Re: [Slim] Moving forward on draft-ietf-slim-negotiating-human-language

Martin J. Dürst <duerst@it.aoyama.ac.jp> Wed, 22 November 2017 05:48 UTC

Return-Path: <duerst@it.aoyama.ac.jp>
X-Original-To: slim@ietfa.amsl.com
Delivered-To: slim@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D6C3112EABD for <slim@ietfa.amsl.com>; Tue, 21 Nov 2017 21:48:39 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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=itaoyama.onmicrosoft.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 5XUDoeB1r4-X for <slim@ietfa.amsl.com>; Tue, 21 Nov 2017 21:48:37 -0800 (PST)
Received: from JPN01-OS2-obe.outbound.protection.outlook.com (mail-os2jpn01on0114.outbound.protection.outlook.com [104.47.92.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BBEAD12EAB8 for <slim@ietf.org>; Tue, 21 Nov 2017 21:48:36 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=itaoyama.onmicrosoft.com; s=selector1-it-aoyama-ac-jp; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=k/RBoHG9Yuf3g9yw24y7+6hBr4RdfTh2WyDFIRC70hY=; b=E8HmnrA+szFyMIfVdG7Oqo96qKjoumfUOZziyAiFj7BCMW2LM/mYMMbIpEd4F7VfbJjJN6MU22rgj5Bnwv/EhPfUYZpgoXnzHrLQQkmZ5yLSz6MCPrTiGwam9tWVsG9lJpkPdnsu1Qp0VBD39dgUFj1FglSX3hmmPuRl9TxxuQc=
Received: from [133.2.210.64] (133.2.210.64) by TY1PR01MB0254.jpnprd01.prod.outlook.com (10.161.135.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.239.5; Wed, 22 Nov 2017 05:48:33 +0000
To: =?UTF-8?Q?Gunnar_Hellstr=c3=b6m?= <gunnar.hellstrom@omnitor.se>, Bernard Aboba <bernard.aboba@gmail.com>
Cc: slim@ietf.org, Randall Gellens <rg+ietf@randy.pensive.org>
References: <CAOW+2dsZtuciPiKMfif=ZmUqBcUd9TyYtL5gPYDp7ZfLOHHDBA@mail.gmail.com> <p06240600d637c6f98ecc@99.111.97.136> <CAOW+2dv5NSiCbW=p1exvPV=PF8YCVdiz2gi-OCxmaUB-jGe22w@mail.gmail.com> <p06240600d6389cd2043f@99.111.97.136> <97d9a6b8-de3b-9f79-483b-18376fcf0ced@omnitor.se> <CAOW+2dtpRoeYkMJzX9vyNUojJDax4DQUU2F4PauBwt1sm-83Hg@mail.gmail.com> <55f2b336-3f14-f49a-ec78-f00b0373db00@omnitor.se> <bc5b7aa5-7c6a-5096-47d0-01e5ee079e93@omnitor.se>
From: =?UTF-8?Q?Martin_J._D=c3=bcrst?= <duerst@it.aoyama.ac.jp>
Organization: Aoyama Gakuin University
Message-ID: <f848e323-f99b-97f5-9b7a-5ad42ca327d2@it.aoyama.ac.jp>
Date: Wed, 22 Nov 2017 14:48:27 +0900
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <bc5b7aa5-7c6a-5096-47d0-01e5ee079e93@omnitor.se>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 8bit
X-Originating-IP: [133.2.210.64]
X-ClientProxiedBy: OS2PR01CA0123.jpnprd01.prod.outlook.com (10.174.152.17) To TY1PR01MB0254.jpnprd01.prod.outlook.com (10.161.135.18)
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: ad356314-b3c0-4c07-ffdf-08d5316cab03
X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(4534020)(4602075)(4627115)(201703031133081)(201702281549075)(5600022)(4604075)(2017052603258); SRVR:TY1PR01MB0254;
