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I am puzzled by this. I cannot template-match elements based on their position when they are stored in a variable while I can successfully do so when they come from the input XML document. This is the input XML document: <?xml version="1.0" encoding="UTF-8"?> <pages> <page>Page number 1</page> <page>Page number 2</page> <page>Page number 3</page> <page>Page number 4</page> <page>Page number 5</page> <page>Page number 6</page> <page>Page number 7</page> </pages> In the stylesheet below I define a global variable $FOO that contains a subtree of elements identical to the input XML (sans root element). Then I try to do an identity copy of both the input and the variable, but also add an attribute to elements of certain positions. This is the stylesheet: <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:variable name="FOO" as="node()+"> <page>Page number 1</page> <page>Page number 2</page> <page>Page number 3</page> <page>Page number 4</page> <page>Page number 5</page> <page>Page number 6</page> <page>Page number 7</page> </xsl:variable> <xsl:template match="pages"> <pages> <!-- Copy input subtree --> <from-input> <xsl:apply-templates select="@*|node()"/> </from-input> <!-- Copy variable subtree --> <from-variable> <xsl:apply-templates select="$FOO"/> </from-variable> </pages> </xsl:template> <!-- Indentity copy --> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> <!-- Add attribute to elements of certain positions --> <xsl:template match="page[position() = (1,3,5)]"> <xsl:copy> <xsl:attribute name="foo"/> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> </xsl:stylesheet> As you can see in the output below, only elements from the input document are matched, but not elements from the variable. <?xml version="1.0" encoding="UTF-8"?> <pages> <from-input> <page foo="">Page number 1</page> <page>Page number 2</page> <page foo="">Page number 3</page> <page>Page number 4</page> <page foo="">Page number 5</page> <page>Page number 6</page> <page>Page number 7</page> </from-input> <from-variable> <page>Page number 1</page> <page>Page number 2</page> <page>Page number 3</page> <page>Page number 4</page> <page>Page number 5</page> <page>Page number 6</page> <page>Page number 7</page> </from-variable> </pages> Why?
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