Wrong TOC Formatting when using \numberwithin{section}{part}

Question

When I use the command \numberwithin{section}{part} the table of contents formatting gets destroyed.

A minimal working example is the following:

\documentclass[a4paper,12pt]{scrartcl}
\usepackage{amsmath}
\numberwithin{section}{part}
\begin{document}
\tableofcontents{}
\newpage
\part{First PArt}
\section{First Section}
\section{Next Section}
\subsection{abc}
\subsection{ABC}
\part{Second PArt}
\section{The third Section}
\section{And another Section}
\subsection{This is an example}
\subsection{Example ;-)}
\part{Third Part}
\section{Wrong formatting}
\section{Another Section}
\section{Test Section}
\subsection{xyz}
\subsection{XYZ}
\end{document}

This yields the following table of contents: (I compile with Lualatex, if that is relevant)

As one can see the space between the numbering and the title of the sections is wrong and in case of Part 3 even overlaps.

How can I fix this?

This might help: How to modify the space between the numbers and text of sectioning titles in the table of contents? (potential duplicate) Also this: Roman numerals become “too wide” in table of contents — barbara beeton, Dec 06 '22 at 19:26

score 1 · Accepted Answer · answered Dec 06 '22 at 10:16

You can use (without \numberwithin{section}{part})

\RedeclareSectionCommand[tocdynnumwidth]{part}
\RedeclareSectionCommand[counterwithin=part,tocdynnumwidth]{section}
\RedeclareSectionCommands[tocdynnumwidth,tocdynindent]
  {subsection,subsubsection,paragraph,subparagraph}

Example:

\documentclass[a4paper,12pt]{scrartcl}
\RedeclareSectionCommand[tocdynnumwidth]{part}
\RedeclareSectionCommand[counterwithin=part,tocdynnumwidth]{section}
\RedeclareSectionCommands[tocdynnumwidth,tocdynindent]
  {subsection,subsubsection,paragraph,subparagraph}
\begin{document}
\tableofcontents{}
\clearpage
\part{First PArt}
\section{First Section}
\section{Next Section}
\subsection{abc}
\subsection{ABC}
\part{Second PArt}
\section{The third Section}
\section{And another Section}
\subsection{This is an example}
\subsection{Example ;-)}
\part{Third Part}
\section{Wrong formatting}
\section{Another Section}
\section{Test Section}
\subsection{xyz}
\subsection{XYZ}
\end{document}

Run three times to get

score 1 · Answer 2 · answered Dec 06 '22 at 19:05

1

Use the tocloft package.

...
\usepackage{tocloft}
\addtolength{\cftsecnumwidth}{2em} % or other length

which will increase the space for the section number.

answered Dec 06 '22 at 19:05

Peter Wilson

28,066

Wrong TOC Formatting when using \numberwithin{section}{part}

2 Answers2