Command Line plugin not escaping output HTML

[at055612]

Information:

• Prism version: 13b56a9
• Plugins: Command Line
• Environment: Browser

Description
If the command output includes html reserved characters, they are not escaped and thus are treated as HTML.
This is because the command output is not subject to highlighting and thus does not get escaped by Prism.js.

I have a fix. Will submit a PR shortly.

Example
If you have this HTML

<pre class="command-line" data-filter-output="(out)"><code class="language-bash">
echo '&lt;span style=&quot;font-size: 2em&quot;&gt;foobar&lt;/span&gt;'
(out)&lt;span style=&quot;font-size: 2em&quot;&gt;foobar&lt;/span&gt;
</code></pre>

Then you get this output

But what we want is: