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Re: run emacs in batch mode without a tty
From: |
Sam Halliday |
Subject: |
Re: run emacs in batch mode without a tty |
Date: |
Fri, 3 Jul 2015 14:52:43 -0700 (PDT) |
User-agent: |
G2/1.0 |
On Friday, 3 July 2015 22:25:10 UTC+1, Sam Halliday wrote:
> Aha! It would appear that when emacs is started in -batch mode then the
> program exits when it runs through the initial script.
>
> But my tests are starting up a process, attaching a sentinel and then
> reacting to some triggers in that file. Under non-batch mode, emacs stays
> open until I call `kill-emacs`... but *now* it's dying too early.
>
> So my question then becomes: is there a way to stop emacs -batch from
> terminating when it reaches the end of the script? i.e. require an explicit
> kill-emacs call.
Bah! Even if I (sit-for 30) something else is ending the script early, the app
only runs for a few seconds. I've commented out all the (kill-emacs) calls in
my code but I can't see what's terminating the app. I've also added a
kill-emacs-hook to print the backtrace, and this is all I see:
backtrace()
(message "%s" (backtrace))
(lambda nil (message "%s" (backtrace)))()
kill-emacs(t)
command-line()
normal-top-level()
so I have no idea where the normal-top-level / command-line (kill-emacs) call
is being called... since my app should be (sit-for ...)-ing.
> On Friday, 3 July 2015 21:43:27 UTC+1, Sam Halliday wrote:
> > On Friday, 3 July 2015 21:14:36 UTC+1, Eli Zaretskii wrote:
> > > > Date: Fri, 3 Jul 2015 10:07:06 -0700 (PDT)
> > > > From: Sam Halliday <sam.halliday@gmail.com>
> > > >
> > > > > emacs -batch --eval "(princ \"Hello, world\!\n\")" < /dev/null > foo
> > > >
> > > > Aah, the difference is that you're using `-batch`
> > >
> > > Excuse me? It was you who asked specifically about the batch mode:
> > >
> > > > Is it possible to run emacs in batch mode without access to a tty? Is
> > > > there a way to mock a tty for these purposes?
> > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > I wasn't aware that there was a flag to turn emacs into a batch processor.
> > You can invoke commands and load lisp files for purely automated testing
> > without the -batch flag, and that is exactly what we are doing. I was
> > calling that batch mode, but now I don't know what to call it.
> >
> >
> > > > and that does allow me to do *some* things in the docker container, but
> > > > emacs seems to just exit when I start a `process`. The docs don't
> > > > mention this as a caveat http://www.emacswiki.org/emacs/BatchMode
> > >
> > > What do you mean by "start a process"?
> >
> > I mean start a
> > http://www.gnu.org/software/emacs/manual/html_node/elisp/Processes.html
> >
> > > > Is there anything that you can think of that might cause a -batch emacs
> > > > to exit early?
> > >
> > > How do you see it exiting early? Please provide the details of what
> > > you see, as I have no way of trying this on a system similar to yours.
> >
> > Well, this is literally all the information I have: the stdout
> >
> > http://fommil.com/github.com/ensime/ensime-emacs/drone/ee99fc5d368cafc2dd583520f9fe8e9e23faadb6
> >
> > from running this script
> >
> > https://github.com/fommil/ensime-emacs/blob/drone/test/run_emacs_tests.sh
> >
> > The last thing we see is the output from this function call (which starts
> > the process)
> > https://github.com/fommil/ensime-emacs/blob/drone/ensime-startup.el#L215
> >
> > So I'm interested to know what implication the -batch flag has for the
> > functionality of emacs. Specifically: launching/monitoring processes, and
> > navigating buffers (i.e. spoofing user actions).
> >
> > Best regards,
> > Sam
- Re: run emacs in batch mode without a tty, (continued)
- Message not available
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/03
- Message not available
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/03
- Message not available
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty,
Sam Halliday <=
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/04
- Re: run emacs in batch mode without a tty, Barry Margolin, 2015/07/03
- Re: run emacs in batch mode without a tty, Sam Halliday, 2015/07/03
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/04
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/04
- Re: run emacs in batch mode without a tty, Eli Zaretskii, 2015/07/04