// ansi coloring on dumb terminals.
	IsTerminal = func() bool {
		return !color.NoColor
	}

	Bold = func() func(format string, a ...interface{}) string {
		if IsTerminal() {
			return color.New(color.Bold).SprintfFunc()
		}
		return fmt.Sprintf
	}()

	RedBold = func() func(a ...interface{}) string {
		if IsTerminal() {
			return color.New(color.FgRed, color.Bold).SprintFunc()
		}

	if runtime.GOOS == "windows" {
		return
	}
	if color.IsTerminal() {
		ansiEscape("[%dC", n)
	}
}

func ansiSaveAttributes() {
	if runtime.GOOS == "windows" {
		return
	}
	if color.IsTerminal() {
		ansiEscape("7")
	}
}

func ansiRestoreAttributes() {
	if runtime.GOOS == "windows" {
		return
	}
	if color.IsTerminal() {
		ansiEscape("8")
	}
}

	apiEndpointStr := strings.TrimSpace(strings.Join(apiEndpoints, "  "))
	// Colorize the message and print.
	logger.Info(color.Blue("API: ") + color.Bold(fmt.Sprintf("%s ", apiEndpointStr)))
	if color.IsTerminal() && (!globalServerCtxt.Anonymous && !globalServerCtxt.JSON && globalAPIConfig.permitRootAccess()) {
		logger.Info(color.Blue("   RootUser: ") + color.Bold("%s ", cred.AccessKey))

	return "\033[0m"
}

func IstioctlColorDefault(writer io.Writer) bool {
	if strings.EqualFold(termEnvVar.Get(), "dumb") {
		return false
	}

	file, ok := writer.(*os.File)
	if ok {
		if !isatty.IsTerminal(file.Fd()) {
			return false
		}
	}

	return true

	var readers []local.ReaderSource
	for _, f := range args {
		var r *os.File

		// Handle "-" as stdin as a special case.
		if f == "-" {
			if isatty.IsTerminal(os.Stdin.Fd()) && !isJSONorYAMLOutputFormat() {
				fmt.Fprint(cmd.OutOrStdout(), "Reading from stdin:\n")
			}
			r = os.Stdin
			readers = append(readers, local.ReaderSource{Name: f, Reader: r})
			continue
		}