id: no-nested-links
valid:
  - '<a href="/x">link</a>'
  - '<a href="/x"><span>nested</span></a>'
  - '<div><a href="/x">link</a></div>'
  - '<div><a href="/x">first</a><a href="/y">second</a></div>'
invalid:
  - '<a href="/x">outer <a href="/y">inner</a></a>'
  - '<a><a>double</a></a>'
  - '<a href="/x"><span><a href="/y">inner</a></span></a>'
  - |
      <a href="/outer">
        <span>
          <a href="/middle">
            <em><a href="/inner">deep</a></em>
          </a>
        </span>
      </a>