luaL_optstring   6352 host/minilua.c const char*chunkname=luaL_optstring(L,2,s);
luaL_optstring   6356 host/minilua.c const char*fname=luaL_optstring(L,1,NULL);
luaL_optstring   6362 host/minilua.c return luaL_error(L,"%s",luaL_optstring(L,2,"assertion failed!"));
luaL_optstring   6697 host/minilua.c const char*mode=luaL_optstring(L,2,"r");
luaL_optstring    115 lib_debug.c      const char *options = luaL_optstring(L, arg+2, "flnSu");
luaL_optstring     48 lib_os.c         const char *cmd = luaL_optstring(L, 1, NULL);
luaL_optstring    170 lib_os.c         const char *s = luaL_optstring(L, 1, "%c");
luaL_optstring    308 lib_package.c  				luaL_optstring(L, 3, "."),
luaL_optstring    309 lib_package.c  				luaL_optstring(L, 4, LUA_DIRSEP));