escape characters in emacs20 shell mode

escape characters in emacs20 shell mode

[Nimar Arora]

Hi,

I'm running emacs20 on a Linux (Debian - Woody/stable)
virtual console. When I enter an emacs shell and try
to execute some command - like 'ls' - the output
contains a whole of junk - [[0m etc. These look like
the escape characters which can control the display
attributes on some terminals. I don't understand why
I'm getting these. I don't even have a .emacs file
yet, so I haven't changed the default configuration.

I tried, 'E-x shell-strip-ctrl-m' but to no avail. I
also tried to lookup the info on Emacs shell mode to
see if Debian has created some funky shell mode but
couldn't find anything.

Thanks,

Nimar

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Re: escape characters in emacs20 shell mode

[Frédéric Bothamy]

* Nimar Arora <nimar_arora@yahoo.com> [2002-11-13 10:21] :
> Hi,
> 
> I'm running emacs20 on a Linux (Debian - Woody/stable)
> virtual console. When I enter an emacs shell and try
> to execute some command - like 'ls' - the output
> contains a whole of junk - [[0m etc. These look like
> the escape characters which can control the display
> attributes on some terminals. I don't understand why
> I'm getting these. I don't even have a .emacs file
> yet, so I haven't changed the default configuration.

You probably have an alias on ls like alias='ls --color=auto'. These
ares color codes. Unalias ls and it should work as you want.

I still don't understand why auto-color tries to color on a dumb
terminal (same here). Probably a wrong terminfo/termcap definition.

Fred

Re: escape characters in emacs20 shell mode

[Daniel Jensen]

Nimar Arora <nimar_arora@yahoo.com> writes:

> I'm running emacs20 on a Linux (Debian - Woody/stable)
> virtual console. When I enter an emacs shell and try
> to execute some command - like 'ls' - the output
> contains a whole of junk - [[0m etc. These look like
> the escape characters which can control the display
> attributes on some terminals. I don't understand why
> I'm getting these. I don't even have a .emacs file
> yet, so I haven't changed the default configuration.

Try putting this in your .emacs:

(require 'ansi-color)
(setq ansi-color-for-comint-mode t)

Or, use eshell instead.

> I tried, 'E-x shell-strip-ctrl-m' but to no avail. I
> also tried to lookup the info on Emacs shell mode to
> see if Debian has created some funky shell mode but
> couldn't find anything.

shell-strip-ctrl-m doesn't remove those color escape codes. It does
exactly what the name suggests, removes ^M's from output.

-- 
Daniel Jensen
: (format (concat "mailto:" "%s@%s.%s") "daniel" "bigwalter" "net")

Re: escape characters in emacs20 shell mode

[Kai Großjohann]

Frédéric Bothamy <fbothamy@mail.dotcom.fr> writes:

> I still don't understand why auto-color tries to color on a dumb
> terminal (same here). Probably a wrong terminfo/termcap definition.

Is $TERM really `dumb' in an Emacs shell?

kai
-- 
~/.signature is: umop ap!sdn    (Frank Nobis)

Re: escape characters in emacs20 shell mode

[Frédéric Bothamy]

* Kai Großjohann <kai.grossjohann@uni-duisburg.de> [2002-11-16 17:30] :
> Frédéric Bothamy <fbothamy@mail.dotcom.fr> writes:
> 
> > I still don't understand why auto-color tries to color on a dumb
> > terminal (same here). Probably a wrong terminfo/termcap definition.
> 
> Is $TERM really `dumb' in an Emacs shell?

Using M-x shell, yes (for me under GNU Emacs 21.2.1), using eshell
TERM is not defined.

Fred

Re: escape characters in emacs20 shell mode

[Ivan Kanis]

    Martin> Maybe because it isn't this dumb. I like the colored
    Martin> output in shell mode ;) You might try this to deal with
    Martin> the escape sequences:

    Martin> (autoload 'ansi-color-for-comint-mode-on "ansi-color" nil t)
    Martin>  (add-hook 'shell-mode-hook 'ansi-color-for-comint-mode-on)

Ah what a neat trick. I have been putting up with no colors for years
because I thought it was something that didn't work.

Now would it be possible to pass the tab command directly to the
shell? Now that bash has programmable tab completion I would like to
use it withing emacs. I would like to have the same behavior when I am
running bash in a console and when it's running in emacs.

Ivan
-- 
/-----------------------------------------------------------------------------*
|    "I often quote myself; it adds spice to my     |        Ivan Kanis       |
|    conversation."                                 |     ivank@juliva.com    |
|    (George Bernard Shaw)                          |      www.juliva.com     |
*-----------------------------------------------------------------------------/

Re: escape characters in emacs20 shell mode

[Kai Großjohann]

Ivan Kanis <ivank@juliva.com> writes:

> Now would it be possible to pass the tab command directly to the
> shell? Now that bash has programmable tab completion I would like to
> use it withing emacs. I would like to have the same behavior when I am
> running bash in a console and when it's running in emacs.

I vaguely remember that somebody posted something like this for
tcsh.  Maybe it was called tcsh-completion.el.  But it was many years
ago, so I don't remember.

kai
-- 
~/.signature is: umop ap!sdn    (Frank Nobis)