wpautop() adds pee's around closing tag of HTML 5 block-level element figure

[springfeld]

If you add a figure-element into a post, it will only be altered on the last line. The ending tag of a HTML 5 block-level element figure is delivered as <p></figure></p> while the rest of the block is not altered.

I found the line, where block-level elements are listed, and the figure element - as well as other upcoming HTML 5 elements - isn't listed there:
http://core.trac.wordpress.org/browser/trunk/wp-includes/formatting.php#L188

HTML 5 snippet to copy and paste into a post

WordPress output: post-content after posting above snippet

As you can see (in the second file I uploaded which is generated by pasting the content of the first file) wpautop also assigns a paragraph around the start-tag (<p><figure ...></p>) and not only to the closing one.

My mistake.

Can someone come up with a list of HTML5 block-level element names?

Sure can.

The elements are: section|article|aside|hgroup|header|footer|nav|figure|details

Attaching patch.

Add new HTML 5 block-level elements to wpautop

Note: we'll probably need to add more exceptions for <video> and <audio> in the vain of the current <object> exception.

Add exception for video/audio tags, in the vain of object tags

Tested, and working with the given example.

Include summary, figcaption, menu

video/audio/source best left to #10151.

(In [13982]) Add block-level HTML5 elements to wpautop(). props rmccue. fixes #12335