X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=lists.lisp;h=6b0edb27b7550344f33ed1826fc70d4b531936cf;hb=d3a88acfecf83fc695ca7b6e247ec735c85625bf;hp=a7ae3d1655f197fd5142a335c0b093e2f91a3ec8;hpb=ca0dcaef675ae959bb83754254fb68cb5f0ec670;p=kmrcl.git

diff --git a/lists.lisp b/lists.lisp
index a7ae3d1..6b0edb2 100644
--- a/lists.lisp
+++ b/lists.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: lists.lisp,v 1.3 2003/05/06 01:43:14 kevin Exp $
+;;;; $Id: lists.lisp,v 1.4 2003/05/11 21:51:43 kevin Exp $
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -26,19 +26,15 @@
 (defun filter (fn lst)
   "Filter a list by function, eliminate elements where fn returns nil"
   (let ((acc nil))
-    (dolist (x lst)
+    (dolist (x lst (nreverse acc))
       (let ((val (funcall fn x)))
-        (if val (push val acc))))
-    (nreverse acc)))
+        (if val (push val acc))))))
 
 (defun appendnew (l1 l2)
   "Append two lists, filtering out elem from second list that are already in first list"
-  (dolist (elem l2)
+  (dolist (elem l2 l1)
     (unless (find elem l1)
-      (setq l1 (append l1 (list elem)))))
-  l1)
-
-
+      (setq l1 (append l1 (list elem))))))
 
 (defun remove-tree-if (pred tree)
   "Strip from tree of atoms that satistify predicate"
@@ -122,17 +118,13 @@
   (let ((a (car la))
 	(b (car lb)))
     (if (and a b)
-	(mapcar2-append-string 
-	 func 
-	 (cdr la) 
-	 (cdr lb)
-	 (concatenate 'string accum (funcall func a b)))
+	(mapcar2-append-string func (cdr la)  (cdr lb)
+			       (concatenate 'string accum (funcall func a b)))
       accum)))
 
 (defun append-sublists (list)
   "Takes a list of lists and appends all sublists"
   (let ((results (car list)))
-    (dolist (elem (cdr list))
-      (setq results (append results elem)))
-    results))
+    (dolist (elem (cdr list) results)
+      (setq results (append results elem)))))