at the returned term matches, or does not match, a specified regular expression:</p>
<div class="codehilite"><pre><span></span>&lt;name.subtype ? `regex`&gt;    # Term must match regex
&lt;name.subtype ?! `regex`&gt;   # Term must not match regex
</pre></div>


<p>As the official Rant runtime runs on the .NET Framework, Rant uses .NET's Regex flavor.</p>
<h3 id="regex-options">Regex options<a class="headerlink" href="#regex-options" title="Permanent link">[link]</a></h3>
<ul>
<li><code>`regex`i</code>: Case