[HarfBuzz] Support for Stylistic Sets

[Nikolay Sivov]

On Sat, Sep 14, 2019 at 4:54 PM Eli Zaretskii <eliz at gnu.org> wrote:

> Hi,
>
> AFAIU, HarfBuzz does support Stylistic Sets, but it is not clear to me
> what should an application do to request glyphs corresponding to a
> certain stylistic set.
>
> Suppose an application wants to display a text string using a specific
> stylistic set -- could someone please outline the sequence of API
> calls to get that, or point me to some documentation which describes
> that?
>

Hi, Eli.

I think it must be a matter of enabling features explicitly, in case you're
asking about it would be features ss01-ss20, see hb_shape() arguments
documentation.
Basically, you set hb_feature_t fields to appropriate tag, value (1 for
enabled), and start/end limits. That should do it.


>
> TIA
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