truncatewords_html fails on some self-closing tags

[Béranger Enselme]

Also in 1.11...

>>> from django.template.defaultfilters import truncatewords_html
>>> truncatewords_html('<p class="alinea">one two three</p>', 2)
'<p class="alinea">one two ...</p>'
>>> truncatewords_html('<p class="alinea">one two three</p><p class="alinea"/><p class="alinea">four five</p>', 4)
'<p class="alinea">one two three</p><p class="alinea"/><p class="alinea">four ...</p></p>'

truncatewords_html will add tag closures for every self-closing tag that has at least an attribute.

[Carlton Gibson]

I think this is invalid. If I pump your HTML fragment into ​the W3 HTML Validator (as HTML 5) I get (amongst errors about the document structure not being right) this:

Error: Self-closing syntax (/>) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
From line 1, column 36; to line 1, column 54
three</p><p class="alinea"/><p cla

Looks like truncatewords_html's behaviour is correct.