static gboolean
_g_dgettext_should_translate (void)
{
  static gsize translate = 0;
  enum {
    SHOULD_TRANSLATE = 1,
    SHOULD_NOT_TRANSLATE = 2
  };

  if (G_UNLIKELY (g_once_init_enter (&translate)))
    {
      gboolean should_translate = TRUE;

      const char *default_domain     = textdomain (NULL);
      const char *translator_comment = gettext ("");
#ifndef G_OS_WIN32
      const char *translate_locale   = setlocale (LC_MESSAGES, NULL);
#else
      const char *translate_locale   = g_win32_getlocale ();
#endif
      /* We should NOT translate only if all the following hold:
       *   - user has called textdomain() and set textdomain to non-default
       *   - default domain has no translations
       *   - locale does not start with "en_" and is not "C"
       *
       * Rationale:
       *   - If text domain is still the default domain, maybe user calls
       *     it later. Continue with old behavior of translating.
       *   - If locale starts with "en_", we can continue using the
       *     translations even if the app doesn't have translations for
       *     this locale.  That is, en_UK and en_CA for example.
       *   - If locale is "C", maybe user calls setlocale(LC_ALL,"") later.
       *     Continue with old behavior of translating.
       */
      if (!default_domain || !translator_comment || !translate_locale ||
          (0 != strcmp (default_domain, "messages") &&
          '\0' == *translator_comment &&
          0 != strncmp (translate_locale, "en_", 3) &&
          0 != strcmp (translate_locale, "C")))
        should_translate = FALSE;

      g_once_init_leave (&translate,
                         should_translate ?
                         SHOULD_TRANSLATE :
                         SHOULD_NOT_TRANSLATE);
    }

  return translate == SHOULD_TRANSLATE;
}