[Nickle] printf/scanf for rationals?

[Keith Packard]

On Sat, 2005-12-24 at 01:46 -0800, Bart Massey wrote:
> Unfortunately, the output of printf("%.-g", 1/3) is
> 0.{3}, which can't be read back in by current scanf() at all
> (as near as I can tell).  I think it probably *should*...

A trivial fix; the code just needed to allow for {} in the general
number format.

-keith

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