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Message-ID:	<5b8fc4ea.1c69fb81.3d08d.d585@mx.google.com>
Date:	Wed, 05 Sep 2018 04:58:34 -0700 (PDT)
From:	Steven Penny <svnpenn AT gmail DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Cygwin fails to utilize Unicode replacement character
References:	<20180905075528 DOT GA22010 AT calimero DOT vinschen DOT de>
User-Agent:	Tryst/2.8.0 (cup.github.io/tryst)

On Wed, 5 Sep 2018 09:55:28, Corinna Vinschen wrote:
> I added DejaVu Sans Mono per the above and to my surprise I see this:
>
>   $ cat alfa.txt
>   =EF=BF=BD
>
> So it looks like Deja Vu has a 0xfffd char.  However, GetGlyphIndicesW
> claims otherwise:

a character that DejaVu Sans Mono actually doesnt have is:

    U+01C4 LATIN CAPITAL LETTER DZ WITH CARON

Using this file:

    $ cat glyph.c
    #include <stdio.h>
    #include <windows.h>
    int main()
    {
      CONSOLE_FONT_INFOEX ta;
      ta.cbSize = sizeof ta;
      GetCurrentConsoleFontEx(GetStdHandle(STD_OUTPUT_HANDLE), 0, &ta);
      HDC wh = GetDC(0);
      SelectObject(wh,
        CreateFontW(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ta.FaceName));
      WCHAR xr[4] = {0xFFFD, 0x2592, 0x25A1, 0x01C4};
      WORD zu[4];
      GetGlyphIndicesW(wh, xr, 4, zu, 1);
      printf("%ls:\n", ta.FaceName);
      for (int q = 0; q < 4; q++) {
        printf("  U+%04X: %s\n",
        xr[q], zu[q] == 0xffff ? "failure" : "success");
      }
    }

I get this result:

    DejaVu Sans Mono:
      U+FFFD: success
      U+2592: success
      U+25A1: success
      U+01C4: failure


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