map -package:containers -package:basement -package:psqueues -package:Cabal-syntax -package:base -package:insert-ordered-containers -package:monoidal-containers -is:exact -package:regex-tdfa -is:exact -package:case-insensitive -package:base-prelude -package:text -package:unordered-containers -package:filepath -package:pipes package:charset

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