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-rw-r--r--lisp/emacs-lisp/map-ynp.el18
1 files changed, 12 insertions, 6 deletions
diff --git a/lisp/emacs-lisp/map-ynp.el b/lisp/emacs-lisp/map-ynp.el
index 61c04ff7b3e..a61c0adc8fb 100644
--- a/lisp/emacs-lisp/map-ynp.el
+++ b/lisp/emacs-lisp/map-ynp.el
@@ -257,10 +257,15 @@ C-g to quit (cancel the whole command);
;; either long or short answers.
;; For backward compatibility check if short y/n answers are preferred.
-(defcustom read-answer-short (eq (symbol-function 'yes-or-no-p) 'y-or-n-p)
- "If non-nil, accept short answers to the question."
- :type 'boolean
- :version "27.1"
+(defcustom read-answer-short 'auto
+ "If non-nil, `read-answer' accepts single-character answers.
+If t, accept short (single key-press) answers to the question.
+If nil, require long answers. If `auto', accept short answers if
+the function cell of `yes-or-no-p' is set to `y-or-on-p'."
+ :type '(choice (const :tag "Accept short answers" t)
+ (const :tag "Require long answer" nil)
+ (const :tag "Guess preference" auto))
+ :version "26.2"
:group 'minibuffer)
(defconst read-answer-map--memoize (make-hash-table :weakness 'key :test 'equal))
@@ -290,8 +295,9 @@ When `read-answer-short' is non-nil, accept short answers.
Return a long answer even in case of accepting short ones.
When `use-dialog-box' is t, pop up a dialog window to get user input."
- (custom-reevaluate-setting 'read-answer-short)
- (let* ((short read-answer-short)
+ (let* ((short (if (eq read-answer-short 'auto)
+ (eq (symbol-function 'yes-or-no-p) 'y-or-n-p)
+ read-answer-short))
(answers-with-help
(if (assoc "help" answers)
answers