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Re: I've made a simple program, showing UTF-8 lower but not uppercase wo

From: Thomas Dickey
Subject: Re: I've made a simple program, showing UTF-8 lower but not uppercase working
Date: Fri, 23 Sep 2005 18:19:32 -0400 (EDT)

On Fri, 23 Sep 2005, amores perros wrote:

Since my last post here, I've proceeded to isolate a test program

I read that, but it's been a busy week.
The normal libncurses.so cannot do anything useful with UTF-8.
It won't produce it, cannot read it.

It occurs to me that I could have handled the special case of Latin-1 in a UTF-8 locale, but that isn't generally useful (though I do that in the text editor vile). Something for a to-do list, e.g., to handle the various legacy code that doesn't know anything about locales. It won't be in ncurses 5.5 though.

To read/write UTF-8, you need the libncursesw flavor.

successfully printing a UTF-8 string out via printf, but then
invoking ncurses and observing mixed results -- the lowercase
letters are ok, but the upperones are apparently trashed (I see
open boxes, and more characters than I should).

I'm still testing on ncurses5.4 from debian linux stable.

Debian/testing has a ncursesw5.4

I'll enclose the source of my test program below.

I was unable to test using cchar_t and widechar variants
of the API, which I gather should exist on some versions,
because they were absent from /usr/include/ncurses.h
(where I expected to find them).

They exist in the ncursesw version.

I'm not clear whether UTF-8 is supposed to be supported
on ncurses 5.4. Judging by some remarks about it here
I deduce (but am not positive)  that it should be supported.

UTF-8's worked reasonably well since before ncurses 5.4;
most of the fixes since then have dealt with multicolumn

Thomas E. Dickey

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