diff --git a/etc/NEWS b/etc/NEWS index 2bad41f5ee..590fea5c97 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -2408,6 +2408,11 @@ and display the result. When non-nil, then functions 'read-char-choice' and 'y-or-n-p' (respectively) use the function 'read-key' to read a character instead of using the minibuffer. +--- +** New variable 'use-short-answers' to use 'y-or-n-p' instead of 'yes-or-no-p'. +This relieves of the need to define an alias that maps one to another +in the init file. + +++ ** 'set-window-configuration' now takes an optional 'dont-set-frame' parameter which, when non-nil, instructs the function not to select diff --git a/lisp/cus-start.el b/lisp/cus-start.el index c0a4a6dda0..d17c419c36 100644 --- a/lisp/cus-start.el +++ b/lisp/cus-start.el @@ -302,6 +302,7 @@ minibuffer-prompt-properties--setter ;; fns.c (use-dialog-box menu boolean "21.1") (use-file-dialog menu boolean "22.1") + (use-short-answers menu boolean "28.1") (focus-follows-mouse frames (choice (const :tag "Off (nil)" :value nil) diff --git a/lisp/emacs-lisp/map-ynp.el b/lisp/emacs-lisp/map-ynp.el index 14112a1c14..86a0c76fd1 100644 --- a/lisp/emacs-lisp/map-ynp.el +++ b/lisp/emacs-lisp/map-ynp.el @@ -265,7 +265,8 @@ read-answer-short "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-n-p'." +`use-short-answers' is non-nil, or the function cell of `yes-or-no-p' +is set to `y-or-n-p'." :type '(choice (const :tag "Accept short answers" t) (const :tag "Require long answer" nil) (const :tag "Guess preference" auto)) @@ -304,7 +305,8 @@ read-answer When `use-dialog-box' is t, pop up a dialog window to get user input." (let* ((short (if (eq read-answer-short 'auto) - (eq (symbol-function 'yes-or-no-p) 'y-or-n-p) + (or use-short-answers + (eq (symbol-function 'yes-or-no-p) 'y-or-n-p)) read-answer-short)) (answers-with-help (if (assoc "help" answers) diff --git a/src/fns.c b/src/fns.c index c16f9c6399..7ab4bb525d 100644 --- a/src/fns.c +++ b/src/fns.c @@ -2873,6 +2873,11 @@ DEFUN ("yes-or-no-p", Fyes_or_no_p, Syes_or_no_p, 1, 1, 0, return obj; } + if (use_short_answers) + { + return call1 (intern ("y-or-n-p"), prompt); + } + AUTO_STRING (yes_or_no, "(yes or no) "); prompt = CALLN (Fconcat, prompt, yes_or_no); @@ -5904,6 +5909,15 @@ syms_of_fns (void) this variable. */); use_file_dialog = true; + DEFVAR_BOOL ("use-short-answers", use_short_answers, + doc: /* Non-nil means `yes-or-no-p' uses shorter answers "y" or "n". +It's discouraged to use single-key answers because `yes-or-no-p' is +intended to be used when it's thought that you should not respond too +quickly, and giving the wrong answer would have serious consequences. +When non-nil, it uses `y-or-n-p'. In this case it means also obeying +the value of `y-or-n-p-use-read-key'. */); + use_short_answers = false; + defsubr (&Sidentity); defsubr (&Srandom); defsubr (&Slength);