<em>p</em></span>
                    using the <a class="link" href="../match_flag_type.html" title="match_flag_type"><code class="computeroutput"><span class="identifier">match_flag_type</span></code></a> <span class="emphasis"><em>flags</em></span>.
                    For each match found calls the call-back function cb as: <code class="computeroutput"><span class="identifier">cb</span><span class="special">(*</span><span class="keyword">this</span><span class="special">);</span></code>
                