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I am struggling with idxlayout for generating a formatted index (my intent is to be able to group all subentries in one paragraph). Here is a minimal example:

\documentclass[12pt]{article}
\usepackage{makeidx}
\makeindex

\usepackage{idxlayout}

\begin{document}

\tableofcontents

\section{Test}

Test\index{test}

\printindex

\end{document}

When I compile it

$ latex $docname
$ makeindex $idxfile
$ latex $docname

the last command fails with this error (and other subsequent errors):

! Undefined control sequence.
\theindex ...umnnote}{}{\ila@prenote }}\ifnumcomp 
                                              {\theidxcols }{<}{\tw@ }{\...
l.1 \begin{theindex}

If I ignore the errors, I get a document with two indices (the first one is empty) and there are some symbols appearing around the second index (namely "2¡Θ" and "2¡Θ").

Could you help? Thanks in advance!

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  • Can you look in the .log file for the version number and release date of etoolbox.sty?
    – egreg
    Commented Dec 3, 2014 at 13:18
  • I get no problem if I compile the file.
    – user31729
    Commented Dec 3, 2014 at 13:19
  • According to the documentation, \ifnumcomp has been added to etoolbox in version 1.8, released 2009-08-06.
    – egreg
    Commented Dec 3, 2014 at 13:24
  • OK, that was the problem: my version was outdated (2008). I have updated etoolbox.sty and everything works fine now. Many thanks!
    – mzi
    Commented Dec 3, 2014 at 13:34
  • 1
    @mzi: You should update your whole TeX distribution, not just one package -- if some of your packages are from 2008, their might occur more inconsistencies
    – user31729
    Commented Dec 3, 2014 at 13:42

1 Answer 1

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3

Update your TeX distribution: the \ifnumcomp macro has been added to etoolbox in version 1.8, released 2009-08-06.

Note that just updating the package doesn't guarantee everything works, so it's better to upgrade the whole distribution.

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