IETF Logo Mail Archive

Re: [I18ndir] I-D on filesystem I18N

Nico Williams <nico@cryptonector.com> Thu, 09 July 2020 00:15 UTC

Return-Path: <nico@cryptonector.com>
X-Original-To: i18ndir@ietfa.amsl.com
Delivered-To: i18ndir@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 532393A0A14 for <i18ndir@ietfa.amsl.com>; Wed, 8 Jul 2020 17:15:34 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cryptonector.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YzobIahEAGUD for <i18ndir@ietfa.amsl.com>; Wed, 8 Jul 2020 17:15:33 -0700 (PDT)
Received: from cockroach.elm.relay.mailchannels.net (cockroach.elm.relay.mailchannels.net [23.83.212.37]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B43C13A0A0E for <i18ndir@ietf.org>; Wed, 8 Jul 2020 17:15:32 -0700 (PDT)
X-Sender-Id: dreamhost|x-authsender|nico@cryptonector.com
Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id A8A907E05E1; Thu, 9 Jul 2020 00:15:31 +0000 (UTC)
Received: from pdx1-sub0-mail-a38.g.dreamhost.com (100-96-22-21.trex.outbound.svc.cluster.local [100.96.22.21]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 0497C7E0DC4; Thu, 9 Jul 2020 00:15:31 +0000 (UTC)
X-Sender-Id: dreamhost|x-authsender|nico@cryptonector.com
Received: from pdx1-sub0-mail-a38.g.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384) by 0.0.0.0:2500 (trex/5.18.8); Thu, 09 Jul 2020 00:15:31 +0000
X-MC-Relay: Good
X-MailChannels-SenderId: dreamhost|x-authsender|nico@cryptonector.com
X-MailChannels-Auth-Id: dreamhost
X-Interest-Cold: 0926fb140e2bdd8e_1594253731472_776768327
X-MC-Loop-Signature: 1594253731472:2902949501
X-MC-Ingress-Time: 1594253731472
Received: from pdx1-sub0-mail-a38.g.dreamhost.com (localhost [127.0.0.1]) by pdx1-sub0-mail-a38.g.dreamhost.com (Postfix) with ESMTP id AE468B41C6; Wed, 8 Jul 2020 17:15:30 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=cryptonector.com; h=date :from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=cryptonector.com; bh=MIc9pwnUmP4lDI T9FvrbMhHlZdc=; b=fpJMfiWLwwX8cjRtpmYKdx9BXp7/3mT5Y143dNlxYW+Nfa +2yC79E9+F7xdColutl+n65WIwfx6kJfKrvc3tiB5bcK+sp2t0dWY+vZpgWpcZK3 MQSdjqMwxcxtvXG8NZOkbuJo2pA34kSXR/Ng2yEz3brQ7LMOI4ydBPhV2xlDc=
Received: from localhost (unknown [24.28.108.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: nico@cryptonector.com) by pdx1-sub0-mail-a38.g.dreamhost.com (Postfix) with ESMTPSA id 32B4DB41C1; Wed, 8 Jul 2020 17:15:28 -0700 (PDT)
Date: Wed, 8 Jul 2020 19:15:25 -0500
X-DH-BACKEND: pdx1-sub0-mail-a38
From: Nico Williams <nico@cryptonector.com>
To: John Levine <johnl@taugh.com>
Cc: i18ndir@ietf.org, john-ietf@jck.com
Message-ID: <20200709001523.GS3100@localhost>
References: <9044C737C36C0787B9EAE190@PSB> <20200708203811.6CE9D1C6D7BD@ary.qy> <20200708211825.GQ3100@localhost> <20200708220843.GR3100@localhost>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200708220843.GR3100@localhost>
User-Agent: Mutt/1.9.4 (2018-02-28)
X-VR-OUT-STATUS: OK
X-VR-OUT-SCORE: -100
X-VR-OUT-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduiedrudekgdefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucggtfgfnhhsuhgsshgtrhhisggvpdfftffgtefojffquffvnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpeffhffvuffkfhggtggujggfsehttdertddtredvnecuhfhrohhmpefpihgtohcuhghilhhlihgrmhhsuceonhhitghosegtrhihphhtohhnvggtthhorhdrtghomheqnecuggftrfgrthhtvghrnheptddvheeftefhgfdvhefgteefteegudeufffgheekuedtkefhveeuieegheevtefhnecuffhomhgrihhnpeifihhkihhpvgguihgrrdhorhhgnecukfhppedvgedrvdekrddutdekrddukeefnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmohguvgepshhmthhppdhhvghloheplhhotggrlhhhohhsthdpihhnvghtpedvgedrvdekrddutdekrddukeefpdhrvghtuhhrnhdqphgrthhhpefpihgtohcuhghilhhlihgrmhhsuceonhhitghosegtrhihphhtohhnvggtthhorhdrtghomheqpdhmrghilhhfrhhomhepnhhitghosegtrhihphhtohhnvggtthhorhdrtghomhdpnhhrtghpthhtohepnhhitghosegtrhihphhtohhnvggtthhorhdrtghomh
Archived-At: <https://mailarchive.ietf.org/arch/msg/i18ndir/OaDapVmSHDq8mKI3URJXQVS8Z0Q>
Subject: Re: [I18ndir] I-D on filesystem I18N
X-BeenThere: i18ndir@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Internationalization Directorate <i18ndir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/i18ndir>, <mailto:i18ndir-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/i18ndir/>
List-Post: <mailto:i18ndir@ietf.org>
List-Help: <mailto:i18ndir-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/i18ndir>, <mailto:i18ndir-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 09 Jul 2020 00:15:35 -0000

> (It'd be nice to have a survey of Unicode support in the various Linux
> and *BSD filesystems, like BTRFS, HAMMER, HAMMER2, etc.
> https://en.wikipedia.org/wiki/Comparison_of_file_systems does not
> mention this stuff.)

Well, I took a look at Linux.  f2fs and ext4 use utf8_strncasecmp() for
case-insensitivity, and IIUC utf8_strncasecmp() is also
form-insensitive (normalizing as needed as it goes).

There is also a utf8_strncmp() function that does case-sensitive but
form-insensitive comparison.  Nothing uses it.

It may be a relatively simple change to add an option for form-
insensitive, case-sensitive behavior in some Linux filesystems, though
in all cases how easy it might be will depend on how directory contents
are encoded.  Maybe we should file a bug about this.

Nico
--

v2.8.7 | Report a Bug | By Email