From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: Peter Stephenson <pws@ifh.de>,
zsh-workers@math.gatech.edu (Zsh hackers list)
Subject: Re: stopping "wait" in (sub)script ?
Date: Thu, 15 May 1997 03:52:39 -0700 [thread overview]
Message-ID: <970515035240.ZM381@candle.brasslantern.com> (raw)
In-Reply-To: <199705150908.LAA28604@hydra.ifh.de>
On May 15, 11:07am, Peter Stephenson wrote:
} Subject: Re: stopping "wait" in (sub)script ?
}
} > > > $ for i in `cat ss`
} >
} > OK, now I got it. The fix looks really simple, and I do hope that this is
} > really al that's needed.
}
} This doesn't seem to fix this particular bug here, it's still
} uninterruptible. On the other hand, replacing `cat ss` with $(<ss)
} has always worked. That doesn't leave much code in getoutput() to
} make the difference.
I think the problem must be in signal_suspend(). The only difference
between the two cases in getoutput() is that $(<ss) does an explicit
child_unblock(), whereas `cat ss` does it implicitly via child_suspend(0).
If you go look at signal_suspend(), you'll find a lot of #ifdefs for the
assorted signal handling variations. I'll bet this problem is specific
to one or more of those variations.
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.nbn.com/people/lantern
next prev parent reply other threads:[~1997-05-15 11:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <33797750.316A@ptc.com>
1997-05-14 9:00 ` Peter Stephenson
1997-05-15 7:27 ` Zoltan Hidvegi
1997-05-15 9:07 ` Peter Stephenson
1997-05-15 10:52 ` Bart Schaefer [this message]
1997-05-15 15:47 ` Zoltan Hidvegi
1997-05-16 7:11 ` Zoltan Hidvegi
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