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bug#11883: 24.1.50; shell-mode doesn't colorize the prompt


From: Dima Kogan
Subject: bug#11883: 24.1.50; shell-mode doesn't colorize the prompt
Date: Sun, 08 Jul 2012 22:29:35 -0700

When using shell mode (M-x shell), I'm seeing correct colors rendered
for output of commands like 'ls --color=auto'. However this doesn't
appear to apply to the prompt, all of which appears in one, wrong
color. This appears to be related to the prompt not emitting a trailing
newline (which is as it should be).

As a test, I can echo the ANSI codes myself. This produces a
correctly-colored red string:

address@hidden:~$ echo -e "\033[31mtest\033[39m"
test <----- red

But this doesn't. Note it's the same command but without a trailing
newline:

address@hidden:~$ echo -n -e "\033[31mtest\033[39m"
address@hidden:~$ <------ whole thing is blue

So the prompt emits the correct codes (verified with strace), but since
it has no trailing newline, it is rendered wrong, just like the "test"
string above. This is something that worked in emacs23.

Thanks.


In GNU Emacs 24.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.4.2)
 of 2012-06-29 on zelenka, modified by Debian
 (emacs-snapshot package, version 2:20120629-1)
Windowing system distributor `The X.Org Foundation', version 11.0.11201902
Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--host' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.1.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.1.50/site-lisp:/usr/share/emacs/site-lisp'
 '--without-compress-info' '--with-crt-dir=/usr/lib/x86_64-linux-gnu/'
 '--with-x=yes' '--with-x-toolkit=gtk3' '--with-imagemagick=yes'
 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu'
 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g
 -Wl,--as-needed -znocombreloc' 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LC_ALL: C
  value of $LANG: C
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
  shell-dirtrack-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:
M-x s h e l l <return> <down-mouse-2> <mouse-2> C-x 
C-x C-w C-y <home> <return> <C-up> <home> <C-right> 
SPC - n <return> <return> M-x r e p o r t <tab> <r
eturn>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set [2 times]
History item: 1

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