<p>Here's a simple block:</p>
<p></p>
<p>This should be a code block, though:</p>
<pre><code>&lt;div&gt;
    foo
&lt;/div&gt;
</code></pre>
<p>As should this:</p>
<pre><code>&lt;div&gt;foo&lt;/div&gt;
</code></pre>
<p>Now, nested:</p>
<p></p>
<p>This should just be an HTML comment:</p>
<p></p>
<p>Multiline:</p>
<p></p>
<p>Code block:</p>
<pre><code>&lt;!-- Comment --&gt;
</code></pre>
<p>Just plain comment, with trailing spaces on the line:</p>
<p></p>
<p>Code:</p>
<pre><code>&lt;hr /&gt;
</code></pre>
<p>Hr's:</p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>