Emacs just closed with 4 running shell buffers

Emacs just closed with 4 running shell buffers

[Chris Moore]

I don't know what I just typed, but somehow I managed to lose 4 large
shell buffers.

Usually when I have inferior shell processes running and hit C-x C-c,
I am prompted "Active processes exist; kill them and exit anyway?"

A few minutes ago I had 4 running shell processes, one of them was
part-way through a build, I typed a few characters by mistake and
Emacs closed down completely.  I'm not sure what I typed, but I
certainly didn't type "yes RET", which I thought was the only way to
lose my shell buffers.  I didn't kill all 4 processes, either.  I was
holding the control key at the time, and could well have typed
something involving C-x C-c.

I see that C-u C-x C-c will silently save and quit, but even that
prompts about running processes.  So what happened?  And can I stop it
happening again?

Re: Emacs just closed with 4 running shell buffers

[Andreas Schwab]

"Chris Moore" <christopher.ian.moore@gmail.com> writes:

> I see that C-u C-x C-c will silently save and quit, but even that
> prompts about running processes.  So what happened?  And can I stop it
> happening again?

Perhaps Emacs just crashed?  Try running it under gdb which makes it
possible to examine such a crash when it happens again.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: Emacs just closed with 4 running shell buffers

[Chris Moore]

On 10/15/07, Andreas Schwab <schwab@suse.de> wrote:
> Perhaps Emacs just crashed?  Try running it under gdb which makes it
> possible to examine such a crash when it happens again.

Maybe, but I don't see a core dump from Emacs anywhere (and I see lots
from programs I work on), and I do have the feeling I hit <something>
C-x C-c <something> just before Emacs closed.

I suspect the new emacsclient behaviour - see the C-x C-c docstring:

"If emacsclient was started with a list of filenames to edit, then
only these files will be asked to be saved."

is there some combination of emacsclient calls that results in the
last remaining Emacs frame being closed without confirmation when
running processes exist?

Re: Emacs just closed with 4 running shell buffers

[Richard Stallman]

    > I see that C-u C-x C-c will silently save and quit, but even that
    > prompts about running processes.  So what happened?  And can I stop it
    > happening again?

    Perhaps Emacs just crashed?

If it had crashed, the shell would have printed a message to that
effect.  Did that happen?

				 Try running it under gdb which makes it
    possible to examine such a crash when it happens again.

It is a good idea to run Emacs under GDB all the time, in case something
crashed.  But it is unlikely he will type the same accidental input
a second time.  I don't think we can expect to get more info about
this problem that way.  I think deduction is the only tool we have
available.

I looked at the code in save-buffers-kill-emacs, and I cannot see any
way that it could bypass the confirmation about killing processes.

Re: Emacs just closed with 4 running shell buffers

[Andreas Schwab]

Richard Stallman <rms@gnu.org> writes:

>     > I see that C-u C-x C-c will silently save and quit, but even that
>     > prompts about running processes.  So what happened?  And can I stop it
>     > happening again?
>
>     Perhaps Emacs just crashed?
>
> If it had crashed, the shell would have printed a message to that
> effect.

This assumes that the shell that started it still exists or even existed
in the first place, which is rather unlikely nowadays.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: Emacs just closed with 4 running shell buffers

[Chris Moore]

On 10/15/07, Andreas Schwab <schwab@suse.de> wrote:
> Richard Stallman <rms@gnu.org> writes:
> > If it had crashed, the shell would have printed a message to that
> > effect.
>
> This assumes that the shell that started it still exists or even existed
> in the first place, which is rather unlikely nowadays.

I ran Emacs by clicking an icon in the panel at the top of the screen.
 I don't know where the message from Emacs would have ended up.  I've
not had the same problem again since.

Re: Emacs just closed with 4 running shell buffers

[Stefan Monnier]

>     Perhaps Emacs just crashed?
> If it had crashed, the shell would have printed a message to that
> effect.  Did that happen?

The shell may simply not be around any more (I often start some of my
programs via (foo&) so they do not interfere with process control of other
processes).


        Stefan