bug#7842: acknowledged by developer (control message for bug 7842)

[Stefan Monnier]

>      It is impossible to separate the standard output and standard error
>   streams of the subprocess, because Emacs normally spawns the subprocess
>   inside a pseudo-TTY, and a pseudo-TTY has only one output channel.

Eli, you're confusing things.  We're talking about call-process here,
which uses no tty and already separates stdout from stderr.

There's nothing unreasonable in requesting the ability to put
call-process's stderr output inside a buffer.  We could easily do that
with a simple Elisp wrapper (which uses a make-temp-file internally).
I don't know how hard it would be to do it right, OTOH, but I think it
would be good to do it.


        Stefan