Subject: bug#12573: 24.2; char displayed as number

From: Andreas Röhler <[email-masked]>
Date: Wed, 03 Oct 2012 21:22:13 +0200

with Emacs -Q

in python-mode, in interpreter shell
copyright sign is displayed as number

 >>> print('\xA9')

When trying to save this message, Emacs says:

These default coding systems were tried to encode text
in the buffer `copyright-sign-displayed-as-number.txt':
   (utf-8-emacs-unix (261 . 4194217)) (utf-8-unix (261 . 4194217))
However, each of them encountered characters it couldn't encode:
   utf-8-emacs-unix cannot encode these:
   utf-8-unix cannot encode these:

Click on a character (or switch to this window by `C-x o'
and select the characters by RET) to jump to the place it appears,
where `C-u C-x =' will give information about it.

Select one of the safe coding systems listed below,
or cancel the writing with C-g and edit the buffer
    to remove or modify the problematic characters,
or specify any other coding system (and risk losing
    the problematic characters).

   raw-text emacs-mule no-conversion

When examining the char with C-u C-x =
get

              position: 261 of 3745 (7%), column: 0
             character:  (displayed as ) (codepoint 4194217, #o17777651, #x3fffa9)
     preferred charset: eight-bit (Raw bytes 128-255)
code point in charset: 0xA9
                syntax: w 	which means: word
              category: L:Left-to-right (strong)
           buffer code: #xA9
             file code: not encodable by coding system utf-8-emacs
               display: no font available

Character code properties: customize what to show
   general-category: Cn (Other, Not Assigned)
   decomposition: (4194217) ('')

There are text properties here:
   field                output
   fontified            t
   front-sticky         (field inhibit-line-move-field-capture)
   inhibit-line-move-field-capture t
   rear-nonsticky       t

;;;;;;;;;

In GNU Emacs 24.2.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
  of 2012-08-15
Windowing system distributor `The X.Org Foundation', version 11.0.10903000
Configured using:
  `configure 'CFLAGS=-g -O''

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: de_DE.UTF-8
   value of $XMODIFIERS: @im=local
   locale-coding-system: utf-8-unix
   default enable-multibyte-characters: t

Major mode: Inferior Python

Minor modes in effect:
   compilation-shell-minor-mode: t
   tooltip-mode: t
   mouse-wheel-mode: t
   tool-bar-mode: t
   menu-bar-mode: t
   file-name-shadow-mode: t
   global-font-lock-mode: t
   font-lock-mode: t
   blink-cursor-mode: t
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> C-x C-f <M-backspace>
<M-backspace> e i n . p y <return> C-c ! <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <menu-bar> <Python> <Switch to interpreter>
M-r p r i n C-g C-h <down-mouse-1> <mouse-1> <help-echo>
C-y <backspace> <return> C-x 1 M-x r e p o r t - e
m a c s - b u g <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
(New file)
Mark set

Load-path shadows:
None found.

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