X-Microsoft-Exchange-Diagnostics: 1; TY1PR01MB0254; 3:I5JCE8olvTQwiVM7JVnWQXvvhpKajK5VzayEagXl+7NS823MNndQSavYwIEjMoiDG6QKk47sU/UabNQOPgyjs6yS5DBQxwynRCzj4YDCsWS13NX3iO7ThMehXffQsSLQBUsG/+Y7xhOO4Jj7iYMsEyFmAKnS+Okv6D850CFVVdDdbYh+EFdbCfcy0mz46N5AJuaQdZP7zRrq6PV//QvMNRgA6WxKhXeL6hzooSblsKLyi95J27arutNcISrk0rnk; 25:icpmYkJ7/bFmBRwJZ/HuOAAhEx/rTOWRZYH3QC2+pRrt2VweS6BJJtLBg7JAI7GlPpdBv/fb8NNsgY/kccDPGRhH7nKKWpYqjWWoXTcmZ0Sn5EtuGqSTdvFJWpCsrRqnJEApXIFWkiqI1egPS3qp0kXxsJM4vOwhOe0ROH46j7Lk7TPiMX5ndKbQhKP8a+XmiRRH/+MEW9zpR+HFDuslu0T+LRUDEhPSpaT4fdQn2LpYepexgn/A4FTXs7b6GXoVxjsvPvh/qd8ygYebfZJphBbRRBaBHaRP8p5X5eNIbAZNnYkM5iAg7z8vZ0o1G7aQnQIQLFWKmsB28v76bT2caaHeecPmkH8EZ1PdpFbeTY4=; 31:Urz9nQGS6d119noaBmLpP3SIYhQ9Md5XX/PY9K+aElsgtxQQDluVk7Llsig9Q18DpDi+h7/BrZ/dE3I5kIQmp+K7+G1VklNwBHkSuAdTd+EwKk1m7zQqjho6hyw3mbIASpdJZHUkmgKt1Nb2dlbWzwP+LQU9QCeAPhwKH3tZaDIH0DXl8McuQxylxNJ0V+QxW9fTJDPJxPHP1X6YTl4YW8pDid6gApLAAH0CQoVa1mY=
X-MS-TrafficTypeDiagnostic: TY1PR01MB0254:
X-Microsoft-Antispam-PRVS: <TY1PR01MB0254E9FB9AA55CF325563768CA200@TY1PR01MB0254.jpnprd01.prod.outlook.com>
X-Exchange-Antispam-Report-Test: UriScan:;
X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(2401047)(5005006)(8121501046)(3002001)(100000703101)(100105400095)(3231022)(93006095)(93001095)(10201501046)(6041248)(20161123562025)(20161123558100)(20161123555025)(20161123560025)(201703131423075)(201702281529075)(201703061421075)(20161123564025)(6072148)(201708071742011)(100000704101)(100105200095)(100000705101)(100105500095); SRVR:TY1PR01MB0254; BCL:0; PCL:0; RULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095); SRVR:TY1PR01MB0254;
X-Microsoft-Exchange-Diagnostics: 1; TY1PR01MB0254; 4:c9ZBWUOd5V0vr2ii2sBw86jWEXQnlILHBL9/UEUotYKvtUB25YvleMdYymUHfGuWcFsM36KZiRjVyqvr10TrplBf/US+v1q+/SVk5uO1FvOWm59WRlB2DvsuVONYeId1h33WrDX8GsMK2r5UkYgeYJ9+/i0OOsbxtmAIMM59267//khe/T2Bv0Bm7OPGeKw13ShjiRiQMdNJz88RJpz3e/wb7hieEP9c9VqBRYxytK48hakoWCSdC0ZtIAeyfLmPlu0YTvl7t3zAFYPH9Xx6EQ==
X-Forefront-PRVS: 0499DAF22A
X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10019020)(6049001)(6009001)(376002)(346002)(199003)(24454002)(189002)(6666003)(97736004)(229853002)(2950100002)(6306002)(6246003)(53546010)(47776003)(65806001)(66066001)(65956001)(8676002)(74482002)(110136005)(58126008)(81156014)(81166006)(6116002)(76176999)(25786009)(8936002)(42882006)(31696002)(39060400002)(86362001)(54356999)(50986999)(4326008)(3846002)(53936002)(561944003)(64126003)(189998001)(7736002)(93886005)(68736007)(508600001)(83506002)(67846002)(50466002)(101416001)(106356001)(105586002)(786003)(33646002)(230783001)(16576012)(23676004)(52146003)(5660300001)(90366009)(2486003)(16526018)(6486002)(65826007)(2870700001)(2906002)(36916002)(31686004)(305945005)(966005)(49976008)(3940600001); DIR:OUT; SFP:1102; SCL:1; SRVR:TY1PR01MB0254; H:[133.2.210.64]; FPR:; SPF:None; PTR:InfoNoRecords; A:0; MX:1; LANG:en;
