Deleting supplementary characters leaves corruption

[Alexander Winston]

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

M-x shell-command <RET> echo -e "\360\235\204\242" > SupplementaryChar
<RET>
M-x find-file <RET> SupplementaryChar <RET>
M-x delete-char <RET>

At this point, the first byte that comprises the supplementary character
is deleted, leaving the last three bytes' octal escape sequences. The
entire supplementary character should have been deleted.


In GNU Emacs 21.3.50.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2004-04-16 on duende
configured using `configure  'CFLAGS=-ggdb3 -O0 -pipe''

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: en_US.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  encoded-kbd-mode: t
  menu-bar-mode: t
  unify-8859-on-encoding-mode: t
  line-number-mode: t

Recent input:
ESC x r e p o r t - e m a c s - b u g RET

Recent messages:
(/usr/local/bin/emacs --no-init-file --no-site-file)
Loading encoded-kb...done
For information about the GNU Project and its goals, type C-h C-p.
Loading emacsbug...done

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