language tags: better replacements for grandfathered

Description

The latest LDML spec says (tr35.html#Language_Tag_to_Locale_Identifier)

If the tag is one of the five deprecated grandfathered tags (cel-gaulish, i-default, i-enochian, i-mingo, zh-min) remaining after step #1, prefix by "und-x-".

However, ICU has had replacements with somewhat "better" language subtags:

Mark says

I think I came up with the ICU tags years ago, and the language choices would be better than "und". Maybe a good idea to change LDML (even though these are edge-edge cases).

I suggest we use these in the LDML spec and data.

xpath

None

locale

None

Priority

major

Assignee

Mark Davis

Reporter

Markus Scherer

Reviewer

Yoshito Umaoka

Fix versions

phase

spec-beta

Components

Labels

None

tracCreated

Jan 30, 2019, 4:36 PM

tracStatus

closed

tracResolution

fixed

tracOwner

mark

tracReporter

markus
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