Function luaL_checklstring

lib/lua/src/lauxlib.c:405–409

LUALIB_API const char *luaL_checklstring (lua_State *L, int arg, size_t *len) {
  const char *s = lua_tolstring(L, arg, len);
  if (l_unlikely(!s)) tag_error(L, arg, LUA_TSTRING);
  return s;
}


LUALIB_API const char *luaL_optlstring (lua_State *L, int arg,