Index: content_views.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/cck/Attic/content_views.inc,v
retrieving revision 1.2.2.18
diff -u -u -p -r1.2.2.18 content_views.inc
--- content_views.inc	24 Mar 2008 16:47:46 -0000	1.2.2.18
+++ content_views.inc	13 Aug 2008 17:15:40 -0000
@@ -274,7 +274,13 @@ function content_views_argument_handler(
         default:
           $column_placeholder = "'%s'";
       }
-      $query->add_where($table .'.'. $main_column['column'] .' = '. $column_placeholder, $arg);
+      if (is_array($arg)) {
+        $placeholders = implode(',', array_fill(0, count($arg), $column_placeholder));
+        $query->add_where($table .'.'. $main_column['column'] .' IN ('. $placeholders .')', $arg);
+      }
+      else {
+        $query->add_where($table .'.'. $main_column['column'] .' = '. $column_placeholder, $arg);
+      }
       break;
 
     case 'link':