1 May 01:08
Re: Re: modification of Prefix fields
Mark Davis <mark.davis <at> icu-project.org>
2007-04-30 23:08:45 GMT
2007-04-30 23:08:45 GMT
I'd suggest slightly different wording, since saying that it cannot be removed but can be modified is a bit odd. So I'd suggest:
The collection of fields of type 'Prefix' MUST NOT be changed in a way that narrows the meaning of the subtag. If there is no Prefix, then one cannot be added. If there a Prefix, then others can be added. A Prefix can be removed only if it is redundant: there is another Prefix that covers all of the cases that it does. For example:
Prefix: zh-Hant
Prefix: zh-Hans
can be replaced by
Prefix: zh
Prefix: ru
This is because addition of zh makes zh-Hant and zh-Hans redundant, so they can be removed, and the addition of "ru" only broadens.
Mark
On 4/30/07, Addison Phillips <
addison <at> yahoo-inc.com> wrote:
I changed the first instance to read:
<t>The field of type 'Prefix' MUST NOT be removed from any record. The
field-body for this type of field MAY be modified, but only if the
modification broadens the meaning of the subtag. That is, the field-body
can be replaced only by a prefix a prefix of itself. For example, the
Prefix "be-Latn" (Belarusian, Latin script) could be replaced by the
Prefix "be" (Belarusian) but not by the Prefix "ru-Latn" (Russian, Latin
script).</t>
Addison
Doug Ewell wrote:
> Stephen Silver <ltru at argentum dot freeserve dot co dot uk> wrote:
>
>> The current draft of 4646bis disagrees with itself on the question of
>> whether 'Prefix' fields can be modified.
>>
>> In section 3.1.7, it says:
>>
>> The field of type 'Prefix' MUST NOT be removed from any record.
>> The field-body for this type of field MUST NOT be modified.
>>
>> But in section 3.4, bullet 4, it says:
>>
>> Values in the field 'Prefix' in records of type 'variant' MAY be
>> modified, so long as the modifications broaden the set of prefixes.
>> That is, a prefix MAY be replaced by one of its own prefixes.
>
> Good catch. This wording was carried over from RFC 4646, where we in
> LTRU started out thinking that no modifications should be allowed, and
> then came to understand the potential for multiple prefixes or
> broadening changes. We need to change the first passage to match the
> second.
>
> --
> Doug Ewell * Fullerton, California, USA * RFC 4645 * UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
>
>
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--
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Internationalization is an architecture.
It is not a feature.
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