Spacing when typesetting $f:S \to T$

[ulthiel]

When I typeset $f:S \to T$ and view this in Safari the arrow is too close to T, same for $\mapsto$. In Chrome this looks fine, however. What is a bit strange now is that the same code in the nLab looks fine on Safari. Any ideas how to fix this?

[distler]

If I had to guess, what you are seeing is Safari's less-than-perfect MathML rendering. In particular, I think it's this bug. The nLab is using an outdated version of Instiki, which doesn't use Safari's native MathML rendering.

On balance, the advantages of the native rendering outway the disadvantages, but you should definitely report any MathML rendering bugs you encounter. That's the only way the Webkit people will be able to fixe them.

[ulthiel]

Yes, you're right, that's this bug probably. I'll post a follow-up.

[distler]

I believe this renders fine in the current Safari.