anchor.diff:  ;;; Function member-if-not
   
   (defun member-if-not-identity (predicate list)
  -  (with-proper-list-rests (rest list member-if-not)
  +  (with-proper-list-rests (rest list 'member-if-not)
       (unless (funcall predicate (car rest))
         (return rest))))
   
   (defun member-if-not-key (predicate list key)
  -  (with-proper-list-rests (rest list member-if-not)
  +  (with-proper-list-rests (rest list 'member-if-not)
       (unless (funcall predicate (funcall key (car rest)))
         (return rest))))
   
  
positive.code: 
  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  ;;;
  ;;; Function member
  
  (defmacro with-proper-list-rests ((rest-var list function-name) &body body)
    (let ((list-var (gensym)))
  
negative.code: 	(if test
  	    (cond ((or (eq test #'eq) (eq test 'eq))
  		   (if use-hash
  		       (intersection-key-eq-hash 'nintersection list1 list2 key)
  		       (intersection-key-eq 'nintersection list1 list2 key)))
  		  ((or (eq test #'eql) (eq test 'eql))
  		   (if use-hash
  		       (intersection-key-eql-hash 'nintersection list1 list2 key)
  		       (intersection-key-eql 'nintersection list1 list2 key)))
  		  ((or (eq test #'equal) (eq test 'equal))
  		   (if use-hash
  		       (intersection-key-equal-hash 'nintersection list1 list2 key)
  		       (intersection-key-test 'nintersection list1 list2 key #'equal)))
  		  ((or (eq test #'equalp) (eq test 'equalp))
  		   (if use-hash
  		       (intersection-key-equalp-hash 'nintersection list1 list2 key)
  		       (intersection-key-test 'nintersection list1 list2 key #'equalp)))
  		  (t
  		   (intersection-key-test 'nintersection list1 list2 key test)))
  	    (if test-not
  		(intersection-key-test-not 'nintersection list1 list2 key test-not)
  		(if use-hash
  		    (intersection-key-eql-hash 'nintersection list1 list2 key)
  		    (intersection-key-eql 'nintersection list1 list2 key))))
  	(if test
  	    (cond ((or (eq test #'eq) (eq test 'eq))
  		   (if use-hash
  		       (intersection-identity-eq-hash 'nintersection list1 list2)
  		       (intersection-identity-eq 'nintersection list1 list2)))
  		  ((or (eq test #'eql) (eq test 'eql))
  		   (if use-hash
  		       (intersection-identity-eql-hash 'nintersection list1 list2)
  		       (intersection-identity-eql 'nintersection list1 list2)))
  		  ((or (eq test #'equal) (eq test 'equal))
  		   (if use-hash
  		       (intersection-identity-equal-hash 'nintersection list1 list2)
  		       (intersection-identity-test 'nintersection list1 list2 #'equal)))
  		  ((or (eq test #'equalp) (eq test 'equalp))
  		   (if use-hash
  		       (intersection-identity-equalp-hash 'nintersection list1 list2)
  		       (intersection-identity-test 'nintersection list1 list2 #'equalp)))
  		  (t
  		   (intersection-identity-test 'nintersection list1 list2 test)))
  	    (if test-not
  		(intersection-identity-test-not 'nintersection list1 list2 test-not)
  		(if use-hash
  		    (intersection-identity-eql-hash 'nintersection list1 list2)
  		    (intersection-identity-eql 'nintersection list1 list2)))))))
  
  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  ;;;
  