Man pages matching name joystick_button_info in section 3alleg4:

JOYSTICK_BUTTON_INFO.3alleg4.en	debian 10 / allegro4-doc
JOYSTICK_BUTTON_INFO.3alleg4.en	debian 11 / allegro4-doc
JOYSTICK_BUTTON_INFO.3alleg4.en	debian 12 / allegro4-doc