name="xmlRegexp">Structure </a>xmlRegexp</h3><pre class="programlisting">struct _xmlRegexp {
The content of this structure is not made public by the API.
} xmlRegexp;
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        <div class="refsect2" lang="en"><h3><a name="xmlRegexpPtr">Typedef </a>xmlRegexpPtr</h3><pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegexp">xmlRegexp</a> * xmlRegexpPtr;
</pre><p>A libxml regular expression, they can actually be far more complex thank the POSIX regex expressions