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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz
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Date: Fri, 22 May 2020 17:30:44 +0300
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> Cc: alan@idiocy.org, emacs-devel@gnu.org
> From: Clément Pit-Claudel <cpitclaudel@gmail.com>
> Date: Fri, 22 May 2020 09:29:57 -0400
> 
> > Do font designers really support ligatures from
> > any arbitrary combination of characters?  If so, where can I read
> > about this?
> 
> Yes; that's what I was alluding to in my example with comment signs and arrows.  I think the pictures on https://github.com/tonsky/FiraCode should be illuminating.
> 
> I hope I'm not misunderstanding your question :/

I was talking about ligatures made from letters, not symbols.