Function isUsageError

help.go:136–150

XXX: this is a hack to detect usage errors. See: https://github.com/spf13/cobra/pull/2266

(err error)

// XXX: this is a hack to detect usage errors.
// See: https://github.com/spf13/cobra/pull/2266
func isUsageError(err error) bool {
	s := err.Error()
	for _, prefix := range []string{
		"flag needs an argument:",
		"unknown flag:",
		"unknown shorthand flag:",
		"unknown command",
		"invalid argument",
	} {
		if strings.HasPrefix(s, prefix) {
			return true
		}
	}
	return false
}

func writeLongShort(w *colorprofile.Writer, styles Styles, longShort string) {
	if longShort == "" {