emacs-29 b7cef701cb5: * lisp/files.el (hack-one-local-variable): Use `set-auto-mode-0`

[Stefan Monnier]

branch: emacs-29
commit b7cef701cb587ecb66f192e4d41aa202645560e0
Author: Stefan Monnier <monnier@iro.umontreal.ca>
Commit: Stefan Monnier <monnier@iro.umontreal.ca>

    * lisp/files.el (hack-one-local-variable): Use `set-auto-mode-0`
    
    This fixes bug#69373.
---
 lisp/files.el | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/lisp/files.el b/lisp/files.el
index 1e7f00e4254..c0d26b2343c 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -4238,10 +4238,8 @@ already the major mode."
   (pcase var
     ('mode
      (let ((mode (intern (concat (downcase (symbol-name val))
-                                 "-mode"))))
-       (unless (eq (indirect-function mode)
-                   (indirect-function major-mode))
-         (funcall mode))))
+                          "-mode"))))
+       (set-auto-mode-0 mode t)))
     ('eval
      (pcase val
        (`(add-hook ',hook . ,_) (hack-one-local-variable--obsolete hook)))