cmd

type Command struct {
	Func        func(progname string, args []string)
	Help        string
	Usage       string
	Example     string
	Subcommands map[string]Command
	ArgValidate func(args []string) error
}

type CommandLineState struct {
	// The map of commands
	Commands map[string]Command

	// The function that returns the header (program name, version, etc.)
	GetHeader func() string
}