I am using lhs2TeX to convert code into LaTeX. It typesets code into math mode. As I am also writing math formulas in the same document, I use unicode-math to switch between different math mode fonts ...
How does one activate a stylistic set in plain XeTeX? I have tried: \font\test="XITS Math:+ss01" % for calligraphic \textfont2=\test $ \fam2 A $ \bye but with no luck.
LuaTeX ignores mathematical italic correction by default, as noted by Khaled Hosny. This leads to some awful errors when using some alphabet which is very slanted, like XITS' mathematical script ...