Ticket #3374: 3374_2.patch

_source/plugins/indent/plugin.js

@@ -235 +235 @@
                         var bookmarks = selection.createBookmarks( true ),
                                 nearestListBlock = range.getCommonAncestor();
 
-                        while ( !( nearestListBlock.type == CKEDITOR.NODE_ELEMENT && 
-                                listNodeNames[ nearestListBlock.getName() ] ) )
+                        while ( nearestListBlock )
+                        {
+                                if ( nearestListBlock.type == CKEDITOR.NODE_ELEMENT && listNodeNames[ nearestListBlock.getName() ] )
+                                        break;
                                 nearestListBlock = nearestListBlock.getParent();
+                        }
 
                         if ( nearestListBlock )
                                 indentList.call( this, editor, range, nearestListBlock );