Re: Rmail changes for Emacs 22

[Richard Stallman]

    (1) Divide the current code into BABYL format handler
        (babyl-backend) and rmail user-interface provider
        (rmail-frontend).

This plan is not inherently flawed, but it would be a lot of work.

Our actual plan is both simpler and better: to get rid of Babyl format
entirely.  Paul has already rewritten Rmail to work on mbox format.
There is no need to keep Babyl format, and using mbox format will be
more convenient all around.

      Rmail-frontend displays a
        message in a different buffer (rmail-view-buffer) than
        the original mail file buffer.

That would be inconvenient for editing the message
and several other things.  I think that having
two separate buffers is something to avoid.