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Re: [I18nrp] Mappings for IDNA2008 ?

Patrik Fältström <paf@frobbit.se> Wed, 13 February 2019 07:46 UTC

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From: Patrik Fältström <paf@frobbit.se>
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Date: Wed, 13 Feb 2019 08:46:42 +0100
Cc: Patrik Fältström <paf=40frobbit.se@dmarc.ietf.org>, Asmus Freytag <asmusf@ix.netcom.com>, "i18nrp@ietf.org" <i18nrp@ietf.org>
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References: <20190204225047.02583200DC1666@ary.qy> <6660b7e2-1d5b-6a5d-3d1c-55a757e24843@ix.netcom.com> <ADDA4540-9169-4EE6-B33E-3A0D9EED0BD7@frobbit.se> <16ff0d27-9508-7fdd-bc89-9d6fd47396b1@ix.netcom.com> <D5B49CC8-7AEF-4E81-8774-F3F1F05682E8@frobbit.se> <320f4bc3-17b1-595b-34c7-8f95f69c0f33@ix.netcom.com> <B87C6774-4FF7-4A18-A81D-D0834401C293@frobbit.se> <bc7b727d-f75c-bbba-4f63-ebd1dcd87085@it.aoyama.ac.jp> <A5549B92-9414-4210-A94D-8E53339D3961@frobbit.se> <96242bed-ec65-5955-5a4d-5699b9e3cfb9@it.aoyama.ac.jp>
To: "\"Martin J. Dürst\"" <duerst@it.aoyama.ac.jp>
Archived-At: <https://mailarchive.ietf.org/arch/msg/i18nrp/Nyc1Jl-gEROb297jBvSgLsF2pbo>
Subject: Re: [I18nrp] Mappings for IDNA2008 ?
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> On 13 Feb 2019, at 08:18, Martin J. Dürst <duerst@it.aoyama.ac.jp> wrote:
> 
> If f(x) is the generic mapping, and f'(x) is the mapping of the 
> exceptions, then f(f'(x)), which applies f' *before* f, should do the job.

This works in some cases and not in other cases. All depending on what the functions do. Sure, might be able to find f’(x) that works in Turkish, or French or German, but it also sets a requirement on f(x).

But this is what I mean by the need for whatever see a string the first time should do mapping according to locale and after that just validation that strings are valid.

   Patrik

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