Add lexical-binding cookie to autoload files

* build-aux/update-subdirs:
* lisp/emacs-lisp/autoload.el (autoload-rubric): Add lexical-binding
cookie to generated files (bug#44854).

diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index 07bda537b39bd7f99b471d22fa10a90375afa8dd..4d0c6c2f6824d1ac61bac00ddac744f7f7f24c85 100644 (file)
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -368,7 +368,8 @@ FILE's name."
   (let ((basename (file-name-nondirectory file))
        (lp (if (equal type "package") (setq type "autoloads"))))
     (concat ";;; " basename
-           " --- automatically extracted " (or type "autoloads") "\n"
+            " --- automatically extracted " (or type "autoloads")
+            "  -*- lexical-binding: t -*-\n"
            ";;\n"
            ";;; Code:\n\n"
            (if lp