map -package:containers -package:bytestring -package:dlist -package:base-prelude -package:invertible -package:psqueues -package:base is:exact -package:filepath -package:foldl -package:incipit-base -package:case-insensitive -package:monoidal-containers -package:dense-linear-algebra -package:regex-tdfa package:charset

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