This question already has an answer here:

Consider the following document:




This is the \emph{aaa} variable.\index{aaa variable@\emph{aaa} variable}

\emph{aaa}\index{aaa variable@\emph{aaa} variable}



In this document I use the index string \index{aaa variable@\emph{aaa} variable} twice, once outside a tabu environment, once inside it. The result is that the generated .idx file contains these lines:

\indexentry{aaa variable@\emph{aaa} variable}{1}
\indexentry{aaa variable@\emph  {aaa} variable}{1}

which means that \printindex will print two entries in the index, rather than just one.

What can I do?


A comment referred me to a related question where a \string in front of \emph in the tabu environment would solve the problem, and indeed it does.

But if I need to use the tabu* environment instead of tabu this still not works.

Replacing tabu with tabu* and \index{aaa variable@\emph{aaa} variable} with \index{aaa variable@\string\emph{aaa} variable} inside the environment, gives me this content in the .idx file:

\indexentry{aaa variable@\emph{aaa} variable}{1}
\indexentry{aaa variable@\string \emph {aaa} variable}{1}

marked as duplicate by David Carlisle, user13907, Andrew, Svend Tveskæg, moewe Apr 10 '15 at 11:02

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 1
    you can see (related) tex.stackexchange.com/questions/88354/… – touhami Apr 10 '15 at 7:51
  • Thank you, @touhami. The suggested fix works - sort of. I have updated my question. – oz1cz Apr 10 '15 at 8:12
  • 2
    I think the suggested solution in my answer (not egreg's:-) should work here – David Carlisle Apr 10 '15 at 8:21
  • Thank you, @DavidCarlisle. I did some experimentation, and for the tabu* environment it appears that I need to do both. I need to add \string and I need to use your \hmm command. Doing just one of them doesn't work. But now I have a solution - so what do I do with this question? If you turn your comment into an answer, I'll acknowledge it. – oz1cz Apr 10 '15 at 9:33
  • well it's probably a duplicate of the other question in that case, maybe you could leave a comment on one or both of the answers there. (It's the same issue and affects any use of \index inside the argument of a command, or inside the body of an environment that uses such a command internally (tabu, tabularx, ams alignments, ....) – David Carlisle Apr 10 '15 at 10:22

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