Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) @ Pike (-) developers forum wrote:

...

sprintf("%3.3f", Gmp.mpq(1,3));

(1) Result: "0.333"

...

sprintf("%3.3f", Gmp.mpq(2,3));

(2) Result: ".666"

Ok, I can see that seems a bit wrong.

Could we please make it a habit to test our code at least once before pushing it? K thx bye...

I tested it, of course. But the circumstances where it goes wrong are elusive. The test I performed before committing it turned out to be flawed, which I noticed shortly thereafter when I performed more tests.

I now have a mildly better understanding of the problem, and am confident that the new fix is right, which is not to say that there might be a better fix, but for that one would need to understand a larger part of the code first.