Gettext fallbacks don't work with untranslated strings
问题 In source code of my application I wrapped with gettext strings in russian, so this is my default language and *.po files based on it. Now I need to make fallbacks chain - string that doesn’t translated in spanish catalog should be searched in english catalog and than if it doesn’t translated will be returned itself in russian . I trying to do this with add_fallback method, but untranslated strings in self._catalog of GNUTranslations(NullTranslations) already replaced with itself and ugettext