bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X

[Eli Zaretskii]

> Date: Sun, 10 Jul 2016 18:09:02 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: 23934@debbugs.gnu.org
> 
> Using (window-text-pixel-size nil 3 5):
> 
> Menlo: (0 . 14)
> Monaco: (7 . 16)

It figures.

> > The above line says that Menlo does have the glyph for the accent.
> > Emacs will not compose characters from different fonts.
> > 
> > > by these glyphs:
> > >   [0 1 1072 870 7 0 7 7 1 nil]
> > >   [0 1 769 646 7 2 6 10 -7 [-8 -1 -8]]
                     ^
That "7" is IMO completely bogus.  All the fonts I tried, and also
Monaco you tried, give a zero there.