luaL_optlstring  5846 host/minilua.c static const char* luaL_optlstring(lua_State*L,int numArg,
luaL_optlstring  5856 host/minilua.c #define luaL_optstring(L,n,d)(luaL_optlstring(L,(n),(d),NULL))
luaL_optlstring  6505 host/minilua.c const char*sep=luaL_optlstring(L,2,"",&lsep);
luaL_optlstring    36 lauxlib.h      LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
luaL_optlstring   104 lauxlib.h      #define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))