Re: Problem after upgrading to 13.1.3

[Greg Bognar]

Hi Ikumi and Arash,

Thanks for the pointer.  I think I understand what the problem was.

When the issue started, I removed the new AUCTeX installation and re-installed
it through the Emacs package manager to make sure no old version remained.  But
I also had a MELPA package called latex-extra installed, which depends on 
AUCTeX.
I suspect the package manager did not actually delete AUCTeX but kept it around
as a dependency -- and it never warned me about this.

Eventually, I removed both AUCTeX and latex-extra and reinstalled AUCTeX only,
and the problem went away.

I looked at latex-extra and it requires tex-buf.el.  So the problem seems to be
that Emacs loaded a file with the new AUCTeX but then latex-extra could not be
loaded and that lead to the weird behavior.  The issue is already reported:
https://github.com/Malabarba/latex-extra/issues/35

To be honest, I have not even used latex-extra's functionality.  It was just an
old package lying around...

All the best,
Greg

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On Thu 14 Jul 2022 at 09:23 Ikumi Keita wrote:
> 
> Hi Greg,
> 
> I don't use use-package, so I just state some observations which seem
> relevant.
> 
> >>>>> Greg Bognar via General discussion about AUCTeX <auctex@gnu.org> writes:
> > When I try to change the mode of the file by M-x LaTeX-mode, I get an error:
> 
> >    Cannot open load file: No such file or directory, tex-buf
> 
> That strongly suggests that there remains older version of AUCTeX. In
> recent commit, tex-buf.el was merged into tex.el. I guess that older one
> is conflicting with newer one.
> 
> > M-x describe-mode tells me:
> 
> >    Fundamental mode defined in `tex-mode.el':
> 
> That's very strange. tex-mode.el actually has no definition for
> Fundamental mode.
> 
> Perhaps deleting AUCTeX once and installing again might help.
> 
> Regards,
> Ikumi Keita
> #StandWithUkraine #StopWarInUkraine