GitLab

(composition_compute_stop_pos): Set cmp_it->lookback.
(composition_reseat_it): Check lookback count.
(struct position_record): New struct.
(FORWARD_CHAR, BACKWARD_CHAR, CHAR_COMPOSABLE_P): New macros.
(find_automatic_composition): New function.
(composition_adjust_point): Use find_automatic_composition.