[whatwg] Closing tags for empty content model

[Dean Edwards]

I'm currently writing a JavaScript implementation of the <video> element.

I'm running into problems with Opera9.52.

If I use the following markup then the text in the following <p> element 
is coloured red:

<video width="640" height="360" style="color:red">
  <source src="bunny.ogv" type="video/ogg">
  <source src="bunny.mp4" type="video/mp4">
</video>
<p>Text after the video element.</p>

Opera, before version 10, treats all unknown elements as block elements. 
That means that all elements following the first <source> element are 
children of the first <source> element. This is potentially disastrous.

The only solution is to add closing tags:

<video width="640" height="360" style="color:red">
  <source src="bunny.ogv" type="video/ogg"></source>
  <source src="bunny.mp4" type="video/mp4"></source>
</video>

But then it is invalid.

Is there any way we can change the content model for this element (and 
possibly <command>) to phrasing? The text content could be descriptive 
of the particular media or provide a fallback to download the file.

<source src="bunny.ogv" type="video/ogg">
  <a href="bunny.ogv">download this video in OGG format</a>
</source>

Or do we not care about edge cases like this?

-dean