Fetches the glyph ID for a Unicode code point when followed by by the specified variation-selector code point, in the specified font.
#hb_font_t to work upon
The Unicode code point to query
The variation-selector code point to query
The glyph ID retrieved
true if data found, false otherwise
Fetches the glyph ID for a Unicode code point when followed by by the specified variation-selector code point, in the specified font.