is this a bug? string-equal seems to act strangely

[Chris]

Hex 80 is equal to octal 200, so why does string-equal give these results?

  ELISP> (string-equal "\200\x80" "\x80\200")
  t

  ELISP> (string-equal "\200" "\x80")
  nil



In GNU Emacs 22.0.92.4 (i686-pc-linux-gnu, GTK+ Version 2.8.20)
 of 2007-01-10 on trpaslik
X server distributor `The X.Org Foundation', version 11.0.70101000
configured using `configure  '--with-gtk' '--prefix' '/usr/local' '--with-xpm' 
'--with-jpeg' '--with-png' '--with-gif''

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

Major mode: IELM

Minor modes in effect:
  shell-dirtrack-mode: t
  show-paren-mode: t
  iswitchb-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t