Chester,
You could you clarify/help, please ?
On Wed, Oct 17, 2012 at 11:13 AM, Francis Moreau wrote:
> On Tue, Oct 16, 2012 at 10:00 PM, Bob Proulx wrote:
>> Francis Moreau wrote:
>>> --
>>> main_cleanup () { echo main cleanup; }
>>> submain_cleanup () { echo sub cleanup; }
>>>
>>> trap main_cleanup EXIT
>>>
>>> task_in_background () {
>>> echo "subshell $BASHPID"
>>>
>>> while :; do
>>> # echo "FOO"
>>> sleep 1
>>> done
>>> echo "subshell exiting..."
>>> }
>>>
>>> {
>>> trap submain_cleanup EXIT
>>> trap
>>> task_in_background
>>> } &
>>>
>>> echo exiting...
>>> --
>>>
>>> Sending TERM signal to the subshell doesn't make "submain_cleanup()"
>>> to be called.
>>
>> And it does in ksh93. Hmm... And it does if I comment out the line
>> "trap main_cleanup EXIT". It seems to only set the trap if no trap
>> handler was previously set.
>
> Yes that's right.
>
> Even weirder: if the subshell exits by calling "exit 1", then the trap
> handler is not called at all regardless of whether or not the "trap
> main_cleanup EXIT" is commented you.
>
> To make that case work, you need to use the "( ... ) &" construct
> instead of "{ ... } &" one.
>
> This is why I was asking for clarification :)
> --
> Francis
--
Francis
