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

[Eli Zaretskii]

> From: Jameson Graef Rollins <jrollins@finestructure.net>
> Date: Thu, 07 Feb 2013 14:47:40 -0800
> Cc: 7842@debbugs.gnu.org
> 
> Yes, but that requires writing to a temporary file.  Avoiding that was
> the entire point of my feature request.

Why do you want to avoid it?  What is the problem with using this
method?

> Is there some technical reason that it's impossible to just capture
> the stderr to a separate buffer?

It's possible, but it will complicate the API which is already quite
complicated and hard to maintain for every platform Emacs supports.