bug#7651: 23.2.91; Rmail doesn't allow displaying text attachments conveniently

[Eli Zaretskii]

> From: Kenichi Handa <handa@m17n.org>
> Cc: eliz@gnu.org, 7651@debbugs.gnu.org
> Date: Tue, 04 Jan 2011 14:36:43 +0900
> 
> And, this is not accurate.
> 
> @findex rmail-mime-next-item
> @item @key{TAB}
> Move point to the next @acronym{MIME} part
> (@code{rmail-mime-next-item}).

Looks like Chong expected the same as I did ;-)