map is:exact -package:bytestring -package:dlist -package:blaze-html -package:imports -package:containers -package:base-compat-batteries -package:basement -package:base-compat -package:monoidal-containers -package:insert-ordered-containers -package:aeson -package:os-string package:charset

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