lasconic wrote
> The font should be the same.

Even with the same fonts, a different freetype version might be enough to
generate slightly different rasterizations.

> Any idea is welcome, but I would prefer to solve the root cause.

Yes, but it is important to detect (and then, if possible, solve) *real*
problems. For instance, a different order of the the same (commutative)
arithmetic operations may lead to different floating point rounding, which
might cause a different grid fitting and make the tests to fail; but there
might be no *real* (= evident to the eye) difference (no *real* layout
change).

Then, my feeling is that a way to have the kind of side-by-side image
comparisons as in the sample test run can be VERY useful to speed up the
check, but the final judge is better to be a human eye (and a human brain).

But this is just my opinion, of course!

Maurizio



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