class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="special">&gt;</span>
</pre>
<p>
        But wait, there's one more collapsing rule: If the attribute is followed
        by a single element <code class="computeroutput"><span class="identifier">fusion</span><span class="special">::</span><span class="identifier">vector</span></code>,
        The element is stripped naked from its container. To make a long story short,
        the attribute of the expr