Received-SPF: None (protection.outlook.com: it.aoyama.ac.jp does not designate permitted sender hosts)
Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=duerst@it.aoyama.ac.jp;
X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtUWTFQUjAxTUIwMjU0OzIzOjFxSVFHRTdVV2lwZ1ZYUGxISkFFQ3dKeFBq?= =?utf-8?B?OG1yYVNHczdobmNIczBJT1VkWEF6bDJTOFRaemFXRXVuNURFc0pkdm1CUVRJ?= =?utf-8?B?OXFoajltWVkwUlk5WmZheDdwbkp5N085d09JU2hTTVRwSEhEcFpGTnpZZkVK?= =?utf-8?B?SFFxVzRDOHZEOC91Y3pXeTdOMzVLMENyaEo4cTJETWg3K0hzdHl1cGFpN1Jt?= =?utf-8?B?WnhBTWl2dk1WZHNwOHBVcm5DM1MzV2NQMGIvWlZ2Q3lsUTdGZ2JYbkdwMjdL?= =?utf-8?B?YjNDNlZnWE5iSjhXeTlpZGx5b2NuUHk4NElOUG01OFJONFlCSWhka0pnS2p3?= =?utf-8?B?RXUzdFFuRFR4SWNTYzZEMS9zVStJWWRjbFZYSE42UERXR3FsUVFUR3ovVHgz?= =?utf-8?B?Mm5pK1hZZFZyOFR6cGFzNTR3alptQ0VKWnFFWGsxWWs2M05naUxmaTJQN3BT?= =?utf-8?B?K1pEZnRoWkg5WWgrMlZ2NFo5cXM2dGRGcVJld3VJS1FSUFBoRTljeWVmNDNX?= =?utf-8?B?U08vaWlzZktMTTUzMWxNYjVMSlpXV2RLUm5nOElTNE80eE44ZXY0T0NMMEl5?= =?utf-8?B?Z0RvL3AxN1R3dHd4aHdnWkhKaHpFaE9ZZXQzckVDT1NaMk92clVPNlRxZ25Q?= =?utf-8?B?bHREODdjam1iRWp6enFoMTR3R2ZjTk1PNHNCTDE0bHRlSWZXMDFxVWtJZDRQ?= =?utf-8?B?YUMvUTZPQWtacHFRWStDWXIwT0hteXRzeEVnWGhJMzNPOHlXUXF3T0pPWWtH?= =?utf-8?B?S01BR0VkcHYyZHp1QVJKR01ycVR3ZTRiOWRockJtSnpLYzh6MW9FTnF5Vmds?= =?utf-8?B?VGZ0Sk01Z3hka25wS3FoVWdjcTEzaStmMlA0L3gzSTF4V1Q2d0oxaWtwaDJj?= =?utf-8?B?ZWwvWUtJbGxVcDg5WDUrSnlyL3ZlektXNFdQNnl5dVFVQ2tsQWRHanpNWGh6?= =?utf-8?B?SzRoZDJOMEtlRzhlZ2ZadGdlNnZVODVsZ1NXd2R2T1h3QlY0WGpzYzJSdllB?= =?utf-8?B?bENYQXBzcW9vU25ZOGxzTlRzZHgzREpMemdGc29zSUZVTHdiN1VsZHVtU1NZ?= =?utf-8?B?WnBQN2dRT1pCWHUyckEvYmNscW9UMklPbC9mOHZ4SkNaNTZXT3BJWmQ1c2Rt?= =?utf-8?B?bWNNd3ByMFRXc1Q0UU55UjAzUEt6dVptRGtVampSOTJoVVkzNDFaTWJFRnhn?= =?utf-8?B?NXJmdHU1SjlLVmxuc2ZwaTB3WXVBOXM0bHJlOXlDQnMwYmZxelNlcnFxOUFK?= =?utf-8?B?U3BHeHhoYmppakQvVXhFbGVZMm1lZXVNaDdRc0FSUHBia1ZpWDNyeWQrcFh0?= =?utf-8?B?VlNWNXBLclRFRDBSTDN4REl0ci96Tk5iRElRRTVRNkdXc1NnRjZKM1BHTmN2?= =?utf-8?B?WkR3OXlqRmZWRTJiM1lsQVlza0l3d0dDK2t6TjFlRjhsRWxLcHFaUldtZkhp?= =?utf-8?B?NDJoRjBtbSs3MDNHVytISUdZbXR6UlNaU3locE9Ybm02VC9WOUEvZVAxTFFr?= =?utf-8?B?aXoxMjQzYTVqRVVHYVhnZ3Z0TmtxSkw4UUt2UEhidCtzREloZm12K2VmcFR2?= =?utf-8?B?ZTM5aU9pSzN3a1ZBV1gxT0t0c3llTmVHUVF4bW9SemM5TVBxaC9HVzJxdTBB?= =?utf-8?B?QkJDOXRsM3BZL0lzREJjcUxPSXFiZURrOS9mNGFDaC9vdkVheDVJZTFlRFhz?= =?utf-8?B?TVZadVNUaW95enVjZGtyMllwSytMSDJVcFB6UEFEdGJQS2NmM2tnLzJEa01s?= =?utf-8?B?M2J4ZGJCS0IxWnh3bjduM3EwSm1iakowRjV2VTlLU3lTYUplL1NqaHN2Mmh4?= =?utf-8?B?TkZ6OFI4V0lVWEZHY0lnaG5YcFVjSDdGUDMyKzJxS2tqTFYrbS9RNGVtZjhp?= =?utf-8?B?RW9MRU5jeWR3NHdnS1UwMXBVQ2pGNDl1bDlSV0doVzBMdzhiVmhyM3pYRXIx?= =?utf-8?B?ZnF3VjBxMU5UcXlPRk96ZHUvM1pPMmxpTnhsWGxZVjltZ1FQbGt6UzhXOGdi?= =?utf-8?B?QnBWWUE2Rnh5SCt0akZQbnd0cEVrTHhtMlpkQ1E0OXIvM2ZBaFJ5dHdTYzRV?= =?utf-8?B?UUF0aG5YQXNQaksvVlpxRkhtRVlrYkdTd0QrRm1nWnZVbzk4dldQNDlCOWpi?= =?utf-8?Q?2TZY2OTe8OZVEEvPohznhAHaPdPfZVZNmYjYFsXsAsDh?=
