blackfriday/testdata/Tabs.html

<ul>
<li><p>this is a list item
indented with tabs</p></li>

<li><p>this is a list item
indented with spaces</p></li>
</ul>

<p>Code:</p>

<pre><code>this code block is indented by one tab
</code></pre>

<p>And:</p>

<pre><code>    this code block is indented by two tabs
</code></pre>

<p>And:</p>

<pre><code>+   this is an example list item
    indented with tabs

+   this is an example list item
    indented with spaces
</code></pre>