1<p>Just a <a href="/url/">URL</a>.</p>
2<p><a href="/url/" title="title">URL and title</a>.</p>
3<p><a href="/url/" title="title preceded by two spaces">URL and title</a>.</p>
4<p><a href="/url/" title="title preceded by a tab">URL and title</a>.</p>
5<p><a href="">Empty</a>.</p>
6