Actually, the previous change has no relevance. It suffices to add
self.font_name.set_sensitive(ConfigManager.get_conf('use-default-font'))
right after self.font_name was initialized in preferences.py init_ui method.
Actually, the previous change has no relevance. It suffices to add
self.font_ name.set_ sensitive( ConfigManager. get_conf( 'use-default- font'))
right after self.font_name was initialized in preferences.py init_ui method.