Re: XEmacs, Gnus and mm-coding-system priorities.

[Katsumi Yamaoka <yamaoka@jpl.org>]

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It is strange that Aidan Kehoe's message replying to me and the
ding list didn't appear in the list again.  Here it is:


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From: Aidan Kehoe <kehoea@parhasard.net>
To: Katsumi Yamaoka <yamaoka@jpl.org>
Cc: ding@gnus.org
Subject: Re: XEmacs, Gnus and mm-coding-system priorities.
Date: Mon, 6 Dec 2004 13:35:46 +0000
Message-ID: <16820.24626.23607.206081.dm0@vm.parhasard.net>

 Ar an séiú lá de mí na Nollaig, scríobh Katsumi Yamaoka: 

 > [...] I tried your patch with the old mm-util.el and confirmed it works.
 > However, it doesn't work with non-Latin characters:
 > 
 > (let ((mm-coding-system-priorities '(shift_jis)))
 >   (rfc2047-encode-string (string (make-char 'japanese-jisx0208 38 66))))
 > 
 > It returns "=?shift_jis?Q?=83=C0?=" for Emacs, but
 > "=?iso-2022-jp?B?GyRCJkIbKEI=?=" for XEmacs.

Yes, that does make sense, because Latin Unity doesn’t yet work with
non-ISO, non-Unicode character sets. (If it ever will.)

Right, given that, the patch can’t solve the general case. You should
probably leave it out of the trunk until Latin Unity gets support for the
East Asian character sets, if it ever does. (And it might need a name change
at that point :-) Shame, because it did eliminate the most annoying thing I
find about Gnus on Mule; I _never_ want to send messages as iso-2022-jp, nor
as multipart messages split by character set.  

 > Although the default order of `mm-mime-mule-charset-alist' is just
 > suitable for Japanese messages and we don't need to modify
 > `mm-coding-system-priorities' in Japan, we will need to much improve it.
 > I will study your patch and look for the way to incorporate the
 > latin-unity feature in the latest mm-util.el.

Okay. Note that in Western Europe, the right thing to do is probably to send
a message in iso-8859-1 if its contents fit into that character set,
iso-8859-15 if it has the Euro sign, and UTF-8 if it has anything more
obscure than that. The current behaviour doesn’t really allow us to tell
Gnus that in XEmacs. 

-- 
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