Hello,
using fonts with additional letter spacing does not seem to work in
display formulae. (Not sure whether it's a bug in luatex or whether I
should report it to luaotfload instead.)
Example (LuaHBTeX, Version 1.15.0):
\documentclass{minimal}
\begin{document}
\font\f="DejaVuSerif-Italic:letterspace=20.0" at 10pt
\f
% these work as expected
\hfill abcdefxyz\hfill\hbox{}
\hfill$\textfont1=\f abcdefxyz$\hfill\hbox{}
\hfill$\textfont1=\f\displaystyle abcdefxyz$\hfill\hbox{}
% these don't
$$\textfont1=\f abcdefxyz$$
$$\textfont1=\f\textstyle abcdefxyz$$
\end{document}
Am I missing something?
Achim
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