GNU bug report logs - #71259
29.1; Tramp connection property "direct-async-process" causes job control not to work in M-x shell buffers

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 71259 in the body.
You can then email your comments to 71259 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Alex Hutcheson <alexhutcheson <at> google.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.1; Tramp connection property "direct-async-process" causes job
 control not to work in M-x shell buffers
Date: Wed, 29 May 2024 13:55:43 +0000

To reproduce:

1. Start emacs with emacs -Q

2. Eval the following:

(require 'tramp)
;; Enable direct-async-process for all SSH connections
(add-to-list 'tramp-connection-properties
             (list "/ssh:.*" "direct-async-process" t))

3. Start a Tramp SSH connection: C-x C-f /ssh:some.host.com:

4. Start a shell buffer with M-x shell. Choose sh or bash as remote
shell (haven't tested with others)

Expected behavior:

Shell buffer shows a shell on the remote host. Job control (C-c C-z),
fg, bg, etc. all work.

Actual behavior:

Shell buffer starts a shell, but shows errors at the top of the buffer:

sh: cannot set terminal process group (128765): Inappropriate ioctl for  
device
sh: no job control in this shell

Shell mostly works, but job control features don't work.
C-c C-z does nothing
C-c C-c kills the shell, rather than the currently running job
fg and bg give errors like:
sh: fg: no job control

In GNU Emacs 29.1 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.18.0, Xaw3d scroll bars) of 2024-01-22, modified by Debian
 built on kokoro-ubuntu
System Description: Debian GNU/Linux rodete


Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM HARFBUZZ JPEG JSON LCMS2
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XAW3D XDBE XIM XINPUT2 XPM
LUCID ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Message #8 received at 71259 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Alex Hutcheson via "Bug reports for GNU Emacs, the Swiss army knife of
 text editors" <bug-gnu-emacs <at> gnu.org>
Cc: 71259 <at> debbugs.gnu.org, Alex Hutcheson <alexhutcheson <at> google.com>
Subject: Re: bug#71259: 29.1; Tramp connection property
 "direct-async-process" causes job control not to work in M-x shell buffers
Date: Thu, 30 May 2024 19:00:19 +0200

Alex Hutcheson via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs <at> gnu.org> writes:

Hi Alex,

> Actual behavior:
>
> Shell buffer starts a shell, but shows errors at the top of the buffer:
>
> sh: cannot set terminal process group (128765): Inappropriate ioctl
> for device
> sh: no job control in this shell
>
> Shell mostly works, but job control features don't work.
> C-c C-z does nothing
> C-c C-c kills the shell, rather than the currently running job
> fg and bg give errors like:
> sh: fg: no job control

I could reproduce & fix it in recent Tramp sources. Pushed to the
repositories.

Unfortunately, the fix cannot be backported to Emacs 29 trivially. So
you might try either Emacs 30 or Tramp 2.7 from the respective git
repositories. Or you wait a little bit, until Tramp 2.7.1 appears on GNU
ELPA. Planned for end of June.

Best regards, Michael.

Message #14 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Alex Hutcheson <alexhutcheson <at> google.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: "Alex Hutcheson via Bug reports for GNU Emacs,
 the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>,
 71259 <at> debbugs.gnu.org
Subject: Re: bug#71259: 29.1; Tramp connection property "direct-async-process"
 causes job control not to work in M-x shell buffers
Date: Thu, 30 May 2024 13:02:30 -0400

[Message part 1 (text/plain, inline)]

Great, thanks for the quick fix!

On Thu, May 30, 2024 at 1:00 PM Michael Albinus <michael.albinus <at> gmx.de>
wrote:

> Alex Hutcheson via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs <at> gnu.org> writes:
>
> Hi Alex,
>
> > Actual behavior:
> >
> > Shell buffer starts a shell, but shows errors at the top of the buffer:
> >
> > sh: cannot set terminal process group (128765): Inappropriate ioctl
> > for device
> > sh: no job control in this shell
> >
> > Shell mostly works, but job control features don't work.
> > C-c C-z does nothing
> > C-c C-c kills the shell, rather than the currently running job
> > fg and bg give errors like:
> > sh: fg: no job control
>
> I could reproduce & fix it in recent Tramp sources. Pushed to the
> repositories.
>
> Unfortunately, the fix cannot be backported to Emacs 29 trivially. So
> you might try either Emacs 30 or Tramp 2.7 from the respective git
> repositories. Or you wait a little bit, until Tramp 2.7.1 appears on GNU
> ELPA. Planned for end of June.
>
> Best regards, Michael.
>

[Message part 2 (text/html, inline)]

Message #22 received at 71259-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: 71259-done <at> debbugs.gnu.org
Cc: alexhutcheson <at> google.com
Subject: Re: bug#71259: 29.1; Tramp connection property
 "direct-async-process" causes job control not to work in M-x shell buffers
Date: Sun, 30 Jun 2024 09:38:15 +0200

Version: 30.1

Michael Albinus <michael.albinus <at> gmx.de> writes:

> I could reproduce & fix it in recent Tramp sources. Pushed to the
> repositories.
>
> Unfortunately, the fix cannot be backported to Emacs 29 trivially. So
> you might try either Emacs 30 or Tramp 2.7 from the respective git
> repositories. Or you wait a little bit, until Tramp 2.7.1 appears on GNU
> ELPA. Planned for end of June.

Tramp 2.7.1 has appeared on GNU ELPA. I'm closing this bug therefore.

Best regards, Michael.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.