m"><i><tt>len</tt></i>:</span></td><td>the allocated length of @list</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of unique strings found, -1 in case of errors and -2 if there is more than @len strings</td></tr></tbody></table></div></div>
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        <div class="refsect2" lang="en"><h3><a name="xmlExpGetStart"/>xmlExpGetStart ()</h3><pre class="programlisting">int	xmlExpGetStart			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <