       <span class="keyword">const</span> <span class="keyword">int</span> <span class="special">(&amp;</span><span class="identifier">submatches</span><span class="special">)[</span><span class="identifier">R</span><span class="special">],</span>
                     <span class="identifier">match_flag_type</span> <span class="identifier">m</span> <span class="special">=</span> <span class="identifier">match_default</span><span class="special">);</span>
</pre>
<p>
        <span class="bold"><strong>Precond