Not just auto completion but interactive auto completion coming from a list of options. This is what I did for one of my projects - you get a vertical list of a

Not just auto completion but interactive auto completion coming from a list of options. This is what I did for one of my projects - you get a vertical list of all possible inputs (within reason of course) which is narrowed down as you type. You could use the arrows to navigate if you're not inclined to type - arrows - tab - arrows - tab would build a complete command sequence.