}
	args.Language = lang

	tmpl := template.Must(template.New("README").Parse(readmeTmpl[1:]))
	buf := new(bytes.Buffer)
	if err := tmpl.Execute(buf, args); err != nil {
		t.Fatal(err)
	}

	const readmePath = "testdata/script/README"
	old, err := os.ReadFile(readmePath)
	if err != nil {
		t.Fatal(err)
	}
	diff := diff.Diff(readmePath, old, "readmeTmpl", buf.Bytes())
	if diff == nil {
		t.Logf("%s is up to date.", readmePath)