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 while I was playing with for-each-group (saxon8), I found strange differences between my test style sheets I couldn't explain. I hope you can help me understanding the reason why. I've made the following minimal example of it. XML ====================== <root> <p>paragraph 1.</p> <p>paragraph 2.</p> <p>paragraph 3.</p> <b>no paragraph.</b> <p>paragraph 4.</p> <p>paragraph 5.</p> <b>no paragraph.</b> </root> style sheet #1 =============================================== <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"> <xsl:output indent='yes'/> <xsl:template match="/">
<xsl:apply-templates select="." mode='list'/>
</xsl:template> <xsl:template match="root" mode='list'>
<xsl:copy>
<xsl:for-each-group select="*"
group-adjacent="boolean(self::p)">
<xsl:choose>
<xsl:when test="current-group()/p">
<p-block>
<xsl:for-each select="current-group()">
<xsl:apply-templates select='.' mode='list'/>
</xsl:for-each>
</p-block>
</xsl:when>
<xsl:otherwise>
<no-p-block>
<xsl:for-each select="current-group()">
<xsl:apply-templates select='.' mode='list'/>
</xsl:for-each>
</no-p-block>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:template> <xsl:template match="*" mode='list'>
<xsl:copy>
<xsl:apply-templates mode='list'/>
</xsl:copy>
</xsl:template></xsl:stylesheet> output stylesheet #1 ======================================== <?xml version="1.0" encoding="UTF-8"?>
<root>
<no-p-block>
<p>paragraph 1.</p>
<p>paragraph 2.</p>
<p>paragraph 3.</p>
</no-p-block>
<no-p-block>
<b>no paragraph.</b>
</no-p-block>
<no-p-block>
<p>paragraph 4.</p>
<p>paragraph 5.</p>
</no-p-block>
<no-p-block>
<b>no paragraph.</b>
</no-p-block>
</root>I would expect the first paragraphs to be enclosed in a p-block element like my second stylesheet does: style sheet #2========================= <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"> <xsl:output indent='yes'/> <xsl:template match="/">
<xsl:apply-templates select="." mode='list'/>
</xsl:template> <xsl:template match="root" mode='list'>
<xsl:copy>
<xsl:for-each-group select="*"
group-adjacent="boolean(self::p)">
<xsl:variable name='curgroup'>
<xsl:sequence select='current-group()'/>
</xsl:variable> <xsl:choose>
<xsl:when test="$curgroup/p">
<p-block>
<xsl:for-each select="$curgroup">
<xsl:apply-templates select='.' mode='list'/>
</xsl:for-each>
</p-block>
</xsl:when>
<xsl:otherwise>
<no-p-block>
<xsl:for-each select="$curgroup">
<xsl:apply-templates select='.' mode='list'/>
</xsl:for-each>
</no-p-block>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:template> <xsl:template match="*" mode='list'>
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template></xsl:stylesheet> output style sheet #2 ==================== <?xml version="1.0" encoding="UTF-8"?>
<root>
<p-block>
<p>paragraph 1.</p>
<p>paragraph 2.</p>
<p>paragraph 3.</p>
</p-block>
<no-p-block>
<b>no paragraph.</b>
</no-p-block>
<p-block>
<p>paragraph 4.</p>
<p>paragraph 5.</p>
</p-block>
<no-p-block>
<b>no paragraph.</b>
</no-p-block>
</root>Note that the only difference is the use of variable curgroup. I don't understand why the two stylesheet have a different behaviour. Can you explain? thanks in advance, Ruud 
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