1 <refentry xmlns="http://docbook.org/ns/docbook"
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2 xmlns:xlink="http://www.w3.org/1999/xlink"
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3 xmlns:xi="http://www.w3.org/2001/XInclude"
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4 xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
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5 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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6 version="5.0" xml:id="refentry.source.fallback.profile">
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8 <refentrytitle>refentry.source.fallback.profile</refentrytitle>
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9 <refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
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12 <refname>refentry.source.fallback.profile</refname>
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13 <refpurpose>Specifies profile of "fallback" for refentry "source" data</refpurpose>
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17 <src:fragment xml:id="refentry.source.fallback.profile.frag">
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18 <xsl:param name="refentry.source.fallback.profile">
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19 refmeta/refmiscinfo[not(@class = 'date')][1]/node()</xsl:param>
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23 <refsection><info><title>Description</title></info>
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26 <parameter>refentry.source.fallback.profile</parameter> is a string
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27 representing an XPath expression. It is evaluated at run-time and used
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28 only if no "source" data can be found by other means (that is, either
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29 using the <tag>refentry</tag> metadata-gathering logic "hard coded" in
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30 the stylesheets, or the value of the
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31 <parameter>refentry.source.name.profile</parameter> and
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32 <parameter>refentry.version.profile</parameter> parameters, if those
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33 are enabled).</para>
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36 <para>Depending on which XSLT engine you run, either the EXSLT
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37 <function>dyn:evaluate</function> extension function (for xsltproc or
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38 Xalan) or <function>saxon:evaluate</function> extension function (for
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39 Saxon) are used to dynamically evaluate the value of
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40 <parameter>refentry.source.fallback.profile</parameter> at
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41 run-time. If you don't use xsltproc, Saxon, Xalan -- or some other
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42 XSLT engine that supports <function>dyn:evaluate</function> -- you
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43 must manually disable fallback processing by setting an empty value
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44 for the <parameter>refentry.source.fallback.profile</parameter>
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