Hello, I already reported this problem a week ago, but maybe the message got lost. The following latex-file produces wrong spacing when compiled with xelatex, but proper spacing when compiled with lualatex.
\documentclass{article}
\usepackage{fontspec}
\setmainfont{CMU Serif}
\usepackage[math-style=upright,vargreek-shape=TeX]{unicode-math}
\setmathfont{Neo Euler}
\begin{document}
\[ \sum_{i=1}^n \ldots\]
\end{document}
The result with xelatex looks as follows:
sumxelatex.pdf
Description: Adobe PDF document
while the result with lualatex look as follows:
sumlualatex.pdf
Description: Adobe PDF document
The obvious workaround, namely to use lualatex, is not good for me. I am actively using the input-mapping feature of xetex for editing a cyrillic (serbian) book that is written in latinica. Does anybody have an idea, what is going on, and how I can circumvent the problem in xelatex? Many thanks, Christian
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