[nautilus] application: add an environment variable to debug no-app-menu scenarios

[Cosimo Cecchi <cosimoc src gnome org>]

commit 2b3359e97f323d5b59483b0845457275d7dc3d72
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Aug 7 20:13:12 2012 +0200

    application: add an environment variable to debug no-app-menu scenarios
    
    So that we can test under a stock environment the behavior when an app
    menu is not provided by the shell (since we have fallback code for such
    a case).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=681394

 src/nautilus-application.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-application.c b/src/nautilus-application.c
index 5bdc788..4676530 100644
--- a/src/nautilus-application.c
+++ b/src/nautilus-application.c
@@ -914,6 +914,7 @@ nautilus_application_init_actions (NautilusApplication *self)
 {
 	GtkBuilder *builder;
 	GError *error = NULL;
+	const gchar *debug_no_app_menu;
 
 	g_action_map_add_action_entries (G_ACTION_MAP (self),
 					 app_entries, G_N_ELEMENTS (app_entries),
@@ -932,6 +933,14 @@ nautilus_application_init_actions (NautilusApplication *self)
 	}
 
 	g_object_unref (builder);
+
+	debug_no_app_menu = g_getenv ("NAUTILUS_DEBUG_NO_APP_MENU");
+	if (debug_no_app_menu) {
+		DEBUG ("Disabling app menu GtkSetting as requested...");
+		g_object_set (gtk_settings_get_default (),
+			      "gtk-shell-shows-app-menu", FALSE,
+			      NULL);
+	}
 }
 
 static void