ex</span><span class="special">(</span><span class="identifier">SequenceT</span> <span class="special">&amp;</span> Input<span class="special">,</span> 
                   <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">RegexTraitsT</span> <span class="special">&gt;</span> <span class="special">&amp;</span> Rx<span class="special">,</span> 
            