X-Microsoft-Exchange-Diagnostics: 1; TY1PR01MB0254; 6:hmAPuBvlmaqsw00qcQcxW0s9D5nJpqD1aVUrops0aXwp7UK+cELWXMWgodz87cA/LNXSzOT0/2A4F//qCiG3xVND2X77PQ8aXaMpL+vBfaeBCJY9K0GRlrMuJoYsYKPwxifyp93f0jzC23qoy+HSR5hI1J8sMHzphgzwfbtvRSZ4kpilU/4wRuqltQMmgDiOL8UQgPOz3bk7QVFZxBjwGFtmqVGRW4lCwZ3peR7A2k9T4pxJ0yS58BHVlpgfAAclOj2k7PpVgzY6TluJOczE8FuMwGb7GXkWEz04ss0xi2NDFttiPoDLJs0ySButO2jcm64F5MQH+aysXvFGIMtlKfgUxnPd6AFyZrshkcD7NSk=; 5:edEmWUrt99Wme8vahEqO4XDfGEqABh94QBaR/z1qJpieLeUeOlHk10oOqA/6rsLLDSH3ijPUm03g1CgsrGmPCK4qTBnRzVauCw+P+i5gvbUw6InC3X9UcHi01KJj0vYC/HNg1YXNr39r7yoPiFQbZ3Uq6pMCGRSJfDhJK1Z3N4g=; 24:QXDxA6sim3zoeUZ93Wf3c1V0L0wgg3L71N+52YyrjFZajSFM7EmZHsdVzH5E8ZsNFgOEgA1YTZyD06IoJHRpnEHtP2pbUKK5O2JDCZaeUzo=; 7:j78S4lcg5VuAc/RwR4ZI7/myPPmz5WRbSaYycs5bsGIOMw8PNgEJhXo4d2oai5sfoJxkNYg433CbwIg52tEkrBBuYSqpSR7g1FbrEnoJsNil2my4/TPOTbk2zx5jDTkUk+F/RIXrzzSomNWY/63CON7CTtu7/0wWb+BQqgN/4J+UGtg46ynv/4j9EEtPK7cdHm+kqwziRyoi33N3QqTtN7Zj8fekeG0pm9VrkGY9l186jcpxJoUGkZr4t1HX+vYf
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-OriginatorOrg: it.aoyama.ac.jp
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Nov 2017 05:48:33.1781 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: ad356314-b3c0-4c07-ffdf-08d5316cab03
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: e02030e7-4d45-463e-a968-0290e738c18e
X-MS-Exchange-Transport-CrossTenantHeadersStamped: TY1PR01MB0254
Archived-At: <https://mailarchive.ietf.org/arch/msg/slim/hfhmvfutDM1zkeKy_pr_mqOUJ0A>
Subject: Re: [Slim] Moving forward on draft-ietf-slim-negotiating-human-language
X-BeenThere: slim@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Selection of Language for Internet Media <slim.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/slim>, <mailto:slim-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/slim/>
List-Post: <mailto:slim@ietf.org>
List-Help: <mailto:slim-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/slim>, <mailto:slim-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Nov 2017 05:48:40 -0000

On 2017/11/21 06:14, Gunnar Hellström wrote:
> A new proposal for new text taking in latest discussion of Bernard, Paul 
> and Brian:

> -----New text------------
> 5.4 Media, Language and Modality indications

> A sign language can be identified by the existence in the IANA registry 
> of language subtags according to BCP 47 [RFC5646] of the language subtag 
> with the Type field "extlang" combined with the Prefix field value "sgn".
> A specific spoken or written language can be identified by not having 
> any such "sgn" Prefix.

https://tools.ietf.org/html/rfc5646#section-3.4, point 12.C.3, currently 
says:

             3.  Sign languages SHOULD have an 'extlang' record with a
                 'Prefix' of 'sgn'.

As everybody here on this list knows, a SHOULD is not a guarantee, 
because there might be exceptions. The fact that there currently are no 
exceptions doesn't guarantee that there will be no exceptions in the future.

Regards,   Martin.