// The History interface provides a way to replace the default automatic
// 100 slots ringbuffer implementation.
type History interface {
	// Add will be called by Terminal to add a new line into the history.
	// An implementation may decide to not add every lines by ignoring calls
	// to this function (from Terminal.ReadLine) and to only add validated
	// entries out of band.
	Add(entry string)

	// At retrieves a line from history.
	// idx 0 should be the most recent entry.
	// return false when out of range.
	At(idx int) (string, bool)
}

// In terminal:

	// History allows to replace the default implementation of the history
	// which contains previously entered commands so that they can be
	// accessed with the up and down keys.
	// It's not safe to call ReadLine and methods on History concurrently.
	History History

// History returns a slice of strings containing the history of entered commands so far.
func (t *Terminal) History() []string {

// AddToHistory populates history.
func (t *Terminal) AddToHistory(commands ...string) {

// NewHistory resets the history to one of a given capacity.
func (t *Terminal) NewHistory(capacity int) {

// ReplaceLatest replaces the most recent history entry with the given string.
// Enables to add invalid commands to the history for editing purpose and
// replace them with the corrected version. Returns the replaced entry.
func (t *Terminal) ReplaceLatest(entry string) string {

// AutoHistory sets whether lines are automatically added to the history
// before being returned by ReadLine() or not. Defaults to true.
func (t *Terminal) AutoHistory(onOff bool) {