Ticket #6481: upgrade.diff

wp-admin/includes/upgrade.php

@@ -69 +69 @@
 
         wp_install_defaults($user_id);
 
-        $wp_rewrite->flush_rules();
+        $permalink_structure = '';
+        $cat_base = '';
+        $tag_base = '';
 
+        if ( got_mod_rewrite() && is_file(ABSPATH . '.htaccess') && is_writable(ABSPATH . '.htaccess') )
+        {
+                $permalink_structure = '/%year%/%monthnum%/%day%/%postname%/';
+        }
+
+        update_option('permalink_structure', $permalink_structure);
+        update_option('category_base', $cat_base);
+        update_option('tag_base', $tag_base);
+
+        $GLOBALS['wp_rewrite'] =& new WP_Rewrite();
+        $GLOBALS['wp_rewrite']->flush_rules();
+        
+
         wp_new_blog_notification($blog_title, $guessurl, $user_id, $random_password);
 
         wp_cache_flush();