I presume you mean the font in the editor window, other widgets should
respond to the GTK CSS.

But as the editor window has differing styling per syntactic element
recognised for each programming language supported, standard GTK CSS
just won't cut it.

The editor widget is from the Scintilla project (www.scintilla.org)
and does not appear to support font features AFAICT
(https://www.scintilla.org/ScintillaDoc.html) so neither does Geany.

But the GTK library used by Scintilla does appear to  support them
https://docs.gtk.org/Pango/type_func.AttrFontFeatures.new.html.  You
would need to raise a request on the Scintilla project for it to be
added there before support can be added in Geany.

Cheers
Lex

On Fri, 2 Sept 2022 at 18:47, Guido Falsi via Users
<[email protected]> wrote:
>
> Hi,
>
> I was testing some new fonts (especially FiraCode [1] and Cascadia-Code
> [2]).
>
> As you may know these fonts allow changing their appearance with some
> variants by defining Stylistic Sets through some configuration, like
> indicated in [3], for example
>
> Does geany support defining such settings in some way?
>
> I tried to leverage GTK3 CSS via geany.css, adding something like this:
>
> ```
> notebook stack widget>widget {
>          font-feature-settings: "ss19";
> }
> ```
>
> I checked through `env GTK_DEBUG=interactive geany` that the css is
> actually seen by the running software and app[lied to the document
> container in the UI, but it looks like it's not affecting the font.
>
> (ss19 in Cascadia-Code should give barred zero in place of dotted zero,
> was just one simple change I used for testing. I could use any other of
> the supported variants)
>
> My selector choice was naive, though, so maybe that's the problem.
>
> Do you have any indication or this is unsupported and would require
> software changes?
>
>
> Thanks in advance.
>
>
>
> [1] https://github.com/tonsky/FiraCode
>
> [2] https://github.com/microsoft/cascadia-code
>
> [3] https://github.com/tonsky/FiraCode/wiki/How-to-enable-stylistic-sets
>
>
> --
> Guido Falsi <[email protected]>
> _______________________________________________
> Users mailing list -- [email protected]
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