[plt-scheme] Interacting w/ MzScheme

    Just to chime in, I do most of my scheme hacking with mzscheme run
from emacs (I've done eating related tasks using my emacs).  I'll
start up drscheme from time to time if I want something it does better
(e.g. show me execution coverage when running test code), but I find
it distasteful -- it's not my emacs and isn't going to be my emacs
without a lot more work.

    I've never bothered to hack up a transparent repl-alike, and will
ocasionally get myself in trouble if I forget to eval an edit, but
"eh".

    As it is, I don't do a lot of gui hacking, so I haven't had to
worry about the lack of the bigger image support from mzscheme proper.

    Try C-u M-x run-scheme and feed it "mred -z" as your scheme
intepreter.  This should *probably* fit within the standard inferior
scheme mode for emacs, but I haven't tried beating on it very hard.