GNU bug report logs - #69373
14.0.3; hack-local-variables misbehaves after loading AUCTeX

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Arash Esbati <arash <at> gnu.org>
Cc: 69373 <at> debbugs.gnu.org, soliditsallgood <at> mailbox.org
Subject: bug#69373: 14.0.3; hack-local-variables misbehaves after loading AUCTeX
Date: Sun, 25 Feb 2024 10:32:40 -0500

> Thanks for the report.  I think this is more an Emacs issue than AUCTeX
> and should be assigned/fixed there.

Agreed.
I think the patch below is needed.
Tony, are you able to recompile your own Emacs to test that patch?
If so, I'd appreciate if you could try it to confirm that it fixes the
problem for you as well.


        Stefan


diff --git a/lisp/files.el b/lisp/files.el
index 524385edc84..d1b7ab04b6f 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -4353,9 +4366,7 @@ hack-one-local-variable
     ('mode
      (let ((mode (intern (concat (downcase (symbol-name val))
                                  "-mode"))))
-       (unless (eq (indirect-function mode)
-                   (indirect-function major-mode))
-         (funcall mode))))
+       (set-auto-mode-0 mode t)))
     ('eval
      (pcase val
        (`(add-hook ',hook . ,_) (hack-one-local-variable--obsolete hook)))

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