map -package:containers -package:base-compat -package:basement -package:integration -package:psqueues -package:bytestring -package:filepath -package:base-compat-batteries -package:case-insensitive -package:insert-ordered-containers -package:base -package:invertible -package:pipes package:charset

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