X-Git-Url: http://git.kpe.io/?p=kmrcl.git;a=blobdiff_plain;f=lists.lisp;h=3115dd5dbe1b99476baf576be214fe4353615686;hp=35e74ba3482236cf8dd4f01cfc6948de66e273bd;hb=526eef1b59e071cbb4ecd35f73a14c1a3f8e32b6;hpb=eb3a19183eef0273cb4bec74259f98802fb141f0

diff --git a/lists.lisp b/lists.lisp
index 35e74ba..3115dd5 100644
--- a/lists.lisp
+++ b/lists.lisp
@@ -42,13 +42,15 @@
     (unless (find elem l1)
       (setq l1 (append l1 (list elem))))))
 
-(defun remove-from-tree-if (pred tree)
+(defun remove-from-tree-if (pred tree &optional atom-processor)
   "Strip from tree of atoms that satistify predicate"
   (if (atom tree)
       (unless (funcall pred tree)
-	tree)
-    (let ((car-strip (remove-from-tree-if pred (car tree)))
-	  (cdr-strip (remove-from-tree-if pred (cdr tree))))
+	(if atom-processor
+	    (funcall atom-processor tree)
+	  tree))
+    (let ((car-strip (remove-from-tree-if pred (car tree) atom-processor))
+	  (cdr-strip (remove-from-tree-if pred (cdr tree) atom-processor)))
       (cond
        ((and car-strip (atom (cadr tree)) (null cdr-strip))
 	(list car-strip))
@@ -155,12 +157,13 @@
 	   (progn
 	     (setf (cdr ,elem) ,value)
 	     ,alist)
-	(setf ,alist (acons ,akey ,value ,alist))))))
+	 (setf ,alist (acons ,akey ,value ,alist))))))
 
 (defun get-alist (key alist &key (test #'eql))
   (cdr (assoc key alist :test test)))
 
 (defun (setf get-alist) (value key alist &key (test #'eql))
+  "This doesn't work to add a field which alist value is only modified locally"
   (update-alist key value alist :test test)
   value)