Function harfbuzz_sys::hb_font_glyph_from_string

pub unsafe extern "C" fn hb_font_glyph_from_string(
    font: *mut hb_font_t, 
    s: *const c_char, 
    len: c_int, 
    glyph: *mut hb_codepoint_t
) -> hb_bool_t