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From: "Eli Zaretskii" <eliz@elta.co.il>
Newsgroups: gmane.emacs.devel
Subject: Re: Incomplete output from "cvs annotate"
Date: Mon, 19 Jan 2004 23:18:25 +0200
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> From: Simon Josefsson <jas@extundo.com>
> Date: Mon, 19 Jan 2004 15:59:45 +0100
> 
> If the data need to be collapsed into the same buffer, it should
> happen inside Emacs, not by cloning the fd.

You cannot DTRT to put data from different descriptors together
because you don't know their relative timing.  Causing them to be
written to the same descriptor emulates what happens in the
interactive case, when both stdout and stderr are connected to the
same device.