e.g. <code class="docutils literal notranslate"><span class="pre">[+*/-]</span></code> matches basic
mathematical operators.</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">*</span></code></dt><dd><p>Matches preceding pattern zero or more times</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">+</span></code></dt><dd><p>Matches preceding pattern one or more times</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">?</span></code></dt