A virtual method for the #hb_unicode_funcs_t structure.
This method should compose a sequence of two input Unicode code
points by canonical equivalence, returning the composed code
point in a #hb_codepoint_t output parameter (if successful).
The method must return an #hb_bool_t indicating the success
of the composition.
A virtual method for the #hb_unicode_funcs_t structure.
This method should compose a sequence of two input Unicode code points by canonical equivalence, returning the composed code point in a #hb_codepoint_t output parameter (if successful). The method must return an #hb_bool_t indicating the success of the composition.