Restore keystroke echo in 'C-q'

* lisp/simple.el (read-quoted-char): Use 'read-event' instead of
'read-key', to avoid losing the keystroke echo in 'C-q'.  (Bug#24635)

1 files changed, 12 insertions, 8 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index 295f8c63867..162f6dd89c5 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -681,7 +681,7 @@ for numeric input."
   (let ((message-log-max nil)
         (help-events (delq nil (mapcar (lambda (c) (unless (characterp c) c))
                                        help-event-list)))
-        done (first t) (code 0) translated)
+        done (first t) (code 0) char translated)
     (while (not done)
       (let ((inhibit-quit first)
             ;; Don't let C-h or other help chars get the help
@@ -693,15 +693,21 @@ for numeric input."
 or the octal character code.
 RET terminates the character code and is discarded;
 any other non-digit terminates the character code and is then used as input."))
-        (setq translated (read-key (and prompt (format "%s-" prompt))))
+        (setq char (read-event (and prompt (format "%s-" prompt)) t))
         (if inhibit-quit (setq quit-flag nil)))
+      ;; Translate TAB key into control-I ASCII character, and so on.
+      ;; Note: `read-char' does it using the `ascii-character' property.
+      ;; We tried using read-key instead, but that disables the keystroke
+      ;; echo produced by 'C-q', see bug#24635.
+      (let ((translation (lookup-key local-function-key-map (vector char))))
+        (setq translated (if (arrayp translation)
+                             (aref translation 0)
+                           char)))
       (if (integerp translated)
           (setq translated (char-resolve-modifiers translated)))
       (cond ((null translated))
             ((not (integerp translated))
-             (setq unread-command-events
-                   (nconc (listify-key-sequence (this-single-command-raw-keys))
-                          unread-command-events)
+             (setq unread-command-events (list char)
                    done t))
             ((/= (logand translated ?\M-\^@) 0)
              ;; Turn a meta-character into a character with the 0200 bit set.
@@ -720,9 +726,7 @@ any other non-digit terminates the character code and is then used as input."))
             ((and (not first) (eq translated ?\C-m))
              (setq done t))
             ((not first)
-             (setq unread-command-events
-                   (nconc (listify-key-sequence (this-single-command-raw-keys))
-                          unread-command-events)
+             (setq unread-command-events (list char)
                    done t))
             (t (setq code translated
                      done t)))