(library (rnrs unicode (6))
  (export char-upcase char-downcase char-titlecase char-foldcase
          char-ci=? char-ci<? char-ci>? char-ci<=? char-ci>=?
          char-alphabetic? char-numeric? char-whitespace? char-upper-case? char-lower-case? char-title-case?
          char-general-category
          string-upcase string-downcase string-titlecase string-foldcase
          string-ci=? string-ci<? string-ci>? string-ci<=? string-ci>=?
          string-normalize-nfd  string-normalize-nfkd string-normalize-nfc string-normalize-nfkc)
  (import (core unicode)))
