File local-variables error: (error Lisp nesting exceeds ‘max-lisp-eval-depth’)

[Denis Bitouzé]

Hi,

while it used to work nicely, I'm now facing an issue when I open my
`.dtx` files, loaded with some specific local variables.

# Context

- GNU Emacs 27.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.8).
- AUCTeX 13.0.3.

# Steps to reproduce to see the issue

1. emacs -Q &
2. C-x C-e on each line of:

--8<---------------cut here---------------start------------->8---
(package-initialize)  
(setq TeX-auto-save t)
(setq TeX-parse-self t)
--8<---------------cut here---------------end--------------->8---

1. Open e.g. the following `.dtx` file:
   ┌────
   │ http://mirrors.ctan.org/info/dtxtut/skeleton.dtx   
   └────
2. Add the following local variables to the bottom of this file:

--8<---------------cut here---------------start------------->8---
%%% Local Variables:
%%% mode: tex
%%% eval: (doctex-mode)
%%% TeX-command-default: "TeX"
%%% TeX-master: t
%%% End:
--8<---------------cut here---------------end--------------->8---

5. Save and kill the buffer, and reopen this file.
6. You'll end up with the following error:
   ┌────
   │ File local-variables error: (error Lisp nesting exceeds 
‘max-lisp-eval-depth’)
   └────

Thanks for any help!   
-- 
Denis