Re: [Ltru] Canonical variants

["Phillips, Addison" <addison at amazon.com>]

I tried to fit your rewording into the draft, but it really wasn't quite right either. I ended up making a list of rules, as follows:

<t>If more than one variant appears:

  <list style="letters">

  <t>Order those variants related to the "base tag" via a 'Prefix' ahead of those variants that lack the relationship. For example, the tag "en-scottish-fonipa" (English, Scottish dialect, IPA phonetic transcription) is in canonical order because 'scottish' has a 'Prefix' of "en", while 'fonipa' has no 'Prefix' field.</t>

  <t>Order any variant that includes another variant or list of variants in one of its 'Prefix' fields directly following that variant (or list of variants). For example, the tag "sl-1994-biske-rozaj" would be canonicalized as "sl-rozaj-biske-1994".  This is because 'rozaj' lists "sl" as its sole 'Prefix'; 'biske' lists "sl-rozaj" as its sole Prefix. The subtag '1994' has several prefixes, including "sl-rozaj". However, it follows both subtags because one of its 'Prefix' fields is "sl-rozaj-biske".</t>

  <t>Keep any remaining variant subtags in their original order. For example, both the tags "tlh-boont-fonipa" (Klingon, Boontling, IPA phonetic transcription) and "tlh-fonipa-boont" are considered "canonical". The 'boont' subtag has a 'Prefix' of "en" (it really shouldn't appear in this tag), while 'fonipa' has no 'Prefix'. The reason for the selection and ordering of these subtags cannot be determined from the registry, so the original order is maintained.</t>

</list>
</t>

Comments?

Addison

Addison Phillips
Globalization Architect -- Lab126

Internationalization is not a feature.
It is an architecture.


> -----Original Message-----
> From: ltru-bounces at ietf.org [mailto:ltru-bounces at ietf.org] On
> Behalf Of Peter Constable
> Sent: Tuesday, July 15, 2008 2:50 PM
> To: ltru at ietf.org
> Subject: Re: [Ltru] Canonical variants
>
> > From: ltru-bounces at ietf.org [mailto:ltru-bounces at ietf.org] On
> Behalf Of
> > Phillips, Addison
>
>
> > And then in canonicalization say:
> > --
> > 6. If more than one variant appears, order the variants according
> to
> > their Prefix fields in the registry. In this order, if a variant
> > appears in one of a variant's Prefix fields, it MUST appear in
> the tag
> > preceding that variant. If none of the other variants appear in
> the tag,
> > order it after any variants that have a prefix that matches the
> tag,
> > otherwise preserving the original order selected by the user.
>
> > Comments?
>
> Only that the 2nd and 3rd sentences need to be reworded -- though
> it's not exactly easy to come up with straightforward wording for
> this. He's alternate wording -- not sure that it's much better,
> though:
>
> 6. If more than one variant appears, order the variants according
> to their Prefix fields in the registry. In this order, all variant
> subtags within a tag that have a Prefix-field relationship with
> another variant subtag also within that tag MUST occur before
> variant subtags that do not have such a relationship, and they must
> be ordered such that if variant1 is listed as a Prefix for variant2
> then variant1 MSUT occur in a tag before variant2.
>
>
>
> Peter
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> Ltru at ietf.org
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