Re: [Ltru] Fwd: draft-davis-t-langtag-ext

["Doug Ewell" <[e-mail]>]

Mykyta Yevstifeyev proposed to replace

> | lang= | language       | [BCP47  <http://tools.ietf.org/html/draft-davis-t-langtag-ext-01#ref-BCP47>], with restrictions |
> |       | ["-" script]   |                            |
> |       | ["-" region]   |                            |
> |       | *("-" variant) |                            |

in the present draft with:

> lang     = langtag

This won't work, because BCP 47 'langtag' includes tags that contain an extension or private-use component, which are not allowed in the present draft because that would leave no exit from 't' to other extensions or private-use components within the main tag.  So this particular optimization of Mykyta's needs to be rejected.

Along the same lines, Addison replied to Debbie:

>> In other words is the following allowed:  'ja-t-it-m0-xxx-v21a-2007-i-ami'
>
> The -t extension can, itself, be followed by other extensions or by private use. So, yes, that language tag would be allowed.

But only if there is an extension 'i' which defines 'ami' as a subtag within that extension.  It could not have anything to do with the grandfathered tag "i-ami" meaning "Amis," except in the unlikely and inadvisable situation that the extension subtag also has that meaning.

--
Doug Ewell | Thornton, Colorado, USA | RFC 5645, 4645, UTN #14
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