Re: SIGINT handling

[Chet Ramey]

On 9/18/15 11:14 AM, Stephane Chazelas wrote:
> Hello.
> 
> In:
> 
> bash -c 'sh -c "trap exit INT; sleep 10; :"; echo hi'
> 
> If I press Ctrl-C, I still see "hi".
> 
> On Solaris with 4.1.11(2)-release (i386-pc-solaris2.11), that
> seems to be consistent.
> 
> On Debian with 4.3.42(1)-release (x86_64-pc-linux-gnu), that
> seems to happen only in something like 80% of the time.
> 
> For bash to exit upon receiving that SIGINT, the currently
> running process has to die itself as well of SIGINT (or the
> currently running command to be builtin).
> 
> That sounds like a bad idea, especially considering that it
> doesn't exit either if the process returns with exit code 130
> upon receiving that SIGINT. For instance:
> 
> For instance, in:
> 
> bash -c 'mksh -c "sleep 10; :"; echo hi'
> 
> Upon pressing Ctrl-C, mksh handles the SIGINT and exits with
> 130 (as opposed to dying of a SIGINT), so bash doesn't exit
> (sometimes only on Debian).

I'm surprised you've managed to avoid the dozen or so discussions on the
topic.

http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00108.html

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/