anchor.diff:  ;;;;AUTHORS
   ;;;;    <PJB> Pascal J. Bourguignon <pjb@informatimago.com>
   ;;;;MODIFICATIONS
  +;;;;    2012-06-24 <PJB> Added REPLACE-SUBSEQ.
   ;;;;    2012-02-19 <PJB> Extracted from list.lisp and some other code.
   ;;;;BUGS
   ;;;;LEGAL
  
positive.code:    :key key :from-end from-end))
  
  
  ;;;; THE END ;;;;
  
negative.code:   (:use "COMMON-LISP")
    (:export "HASHED-SET-REMOVE-DUPLICATES"
             "HASHED-REMOVE-DUPLICATES" "HASHED-DELETE-DUPLICATES"
             "DUPLICATES"
             "REPLACE-SUBSEQ")
    (:documentation
     "
  
  