master 3b72b47cbd: * lisp/progmodes/elisp-mode.el (elisp--local-variables-1): Fix bug#50034

[Stefan Monnier]

branch: master
commit 3b72b47cbd3e1a4b575d5ecc886e506d22a50a0c
Author: Stefan Monnier <monnier@iro.umontreal.ca>
Commit: Stefan Monnier <monnier@iro.umontreal.ca>

    * lisp/progmodes/elisp-mode.el (elisp--local-variables-1): Fix bug#50034
    
    Don't burp if the arg list of a function is not actually a list.
---
 lisp/progmodes/elisp-mode.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lisp/progmodes/elisp-mode.el b/lisp/progmodes/elisp-mode.el
index 4617a01947..9dc67010aa 100644
--- a/lisp/progmodes/elisp-mode.el
+++ b/lisp/progmodes/elisp-mode.el
@@ -383,7 +383,9 @@ be used instead.
                      (setq sexp nil))
                     (`(lambda ,args . ,body)
                      (elisp--local-variables-1
-                      (append (remq '&optional (remq '&rest args)) vars)
+                      (let ((args (if (listp args) args)))
+                        ;; FIXME: Exit the loop if witness is in args.
+                        (append (remq '&optional (remq '&rest args)) vars))
                       (car (last body))))
                     (`(condition-case ,_ ,e) (elisp--local-variables-1 vars e))
                     (`(condition-case ,v ,_ . ,catches)