bug#6691: 23.2; Eshell and ^M

[Eli Zaretskii]

> From: Leo <sdl.web@gmail.com>
> Date: Sat, 14 Apr 2012 15:48:32 +0800
> Cc: 6691@debbugs.gnu.org, John Wiegley <johnw@newartisans.com>,
>       Lars Magne Ingebrigtsen <larsi@gnus.org>
> 
> BTW, why process coding system for input and output are set to
> utf-8-unix?

I'm not entirely sure (my failing memory is ... well, failing), but I
think that's because guessing the EOL format in process output is
unreliable (due to partial reads) and can cause trouble.  Again, don't
take this for granted; perhaps someone else can confirm or refute.