Re: wait with trap SIGCHLD: different behaviour in 3.2 and 4.0

[Alex Efros]

Hi!

On Sun, Sep 27, 2009 at 11:06:43PM -0400, Chet Ramey wrote:
> > Description:
> >         Looks like 'wait' command in bash-4 is broken: if used together
> >         with 'trap myhandler SIGCHLD' the 'wait' (without params) exit
> >         just after receiving first child exit, instead of waiting for all
> >         childs exit.
> Posix requires this behavior.
> 
> "When the shell is waiting, by means of the wait utility, for asynchronous
> commands to complete, the reception of a signal for which a trap has been
> set shall cause the wait utility to return immediately with an exit status
> >128, immediately after which the trap associated with that signal shall be
> taken."
> 
> This was reported as a bug against bash-3.2.

Cool. Is there any hint/doc/faq/how-to implement old behaviour, i.e. wait
until all children of current bash process will exit?


P.S. I've not seen this information in 'help wait' or 'man bash' - is this
current 'correct' behaviour is documented?

-- 
                        WBR, Alex.