[HarfBuzz] Create glyph overview based on a specific font feature

[Rolf Langenhuijzen]

I'm looking into ways of creating an overview of glyphs that fall into a specific OT feature of a font.
Eg. an image with all swsh related glyphs, or only ligatures.

I'm not programming in C/C++, so I'm probably limited into what I can use form Harfbuzz initially to get the needed data of a font.
I was hoping that was a tool out there that would export glyph ids for example based on some OT feature in a font that I could use to feed into hb-view.

Any thoughts?

Kind regards,
Rolf