an></td><td>the string</td></tr><tr><td><span class="term"><i><tt>len</tt></i>:</span></td><td>the string len in bytes if available</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the resulting expression or NULL in case of internal error</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="xmlExpSubsume"/>xmlExpSubsume ()</h3><pre class="programlisting">int	xmlExpSubsume			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlEx