static const char *formatvarinfo (lua_State *L, const char *kind,
                                                const char *name) {
  if (kind == NULL)
    return "";  /* no information */
  else
    return luaO_pushfstring(L, " (%s '%s')", kind, name);
}
static const char *formatvarinfo (lua_State *L, const char *kind,
                                                const char *name) {
  if (kind == NULL)
    return "";   
  else
    return luaO_pushfstring(L, " (%s '%s')", kind, name);
}