args-out-of-range for describe-key if minibuffer echo present

[Chong Yidong]

emacs -Q
M-x set-variable RET debug-on-error RET t
C-h k
C-x
[wait for about 1 second for the minibuffer echo to show up]
TAB
---> Debugger entered--Lisp error: (args-out-of-range "C-x tab" 0 14)
  call-interactively(describe-key)

Waiting for the minibuffer echo is crucial for this to show up; otherwise
describe-key shows the binding for C-x TAB correctly.


In GNU Emacs 21.3.50.1 (i386-mingw-nt5.0.2195)
 of 2005-02-08 on FOO
Distributor `Microsoft Corp.', version 5.0.2195
configured using `configure --with-gcc (3.2) --no-opt'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENU
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Debugger

Minor modes in effect:
  encoded-kbd-mode: t
  mouse-wheel-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  line-number-mode: t

Recent input:
<help-echo> M-x s e t SPC v a r <tab> <return> d e
b u g - o n - e r r o r <return> t <return> C-h k C-x
<tab> M-x r e p o r t SPC e m a <tab> <return>

Recent messages:
(C:\home\emacs\bin\emacs.exe -Q)
Loading encoded-kb...done
Loading image...done
Loading help-fns...done
Note, built-in variable `x-use-old-gtk-file-dialog' not bound
Note, built-in variable `x-use-underline-position-properties' not bound
Loading easymenu...done
Loading debug...done
Entering debugger...
Loading emacsbug...done