A callback method for #hb_buffer_t. The method gets called with the
#hb_buffer_t it was set on, the #hb_font_t the buffer is shaped with and a
message describing what step of the shaping process will be performed.
Returning false from this method will skip this shaping step and move to
the next one.
A callback method for #hb_buffer_t. The method gets called with the #hb_buffer_t it was set on, the #hb_font_t the buffer is shaped with and a message describing what step of the shaping process will be performed. Returning false from this method will skip this shaping step and move to the next one.