GNU bug report logs - #12842
24.2.50; ansi-term does not recognize escape sequence

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Marcelo Lacerda <marceloslacerda <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.2.50; ansi-term does not recognize escape sequence
Date: Fri, 9 Nov 2012 07:35:03 -0200

Whenever I try to use a escape sequence in ansi-term "C-c" it is sent
immediatelly to the shell.

Steps:

emacs -Q RET
M-x ansi-term RET
C-c

In GNU Emacs 24.2.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.10)
 of 2012-09-14 on cho-clotho
Windowing system distributor `The X.Org Foundation', version 11.0.11204000
Configured using:
 `configure '--prefix=/home/marcelo/bin/emacs_prefix''

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

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  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 <up> a n s i - t e r m <return> <return> C-c M-x
C-x b <return> M-x a n <backspace> <backspace> r e
<tab> p <tab> o r <tab> <return>

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--
Marcelo Lacerda

Message #8 received at 12842 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Marcelo Lacerda <marceloslacerda <at> gmail.com>
Cc: 12842 <at> debbugs.gnu.org
Subject: Re: bug#12842: 24.2.50; ansi-term does not recognize escape sequence
Date: Fri, 09 Nov 2012 14:00:35 -0500

Marcelo Lacerda wrote:

> Whenever I try to use a escape sequence in ansi-term "C-c" it is sent
> immediatelly to the shell.
>
> Steps:
>
> emacs -Q RET
> M-x ansi-term RET
> C-c

Thanks for the report. I think this is due to the 2012-05-11 changes to
term-set-escape-char.

term.el does this at top-level:

(term-set-escape-char (or term-escape-char ?\C-c))

M-x ansi-term does this:

(term-set-escape-char ?\C-x)

In Emacs 24.2, the net result is that both C-x and C-c acts as escape
chars in ansi-term. In 24.2.50, the C-x binding replaces the C-c one.
I don't know what the intended ansi-term behaviour was.

Message #11 received at 12842 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Marcelo Lacerda <marceloslacerda <at> gmail.com>
Cc: 12842 <at> debbugs.gnu.org
Subject: Re: bug#12842: 24.2.50; ansi-term does not recognize escape sequence
Date: Fri, 09 Nov 2012 14:45:04 -0500

I suppose this change will bring back the traditional ansi-term
behaviour. The other option is to remove this term-set-escape-char call
altogether (then we get the same bug report from someone used to the C-x
binding).

*** lisp/term.el	2012-09-27 07:05:37 +0000
--- lisp/term.el	2012-11-09 19:41:36 +0000
***************
*** 4180,4186 ****
    ;; your mileage may definitely vary, maybe it's better to put this in your
    ;; .emacs ...
  
!   (term-set-escape-char ?\C-x)
  
    (switch-to-buffer term-ansi-buffer-name))
  
--- 4180,4187 ----
    ;; your mileage may definitely vary, maybe it's better to put this in your
    ;; .emacs ...
  
!   (let (term-escape-char)
!     (term-set-escape-char ?\C-x))
  
    (switch-to-buffer term-ansi-buffer-name))

Message #16 received at 12842-done <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 12842-done <at> debbugs.gnu.org
Subject: Re: bug#12842: 24.2.50; ansi-term does not recognize escape sequence
Date: Thu, 15 Nov 2012 01:18:33 -0500

Version: 24.3

No comments, so I installed my suggestion in emacs-24.

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