<p dir="auto">These don't seem to be generally useful enough to merit a place in the stdlib (and thus putting the maintenance burden on the core team). Does anyone object to removing them?</p>
<p dir="auto">A placeholder text <em>in</em> the search field hints:</p>
<blockquote>
<p dir="auto">…, '?' for more options</p>
</blockquote>
<p dir="auto">so I've entered "?" <em>in the search field</em> and ended up on this page:</p>
<p dir="auto"><a href="https://doc.rust-lang.org/std/?search=%3F" rel="nofollow">https://doc.rust-lang.org/std/?search=%3F</a></p>
<p dir="auto">Oops! I've realised that you've meant pressing <kbd>Shift+/</kbd> when text input <em>isn't focused</em>, but text input placeholder text is generally used as an example for the text input itself, so it confused me.</p>
<p dir="auto">I suggest handling search for <code class="notranslate">?</code> as a special case and displaying the help text too.</p>
<p dir="auto">And perhaps even better solution would be to automatically display a search syntax cheatsheet below the search input when the input is focused. Splunk search has something like this (they call it <a href="http://image.slidesharecdn.com/splunklivebeginnertrainingnyc-130503133959-phpapp01/95/splunk-live-beginner-training-nyc-17-638.jpg?cb=1367588588" rel="nofollow">search assistant</a>).</p>