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    copied!<p><strong>This XSLT 2.0 transformation illustrates how multi-pass (in this case 2-pass) processing can be done</strong>:</p> <pre><code>&lt;xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt; &lt;xsl:output omit-xml-declaration="yes" indent="yes"/&gt; &lt;xsl:strip-space elements="*"/&gt; &lt;xsl:template match="node()|@*" mode="#all"&gt; &lt;xsl:copy&gt; &lt;xsl:apply-templates select="node()|@*" mode="#current"/&gt; &lt;/xsl:copy&gt; &lt;/xsl:template&gt; &lt;xsl:template match="/"&gt; &lt;xsl:variable name="vPass1"&gt; &lt;xsl:apply-templates/&gt; &lt;/xsl:variable&gt; &lt;xsl:apply-templates select="$vPass1/*" mode="non-empty"/&gt; &lt;/xsl:template&gt; &lt;xsl:template match="text()[xs:integer(.) mod 2 eq 0]"/&gt; &lt;xsl:template match="*[not(node())]" mode="non-empty"/&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p><strong>when applied on this XML document</strong>:</p> <pre><code>&lt;nums&gt; &lt;num&gt;01&lt;/num&gt; &lt;num&gt;02&lt;/num&gt; &lt;num&gt;03&lt;/num&gt; &lt;num&gt;04&lt;/num&gt; &lt;num&gt;05&lt;/num&gt; &lt;num&gt;06&lt;/num&gt; &lt;num&gt;07&lt;/num&gt; &lt;num&gt;08&lt;/num&gt; &lt;num&gt;09&lt;/num&gt; &lt;num&gt;10&lt;/num&gt; &lt;/nums&gt; </code></pre> <p>It creates a result document in the first pass (which is captured in the <code>$vPass1</code> variable), in which all <code>&lt;num&gt;</code> elements with contents even integer are stripped off their content and are empty. Then, in the second pass, applied in a specific mode, all empty elements are removed. </p> <p><strong>The result of the transformation is</strong>:</p> <pre><code>&lt;nums&gt; &lt;num&gt;01&lt;/num&gt; &lt;num&gt;03&lt;/num&gt; &lt;num&gt;05&lt;/num&gt; &lt;num&gt;07&lt;/num&gt; &lt;num&gt;09&lt;/num&gt; &lt;/nums&gt; </code></pre> <p><strong>Do note the use of modes</strong>, and the special modes <code>#all</code> and <code>#current</code>.</p> <p><strong>Update:</strong> The OP now wants in a comment to delete "recursively" "all nodes that have no non-empty descendant".</p> <p>This can be implemented simpler using no explicit recursion. Just change:</p> <pre><code> &lt;xsl:template match="*[not(node())]" mode="non-empty"/&gt; </code></pre> <p>to:</p> <pre><code> &lt;xsl:template match="*[not(descendant::text())]" mode="non-empty"/&gt; </code></pre>
 

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