lass="example-wrap"><pre class="rust rust-example-rendered ignore">
<span class="kw">let</span> <span class="ident">opt_help</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">have_some_info</span> { <span class="prelude-val">Some</span>(<span class="string">&quot;did you mean `this`?&quot;</span>) } <span class="kw">else</span> { <span class="prelude-val">None</span> };

<span class="macro">abort</span><span class="macro">!</span>(
    <span class="ident">span</span>, <span cla