From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0DCCC433ED for ; Tue, 11 May 2021 09:20:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7481C61927 for ; Tue, 11 May 2021 09:20:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231266AbhEKJVF (ORCPT ); Tue, 11 May 2021 05:21:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230427AbhEKJVF (ORCPT ); Tue, 11 May 2021 05:21:05 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDB72C061574; Tue, 11 May 2021 02:19:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=ACPeVbxMLK/500nyNX+3cNB0vDYCp3xwSEtXta/r6nQ=; b=NHcoPsQ0w6LxwSGDX4vkD8/uH2 BCVsY+btpGQEpRU2pkeJvdatTbWL2JBZdS/6eYYr55aUZnHPQiCp75ufbj9ppcYdJPuE3i2U7VWZ9 zG31a+HLtyhcbBbak7g0IGwtZL3WndWRDY5ftVPK/Ew6z486lFPq6TKqJB2Kwe6HEbOfszw1/iK15 GEbbAqCaMQ0Gdtol1f4uGTL+OL/5HeAxBtfOoAh/qfcZv7XKSbapukqj85NpJayiS/n/AmrD5oz/9 KkvoamnHrJmQBHLb76SWFRywxNh2WhOmHnywdrZ2rawGhXo2ctAgb6hPkv/uLE3qCyIBeWemyCgKm gRNFtW/g==; Received: from 54-240-197-235.amazon.com ([54.240.197.235] helo=u3832b3a9db3152.ant.amazon.com) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lgOYO-009QMP-9D; Tue, 11 May 2021 09:19:48 +0000 Message-ID: <899f0da2727a131c3216ad0e03e9380b33b2d4ad.camel@infradead.org> Subject: Re: [PATCH 00/53] Get rid of UTF-8 chars that can be mapped as ASCII From: David Woodhouse To: Mauro Carvalho Chehab , Edward Cree Cc: Matthew Wilcox , Linux Doc Mailing List , linux-kernel@vger.kernel.org, Jonathan Corbet , alsa-devel@alsa-project.org, coresight@lists.linaro.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-wired-lan@lists.osuosl.org, keyrings@vger.kernel.org, kvm@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-edac@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fpga@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, linux-integrity@vger.kernel.org, linux-media@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, linux-rdma@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sgx@vger.kernel.org, linux-usb@vger.kernel.org, mjpeg-users@lists.sourceforge.net, netdev@vger.kernel.org, rcu@vger.kernel.org, x86@kernel.org Date: Tue, 11 May 2021 10:19:40 +0100 In-Reply-To: <20210511110002.2f187f01@coco.lan> References: <2ae366fdff4bd5910a2270823e8da70521c859af.camel@infradead.org> <20210510135518.305cc03d@coco.lan> <20210511110002.2f187f01@coco.lan> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-ksJlzBMaAXAvWpVBCnQ9" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org --=-ksJlzBMaAXAvWpVBCnQ9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2021-05-11 at 11:00 +0200, Mauro Carvalho Chehab wrote: > Yet, this series has two positive side effects: >=20 > - it helps people needing to touch the documents using non-utf8 locales[= 1]; > - it makes easier to grep for a text; >=20 > [1] There are still some widely used distros nowadays (LTS ones?) that > don't set UTF-8 as default. Last time I installed a Debian machine > I had to explicitly set UTF-8 charset after install as the default > were using ASCII encoding (can't remember if it was Debian 10 or an > older version). This whole line of thinking is fundamentally wrong. A given set of characters in a "text file" are encoded with a specific character set / encoding. To interpret that file and convert the bytes back to characters, we need to use the *same* charset. That charset is a property of the text file, and each text file or piece of text in a system (like this email, which will contain a Content-Type: header indicating the charset) might be encoded with a *different* character set. In the days before you could connect computers together =E2=80=94 or before= you could exchange data between computers in different countries, at least =E2=80=94 perhaps it made sense to store 'text' files without explicitly no= ting their encoding. And to interpret them using some kind of "default" character set. Those days are long gone. You're trying to work around an egregiously stupid bug, if you're trying to pander to "default" encodings. There *is* no default encoding that even makes sense, except perhaps UTF-8. To *speak* of them as you did shows a misunderstanding of how broken they are. It's *precisely* that kind of half-baked thinking which always used to lead to stupid assumptions and double conversions and Mojibake. Before we just standardised on UTF-8 everywhere and it stopped mattering so much. Just don't. Now, you *can* make this work if you really insist on it, even for systems with EBCDIC as their default encoding. Just make git do the "convert to local charset" on checkout, precisely the same way as it does CRLF for Windows systems. But it's stupid and anachronistic, so I don't really see the point. --=-ksJlzBMaAXAvWpVBCnQ9 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCECow ggUcMIIEBKADAgECAhEA4rtJSHkq7AnpxKUY8ZlYZjANBgkqhkiG9w0BAQsFADCBlzELMAkGA1UE BhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgG A1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1dGhl bnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTkwMTAyMDAwMDAwWhcNMjIwMTAxMjM1 OTU5WjAkMSIwIAYJKoZIhvcNAQkBFhNkd213MkBpbmZyYWRlYWQub3JnMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAsv3wObLTCbUA7GJqKj9vHGf+Fa+tpkO+ZRVve9EpNsMsfXhvFpb8 RgL8vD+L133wK6csYoDU7zKiAo92FMUWaY1Hy6HqvVr9oevfTV3xhB5rQO1RHJoAfkvhy+wpjo7Q cXuzkOpibq2YurVStHAiGqAOMGMXhcVGqPuGhcVcVzVUjsvEzAV9Po9K2rpZ52FE4rDkpDK1pBK+ 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