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Date:	Tue, 13 Aug 2002 10:15:25 -0400
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From:	Joe Buehler <jbuehler AT hekimian DOT com>
Reply-To:	joseph DOT buehler AT spirentcom DOT com
Organization:	Spirent Communications
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To:	Cygwin Developers <cygwin-developers AT cygwin DOT com>
Subject:	vfork / setsid interaction

One of the problems in the GNU emacs port was an interaction between
setsid() and vfork().

If I understand vfork() correctly, the pid does not change in the
child.  This causes setsid() to fail in the child if the parent is
a process group leader.  This was preventing emacs children from changing
their controlling tty.

I assume this is not "correct" behavior because this is the standard way
that emacs does things on other platforms.

Joe Buehler

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