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-rw-r--r--lisp/vc/diff-mode.el3
1 files changed, 1 insertions, 2 deletions
diff --git a/lisp/vc/diff-mode.el b/lisp/vc/diff-mode.el
index 357ce001b3c..b80337eb742 100644
--- a/lisp/vc/diff-mode.el
+++ b/lisp/vc/diff-mode.el
@@ -272,8 +272,7 @@ and hunk-based syntax highlighting otherwise as a fallback."
(defcustom diff-minor-mode-prefix "\C-c="
"Prefix key for `diff-minor-mode' commands."
- :type '(choice (string "ESC")
- (string "\C-c=") string))
+ :type '(choice (string "\e") (string "\C-c=") string))
(defvar-keymap diff-minor-mode-map
:doc "Keymap for `diff-minor-mode'. See also `diff-mode-shared-map'."