Function getMode

third-party/lua-5.5.0/src/lbaselib.c:342–347

static const char *getMode (lua_State *L, int idx) {
  const char *mode = luaL_optstring(L, idx, "bt");
  if (strchr(mode, 'B') != NULL)  /* Lua code cannot use fixed buffers */
    luaL_argerror(L, idx, "invalid mode");
  return mode;
}


static int luaB_loadfile (lua_State *L) {