Re: Manual hunk edit mode + emacs + ^G == garbage

From: Kevin Ballard <kevin@sb.org>
Date: Oct 13, 2010, 22:49 UTC
Message-ID: <54F2B62F-E768-49D8-96CB-780DA3ECBF0E@sb.org>
In-Reply-To: <m27hhld8d9.fsf@igel.home>

On Oct 13, 2010, at 3:40 PM, Andreas Schwab wrote:

Show 8 quoted lines

> Kevin Ballard <kevin@sb.org> writes:
> 
>> I've been investigating this on the emacs side as well. At the moment, my suspicion is that ^G causes emacs to trigger (keyboard-quit), but at the same time the surrounding environment (e.g. git) is sending a SIGINT to emacs, which normally acts like ^G but in this case may be triggering the emergency exit mode of emacs. Is there some reason that the interactive add would be sending SIGINT to emacs when I type ^G?
> 
> If you are using text mode (-nw) then Emacs redefines the INTR character
> of the terminal to ^G.  On the other hand it should also put itself into
> its own process group, so the parent should not receive the terminal
> signals.  And this is what happens here when I try it.

I am indeed using text mode. And when I test, invoking `emacs` directly gives it its on process group, but invoking emacs from `git add -p`+e doesn't.

kevin@Brandybuck:~> ps -jp 34581 34540 USER PID PPID PGID SESS JOBC STAT TT TIME COMMAND kevin 34540 34539 34538 7d29d68 1 S+ s001 0:00.08 /usr/bin/perl /usr/local/libexec/git-core/git-add--interactive -- kevin 34581 34540 34538 7d29d68 1 S+ s001 0:00.61 /usr/bin/emacs /Users/kevin/Dev/Work/Standard9/inkling-ipad/.git/

Any idea why this would be?

-Kevin Ballard