Ticket #18976: 18976.patch

wp-admin/import.php

@@ -33 +33 @@
                 'movabletype' => array( __('Movable Type and TypePad'), __('Install the Movable Type importer to import posts and comments from a Movable Type or TypePad blog.'), 'install', 'mt' ),
                 'opml' => array( __('Blogroll'), __('Install the blogroll importer to import links in OPML format.'), 'install' ),
                 'rss' => array( __('RSS'), __('Install the RSS importer to import posts from an RSS feed.'), 'install' ),
+                'tumblr' => array( __('Tumblr'), __('Install the Tumblr importer to import posts from a Tumblr blog.'), 'install' ),
                 'wordpress' => array( 'WordPress', __('Install the WordPress importer to import posts, pages, comments, custom fields, categories, and tags from a WordPress export file.'), 'install' )
         );