OK, I added support for negative numbers to my ElfDataTokeniser demo.
And I added support for "spaces".

So now you can do stuff like this:

"2*a / -c"

Or even " m * c * c " (formula for energy ;))

I COULD release a new ElfData plugin today. But I'll wait until
Sunday :)

I just want to be SURE it's a good design. I'll do some work on
AngelCog now :)

AngelCog will use my ElfDataTokeniser class for it's own language. So
in fact doing my own project will help improve the ElfDataTokeniser
class in case anyone is will use it for their own project.