gnome-session/gnome-session-wm-switch.patch

--- gnome-session-2.23.4.1-pre/gnome-session/session.c	2008-06-17 08:24:45.000000000 -0500
+++ gnome-session-2.23.4.1-work/gnome-session/session.c	2008-07-20 22:32:00.000000000 -0500
@@ -347,6 +347,8 @@ append_legacy_session_apps (GsmSession *
 {
   GKeyFile *saved;
   int num_clients, i;
+  gchar *compiz_enable_path;
+  gboolean compiz_enabled = FALSE;
 
   saved = g_key_file_new ();
   if (!g_key_file_load_from_file (saved, session_filename, 0, NULL))
@@ -356,12 +358,33 @@ append_legacy_session_apps (GsmSession *
       return;
     }
 
+  /* See if compiz is enabled; if it is, we have to replace legacy metacity/compiz
+   * entries with gnome-wm */
+  compiz_enable_path = g_build_filename (g_get_user_config_dir (), "compiz", "enable-compiz", NULL);
+  compiz_enabled = compiz_enable_path && g_file_test (compiz_enable_path, G_FILE_TEST_IS_REGULAR);
+  g_free (compiz_enable_path);
+
   num_clients = g_key_file_get_integer (saved, "Default", "num_clients", NULL);
   for (i = 0; i < num_clients; i++)
     {
       GsmApp *app = gsm_app_resumed_new_from_legacy_session (saved, i);
       if (app)
+      {
+        GsmAppResumed *app_resumed = (GsmAppResumed *) app;
+
+        /* Maybe replace legacy metacity/compiz with gnome-wm */
+        if (app_resumed->restart_command &&
+            (((!strcmp (app_resumed->restart_command, "metacity") ||
+               !strcmp (app_resumed->restart_command, "/usr/bin/metacity")) && compiz_enabled) ||
+             (!strcmp (app_resumed->restart_command, "compiz") ||
+              !strcmp (app_resumed->restart_command, "/usr/bin/compiz"))))
+        {
+          g_free (app_resumed->restart_command);
+          app_resumed->restart_command = g_strdup ("gnome-wm");
+        }
+
 	append_app (session, app);
+      }
     }
 
   g_key_file_free (saved);