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Re: [I18nrp] Mappings for IDNA2008 ?

"John Levine" <johnl@taugh.com> Fri, 08 February 2019 17:58 UTC

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From: John Levine <johnl@taugh.com>
To: i18nrp@ietf.org
Cc: duerst@it.aoyama.ac.jp
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Subject: Re: [I18nrp] Mappings for IDNA2008 ?
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In article <bc7b727d-f75c-bbba-4f63-ebd1dcd87085@it.aoyama.ac.jp> you write:
>I don't understand the last sentence. If we take the case of Turkish, 
>then the generic mapping tables are useful because once we have them, a 
>suitable Turkish mapping can be defined as a small delta (e.g. a small 
>preprocessing step) to the generic mapping tables.

That would be great if the small delta tables actually exist.  But
they don't.  It's been a decade since IDNA2008 and I have yet to see
any language-specific mappings at all.

I agree that the mapping tables for languages written in Latin
characters will mostly be the same, but it's the differences that
cause problems.  Software that works most of the time not the same as
software that works.

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