[HarfBuzz] Ligatures

[Eli Zaretskii]

> From: Khaled Hosny <dr.khaled.hosny at gmail.com>
> Date: Sat, 23 May 2020 09:51:21 +0200
> Cc: harfbuzz at lists.freedesktop.org
> 
> > Thanks.  Since (b) is not really feasible without redesigning the
> > entire Emacs display engine (for which I see no volunteers lining up
> > any time soon), I guess we will have to use some more-or-less
> > reasonable and somewhat unreliable heuristics by supporting only some
> > ligatures that are known in advance.
> 
> What are you going to do about kerning, or mark positioning? Partially kerning arbitrary glyphs (because the sub string match some regular expression) is worse than not kerning at all.

I don't think I understand the question.  How is kerning related to
the issue at hand?  I'm not an expert on typesetting text (so maybe I
don't even understand what exactly is meant by "kerning" in this
context), so please tell more details about this.

Thanks.