gitter-markdown-processor/test/markdown-conversions/links-strange-mailto.html

parses gitter chat messages, but in its own process

<p><a href="mailto:&#39;@test" rel="nofollow">&#39;@test</a></p><p><a href="http://mailto:&#39;@test" rel="nofollow noopener noreferrer" target="_blank" class="link link-tooltip">foobar</a></p><p><img src="http://mailto:&#39;@test" alt="" rel="nofollow"></p>