raw-text coding system confuses input method

[noniq]

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

*) Create a file with a non-latin-1 character in it, for example with
   echo -e '\205' >emacsbug.txt

*) Start emacs with
   emacs -q --no-site-file emacsbug.txt

*) Emacs shows the content of the file as "\205",
   describe-current-coding-system gives:
     Coding system for saving this buffer: t -- raw-text-unix

*) Activate input method with C-x RET C-\ rfc1345 RET

*) Enter mnemonic for "horizontal ellipsis": &.3

*) Emacs inserts a character thats surely not an ellipsis, it looks
   like | but with a gap in the middle. C-u C-x = on this character
   gives:

  character: ¦ (0246, 166, 0xa6)
    charset: eight-bit-graphic (8-bit graphic char (0xA0..0xFF))
 code point: 166
     syntax:    which means: whitespace
buffer code: 0xA6
  file code: 0xA6 (encoded by coding system raw-text-unix)
    display: by display table entry [?¦] (see below)

The display table entry is displayed by these fonts (glyph codes):
¦: -outline-Courier New-normal-r-normal-normal-13-97-96-96-c-80-iso8859-1 (0xA6)
 
 

In GNU Emacs 21.3.50.1 (i386-mingw-nt5.1.2600)
 of 2004-02-13 on BERATUNG4
configured using `configure --with-gcc (3.3) --cflags -I../../jpeg-6b-1/include 
-I../../libpng-1.2.4-1/include -I../../tiff-3.5.7/include 
-I../../xpm-nox-4.2.0/include -I../../zlib-1.1.4-1/include'

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: DEA
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Major mode: Text

Minor modes in effect:
  mouse-sel-mode: t
  iswitchb-mode: t
  file-name-shadow-mode: t
  recentf-mode: t
  cua-mode: t
  display-time-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<next> <next> <next> <next> <next> <next> <prior> <prior> 
<prior> <prior> <prior> <prior> <prior> <prior> <wheel-up> 
<next> M-x r e o r <backspace> <backspace> p o r t 
<tab> <return> N <backspace> n o n <backspace> <backspace> 
<backspace> N o n - l <backspace> <backspace> - l a 
t i n - 1 SPC c h a r a c t e r s SPC i n SPC b u f 
f e r SPC w i t h SPC d e <lwindow> C-g C-x b C-g M-x 
r e p r <backspace> o r t - e m <tab> <return>

Recent messages:
Undo!
Making completion list... [4 times]
Quit
Loading emacsbug...done
Quit [2 times]
byte-code: Command attempted to use minibuffer while in minibuffer
Quit
Mark set [2 times]
mwheel-scroll: Beginning of buffer [3 times]
Quit [2 times]