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Given wikisyntax input

* foo
* bar
* <poem>
loirem
ipsum
dolor
sit
amet
</poem>
* baz
* qux

Expected HTML output (padding by myself to emphasize the structure)
<ul>
  <li>foo</li>
  <li>bar</li>
  <li>
    <div class="poem">
      <p>loirem<br/>
      ipsum<br/>
      dolor<br/>
      sit<br/>
      amet</p>
    </div>
  </li>
  <li>baz</li>
  <li>qux</li>
</ul>

Current HTML output (padding by myself to emphasize the structure)
<ul>
  <li>foo</li>
  <li>bar</li>
  <li>
    <div class="poem"></div>
  </li>
</ul>
<p>loirem<br/>
ipsum<br/>
dolor<br/>
sit<br/>
amet</p>
<ul>
  <li>baz</li>
  <li>qux</li>
</ul>


Applies to # list as well.
Applies to {{#tag:poem}} as well.