handling text/plain based on extension of the file

[Carlos Puchol]

hi,

i was wondering how to do the following (if possible).

i reveive ".mgp" files as text/plain attachments, because
most people don't know about magicpoint (a little known
but awesome presentation software), thus they don't have a
mailcap entry of "application/magicpoint; mgp %s" and
a mime entry of "application/magicpoint mgp".

is it possible for me to instruct mutt to invoke mgp
for those attachments that come as text/plan but the
extension of the attachment is .mgp?

i have dabbled around the manual a bit, but i am not
too experienced with muttrc settings.

thanks,

++ carlos