bug#18818: Incorrect font weight in dark background, Emacs 24.4 on Mac OS X 10.10

[Eli Zaretskii]

> Date: Sat, 21 Aug 2021 10:55:22 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: 18818@debbugs.gnu.org, Sun Yijiang <sunyijiang@gmail.com>
> 
> > +Synthetic bold looks thinner if the background is darker than the
> > +foreground and the LCD font smoothing is turned on.  In such cases,
> > +you can turn off synthetic bold for particular fonts and use
> > +overstriking instead by customizing the variable
> > +@code{face-ignored-fonts}:
> > +
> > +@lisp
> > +(push "\\`-[^-]*-monaco-bold-" face-ignored-fonts)
> > +@end lsip
> 
> I assume that customisation only affects Monaco, so it may be worth
> adding a "for example" or something to make it clear it's not supposed
> to fix it in all cases.
> 
> And perhaps it should go in etc/PROBLEMS instead of the manual?

Yes, probably.