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I try to build an index in two columns at the end of my slides. To do so, I use the definitions from Create index entries in beamer with 2 columns (latex-community.org):

\documentclass{beamer} 
\usepackage{makeidx} 
\makeindex 
\newenvironment{theindex} 
 {\let\item\par %definitions for subitem etc 
 }{} 
\newcommand\indexspace{} 

\begin{document} 

\begin{frame}{test 1} 
\index{Laplace}Laplace transform is... \LaTeXe\ can make you happy! 
\index{Test} 
\end{frame} 

\begin{frame}{test 2} 
\printindex \end{frame} 
\end{document}

However, sometimes the index entry including the page numbers fits in one line, but nevertheless LaTeX makes an empty line after the entry. It looks pretty ugly... What can I do to avoid the empty lines?

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Welcome to TeX.sx! Please add a minimal working example (MWE) that illustrates your problem. – lockstep Mar 18 '12 at 17:50
Also note that you don't have to sign with your name since it automatically appears in the lower right corner of your post. – lockstep Mar 18 '12 at 17:51
It looks fine with me. Please, run 1) pdflatex, 2) pdflatex again, 3) makeindex, and post the contents of .idx and .ind files. – tohecz Mar 18 '12 at 18:10

closed as too localized by Marco Daniel, egreg, lockstep, Joseph Wright♦ Apr 14 '12 at 22:09

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