1 files changed, 9 insertions, 0 deletions

diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index 0493dd0894c..609b5572a08 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -4436,6 +4436,7 @@ The format is suitable for use with `easy-menu-define'."
   (let ((map (make-keymap)))
     (set-keymap-parent map widget-keymap)
     (define-key map [remap self-insert-command] 'custom-no-edit)
+    (define-key map "\^m" 'custom-newline)
     (define-key map " " 'scroll-up)
     (define-key map "\177" 'scroll-down)
     (define-key map "\C-c\C-c" 'Custom-set)
@@ -4452,6 +4453,14 @@ The format is suitable for use with `easy-menu-define'."
   (interactive "@d")
   (error "You can't edit this part of the Custom buffer"))
 
+(defun custom-newline (pos &optional event)
+  "Invoke button at POS, or refuse to allow editing of Custom buffer."
+  (interactive "@d")
+  (let ((button (get-char-property pos 'button)))
+    (if button
+        (widget-apply-action button event)
+      (error "You can't edit this part of the Custom buffer"))))
+
 (easy-menu-define Custom-mode-menu
     custom-mode-map
   "Menu used in customization buffers."