This appears to be redundant, since we have this bullet item nearby that more-directly accomplishes the same thing. The only other addition that seems to be implied here is the one about case, so I added on to the end of the bullet so that it reads thusly:
<t>Each extension subtag MUST be from two to eight characters long
and consist solely of letters or digits, with each subtag separated by
a single '-'. Case distinctions are ignored in extensions
(as with any language subtag) and normalized subtags of this type
are expected to be in lowercase.</t>
> Btw, item 3 in that same list is not a separate rule; it is a
> tangential note related to what is discussed in 2, and does not
> pertain directly to extensions. I suggest that the text in that
> paragraph should not be a separately-numbered item in that list,
> but should just be a parenthetic not appended to item 2. (I.e. the
> item currently numbered 4 would get renumbered to 3, etc.)
I merged the current item 3 with its preceding paragraph.
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: Monday, July 07, 2008 1:08 PM
> To: LTRU Working Group
> Subject: [Ltru] 2.2.6: requirements on extensions
>
> Draft 16 currently has this wording in Section 2.2.6:
>
> --------------
> 5. Extension subtags MUST meet all of the requirements for the
> content and format of subtags defined in this document.
> --------------
>
> IMO, this is so vague as to be un-enforceable. E.g., does rule 2
> for script subtags (alpha 4 come from ISO 15924) apply? (Surely
> not.) Thus, it's not clear to me what value this item adds. I think
> it could be dropped without loss.
>
>
>
>
> Peter
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