Problem with spacing around \int with minionint (MinionPro)

[yoblanco]

If I write

\documentclass{scrartcl}
\usepackage{MinionPro}
\begin{document}
\[ \int_a^b f(x) \, dx \]
\end{document}

I spaces good the \int_a^b, but if I use \usepackage[minionint]{MinionPro}, then the same code doesn't space well (the a is too far from the bottom of the integral).

EDIT:

And, in order to fix it I have to manually put \int_{\:\!\!a}^b every time. As you can see that small space make it look good.

[sebschub]

I can reproduce the issue. Changing it would be the first actually visible change of the original MinionPro package (with MinionPro of course). I'll have a look, though.

[yoblanco]

Mmm, I'm not sure at all. If, instead of a and b you use i and j you don't need to kern the i (in fact it looks bad). So it depends on the letters. Just take a look, but after trying (and realizing that it depends of the letters), I'm not sure it is worth it.

EDIT: After two minutes of trying, for example, I think that the letters a, c, e,… need a bit of kerning. But other letters, like m or i doesn't. You will decide if it's really worth it.

[sebschub]

Thank you for the comment. For now, I'll stick to the original, but I'll leave this open as a reminder.