rmail and mime encoded patches annoyance

[Alfred M. Szmidt]

Hi,

Was working through a set of patches, and sorta got a bit fed up, more
often than not patches are sent as MIME attachment, and show up as:

[2:text/plain Show Save:patch-foo-bar-baz.lisp (6kB)]

in the RMAIL buffer.  But if you edit such a message
(rmail-edit-current-message); it is very cumbersome to edit it
attachments, since they will be in base64, and you need to decode
manually.  Plus, when viewing the message later .. it will no longer
be expanded.

Is there some way of "decoding the message" permantnetly into ASCII or
something, so that it now longer is MIME encoded?  So you get "What I
See Is What I Edit" behaviour..  This would then also be useful when
one replies to such messages with inline comments to a patch.

/Alfred