From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#40407: [PATCH] slow ENCODE_FILE and DECODE_FILE Date: Mon, 06 Apr 2020 19:33:16 +0300 Message-ID: <83zhbor2ur.fsf@gnu.org> References: <805F9723-8298-4FD7-A47B-1E683721A5B0@acm.org> <835zegwn9y.fsf@gnu.org> <87blo46i1j.fsf@mail.parknet.co.jp> <835zecsnip.fsf@gnu.org> <5D4B264A-C43B-4CEE-91DE-760AEBE80671@acm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="64718"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 40407@debbugs.gnu.org, hirofumi@mail.parknet.co.jp To: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Apr 06 18:34:16 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jLUhT-000GjE-U2 for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 06 Apr 2020 18:34:15 +0200 Original-Received: from localhost ([::1]:35016 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLUhS-00018K-Qt for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 06 Apr 2020 12:34:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52198) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLUhK-00015B-5M for bug-gnu-emacs@gnu.org; Mon, 06 Apr 2020 12:34:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jLUhJ-0002KR-6N for bug-gnu-emacs@gnu.org; Mon, 06 Apr 2020 12:34:06 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:37594) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jLUhJ-0002KL-3O for bug-gnu-emacs@gnu.org; Mon, 06 Apr 2020 12:34:05 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jLUhG-0007ua-49 for bug-gnu-emacs@gnu.org; Mon, 06 Apr 2020 12:34:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 06 Apr 2020 16:34:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 40407 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 40407-submit@debbugs.gnu.org id=B40407.158619081130310 (code B ref 40407); Mon, 06 Apr 2020 16:34:02 +0000 Original-Received: (at 40407) by debbugs.gnu.org; 6 Apr 2020 16:33:31 +0000 Original-Received: from localhost ([127.0.0.1]:49140 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jLUgl-0007sn-8x for submit@debbugs.gnu.org; Mon, 06 Apr 2020 12:33:31 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:37007) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jLUgj-0007sL-Bf for 40407@debbugs.gnu.org; Mon, 06 Apr 2020 12:33:30 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:34634) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jLUgd-00020y-Ej; Mon, 06 Apr 2020 12:33:23 -0400 Original-Received: from [176.228.60.248] (port=3364 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jLUgc-0002TG-9U; Mon, 06 Apr 2020 12:33:22 -0400 In-Reply-To: <5D4B264A-C43B-4CEE-91DE-760AEBE80671@acm.org> (message from Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= on Mon, 6 Apr 2020 17:56:27 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:178091 Archived-At: > From: Mattias Engdegård > Date: Mon, 6 Apr 2020 17:56:27 +0200 > Cc: OGAWA Hirofumi , > Kenichi Handa , 40407@debbugs.gnu.org > > > Kenichi, why was coding-type of UTF-7 systems set to 'utf-8'? > > Wouldn't it be better to set it to 'utf-16'? Or is there some > > subtlety here that we should be aware of? Do you have any comments on > > the patch below? > > There is no reason why utf-7[-imap] should have utf-8 as coding-type, is there? I think it might be just some convenience thing: utf-7 and utf-8 have something in common that made it convenient to treat them the same in the internal routines. Or maybe it's just an accident. > utf-16 is definitely wrong (utf-7* are encoded in ASCII). Why do you think the ASCII encoding contradicts the utf-16 coding-type? > What about the patch below instead? I don't think 'charset' is the right type for this encoding (any reason why you've chosen it?), but I will let Handa-san comment. Defining coding-systems is a black art which I don't think I ever mastered.