Re: [Ltru] Re: RFC 4646 production "grandfathered" considered harmful

[Addison Phillips <addison at yahoo-inc.com>]

+1

Doug Ewell wrote:
> Mark Davis <mark dot davis at icu dash project dot org> wrote:
>
> > Although Frank has a point, I think my preferred approach would be to 
> > simply define but immediately deprecate subtags like lobjan -- that 
> > removes them from the grandfathered list. For the ABNF, we are then 
> > only left with the items that are syntactically ill-formed, which we 
> > could express with:
> >
> > grandfathered = "i-" irregularI
> >            / "sgn-" irregularSgn
> >            / irregularOther
> >
> > irregularI = "ami" / "bnn" / "default" / "enochian" / "hak" / 
> > "klingon" / "lux" / "mingo" / "navajo" / "pwn" / "tao" / "tay" / "tsu"
> > irregularSgn= "BE-fr" / "BE-nl" / "CH-de"
> > irregularOther = "en-GB-oed"
> >
> > We then have the smallest ABNF that (with the exception of duplicate 
> > singletons), describes the well-formed cases without letting anything 
> > else in.
>
> I think creating more deprecated-at-birth subtags is a terrible idea. As 
> you showed, it doesn't even simplify the ABNF -- you still have the 
> messy "irregularOther" production.  It reduces the size of the list in 
> the ABNF, but increases the amount of trash in the Registry.
>
> The ABNF can't cover every possible syntactical tagging rule anyway; 
> consider en-b-bbb-a-aaa.
>
> --
> Doug Ewell
> Fullerton, California, USA
> http://users.adelphia.net/~dewell/
> RFC 4645  *  UTN #14
>
>
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--
Addison Phillips
Globalization Architect -- Yahoo! Inc.

Internationalization is an architecture.
It is not a feature.

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