pecial">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">repository</span><span class="special">;</span>

<span class="comment">// Define metafunctions allowing to compute the type of the distinct()</span>
<span class="comment">// and ascii::char_() constructs</span>
<span class="keyword">namespace</span> <span class="identifier">traits</span>
<span class="special">{</span>
    <span cla