map is:exact -package:vector -package:containers -package:basement -package:aeson -package:invertible -package:base-compat-batteries -package:dlist -package:base-prelude -package:hedgehog -package:foldl -package:ghc -package:pipes -package:incipit-base package:charset

map :: (Char -> Char) -> CharSet -> CharSet
charset Data.CharSet