GNU bug report logs - #6085
Eshell doesn't handle ANSI escapes/colors well

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From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: bug#6085: Eshell doesn't handle ANSI escapes/colors well
Date: Mon, 03 May 2010 07:37:31 +0200

Ken Hori <fplemma <at> gmail.com> writes:

> From Emacs bzr HEAD:
>
> Eshell doesn't handle a terminal escape code like ^[.
>
> My eshell-output-filter-functions:
>  '(eshell-output-filter-functions (quote (eshell-handle-ansi-color
> eshell-handle-control-codes eshell-watch-for-password-prompt
> eshell-postoutput-scroll-to-bottom)))
>
> Example:
> [~/emacs.20100501/lisp/eshell]$ export TERM=xterm-256color
> [~/emacs.20100501/lisp/eshell]$ *grep --color=auto ansi esh-*
> ^[[Kesh-mode.el^[[K^[[K:^[[K    eshell-handle-^[[Kansi^[[K-color
> ^[[Kesh-mode.el^[[K^[[K:^[[K(autoload
> '^[[Kansi^[[K-color-apply-on-region "^[[Kansi^[[K-color")
> ^[[Kesh-mode.el^[[K^[[K:^[[K(defun eshell-handle-^[[Kansi^[[K-color ()
> ^[[Kesh-mode.el^[[K^[[K:^[[K  (^[[Kansi^[[K-color-apply-on-region
> eshell-last-output-start
> ^[[Kesh-mode.el^[[K^[[K:^[[K		   'eshell-handle-^[[Kansi^[[K-color)
> ^[[Kesh-var.el^[[K^[[K:^[[K;; is identical to just saying (lisp); but
> with the variable exp^[[Kansi^[[Kon
>
>
> `term-handle-ansi-escape' from term.el seems to be be handling
> ansi escapes very well. Maybe we can integrate  a modified
> version of it into Eshell.

This was working some time ago so maybe looking at what have changed and
reenable this feature should be good.

-- 
Thierry Volpiatto
Gpg key: http://pgp.mit.edu/

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