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The problem with these languages is that they make words longer by putting things at the end of the words.

I have been reading this but not sure its support for the given languages.

How can you make the index based for instance on Estonion or Finnish text?

Community
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Léo Léopold Hertz 준영
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    The biggest problem I see is in correctly sorting the entries, which is not supported by MakeIndex, but is by Xindy. Can you make some examples about what your problem? – egreg Mar 26 '13 at 23:22

1 Answers1

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Xindy supports both Finnish and Estonian. You didn't provide example, so there is one, assuming that you use utf8 encoding:

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[finnish]{babel}
\usepackage[utf8]{inputenc}
\usepackage[texindy]{imakeidx}
\makeindex
\begin{document}
Hello world
\index{jällivaara}
\index{porvoo}
\index{kirjakieltä}
\index{sanota}
\index{vanhaa}
\printindex
\end{document} 

Index words are random words from wikipedia, I have no idea what they mean.

Index can be processed with command:

texindy -M lang/finnish/utf8 -L finnish  finnish.idx

For Estonian, it would be

texindy -M lang/estonian/utf8  -L estonian finnish.idx

Correct way would be to call xindy with 

texindy -C utf8 -L finnish finish.idx

option -C means input encoding. But it seems there is a bug and the compilation fails with error message. So you need to directly load the module for encoding with lang/finnish/utf8.

As Egreg said, you can alternatively run texindy directly from pdflatex if you modify

\makeindex

to 

\makeindex[options={-M lang/finnish/utf8 -L finnish}]

and call 

pdflatex --shell-escape finnish.tex

to call texindy automatically.

michal.h21
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    You can also write \makeindex[options={-M lang/finnish/utf8 -L finnish}] and run pdflatex with the option -shell-escape enabled; but imakeidx should be loaded with the texindy option. – egreg Mar 27 '13 at 09:24
  • This is an excellent answer! Thank you very much! I had problems in generating indexes that takes also the words with endings there. – Léo Léopold Hertz 준영 Mar 27 '13 at 19:12