r(mean(c(1, 2, 3)))</code></pre>
<pre class="knitr r">#&gt; mean(c(1, 2, 3))
</pre>
<p>In both cases, the R printer outputs the code that creates the vector, even if the vector is already created as in the first case!</p></li>
<li><p>Quosures are currently implemented as formulas but that’s an implementation detail. Quosures and formulas behave differently and it is misleading to have them print as formulas:</p>
<pre class="r"><code>expr(mean(!!quo(c(1, 2, 3))))</code></pre>
<pre class="knitr r">#&gt; mea