>>>>> In <2890h8msgn.fsf@kchisa.ga.sony.co.jp> 
>>>>>	yamaoka@jpl.org (Katsumi Yamaoka) wrote:

KY> This is another patch for the problem. How's it?

KY> --- message.el~	Wed Nov 18 10:20:17 1998
KY> +++ message.el	Thu Nov 19 09:22:10 1998

Sorry, it does not work for multipart message. The fixed one follows.