Re: master 2c79a8f 2/2: Use posix_spawn if possible.

[Eli Zaretskii <eliz@gnu.org>]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Wed, 10 Nov 2021 13:42:07 +0100
> Cc: Alan Third <alan@idiocy.org>, YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>, 
> 	Emacs developers <emacs-devel@gnu.org>
> 
> > > I am concerned that there could be hidden issues with the branch since
> > > it doesn't seem to have had much testing, so it's probably best going
> > > into master, but I expect we'll see an increasing number of complaints
> > > about performance as more people switch to macOS 12. Perhaps we should
> > > keep it in mind as a possible update for 28.2, whenever that may be.
> >
> > It is fine with me to merge this to master, as a macOS-only feature,
> > unless Philipp has reasons not to do that yet.  We can reconsider
> > backporting to emacs-28 at a later date, if and when we get enough
> > complaints.
> 
> Is there a specific reason why we'd want to restrict this to macOS on
> master? If the concern is lack of test coverage, then using the branch
> on as many OSes as possible would help address that.

Since you didn't ask to merge it when I was asked about this, I
presumed that the branch was not yet ready for prime time, from your
POV.  On macOS this seems to be urgent due to incompatible changes by
Apple, but other platforms don't have much to gain, which is why I
answered as I did.