如何防止 LaTeX 在目录行的内容和页码之间留出太小的空间？

Question

如果内容行的长度有点长，但又不是太多，LaTeX 会将其挤在页码之前。这对我来说看起来很糟糕。

在这种情况下，我怎样才能说服它打破这条线，就好像这条线有点长并且挤不进去一样？

请注意，我的真实文档用途是etoc，我需要一个与该用法一致的解决方案。（我使用它来生成多个目录并灵活地淡化其中的部分内容。）

梅威瑟：

\documentclass[a4paper]{book}
\usepackage{geometry}
\begin{document}
\tableofcontents
\chapter{In the beginning}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the middle}
\setcounter{page}{50}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the end}
\setcounter{page}{100}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\end{document}

我无法想象以前没有人问过这个问题，但我没有找到一个好的解决方案。如何强制长章节名称（包括页码）保留在目录的边距中？担心同样的问题，但我已经加载了英国英语和威尔士语的连字模式，我正在使用 pdfLaTeX，但我不是使用 hyperref。因此，只剩下手动添加连字符点的解决方案，这远非最佳解决方案。评论中的另一个建议是缩短标题，但这不是这里的选项：我没有命名要包含的内容，也无法重新命名它。

有更好的解决方案吗？“更好”意味着解决方案是自动的（不需要在 LaTeX 知道如何在其他地方连字的单词中插入连字点）并且不需要重写内容以使其更短（或更长）。

Answer 1

首先，我想给你提供来自layouts包自述文件的内容结构。

然后您可以根据需要调整任何参数。对于您的问题，我们可以按如下方式调整值\@pnumwidth。\@tocrmarg

\documentclass[a4paper]{book}
\usepackage{geometry}
\makeatletter
\renewcommand\@pnumwidth{2.4em}
\renewcommand{\@tocrmarg}{2.4em}
%make sure that these two values are the same and then the titles
%on the right would break lines at one vertical lines.
\makeatother
\begin{document}
\tableofcontents
\chapter{In the beginning}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the middle}
\setcounter{page}{50}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the end}
\setcounter{page}{100}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\end{document}

PDF 是

Answer 2

标准类留出\@pnumwidth了页码的宽度，因此，如果你有很多页，你只需要增加它，

\documentclass[a4paper]{book}
\usepackage{geometry}
\makeatletter
\renewcommand\@pnumwidth{2.5em}
\renewcommand\@tocrmarg{2.5em}

\makeatother
\begin{document}
\tableofcontents
\chapter{In the beginning}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the middle}
\setcounter{page}{50}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the end}
\setcounter{page}{100}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\end{document}

Answer 3

您有\contentsmargin以下命令titletoc：

\documentclass[a4paper]{book}
\usepackage{titletoc, calc}
\usepackage[showframe]{geometry}
\contentsmargin{2pc}

\begin{document}

\tableofcontents
\chapter{In the beginning}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the middle}
\setcounter{page}{50}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}
\chapter{In the end}
\setcounter{page}{100}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos}
\section{The emptiness of nothingness and the blue ovoidness of avoiding voiding kangaroos and jumping counts}
\section{Counting kangaroos and jumping counts}

\end{document}