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Re: console update

From: Niels Möller
Subject: Re: console update
Date: 17 Jun 2002 09:09:59 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

Marcus Brinkmann <Marcus.Brinkmann@ruhr-uni-bochum.de> writes:

> The ncurses people did something similar with the cchar_t, but they had to
> use an array of five(!) UCS-4 characters, because that is what is required
> by the resp standard for combined characters.

What standard is that? At least unicode doesn't put any limit to the
number of combining characters one can use. A + dot above + comma below
+ enclosing square + ring above + enclosing ring is valid unicode text
as far as I know.

To me it makes sense to have the console array contain glyphs, not
unicode characters. Using precomposed characters is an approximation
of that. Perhaps one could abuse the private use area for glyphs that
correspond to other combinations that don't have precomposed form.
Preferably generated dnamically, some way.

But I guess there's no need to worry very much about that until we
have a glyph generator that tries to create a bitmap from an arbitrary
sequence of base char + combining characters...


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