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Date: Wed, 5 Sep 2018 17:58:30 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin fails to utilize Unicode replacement character
Message-ID: <20180905155830.GM6350@calimero.vinschen.de>
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On Sep  5 15:18, Marco Atzeri wrote:
> Am 05.09.2018 um 13:58 schrieb Steven Penny:
> > On Wed, 5 Sep 2018 09:55:28, Corinna Vinschen wrote:
>=20
> > Using this file:
> >=20
> >  =C2=A0=C2=A0 $ cat glyph.c
> >  =C2=A0=C2=A0 #include <stdio.h>
> >  =C2=A0=C2=A0 #include <windows.h>
> >  =C2=A0=C2=A0 int main()
> >  =C2=A0=C2=A0 {
> >  =C2=A0=C2=A0=C2=A0=C2=A0 CONSOLE_FONT_INFOEX ta;
> >  =C2=A0=C2=A0=C2=A0=C2=A0 ta.cbSize =3D sizeof ta;
> >  =C2=A0=C2=A0=C2=A0=C2=A0 GetCurrentConsoleFontEx(GetStdHandle(STD_OUTP=
UT_HANDLE), 0, &ta);
> >  =C2=A0=C2=A0=C2=A0=C2=A0 HDC wh =3D GetDC(0);
> >  =C2=A0=C2=A0=C2=A0=C2=A0 SelectObject(wh,
> >  =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 CreateFontW(0, 0, 0, 0, 0, 0, 0, =
0, 0, 0, 0, 0, 0, ta.FaceName));
> >  =C2=A0=C2=A0=C2=A0=C2=A0 WCHAR xr[4] =3D {0xFFFD, 0x2592, 0x25A1, 0x01=
C4};
> >  =C2=A0=C2=A0=C2=A0=C2=A0 WORD zu[4];
> >  =C2=A0=C2=A0=C2=A0=C2=A0 GetGlyphIndicesW(wh, xr, 4, zu, 1);
> >  =C2=A0=C2=A0=C2=A0=C2=A0 printf("%ls:\n", ta.FaceName);
> >  =C2=A0=C2=A0=C2=A0=C2=A0 for (int q =3D 0; q < 4; q++) {
> >  =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 printf("=C2=A0 U+%04X: %s\n",
> >  =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 xr[q], zu[q] =3D=3D 0xffff ? "fai=
lure" : "success");
> >  =C2=A0=C2=A0=C2=A0=C2=A0 }
> >  =C2=A0=C2=A0 }
> >=20
> > I get this result:
> >=20
> >  =C2=A0=C2=A0 DejaVu Sans Mono:
> >  =C2=A0=C2=A0=C2=A0=C2=A0 U+FFFD: success
> >  =C2=A0=C2=A0=C2=A0=C2=A0 U+2592: success
> >  =C2=A0=C2=A0=C2=A0=C2=A0 U+25A1: success
> >  =C2=A0=C2=A0=C2=A0=C2=A0 U+01C4: failure
> >=20
>=20
> Strange on W10 CMD I obtain
>=20
> DejaVu Sans Mono  U+FFFD: failure
                 ^^^
You see this?  There's something really fishy here.  I see a similar
effect which somehow depends on arbitrary changes to the source file:

- Sometimes I get "DejaVu Sans Mono" in FaceName and all works well.
- Sometimes I get "DejaVu Sans Mono\1" or "DejaVu Sans Mono\6" and
  the subsequent GetGlyphIndicesW returns failures for many or all
  characters.
=20=20
I'm trying to find what's affecting this for hours, but I don't get any
conclusive results :(


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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