treten')]/following::text()">
	<xsl:analyze-string select="." regex="\d{{1,2}}.+\d{{4}}">
		<xsl:matching-substring>
			<xsl:call-template name="get.date">
				<xsl:with-param name="text" select="." as="xs:string"/>
			</xsl:call-template>
		</xsl:matching-substring>
	</xsl:analyze-string>
</xsl:for-each>

should be equivalent to


<xsl:for-each select="part/section/par[@class='45_UeberschrPara' and contains(text(), 'In-Kraft-Treten')]/following::text()[matches(.,\d{1,2}.+\d{4})">
			<xsl:call-template name="get.date">
				<xsl:with-param name="text" select="." as="xs:string"/>
			</xsl:call-template>
</xsl:for-each>


(untested)

David

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