Thanks Hans!
Your suggestion does partially solve the problem, but it seems that `\mfunction` internally called `\rm` to set upright Roman font in math mode. Does achieving the same effects (text-like kerning) for italics and bold style still requires custom fonts? It depends on the font. A proper opentype math font should have at least
On 10/1/2019 6:52 PM, Shuxian Wang wrote: the basic latin characters for test and these then if needed will have kerns and such. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------