GNU bug report logs - #2057
23.0.60; delete key and deletechar

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From: Robert Brown <robert.brown <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: bug#2057: 23.0.60; delete key and deletechar
Date: Sun, 25 Jan 2009 18:01:26 -0500

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug <at> gnu.org mailing list.

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

I start Emacs 23.0.60.2 on Ubuntu 8.10 inside a gnome-terminal emulation
window using the command "emacs -q -nw".  The backspace key on my keyboard is
set up to generate ASCII code 127, but Emacs incorrectly maps this code to
deletechar with input-decode-map which is:

    (keymap (127 . [deletechar]) (27 keymap (79 keymap (83 . ....

I believe this input translation is set up by term_get_fkeys_1 in term.c when
it looks at the termcap/terminfo function key definitions for my terminal
type, xterm-color, and sees that the termcap description contains:

    kD=\177

which means that the delete *function* key produces ASCII code 127.

Emacs should look at both kD and kb.  If they are the same ASCII character,
then Emacs should not install a translation in input-decode-map for delete.


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/local/software/package/emacs-23.0.60.2/share/emacs/23.0.60/etc/DEBUG
for instructions.


In GNU Emacs 23.0.60.2 (i686-pc-linux-gnu)
 of 2009-01-18 on ugg
configured using `configure  '--without-x'
'--prefix=/local/software/package/emacs-23.0.60.2''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: C
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Info

Minor modes in effect:
  savehist-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC [ > 1 ; 1 7 0 4 ; 0 c C-h i m e m a c s RET C-s
b u g SPC C-a C-n C-f C-f C-f C-f C-f C-f RET SPC SPC
ESC x r e p o r t - e m a c s - b u g RET

Recent messages:
("emacs")
Composing main Info directory...done
Mark saved where search started

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