map is:exact -package:bytestring -package:ghc -package:case-insensitive -package:containers -package:dlist -package:base-compat-batteries -package:incipit-base -package:monoidal-containers -package:filepath -package:os-string -package:psqueues -package:pipes -package:conduit package:charset

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