[luatex] Bug in LuaTeX regarding Math Kerning

[Hans Hagen]

On 6/7/2016 4:09 PM, Ulrike Fischer wrote:
> Am Tue, 7 Jun 2016 15:17:56 +0200 schrieb Mathias Schickel:
>
>>> I did not test Windows or MikTeX and I have tested various OpenType
>>> fonts and all of them showed up the same behavior.
>
> I can confirm the problem for windows and miktex. And this context
> example (from a minimals of today) has wrong kerning too:
>
> \starttext
> \startformula F_j = \int\nolimits_a^b \stopformula
> \stoptext
>
>
> It is perhaps related to this discussion:
>
> https://mailman.ntg.nl/pipermail/ntg-context/2016/085765.html

It has to do with the fact that only a few fonts currently provide math 
kerns (cambria does, as does lucida). The lm fonts use a mixture of
(old school) fake width + italics to do kerning, and pagella has none of 
it. The next version of the gyre/lm fonts will be fixed in this respect. 
So, some patience is needed.

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
       tel: 038 477 53 69 | www.pragma-ade.com | www.pragma-pod.nl
-----------------------------------------------------------------