This example was using invalid attribute syntax.
* GtkBuilder *builder = gtk_builder_new_from_string (
* "<interface>"
* " <menu id='menubar'>"
- * " <submenu label='_Edit'>"
- * " <item label='_Copy' action='win.copy'/>"
- * " <item label='_Paste' action='win.paste'/>"
+ * " <submenu>"
+ * " <attribute name='label' translatable='yes'>_Edit</attribute>"
+ * " <item>"
+ * " <attribute name='label' translatable='yes'>_Copy</attribute>"
+ * " <attribute name='action'>win.copy</attribute>"
+ * " </item>"
+ * " <item>"
+ * " <attribute name='label' translatable='yes'>_Paste</attribute>"
+ * " <attribute name='action'>win.paste</attribute>"
+ * " </item>"
* " </submenu>"
* " </menu>"
* "</interface>",