multiple charsets handling in gnus

[Alexander Kotelnikov <sacha@softjoys.ru>]

Hello.

I have a problem with gnus: I am russian so I read mail in cyrillic.
Cyrillic has at least three wide(or not wide) spread charsets:
1. koi8-r (unix systems)
2. cp1251, or Windows-1251 (windows cyrillic)
3. iso-8859-5, not widly used, but ISO standard.

Most of mail I get is in koi8-r and I read it without any
troubles. But when I get a mail with
Content-Type: text/plain; charset=windows-1251
or
Content-Type: text/plain; charset=cp1251
I see undecoded subject, like =?windows-1251?B?4vLu8O7l?= and body.

As gnus info sais I have
(put-charset-property 'cyrillic-iso8859-5
		      'preferred-coding-system 'koi8-r)
and 

(codepage-setup 1251)
(define-coding-system-alias 'windows-1251 'cp1251)

set in my ~/.gnus.el

One more problem: people now write mail in utf-8 encoding, can it be
converted by gnus to me default, if emacs can't display unicode?

I use GNU Emacs 20.7.2 (i386-debian-linux-gnu, X toolkit) with more or
less up-to-date cvs gnus.

PS Cc: are welcome

-- 
Alexander Kotelnikov
Saint-Petersburg, Russia