bug#58064: 29.0.50; XHTML+ mode misinterpretes apostrophe in element text

[Lars Ingebrigtsen]

(Please keep the debbugs address in the CCs -- otherwise it won't reach
the bug tracker.)

Pedro Andres Aranda Gutierrez <paaguti@gmail.com> writes:

> Test methodolgy:
>
> 1. curl -OL https://gutenberg.org/files/34811/34811-h.zip
> 2. emacs -Q 34811-h.zip
> 3. select the htm file in the archive
> 4. look for 'ook'

That was a huge file, but I've narrowed it down to a more realistic test
case; included below.

It seems to be triggered when there's a <style> section that's longer
than 1K that precedes the "c'est", somehow.

I know nothing about mhtml-mode -- perhaps it's obvious to somebody else
what the problem is?

»Je, den Düwel ook, c'est la question, ma très chère demoiselle!«