[HarfBuzz] Support for Stylistic Sets

[Eli Zaretskii]

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?

TIA