td></tr>
    <tr><td><code class="mendoza-code">(set "abcd")</code>  </td> <td> Match any character in the argument string. Advances 1 character. </td></tr>
</table><p>Primitive patterns are not that useful by themselves, but can be passed to <code class="mendoza-code">peg/match</code> and <code class="mendoza-code">peg/compile</code> like any other pattern.
</p>
<pre class="mendoza-codeblock"><code data-language="janet">(<span class="mdzsyn-coresym">peg/match</span> <span class="mdzsyn-string">"hello"</spa