terator, <b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT&gt;
OutputIterator regex_format(OutputIterator out,
                            <b>const</b> match_results&lt;iterator, Allocator&gt;&amp; m,
                            <b>const</b> charT* fmt,
                            match_flag_type flags = 0);
<b>template</b> &lt;<b>class</b> OutputIterator, <b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT&gt;
OutputIterator regex_format(OutputIterator out,
                   