Lars Ingebrigtsen <larsi@gnus.org> writes:

> They are, but the output in that buffer is just raw bytes -- no matter
> whether the output is from stderr or stdout.  There must be a decoding
> thing that takes place later, but I'm still looking for where that
> happens.  (I'm wholly unfamiliar with the ediff code.)

But it's not doing that -- it's loading the files into normal Emacs
buffers, so the normal Emacs autodetecting of coding systems takes
place.

Hm...  to me it looks like it never decodes the output from diff -- it
doesn't care what's on the lines, it just uses the diff codes.

Here's what the output buffer looks like: