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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: `message' not outputting the newline "atomically"
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To: Paul Eggert <eggert@cs.ucla.edu>
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In-reply-to: <5a3dfa65-a394-19d5-54a1-4a8bd63693e6@cs.ucla.edu> (message from
 Paul Eggert on Sat, 22 Jun 2019 11:53:36 -0700)
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> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Sat, 22 Jun 2019 11:53:36 -0700
> Cc: Eli Zaretskii <eliz@gnu.org>, larsi@gnus.org, emacs-devel@gnu.org
> 
> Andreas Schwab wrote:
> > On Jun 21 2019, Paul Eggert <eggert@cs.ucla.edu> wrote:
> > 
> >> it'll mess up formatting for the next stderr diagnostic, and (c) POSIX
> >> allows platforms to line-buffer stderr by default and Emacs has been
> >> working on such platforms for ages anyway.
> > 
> > How do you know?
> 
> Trivially, by using a recent Emacs master on GNU/Linux, as this uses 
> line-buffered stderr. It works fine.

That's not "for ages", though, is it?