match_icase</span>             <span class="comment">// all matching operations are case insensitive</span>
</pre>
            If no parameter is passed to the constructor, <code class="computeroutput"><span class="identifier">match_flags</span><span class="special">::</span><span class="identifier">match_default</span></code>
            is used, i.e. the <code class="computeroutput"><span class="special">.</span></code> matches
            newlines and matching is case sensitive.
          </li>
<li class