This is a follow up on How to use xindy with XeTeX/LuaTeX?.
When I use this MWE
\documentclass{article}
\usepackage{fontspec}
\usepackage{makeidx}
\makeindex
\begin{document}
Umlaut Ä\index{Ä}
\printindex
\end{document}
with this commands
xelatex file.tex
xindy -M texindy -C utf8 file.idx
xelatex file.tex
the use of xindy shows this error:
*** - PROGN: variable TEXINDY.XDY has no value
-L german-dudenand-C utf8to my own style file to shorten the command toxindy -M mystyle file.idx. – Tobi Jun 17 '14 at 09:27