Error message with fix 01e2af0

[tom75de]

Hello,

I use the patch 01e2af0 committed by Joseph Wright on 2015-03-13 to correct the hyperlinks for (sub)sections.

In my example, I get an error message "Argument of \@gobble has an extra }.":

\documentclass{beamer}
\usepackage{etoolbox}
\makeatletter
\patchcmd{\beamer@section}
  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
  {\edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}
  {}{}
\patchcmd{\beamer@subsection}
  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
  {\edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}
  {}{}
\makeatother
\usetheme{AnnArbor} 
\begin{document}
\section{\texorpdfstring{$\operatorname{e}$-Funktion}{e-Funktion}}
\begin{frame}{$\operatorname{e}$-Funktion}
  $\operatorname{e}$-Funktion
\end{frame}
\subsection{Subsection 1}
\begin{frame}{Subsection 1}
  Subsection 1 Frame 1
\end{frame}
\begin{frame}{Subsection 1}
  Subsection 1 Frame 2
\end{frame}
\end{document}

With the original code, the example worked as it shoud but the navigation didn't work properly. Is there a solution to get my example running?

Regards,
Tom

[Mark Yagnatinsky]

Try asking on tex.stackexchange.com. They have wizards there.

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[Mark Yagnatinsky]

Here's a workaround though: just use \section{e-Funktion}. As far as
I can tell, it typesets the same way anyway.

[tom75]

 Thanks for your workaround, I think that's the solution for my current presentation.

Do you know if there's a general solution for this, or does this behavior only happen with \operatorname ?

I already asked on tex.stackexchange.com but didn't get any answer.

[tom75]

I got an answer on texwelt. Using \protected@edef instead of \edef solves the problem

\usepackage{etoolbox}
\makeatletter
\patchcmd{\beamer@section}
  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}

  {\protected@edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}

  {}{}
\patchcmd{\beamer@subsection}
  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}

  {\protected@edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}
  {}{}
\makeatother