pan class="identifier">karma</span>
<span class="special">{</span>
    <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Expr</span><span class="special">&gt;</span>
    <span class="keyword">inline</span> <span class="special">&lt;</span><span class="identifier">unspecified</span><span class="special">&gt;</span>
    <span class="identifier">format</span><span class="special">(</span>
        <span class="identifier">Expr</