map is:exact -package:text -package:basement -package:integration -package:incipit-base -package:dlist -package:base -package:containers -package:bytestring -package:aeson -package:psqueues -package:regex-tdfa -package:conduit -package:case-insensitive package:charset

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