From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: Bug in sh emulation
Date: Sun, 11 Dec 2011 15:39:18 -0800 [thread overview]
Message-ID: <111211153918.ZM32739@torch.brasslantern.com> (raw)
In-Reply-To: <20111211205658.365243c7@pws-pc.ntlworld.com>
On Dec 11, 8:56pm, Peter Stephenson wrote:
}
} What should happen:
}
} - Fork for subshell as before
}
} - attachtty() as before
}
} - Shell keeps ignoring SIGTTOU because...
}
} - MONITOR is left on for POSIXJOBs as this is a (...) subshell in the
} foreground.
}
} - Fork for pipeline
}
} - attachtty() works because SIGTTOU is still ignored
I think there's a flaw here: attachtty() doesn't *work*, in that it
won't actually associate the new process group with the TTY. Instead
it just won't result in an infinite loop.
} - Now stop ignoring SIGTTOU because the pipeline element is not a (...)
} subshell, it's some random command
}
} - MONITOR is turned off for the same reason.
I think this will happen as a side-effect of attachtty() failing to do
any other useful work. Does it not print the "can't set tty pgrp"
error?
next prev parent reply other threads:[~2011-12-11 23:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-10 1:39 Ivan S. Freitas
2011-12-10 2:47 ` Bart Schaefer
2011-12-10 3:40 ` Bart Schaefer
2011-12-10 18:15 ` Peter Stephenson
2011-12-10 19:40 ` Peter Stephenson
2011-12-10 23:28 ` Peter Stephenson
2011-12-11 19:39 ` Peter Stephenson
2011-12-11 20:20 ` Peter Stephenson
2011-12-11 20:56 ` Peter Stephenson
2011-12-11 23:39 ` Bart Schaefer [this message]
2011-12-12 10:01 ` Peter Stephenson
2011-12-12 10:14 ` Peter Stephenson
2011-12-12 15:44 ` Bart Schaefer
2011-12-12 16:06 ` Peter Stephenson
2011-12-12 18:10 ` Bart Schaefer
2011-12-12 19:16 ` Peter Stephenson
2011-12-11 22:37 ` Bart Schaefer
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