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bug#11886: 24.1; Ctrl-G in an emacs running in a terminal sends a SIGINT


From: Vincent Lefevre
Subject: bug#11886: 24.1; Ctrl-G in an emacs running in a terminal sends a SIGINT to the parent shell
Date: Tue, 7 Aug 2012 16:05:07 +0200
User-agent: Mutt/1.5.21-6215-vl-r53514 (2012-07-22)

I've reported the problem in the Debian BTS for dash:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683671

Now I remember that the problem is described on:

  http://www.cons.org/cracauer/sigint.html

And contrary to what I've said, zsh is also buggy, but only in the
case where the command is *not* the last one (I suppose that this
difference is because zsh does an exec for the last command, when
possible).

On 2012-07-10 08:52:38 +0200, Andreas Schwab wrote:
> Vincent Lefevre <address@hidden> writes:
> 
> > It seems that the condition is that the command traps the signal.
> 
> Of course.  A command that exits on C-c exits on C-c.

Actually, no. This was my test that was buggy:

ypig:~> cat trap.sh
#!/bin/bash

trap 'kill -INT $$' INT
sleep 3
ypig:~> zsh -c trap.sh; echo foo
^Czsh: exit 130   zsh -c trap.sh
foo

A correct test, with

  trap 'trap - INT; kill -INT $$' INT

shows that "foo" is not output, as expected.

-- 
Vincent Lefèvre <address@hidden> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)





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