[Python-3000] More PEP 3101 changes incoming

[Greg Ewing]

Ron Adam wrote:
>     {0:d,10+20}      # Field width are just string operations done after
>                      # formatting is done.
> 
>     {0:d10+20}       # Numeric widths,  differ from field widths.
>                      # They are specific to the type so can handle special
>                      # cases.

Still not good - if you confuse two very similar and easily
confusable things, your numbers get chopped off.

I'm with Guido on this one: only strings should have
a max width, and it should be part of the string format
spec, so you can't accidentally apply it to numbers.

--
Greg