showdownjs/test/functional/makehtml/cases/issues/#390.brackets-in-URL-break-links.html

<p>This is a <a href="https://en.wikipedia.org/wiki/Textile_(markup_language)" title="Textile">link</a>.</p>
<p>This is another <a href="https://en.wikipedia.org/wiki/Textile_(markup_language)" title="Textile">link</a>.</p>
<p><a href="./image/cat1).png" title="title">link</a></p>