From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/30536 Path: main.gmane.org!not-for-mail From: Florian Weimer Newsgroups: gmane.emacs.gnus.general Subject: Re: Problems with 8-bit headers Date: 30 Apr 2000 20:21:36 +0200 Sender: owner-ding@hpc.uh.edu Message-ID: <87k8hfih5b.fsf@deneb.cygnus.argh.org> References: <87og74hth9.fsf@deneb.cygnus.argh.org> NNTP-Posting-Host: coloc-standby.netfonds.no Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: main.gmane.org 1035167058 9014 80.91.224.250 (21 Oct 2002 02:24:18 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 21 Oct 2002 02:24:18 +0000 (UTC) Return-Path: Original-Received: from lisa.math.uh.edu (lisa.math.uh.edu [129.7.128.49]) by mailhost.sclp.com (Postfix) with ESMTP id CDE4DD051E for ; Sun, 30 Apr 2000 14:28:48 -0400 (EDT) Original-Received: from sina.hpc.uh.edu (lists@Sina.HPC.UH.EDU [129.7.3.5]) by lisa.math.uh.edu (8.9.1/8.9.1) with ESMTP id NAB24432; Sun, 30 Apr 2000 13:28:45 -0500 (CDT) Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Sun, 30 Apr 2000 13:27:57 -0500 (CDT) Original-Received: from mailhost.sclp.com (postfix@sclp3.sclp.com [204.252.123.139]) by sina.hpc.uh.edu (8.9.3/8.9.3) with ESMTP id NAA23254 for ; Sun, 30 Apr 2000 13:27:44 -0500 (CDT) Original-Received: from mail.netic.de (mail.s.netic.de [212.9.160.11]) by mailhost.sclp.com (Postfix) with ESMTP id 5359FD051E for ; Sun, 30 Apr 2000 14:26:40 -0400 (EDT) Original-Received: by mail.netic.de (Smail3.2.0.106/mail.s.netic.de) via LF.net GmbH Internet Services via remoteip 212.9.163.232 via remotehost cygnus.argh.org with esmtp for mailhost.sclp.com id m12lyQR-001X3OC; Sun, 30 Apr 2000 20:26:39 +0200 (CEST) Original-Received: from deneb.cygnus.argh.org ([192.168.1.2] ident=exim) by cygnus.argh.org with esmtp (Exim 3.12 #1) id 12lyPh-00009a-00 for ding@gnus.org; Sun, 30 Apr 2000 20:25:53 +0200 Original-Received: from fw by deneb.cygnus.argh.org with local (Exim 3.12 #1) id 12lyLZ-0007WI-00 for ding@gnus.org; Sun, 30 Apr 2000 20:21:37 +0200 Original-To: ding@gnus.org In-Reply-To: Vladimir Volovich's message of "24 Apr 2000 22:20:12 +0400" Original-Lines: 25 User-Agent: Gnus/5.0805 (Gnus v5.8.5) Emacs/20.6 Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:30536 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:30536 Vladimir Volovich writes: > * possibility to auto-select the charset for 8-bit chars in headers > depending on the charset used for the message body Yes, I agree that's a nice feature. ;) > * possibility to set up preferred charsets to encode message bodies on > a per-group basis. > * possibility to specify that the preferred charset to encode a > message body should be the same as the charset used to encode the > message (or mime part) i'm replying to. Currently, these two features are very hard to implement, at least in the general case, because Emacs unifies only ASCII characters in different MULE charsets. For example, an ISO-8859-1 "=E4" and one in ISO-8859-2 are completely different characters from Emacs' view. As a result, it is impossible to decide whether the preferred MIME charset can be used---without additional mapping tables. On the other hand, such tables do exist for almost all charsets used on the world. They are known as Unicode. ;) IMHO, these features have to wait until Emacs switches to Unicode for internal character representation.