<h2>Why is this an issue?</h2>
<p>When placing Unicode <a href="https://unicode.org/glossary/#grapheme_cluster">Grapheme Clusters</a> (characters which require to be encoded in
multiple <a href="https://unicode.org/glossary/#code_point">Code Points</a>) inside a character class of a regular expression, this will likely lead
to unintended behavior.</p>
<p>For instance, the grapheme cluster <code>c̈</code> requires two code points: one for <code>'c'</code>, followed by one for the <em>umlaut</em>
modifier <c