Man pages matching name replace_extension in section 3alleg4:

replace_extension.3alleg4.en	debian 10 / allegro4-doc
replace_extension.3alleg4.en	debian 11 / allegro4-doc
replace_extension.3alleg4.en	debian 12 / allegro4-doc
replace_extension.3alleg4.en	debian 13 / allegro4-doc