Add ToC to ToC with dotted leaders and page number while omitting them for every other entry

Question

Using scrbook.

I have removed leader dots and page number from all numbered chapters, so that only unnumbered ones have them (e.g. acknowledgement, abstracts, list of figures, list of tables, etc). I used in my preamble

\setkomafont{chapterentrypagenumber}{\nullfont}
\renewcommand\addchaptertocentry[2]{%
 \IfArgIsEmpty{#1}
  {\addtocontents{toc}
   {\protect\begingroup
    \protect\setkomafont{chapterentrypagenumber}{}%
    \protect\KOMAoptions{chapterentrydots}%
   }%
   \addtocentrydefault{chapter}{}{#2}%
   \addtocontents{toc}{\protect\endgroup}%
  }
  {\addtocentrydefault{chapter}{#1}{#2}}%
}

All is well until I am asked to have the ToC entry in the Table of Content, with leader dots and page number. Using \addcontentsline{toc}{chapter}{Table of Contents} puts ToC in Table of Contents without them---I assume because of above codes. I need the leader dot-less numbered chapters, but I also need the ToC entry with those leader dots and page number. Appreciate any help.

Answer 1

With scrbook use \setuptoc{toc}{totoc}. This command is provided by the KOMA-Script package tocbasic:

\documentclass{scrbook}

\setuptoc{toc}{totoc}

\setkomafont{chapterentrypagenumber}{\nullfont}
\renewcommand\addchaptertocentry[2]{%
  \IfArgIsEmpty{#1}
  {\addtocontents{toc}
    {\protect\begingroup
    \protect\setkomafont{chapterentrypagenumber}{}%
    \protect\KOMAoptions{chapterentrydots}%
    }%
    \addtocentrydefault{chapter}{}{#2}%
    \addtocontents{toc}{\protect\endgroup}%
  }
  {\addtocentrydefault{chapter}{#1}{#2}}%
}

\begin{document}
\tableofcontents
\chapter{Test}
\end{document}

Result:

---

With https://tex.stackexchange.com/a/391849/43317 and redefined \contentsname:

\documentclass[
  12pt,a4paper,
  chapterprefix=true,% chapterprefixline does the same
  headings=optiontoheadandtoc,
  oneside
]{scrbook}
\usepackage[a4paper,margin=1in]{geometry}
\usepackage{lipsum}
\usepackage[T1]{fontenc}% <- added
\usepackage{mathptmx}

\usepackage{xpatch}% needed to path \addchaptertocentry

% Style Table of Content.
\setuptoc{toc}{totoc}
\setkomafont{chapterentrypagenumber}{\nullfont}
\newcommand\chapterentrynumberformat[1]{\MakeUppercase\chapapp\ #1\kern 0.25em---\kern 0.25em}
\xpatchcmd{\addchaptertocentry}
  {\addtocentrydefault{chapter}{#1}{#2}}
  {\IfArgIsEmpty{#1}
    {\addtocontents{toc}
     {\protect\begingroup
      \protect\setkomafont{chapterentrypagenumber}{}%
      \protect\KOMAoptions{chapterentrydots}%
     }%
     \addtocentrydefault{chapter}{}{\MakeUppercase{#2}}%
     \addtocontents{toc}{\protect\endgroup}%
    }
    {\addtocentrydefault{chapter}{}{\protect\chapterentrynumberformat{#1}\MakeUppercase{#2}}}%
  }{}{\PatchFailed}
\renewcommand\contentsname{Table Of Contents}
%% Document Parts %%
\begin{document}
\frontmatter
\pagestyle{plain}
\tableofcontents
\addchap{ABSTRAK} % Abstract in language other than English
\lipsum[1]
\addchap[tocentry=\textit{ABSTRACT}]{ABSTRACT} % Abstract in English, must be shown italicised in ToC
\lipsum[2]
\mainmatter
\addchap{SOMESTUFFS}
\lipsum[3]
\chapter{FOO}
\section{Bar}
\lipsum[4]
\end{document}

Answer 2

Obviously you want to add the ToC as a ToC entry treating it typographically different which makes sense. Your guidelines how the formatting should be are biased however (in my opinion). Including the page number seems quite obscure to me.

However, your starting point was quite right. You need to include the entry manually: but not using \addcontentsline. This will employ the formatting used by every other ToC entry - which you are trying to avoid. There is a more general tool to add material to the ToC, i.e. write to the .toc file which is the similarly named \addtocontents command. You could use it like

\addtocontents{toc}{\textbf{\contentsname}\dotfill\thepage\par}

To ensure the right page numbering the page number should be fetched with \pageref and of course a \lable right before \tableofcontents. This can be done by patching the \tableofcontents macro in the preamble and leave the document body untouched - which is convenient anyways.

\makeatletter
\let\latex@tableofcontents\tableofcontents
\def\tableofcontents{%
  \label{chap:toc}%
  \latex@tableofcontents
  \addtocontents{toc}{%
    \bgroup\sffamily\textbf{\contentsname}\dotfill\pageref{chap:toc}\egroup\par
  }%
}
\makeatother

Note that I used \frontmatter and \mainmatter in the examples (see below). They ensure that page numbering is different in the front and main matter which makes more sense if you want to have a page number for the ToC-ToC-entry. If you need roman numbering throughout you can omit those commands.

Moreover you could now use the above soultion to create even a different formatting:

\documentclass{scrbook}
\usepackage[x11names]{xcolor}

\setkomafont{chapterentrypagenumber}{\nullfont}
\renewcommand\addchaptertocentry[2]{%
  \IfArgIsEmpty{#1}
  {\addtocontents{toc}
    {\protect\begingroup
    \protect\setkomafont{chapterentrypagenumber}{}%
    \protect\KOMAoptions{chapterentrydots}%
    }%
    \addtocentrydefault{chapter}{}{#2}%
    \addtocontents{toc}{\protect\endgroup}%
  }
  {\addtocentrydefault{chapter}{#1}{#2}}%
}

\makeatletter
\newcommand*\addspecialchaptertotoc[2][\thepage]{%
  \addtocontents{toc}{\vskip.25pc\bgroup{\color{Coral3}\MakeUppercase{#2}}\hfill#1\egroup\par}%
}
\let\latex@tableofcontents\tableofcontents
\def\tableofcontents{%
  \label{chap:toc}
  \latex@tableofcontents
  \addspecialchaptertotoc[\pageref{chap:toc}]{\contentsname}
}
\makeatother


\begin{document}
\frontmatter
\tableofcontents
\chapter*{Preface}\addspecialchaptertotoc{Preface}
\mainmatter
\chapter{Test chapter}
\section{First subsection}
\section{Second subsection}
\end{document}