我在其他关于目录的问题中搜索了有关水平线和间距的信息，但无法重现我想要的内容。此外，我还收到一些 badbox 调整目录中的水平间距。
当使用 tocnumwidth 为子部分插入水平空间时，我得到的是未满的 \hbox。有人知道如何摆脱 badboxes 吗？
\RedeclareSectionCommands[tocnumwidth=10pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin]{subsection,subsubsection}
此外，我想知道如何在章节、节和小节下插入水平线来设置目录样式？
以下是我的完整 MWE。提前致谢！
\documentclass{scrreprt}
\usepackage[
includemp,
showframe,
reversemp,
paperwidth=20.1cm,
paperheight=25.80cm,
top=2.30cm,
bottom=3.4cm,
inner=2.7cm,
outer=2.7cm,
marginparwidth=1.6cm, % Fixed for now
marginparsep=0.4cm
]{geometry}
\usepackage{etoolbox} %control vspave in ToC
\usepackage{lipsum}
\usepackage[footwidth=textwithmarginpar]{scrlayer-scrpage}
% \usepackage{tocstyle}
\makeatletter % to set the marginpar on the left side in showframe
\let\Gm@vrules@mpi\Gm@vrules@mpii
\makeatother
%-------------------- CHAPTER HEADINGS and TOC -----------
\renewcommand*{\chapterformat}{\intoleftmargin{\chapappifchapterprefix{\
}\thechapter\autodot}}%
\renewcommand*{\sectionformat}{\intoleftmargin{\thesection\autodot}}
\renewcommand*{\subsectionformat}{\intoleftmargin{\thesubsection\autodot}}
\renewcommand*{\subsubsectionformat}
{\intoleftmargin{\thesubsubsection\autodot}}
% remove the vertical skip before the chapter heading
\RedeclareSectionCommand[beforeskip=-1sp plus -1sp minus 1sp]{chapter}
\RedeclareSectionCommands[tocnumwidth=0pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin]{chapter,section}
\RedeclareSectionCommands[tocnumwidth=10pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin]{subsection,subsubsection}
\newcommand*{\intoleftmargin}[1]{\makebox[0pt][r]{#1\hskip\marginparsep}}
\makeatletter
\renewcommand{\@dotsep}{10000}
\makeatother
\makeatletter
\pretocmd{\chapter}{\addtocontents{toc}{\protect\addvspace{15\p@}}}{}{}
\pretocmd{\section}{\addtocontents{toc}{\protect\addvspace{5\p@}}}{}{}
\pretocmd{\subsection}{\addtocontents{toc}{\protect\addvspace{2\p@}}}{}{}
\makeatother
%---------------------------------------------------------
%---------------------------PAGE STYLE--------------------
\clearpairofpagestyles
\automark{chapter}
\ifoot{%
\makebox[0pt][r]{\pagemark\autodot\hskip\marginparsep}%
\ifodd \value{page}%
Quantifying goodness of morphodynamic field predictions
\else
\headmark %
\fi
}
\setkomafont{pageheadfoot}{\normalfont}
\renewcommand\chaptermarkformat{}
\renewcommand*\chapterpagestyle{scrheadings}
%---------------------------------------------------------
\begin{document}
\tableofcontents
\chapter{chapter}
\section{section}
\section{section}
\section{section}
\subsection{subsection}
\chapter{chapter}
\section{section}
\subsection{subsection}
\chapter{chapter}
\section{section}
\subsection{subsection}
\chapter*{section}
\addcontentsline{toc}{section}{section}
\end{document}
答案1
下面的操作按照你的要求进行（但我不知道这是否是正确的方法，也不知道这是否是正确的做法）：
\documentclass{scrreprt}
% packages>>>
\usepackage[%>>>geometry
includemp,
showframe,
reversemp,
paperwidth=20.1cm,
paperheight=25.80cm,
top=2.30cm,
bottom=3.4cm,
inner=2.7cm,
outer=2.7cm,
marginparwidth=1.6cm, % Fixed for now
marginparsep=0.4cm
]{geometry}%<<<
\usepackage{etoolbox} %control vspave in ToC
\usepackage{lipsum}
\usepackage[footwidth=textwithmarginpar]{scrlayer-scrpage}
% \usepackage{tocstyle}
%<<<
\makeatletter % to set the marginpar on the left side in showframe
\let\Gm@vrules@mpi\Gm@vrules@mpii
\makeatother
%-------------------- CHAPTER HEADINGS and TOC ----------->>>
\renewcommand*{\chapterformat}{\intoleftmargin{\chapappifchapterprefix{\
}\thechapter\autodot}}%
\renewcommand*{\sectionformat}{\intoleftmargin{\thesection\autodot}}
\renewcommand*{\subsectionformat}{\intoleftmargin{\thesubsection\autodot}}
\renewcommand*{\subsubsectionformat}
{\intoleftmargin{\thesubsubsection\autodot}}
% remove the vertical skip before the chapter heading
\RedeclareSectionCommand[beforeskip=-1sp plus -1sp minus 1sp]{chapter}
\RedeclareSectionCommands[tocnumwidth=0pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin,tocentryformat=\lineundertocchap]{chapter}
\RedeclareSectionCommands[tocnumwidth=0pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin,tocentryformat=\lineundertocsec]{section}
\RedeclareSectionCommands[tocnumwidth=10pt,tocindent=0pt,tocentrynumberformat=\intoleftmargin,tocentryformat=\lineundertocsec]{subsection,subsubsection}
\newcommand*{\intoleftmargin}[1]{\makebox[0pt][r]{#1\hskip\marginparsep}\hfill}
\newcommand*{\lineundertocsec}[1]{%
\ifunderlinetoc%
\raisebox{-4pt}{\makebox[0pt][l]{\rule{\linewidth}{0.5pt}}}%
\fi#1}
\newcommand*{\lineundertocchap}[1]{%
\ifunderlinetoc%
\raisebox{-4pt}{\makebox[0pt][l]{\rule{\linewidth}{1pt}}}%
\fi\sffamily\bfseries#1}
\newif\ifunderlinetoc\underlinetoctrue
\makeatletter
\renewcommand{\@dotsep}{10000}
\makeatother
\makeatletter
\pretocmd{\chapter}{\addtocontents{toc}{\protect\addvspace{15\p@}}}{}{}
\pretocmd{\section}{\addtocontents{toc}{\protect\addvspace{5\p@}}}{}{}
\pretocmd{\subsection}{\addtocontents{toc}{\protect\addvspace{2\p@}}}{}{}
\makeatother
%---------------------------------------------------------<<<
%---------------------------PAGE STYLE-------------------->>>
\clearpairofpagestyles
\automark{chapter}
\ifoot{%
\makebox[0pt][r]{\pagemark\autodot\hskip\marginparsep}%
\ifodd \value{page}%
Quantifying goodness of morphodynamic field predictions
\else
\headmark %
\fi
}
\setkomafont{pageheadfoot}{\normalfont}
\renewcommand\chaptermarkformat{}
\renewcommand*\chapterpagestyle{scrheadings}
%---------------------------------------------------------<<<
\begin{document}
\tableofcontents
\addtocontents{toc}{\protect\underlinetocfalse}
\chapter{chapter}
\addtocontents{toc}{\protect\underlinetoctrue}
\section{section}
\section{section}
\section{section}
\subsection{subsection}
\subsubsection{subsection}
\chapter{chapter}
\section{section}
\subsection{subsection}
\subsubsection{subsection}
\chapter{chapter}
\section{section}
\subsection{subsection}
\subsubsection{subsection}
\chapter*{section}
\addcontentsline{toc}{section}{section}
\end{document}
