Review of draft-philips-langtags-03: ABNF errors

[Addison Phillips [wM]]

Hi Harald,

Thanks for the feedback. Please note that the ABNF in draft-03 validates with the tool, excepting the use of underscore.

I will make the various corrections in draft-04, after I've reviewed the ABNF again.

Addison

Addison P. Phillips
Director, Globalization Architecture
webMethods | Delivering Global Business Visibility
http://www.webMethods.com
Chair, W3C Internationalization (I18N) Working Group
Chair, W3C-I18N-WG, Web Services Task Force
http://www.w3.org/International

Internationalization is an architecture. 
It is not a feature.

> -----Original Message-----
> From: ietf-languages-bounces at alvestrand.no 
> [mailto:ietf-languages-bounces at alvestrand.no]On Behalf Of Harald 
> Tveit Alvestrand
> Sent: 2004年6月23日 13:08
> To: ietf-languages at iana.org
> Subject: Review of draft-philips-langtags-03: ABNF errors
> 
> 
> I have at last started to seriously review this document, with a view to 
> offering my opinion to the IESG for their perusal - I'll recuse on the 
> processing itself.
> 
> But - the ABNF is NOT ready for prime time.
> 
> The authors seem to believe that =/ is a continuation symbol (it is not), 
> and that there is a space between the number-quantifier and the rule it 
> quantifies (there isn't).
> 
> Also, "x" strings are case-insensitive, so they can't be used in ranges - 
> hex codes have to be used.
> 
> And underscores aren't allowed in rule names.
> 
> Here's a grammar for the stuff that at least parses correctly:
> ------------------------------------------------------------
> langtag   = lang *("-" extlang) ["-" script] ["-" region]
> 	 *("-" variant) *("-" extension) *("-" private-use)
>       / private-use       ; private use tag
>       / grandfathered     ; grandfathered registrations
> 
> lang            = 2*3ALPHA                ; shortest ISO 639 code
> 		/ registered-lang
> extlang         = 3ALPHA                  ; reserved for future use
> script          = 4ALPHA                  ; ISO 15924 code
> region          = 2ALPHA                  ; ISO 3166 code
> 		/ 3DIGIT                 ; UN country number
> variant         =  5*15alphanum           ; registered or private use 
> variants
> extension       = singleton 1*("-" (2*31alphanum)) ; extension subtag(s)
> private-use     = "x" 1*("-" (1*31alphanum))       ; private use subtag(s)
> singleton       = ALPHA      		; single letters - x has 
> spec meaning
> registered-lang = 4*15ALPHA               ; registered language subtag
> grandfathered   = ALPHA *(alphanum / "-") ; grandfathered registration
> alphanum        = (ALPHA / DIGIT)          ; letters and numbers
> 
> 
> 
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