rline

type IO interface {
	// Next returns the next line of runes (excluding '\n') from the input.
	Next() ([]rune, error)
	// Close closes the IO.
	Close() error
	// Stdout is the IO's standard out.
	Stdout() io.Writer
	// Stderr is the IO's standard error out.
	Stderr() io.Writer
	// Interactive determines if the IO is an interactive terminal.
	Interactive() bool
	// Cygwin determines if the IO is a Cygwin interactive terminal.
	Cygwin() bool
	// Prompt sets the prompt for the next interactive line read.
	Prompt(string)
	// Completer sets the auto-completer.
	Completer(readline.AutoCompleter)
	// Save saves a line of history.
	Save(string) error
	// Password prompts for a password.
	Password(string) (string, error)
	// SetOutput sets the output filter func.
	SetOutput(func(string) string)
}

type Rline struct {
	Inst *readline.Instance
	N    func() ([]rune, error)
	C    func() error
	Out  io.Writer
	Err  io.Writer
	Int  bool
	Cyg  bool
	P    func(string)
	A    func(readline.AutoCompleter)
	S    func(string) error
	Pw   func(string) (string, error)
}