Encodings in message (was: wikipedia and UTF8 coding (emacs21))

[Marc Girod <girod@shire.ntc.nokia.com>]

Hello,

I experience related but different problems.
In mails and news postings, which I process using Gnus, I tend to see
all the characters correctly (most of them anyway), but to send while
replying, what my correspondents see as garbage.

Indeed, looking at my messages with:

  (find-charset-region (point) (mark))

I often notice different charsets.

My question: how to force using only one (iso8859-1 -- forgetting the
few non supported characters)?
I currently know how to do it interactively, with query-replace, but
fail to do it programmatically.

I cannot use subst-char-in-region, since eight-bit graphic character
have not the same size as iso ones, and using search-forward and
replace-match, the syntax to pas the characters escapes me... I
believe this is precisely for UTF8 encoded chars, although... I have
no example at hand to check.

-- 
Marc Girod        P.O. Box 370        Voice:  +358-71 80 25581
Nokia BI          00045 NOKIA Group   Mobile: +358-50 38 78415
Kara RD B 480.2   Finland             Fax:    +358-71 80 64474