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Don't infinite loop in map-y-or-n-p if at the end of kmacro

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Previously, if map-y-or-n-p got -1 from read-event (indicating no
input due to the end of a keyboard macro), it would just infinite
loop.

Now it behaves like other commands which use read-event/read-char/etc,
and just errors when we try to look up -1 in our keymap and find
nothing.

Also, just for the sake of users, print a slightly prettier message
when this happens.

* lisp/emacs-lisp/map-ynp.el (map-y-or-n-p): Don't loop if we reach
the end of a keyboard macro.  (Bug#67046)
This commit is contained in:
Spencer Baugh 2023-11-10 11:27:10 -05:00 • committed by Eli Zaretskii
parent 1a1f47e4a1
commit 7cfe088bc3
1 changed files with 4 additions and 6 deletions
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10
lisp/emacs-lisp/map-ynp.el
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@ -168,16 +168,14 @@ The function's value is the number of actions taken."
(key-description (vector help-char)))
(if minibuffer-auto-raise
(raise-frame (window-frame (minibuffer-window))))
(while (progn
(setq char (read-event))
;; If we get -1, from end of keyboard
;; macro, try again.
(equal char -1)))
(setq char (read-event))
;; Show the answer to the question.
(message "%s(y, n, !, ., q, %sor %s) %s"
prompt user-keys
(key-description (vector help-char))
(single-key-description char)))
(if (equal char -1)
"[end-of-keyboard-macro]"
(single-key-description char))))
(setq def (lookup-key map (vector char))))
(cond ((eq def 'exit)
(setq next (lambda () nil)))