lass="external-link">exp</a></span><span class="op">(</span><span class="va">a</span><span class="op">)</span> <span class="op">+</span> <span class="va">b</span><span class="op">)</span><span class="op">)</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="co"># Only the right hand side of the last `~` will be kept</span></span>
<span class="r-in"><span class="va">cf</span><span class="op">$</span><span class="va">expr</span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span