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Re: [I18nrp] Mappings for IDNA2008 ?

"Asmus Freytag (c)" <asmusf@ix.netcom.com> Tue, 05 February 2019 08:30 UTC

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To: Patrik Fältström <paf@frobbit.se>
Cc: i18nrp@ietf.org
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From: "Asmus Freytag (c)" <asmusf@ix.netcom.com>
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Date: Tue, 05 Feb 2019 00:29:59 -0800
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Subject: Re: [I18nrp] Mappings for IDNA2008 ?
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On 2/4/2019 11:24 PM, Patrik Fältström wrote:
> On 5 Feb 2019, at 0:27, Asmus Freytag wrote:
>
>>> Are there any published IDNA2008 mappings?  As far as I can tell,
>>> everyone uses one from UTS46 by default, and it's not very good.
>>>
>> Examples of its badness, please.
> Mapping of characters, including case folding, is LOCALE specific.
>
>    

That's not in contradiction to using a generic mapping for the 90% case 
and applying tailoring (on a per locale or other basis).

It may explain why it's bad to use a default WITHOUT adding tailoring, 
but does not explain why a particular generic mapping represents a "not 
very good" starting point for such tailoring.

A./

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