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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>l10n.lang.value.rfc.compliant</title><link rel="stylesheet" type="text/css" href="../reference.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="../index.html" title="DocBook XSL Stylesheets: Reference Documentation"><link rel="up" href="l10n.html" title="Localization"><link rel="prev" href="l10n.gentext.use.xref.language.html" title="l10n.gentext.use.xref.language"><link rel="next" href="writing.mode.html" title="writing.mode"><link rel="copyright" href="copyright.html" title="License"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">l10n.lang.value.rfc.compliant</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="l10n.gentext.use.xref.language.html">Prev</a> </td><th width="60%" align="center">Localization</th><td width="20%" align="right"> <a accesskey="n" href="writing.mode.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="l10n.lang.value.rfc.compliant"></a><div class="titlepage"></div>

<div class="refnamediv"><h2><span class="refentrytitle">l10n.lang.value.rfc.compliant</span></h2><p>
l10n.lang.value.rfc.compliant
 &#8212; Make value of lang attribute RFC compliant?
</p></div>

<div class="refsynopsisdiv"><h2>Synopsis</h2>
<a name="l10n.lang.value.rfc.compliant.frag"></a><pre class="programlisting">
&lt;xsl:param name="l10n.lang.value.rfc.compliant" select="1"&gt;&lt;/xsl:param&gt;
</pre>
</div>

<div class="refsection"><a name="idp6908320"></a><h2>Description</h2>

<p>If non-zero, ensure that the values for all <code class="sgmltag-attribute">lang</code> attributes in HTML output are RFC
compliant<a href="#ftn.idp6910864" class="footnote" name="idp6910864"><sup class="footnote">[4]</sup></a>.

by taking any underscore characters in any <code class="sgmltag-attribute">lang</code> values found in source documents, and
replacing them with hyphen characters in output HTML files. For
example, <code class="literal">zh_CN</code> in a source document becomes
<code class="literal">zh-CN</code> in the HTML output form that source.

</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>This parameter does not cause any case change in <code class="sgmltag-attribute">lang</code> values, because RFC 1766
explicitly states that all "language tags" (as it calls them) "are
to be treated as case insensitive".</p>
</div><p>
</p>

</div>
<div class="footnotes"><br><hr style="width:100; text-align:left;margin-left: 0"><div id="ftn.idp6910864" class="footnote"><p><a href="#idp6910864" class="para"><sup class="para">[4] </sup></a>Section 8.1.1, <a class="ulink" href="http://www.w3.org/TR/REC-html40/struct/dirlang.html#h-8.1.1" target="_top">Language Codes</a>, in the HTML 4.0 Recommendation states that:

</p><div class="blockquote"><blockquote class="blockquote"><p>[RFC1766] defines and explains the language codes
that must be used in HTML documents.</p>
<p>Briefly, language codes consist of a primary code and a possibly
empty series of subcodes:

</p><pre class="literallayout">language-code = primary-code ( "-" subcode )*</pre><p>
</p>
<p>And in RFC 1766, <a class="ulink" href="http://www.ietf.org/rfc/rfc1766.txt" target="_top">Tags for the Identification
of Languages</a>, the EBNF for "language tag" is given as:

</p><pre class="literallayout">Language-Tag = Primary-tag *( "-" Subtag )
Primary-tag = 1*8ALPHA
Subtag = 1*8ALPHA</pre><p>
</p>
</blockquote></div><p>
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