Man pages matching name al_keycode_to_name in section 3alleg5:

al_keycode_to_name.3alleg5.en	debian 10 / allegro5-doc
al_keycode_to_name.3alleg5.en	debian 11 / allegro5-doc
al_keycode_to_name.3alleg5.en	debian 12 / allegro5-doc