r3629: *** empty log message ***

[kmrcl.git] / genutils.lisp

diff --git a/genutils.lisp b/genutils.lisp
index 04678e6aeeb2cc23a032256fff845e2f0b300930..4565089ddd7f66baba8742dfacddf828e2046531 100644 (file)
--- a/genutils.lisp
+++ b/genutils.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: genutils.lisp,v 1.12 2002/12/13 21:59:57 kevin Exp $
+;;;; $Id: genutils.lisp,v 1.13 2002/12/14 18:51:53 kevin Exp $
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -156,6 +156,12 @@
         (if val (push val acc))))
     (nreverse acc)))
 
+(defun appendnew (l1 l2)
+  "Append two lists, filtering out elem from second list that are already in first list"
+  (dolist (elem l2)
+    (unless (find elem l1)
+      (setq l1 (append l1 (list elem)))))
+  l1)
 
 ;; Functions