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Re: otf ligature rendering support?

From: Eli Zaretskii
Subject: Re: otf ligature rendering support?
Date: Fri, 02 Jan 2015 17:45:09 +0200

> From: Yuri D'Elia <>
> Date: Fri, 02 Jan 2015 16:32:31 +0100
> I'm not fully aware of how much otf is supported in emacs, but I found a
> good reason to want ligatures in a monospaced font:
> PragmataPro supports ligatures for a good set of common operators. This
> makes it much less troublesome than "prettify-symbols-mode" since
> indentation/spacing is not changed.
> How would I enable the proper GSUB feature in emacs? Are ligatures
> supported at all?
> I can specify otf parameters in `font-spec', but the following:
> (set-fontset-font nil 'latin
>                 (font-spec :family "PragmataPro"
>                            :otf '(latn nil (liga))))
> Doesn't really show any ligatures (or any other otf feature).
> Am I doing something wrong?

I think you need to define rules for composing characters into
ligatures, in order to have what you want.

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