anchor.diff:  
       AGPL3
       
  -    Copyright Pascal J. Bourguignon 2003 - 2012
  +    Copyright Pascal J. Bourguignon 2003 - 2013
       
       This program is free software: you can redistribute it and/or modify
       it under the terms of the GNU Affero General Public License as published by
  
positive.code: 
  "))
  (in-package "COM.INFORMATIMAGO.COMMON-LISP.CESARUM.LIST")
  
  
  (defun ensure-list (item)
  
negative.code: (in-package "COMMON-LISP-USER")
  (defpackage "COM.INFORMATIMAGO.COMMON-LISP.CESARUM.LIST"
    (:use "COMMON-LISP")
    (:export
     "PREPENDF"  "PUSH*"
     "DLL-NEXT" "DLL-PREVIOUS" "DLL-NODE" "LIST-TO-DOUBLE-LINKED-LIST"
     "EQUIVALENCE-CLASSES" "SUBSETS" "COMBINE" "IOTA"
     "MAKE-LIST-OF-RANDOM-NUMBERS" "LIST-INSERT-SEPARATOR"
     "NSPLIT-LIST-ON-INDICATOR" "NSPLIT-LIST" "DEEPEST-REC" "DEEPEST" "DEPTH"
     "FLATTEN" "LIST-TRIM" "TRANSPOSE" "AGET" "MEMQ"
     "PLIST-KEYS" "PLIST-REMOVE" "PLIST-GET"
     "PLIST-PUT" "PLIST-CLEANUP" "HASHED-INTERSECTION" 
     ;; "HASHED-REMOVE-DUPLICATES" moved to COM.INFORMATIMAGO.COMMON-LISP.CESARUM.SEQUENCE
     "ENSURE-LIST" "PROPER-LIST-P" "LIST-LENGTHS" "LIST-ELEMENTS"
     "ENSURE-CIRCULAR" "MAKE-CIRCULAR-LIST" "CIRCULAR-LENGTH"
     "TREE-FIND" "TREE-DIFFERENCE" "REPLACE-TREE" "MAPTREE")
    (:documentation
     "
  This package exports list processing functions.
  