Message-Id: <4B19119F.2040500@saic.com>
Date: Fri, 04 Dec 2009 08:41:51 -0500
From: "Roger K. Wells" <ROGER DOT K DOT WELLS AT saic DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Why does exiting bash window kill off  Gvim? (Windows version,  but X-would be same question)
References: <4B184E76 DOT 60909 AT tlinx DOT org>
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Linda Walsh wrote:
> In bash I start a copy of gvim.exe (64-bit windows version) in 
> background.
> I disown the job in bash so bash no longer manages the job -- it 
> should be
> a free and clear process (unaffected by bash exiting).
>
> Yet when I exit the bash window (bash running in a console window), Gvim
> is killed.  Why should bash or the console exiting kill off any processes
> running in the background?
>
I have had the same frustration for a while.  When in a bash shell start 
gvim with:
cmd /c gvim
then you can exit the bash shell without killing gvim.
FWIW:
I am using gvim v7.0 for 32bit MS-Windows
it is set up as a server by sourcing the following in .bash_profile:

function gvim
{
    if [ -z "$1" ] ; then
        $VIMRUNTIME/gvim.exe --servername GVIM &
    else
        $VIMRUNTIME/gvim.exe --servername GVIM --remote-silent $1 &
    fi
}

cheera,
roger wells
> It would be the same question of it was the win32-X based Gvim -- it 
> would
> be killed as well, but one could argue that cygwin has to shut down all
> cygwin processes when it exits -- but I still don't see that as being
> necessary.
>
> It's certainly not what happens when I log into a linux workstation and
> bring up Gvim displaying locally (an X version, not a Windows
> version...:-)).  I can terminate the tty window to a linux box and the X
> program just keeps on running (unless I was running it's display 
> through a
> copy of SSH that terminates with the window's exit.  I try to avoid that
> on my local network.
>
> So why does cygwin have to terminate any processes when I exit the shell
> window?  If I've disowned the job, I obviously don't care about any 
> output
> -- I could use nohup in front of it, if I wanted to capture such, but it
> wouldn't matter, they all seem to be required to die, and I don't
> understand why.
>
> I find it ironic to think about the discussion about characters when
> something important like jobs running in background normally doesn't even
> work right, but I don't understand why it has to be that way. 
> I find it *especially* annoying, when it kills off a windows program --
> there can be no good reason for that.
>
> I guess I also don't quite get why I don't get back immediate control
> when I start gvim under bash.exe, but if I start cmd.exe within bash,
> then gvim behaves 'normally' (auto backgrounds and doesn't terminate
> when cygwin does).  So it's obvious that there's no reason, at least,
> why cygwin should "go out of its way" to kill off any launched
> processes.  Or does it not do that? 
>
> linda
>
>
> -- 
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>


-- 
Roger Wells, P.E.
SAIC
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roger DOT k DOT wells AT saic DOT com


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