# bookmarksnumbered option of hyperref in beamer document

I wanted to put section numbers in pdf bookmarks of a beamer document. But section numbers didn't show up. What is the problem?

\documentclass{beamer}

\hypersetup{
bookmarksnumbered=true
}

\begin{document}

\section{Hello}

\begin{frame}Test\end{frame}

\section{Beamer}

\begin{frame}Test\end{frame}

\section{World}

\begin{frame}Test\end{frame}

\end{document}


I'm using MikTeX 2.9.

I would suggest that this is a bug in beamer because it does not follow the usual interface that hyperref hooks into. The following patch allows the bookmarksnumbered option to have an effect:

\documentclass{beamer}

\hypersetup{
bookmarksnumbered=true
}
% get numbering in section bookmarks
\usepackage{etoolbox}
\makeatletter
\patchcmd{\beamer@section}%
{\Hy@writebookmark{\the\c@section}{\secname}}%
{\Hy@writebookmark{\the\c@section}{\numberline{\thesection}\secname}}%
{}{\errmessage{failed to patch}}
\patchcmd{\beamer@subsection}%
{\Hy@writebookmark{\the\c@subsection}{#2}}%
{\Hy@writebookmark{\the\c@subsection}{\numberline{\thesection.\thesubsection}#2}}%
{}{\errmessage{failed to patch}}
\patchcmd{\beamer@subsubsection}%
{\Hy@writebookmark{\the\c@subsubsection}{#2}}%
{\Hy@writebookmark{\the\c@subsubsection}{\numberline{\thesection.\thesubsection.\thesubsubsection}#2}}%
{}{\errmessage{failed to patch}}
\makeatother

\begin{document}

\section{Hello}

\begin{frame}Test\end{frame}

\subsection{Goodybe}

\begin{frame}Test\end{frame}

\section{Beamer}

\begin{frame}Test\end{frame}

\section{World}

\begin{frame}Test\end{frame}

\end{document}