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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: M-x shell and escape sequences
Date: Wed, 27 Dec 2006 10:31:07 +0200
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> From: reader@newsguy.com
> Date: Tue, 26 Dec 2006 20:03:29 -0600
> 
> Using M-x eshell `ls' behaves as ecpected and displays the colors.

It's a different `ls', the one built into Eshell (at least by default,
unless you changed some options).

> Should I be able to run M-x shell (not eshell) then `ls' and not see
> escape sequences?

Yes, but it's your setup: make sure `ls' is invoked with --colors=auto
option, not with --colors=always.

Alternatively, use ansi-colors.el.