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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Wed, 22 Oct 2014 08:48:21 -0700
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Comments: In reply to Tim Speetjens <tim.speetjens@gmail.com>
 "Re: bug in zsh wait builtin - rhbz#1150541" (Oct 22, 10:42am)
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To: zsh-workers@zsh.org, zsh-workers@zsh.org
Subject: Re: bug in zsh wait builtin - rhbz#1150541
Cc: Tim Speetjens <tim.speetjens@gmail.com>
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On Oct 22, 10:42am, Tim Speetjens wrote:
}
} Are there any plans, to make zsh behave more like other shells, with
} regard to this? Both bash and mksh do what one would expect: propagate
} the return code, even if the job finished meanwhile.

I would say there are "intentions" rather than "plans".  There must be
something there already for { setopt POSIX_JOBS; foo & wait $! } so it
may be possible to generalize.

I'm still curious about PID rollover and whether "kill $!" is supposed
to avoid signalling the wrong job.