map -package:containers -package:bytestring -package:invertible -package:basement -package:regex-tdfa -package:blaze-html -package:base -package:case-insensitive -package:ghc -package:base-compat -package:imports -package:monoidal-containers -package:incipit-base package:charset

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