On Thu, Dec 12, 2013 at 9:58 PM, Marc Bennewitz <[email protected]>wrote:
> Hi
>
> Decrementing "a" to a number isn't a good idea because on incrementing
> again you will increment the number and not go back to "a".
>
Why not just have "a" decrement to an empty string (i.e. "") and an empty
string increment to "a"? Then a decrement on an empty string could trigger
a warning and remain empty. That way, we won't have situations where
decrementing from "a" and incrementing back would output a number.
--Kris