diff -Nru unity-gtk-module-0.0.0+14.04.20140311/debian/changelog unity-gtk-module-0.0.0+14.04.20140319/debian/changelog
--- unity-gtk-module-0.0.0+14.04.20140311/debian/changelog	2014-03-19 09:08:12.000000000 +0000
+++ unity-gtk-module-0.0.0+14.04.20140319/debian/changelog	2014-03-19 09:08:12.000000000 +0000
@@ -1,3 +1,10 @@
+unity-gtk-module (0.0.0+14.04.20140319-0ubuntu1) trusty; urgency=low
+
+  [ William Hua ]
+  * Watch use-underline property on GtkMenuItems. (LP: #1260777)
+
+ -- Ubuntu daily release <ps-jenkins@lists.canonical.com>  Wed, 19 Mar 2014 09:04:02 +0000
+
 unity-gtk-module (0.0.0+14.04.20140311-0ubuntu1) trusty; urgency=low
 
   [ CI bot ]
diff -Nru unity-gtk-module-0.0.0+14.04.20140311/lib/unity-gtk-menu-item.c unity-gtk-module-0.0.0+14.04.20140319/lib/unity-gtk-menu-item.c
--- unity-gtk-module-0.0.0+14.04.20140311/lib/unity-gtk-menu-item.c	2014-03-11 12:37:57.000000000 +0000
+++ unity-gtk-module-0.0.0+14.04.20140319/lib/unity-gtk-menu-item.c	2014-03-19 09:03:53.000000000 +0000
@@ -525,6 +525,41 @@
   return NULL;
 }
 
+static gchar *
+g_strdup_escape_underscores (const gchar *str)
+{
+  if (str != NULL)
+    {
+      gchar *string;
+      gchar *out;
+      const gchar *in;
+      guint underscores;
+
+      underscores = 0;
+
+      for (in = strchr (str, '_'); in != NULL; in = strchr (in + 1, '_'))
+        underscores++;
+
+      if (underscores == 0)
+        return g_strdup (str);
+
+      string = g_malloc (strlen (str) + underscores + 1);
+      out = string;
+
+      for (in = str; *in != '\0'; in++)
+        {
+          *out++ = *in;
+
+          if (*in == '_')
+            *out++ = '_';
+        }
+
+      return string;
+    }
+
+  return NULL;
+}
+
 const gchar *
 unity_gtk_menu_item_get_label (UnityGtkMenuItem *item)
 {
@@ -556,10 +591,15 @@
 
       if (label != NULL && label[0] != '\0')
         {
-          if (item->parent_shell == NULL || item->parent_shell->has_mnemonics)
-            item->label = g_strdup (label);
+          if (gtk_menu_item_get_use_underline (item->menu_item))
+            {
+              if (item->parent_shell == NULL || item->parent_shell->has_mnemonics)
+                item->label = g_strdup (label);
+              else
+                item->label = g_strdup_no_mnemonics (label);
+            }
           else
-            item->label = g_strdup_no_mnemonics (label);
+            item->label = g_strdup_escape_underscores (label);
         }
     }
 
diff -Nru unity-gtk-module-0.0.0+14.04.20140311/lib/unity-gtk-menu-shell.c unity-gtk-module-0.0.0+14.04.20140319/lib/unity-gtk-menu-shell.c
--- unity-gtk-module-0.0.0+14.04.20140311/lib/unity-gtk-menu-shell.c	2014-03-11 12:37:57.000000000 +0000
+++ unity-gtk-module-0.0.0+14.04.20140319/lib/unity-gtk-menu-shell.c	2014-03-19 09:03:53.000000000 +0000
@@ -456,6 +456,13 @@
 }
 
 static void
+unity_gtk_menu_shell_handle_item_use_underline (UnityGtkMenuShell *shell,
+                                                UnityGtkMenuItem  *item)
+{
+  unity_gtk_menu_shell_handle_item_label (shell, item);
+}
+
+static void
 unity_gtk_menu_shell_handle_item_accel_path (UnityGtkMenuShell *shell,
                                              UnityGtkMenuItem  *item)
 {
@@ -979,6 +986,7 @@
   static const gchar *visible_name;
   static const gchar *sensitive_name;
   static const gchar *label_name;
+  static const gchar *use_underline_name;
   static const gchar *accel_path_name;
   static const gchar *active_name;
   static const gchar *parent_name;
@@ -995,6 +1003,8 @@
     sensitive_name = g_intern_static_string ("sensitive");
   if (label_name == NULL)
     label_name = g_intern_static_string ("label");
+  if (use_underline_name == NULL)
+    use_underline_name = g_intern_static_string ("use-underline");
   if (accel_path_name == NULL)
     accel_path_name = g_intern_static_string ("accel-path");
   if (active_name == NULL)
@@ -1015,6 +1025,8 @@
     unity_gtk_menu_shell_handle_item_sensitive (shell, item);
   else if (name == label_name)
     unity_gtk_menu_shell_handle_item_label (shell, item);
+  else if (name == use_underline_name)
+    unity_gtk_menu_shell_handle_item_use_underline (shell, item);
   else if (name == accel_path_name)
     unity_gtk_menu_shell_handle_item_accel_path (shell, item);
   else if (name == active_name)