Re: Supporting stylistic sets

[Eli Zaretskii]

> From: Visuwesh <visuweshm@gmail.com>
> Cc: समीर सिंह Sameer Singh
>  <lumarzeli30@gmail.com>,  emacs-devel@gnu.org
> Date: Fri, 23 Sep 2022 23:56:58 +0530
> 
> [வெள்ளி செப்டம்பர் 23, 2022] Eli Zaretskii wrote:
> 
> >> I imagined that it would be something like this:
> >> 
> >>   (set-fontset-font t 'bengali
> >>    (font-spec :family "Tiro Bangla"
> >>       :stylistic-set '("ss03")))
> >> 
> >>   (set-face-attribute 'default nil
> >>      :font "Fira Code"
> >>      :weight 'regular
> >>      :height 170
> >>      :stylistic-set '("cv01" "ss05" "ss03"))
> >> 
> >> Just like how weight, foundry, size etc are set and they seem to be font 
> >> properties.
> >
> > That means all text that uses the font will use that stylistic-set.
> > Is that good enough?  What if you want to have the same font with and
> > without a specific stylistic-set in the same document?.
> 
> Unless there are performance implications, I don't see why using an
> anonymous face won't work i.e., 
> 
>     (propertize "text" '(face (:stylistic-set ("cv01" ..)))

How is this different or better than having a special text property?