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Date: Sun, 14 Jun 2009 22:18:56 +0900
Message-ID: <3f0ad08d0906140618w53c82556ye709c70efc1c65e0@mail.gmail.com>
Subject: Re: [Fwd: [1.7] wcwidth failing configure tests]
From: IWAMURO Motonori <deenheart AT gmail DOT com>
To: newlib AT sourceware DOT org, cygwin AT cygwin DOT com
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2009/6/13 Corinna Vinschen <vinschen AT redhat DOT com>:
>> I'm not sure which "standard" you are referring to.
>
> The problem appears to be that there is no standard for the handling
> of ambiguous characters.

Yes, but the guideline exists.
http://cygwin.com/ml/cygwin/2009-05/msg00444.html
> 2) Unicode Standard Annex #11
> http://www.unicode.org/unicode/reports/tr11/ recommends:
> > 5 Recommendations
> (snip)
> > When processing or displaying data
> (snip)
> > Ambiguous characters behave like wide or narrow characters depending
> > on the context (language tag, script identification, associated
> > font, source of data, or explicit markup; all can provide the
> > context). If the context cannot be established reliably, they should
> > be treated as narrow characters by default.

> Define the default for ja, ko, and zh to use width = 2, with a
> @cjknarrow (or whatever) modifier to use width = 1.

I think it is good idea.
-- 
IWAMURO Motnori <http://vmi.jp/>

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