(read-quoted-char): Consistently downcase letter "digits".

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/subr.el b/lisp/subr.el
index 14ae2ba3e85..53c4b2716b3 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -704,7 +704,8 @@ any other non-digit terminates the character code and is then used as input."))
              (and prompt (setq prompt (message "%s %c" prompt char))))
             ((and (<= ?a (downcase char))
                   (< (downcase char) (+ ?a -10 (min 26 read-quoted-char-radix))))
-             (setq code (+ (* code read-quoted-char-radix) (+ 10 (- char ?a))))
+             (setq code (+ (* code read-quoted-char-radix)
+                           (+ 10 (- (downcase char) ?a))))
              (and prompt (setq prompt (message "%s %c" prompt char))))
             ((and (not first) (eq char ?\C-m))
              (setq done t))