epending on whether the parsing
        should be done using a skipper (<code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">phrase_parse</span></code>)
        or not (<code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">parse</span></code>). All free functions now return a
        simple <code class="computeroutput"><span class="keyword">bool</span></code>. A returned <code c