r8420: document update-alist

diff --git a/lists.lisp b/lists.lisp
index 229bc91d6cc40d73bece0377d419db1d56a83ee4..3115dd5dbe1b99476baf576be214fe4353615686 100644 (file)
--- a/lists.lisp
+++ b/lists.lisp
@@ -157,12 +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)