 the text
        being matched if no previous match was found. This escape useful if you're
        iterating over the matches contained within a text, and you want each subsequence
        match to start where the last one ended.
      </p>
<h6>
<a name="boost_regex.syntax.basic_extended.h23"></a>
        <span class="phrase"><a name="boost_regex.syntax.basic_extended.quoting_escape"></a></span><a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.quoting_escape">Quoting
        esca