Subtract value for word/character count

[Pavel Sanda]

On Mon, Mar 25, 2024 at 06:35:16PM +0100, Jean-Marc Lasgouttes wrote:
> Actually, I am not sure how it helps. Knowing that you need to remove 140
> words is not useful in itself.

The idea is that I set the difference value to the current count and
I am aiming for -140.

Which brings me to even simpler UI than I previously thought.
Instead of entering some values as an argument I could simply
have lfun that sets the difference to the current statistics
value and be done with it.

Very easy to maintain as a separate patch of lfun even if ppl
do not like it. So in any case thanks for the feedback :)

Pavel