Index: modules/node/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.module,v
retrieving revision 1.822
diff -u -p -r1.822 node.module
--- modules/node/node.module	31 May 2007 12:14:04 -0000	1.822
+++ modules/node/node.module	31 May 2007 21:37:28 -0000
@@ -529,11 +529,8 @@ function node_invoke_nodeapi(&$node, $op
   foreach (module_implements('nodeapi') as $name) {
     $function = $name .'_nodeapi';
     $result = $function($node, $op, $a3, $a4);
-    if (isset($result) && is_array($result)) {
-      $return = array_merge($return, $result);
-    }
-    else if (isset($result)) {
-      $return[] = $result;
+    if (isset($result)) {
+      $return[$name] = $result;
     }
   }
   return $return;