Re: AUCTeX and undo-tree

[Joost Kremers]

On Wed, Mar 04 2020, Greg Bognar wrote:
> I use the undo-tree package from GNU Elpa.  Recently, the undo 
> command
> (undo-tree-undo) stopped working when I edit .tex files with 
> AUCTeX (in
> LaTeX-mode).  As far as I can tell, it works as expected in all 
> other modes.
> Emacs seems to hang and I have to hit C-g repeatedly to be able 
> to edit again.
> The default M-x undo command still works.

I'm not seeing any problem, undo-tree works just fine in AUCTeX.

What versions of Emacs and AUCTeX are you using? What OS? I'm on 
Linux, Emacs 26.3 and AUCTeX 12.2.0. 

> Since I have a lot of customizations, it's possible the cause is 
> somewhere in my
> init file.  But before I try to track it down, I wonder if 
> anyone else
> experienced this problem and have some ideas.

Check out Emacs sandbox:

https://github.com/alphapapa/emacs-sandbox.sh

It allows you to run a clean Emacs instance without your 
customisations. You can then install AUCTeX and undo-tree into 
that instance (Melpa is pre-configured) and test if the problem 
occurs. When you quit Emacs, everything is cleaned up. Your config 
isn't touched at all, you can even start the Emacs sandbox safely 
while your regular Emacs is running.

This way you can find out if your config has anything to do with 
the issue you're seeing.

HTH



--
Joost Kremers
Life has its moments