map -package:containers -package:base -package:insert-ordered-containers -package:basement -package:case-insensitive -package:ghc -package:base-compat-batteries -package:incipit-base -package:base-prelude -package:blaze-html -is:exact -package:psqueues package:charset

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