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Re: emacs-unicode-2: #xFF01 .. #xFF60 should be set double width in char

From: Kenichi Handa
Subject: Re: emacs-unicode-2: #xFF01 .. #xFF60 should be set double width in char-width-table
Date: Thu, 09 Nov 2006 20:39:35 +0900
User-agent: SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/22.0.50 (i686-pc-linux-gnu) MULE/5.0 (SAKAKI)

In article <address@hidden>, James Cloos <address@hidden> writes:

>>>>>> "Kenichi" == Kenichi Handa <address@hidden> writes:
Kenichi> They are ambiguous according to EastAsianWidth.txt of
Kenichi> Unicode.  I think the right thing is to set them to the
Kenichi> symbol `ambiguous', and make display routine (and column
Kenichi> calculation routine) to resolve it to 1 or 2 by checking a
Kenichi> font (or a capability of terminal).  In a case that such
Kenichi> information is not available, perhaps, we should resolve
Kenichi> according to the current locale.

> Does the current locale influence the current font?

The current locale influence the font selection in

> Modulus that issue I agree that the above is exactly what
> any app ought to do with the ambiguous-width chars.

> (Another related -- and I presume mostly theoretical -- question
> is what should be done when such a character is part of a combining
> or variation sequence....)

Difficult subject.  :-(

Kenichi Handa

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