Merge misc/mixal-mode.el with version in Emacs

Stefan Kangas <[email protected]> Fri, 16 Oct 2020 03:40:10 -0700

Newsgroups	gmane.comp.gnu.mdk.bugs
Message-ID	<CADwFkmkWnrp70U2KTup_v2eNCVXzFP1VaDQ=q7Zef2JECLUXqQ@mail.gmail.com>

I see that there are some changes in your misc/mixal-mode.el that are
not in the version distributed with GNU Emacs.

I suggest to merge all relevant changes from Emacs into your version and
submitting either an updated file that can be part of Emacs 28.1, or
even better a patch.

Thanks.