Re: [dev] [st] Rendering only half of emoji in curses-based program

From: Andrej Nabergoj <andrej.nabergoj_AT_siol.net>
Date: Sat, 26 Apr 2025 18:45:04 +0200

ich capability was responsible for this behavior.
If I add if clause to do nothing if it is dummy char in tinsertblank() function
everything I tested works same as in other terminals.

if (!(term.line[term.c.y][term.c.x].mode & ATTR_WDUMMY)) {
    memmove(&line[dst], &line[src], size * sizeof(Glyph));
    tclearregion(src, term.c.y, dst - 1, term.c.y);
}

Is there any way to test if this is ok, I don't know how that works.

On 21/04/25 09:46, Andrej Nabergoj wrote:
> Now I understand a little what terminal does and what programs are
> responsible for. So if I use this example curses program and save output
> to file (with this option -o) I get this additional escape sequences
> after wide character (backspace, space,...) but not if I draw it on
> positions other than (row-1, col-3).
>
> Part of output: "字[1_AT_"
>
> Example program:
>
> #include <curses.h>
> #include <locale.h>
> int main() {
> int row, col;
> setlocale(LC_ALL, "");
> initscr();
> getmaxyx(stdscr, row, col);
> mvprintw(row-1, col-3, "字");
> getch();
> endwin();
> return 0;
> }
>
> Do you have any idea why? What should I look at now?
> Thank you!
>
> Regards,
> Andrej
>
> On 07/04/25 09:45, Roberto E. Vargas Caballero wrote:
> > Quoth Andrej Nabergoj <andrej.nabergoj_AT_siol.net>:
> > > For the same string without curses there is no problem, so probably is
> > > not st problem, but in other terminals I don't get such behavior.
> > >
> >
> > Ok, this is an important point. It is possible that some terminfo
> > capability has some effect on this topic. There is the option -o
> > in st that allows you to get a full copy of the input stream and
> > then you can see if there is something else happening that you cannot
> > see.
> >
> > Regards,
> >
> >
> >
Received on Sat Apr 26 2025 - 18:45:04 CEST