func doPromptLine(rl *readline.Instance, prompt string, hide bool) (string, error) {
var line = ""
var bytepwd []byte
var err error
if hide {
bytepwd, err = rl.ReadPassword(prompt)
line = string(bytepwd)
} else {
line, err = rl.Readline()
}
if err != nil {
return "", err
}
return line, nil
}
