[Tex/LaTex] program that allows to move sections and automatically adjusts the level of subsections

sectioning

How would one go about to move a [sub..]section to a different position in the document structure?
The sectioning commands would have to be changed according to the new parent level.
Is there a program that does that? An editor via drag and drop?
A cli call like this should do it (given that the section numbering is default):

texsectionmove main.tex 3.2 root

Best Answer

As I interpret it, None is asking for something that looks like a directory structure: we can move folders (sections/subsections...) around in an arbitrary way, and LaTeX should know whether to put \section, \subsection, or whatever else. A partial solution, that works well with copying and pasting within the document is to use a section-like environment instead of just a macro.

\documentclass{article}

\makeatletter
\newcounter{section@depth}
\setcounter{section@depth}{0}

\newenvironment{deepsection}{%
  \addtocounter{section@depth}{1}%
  \ifcase\c@section@depth 
  \expandafter \part
  \or \expandafter \section
  \or \expandafter \subsection
  \or \expandafter \subsubsection
  \or \expandafter \paragraph
  \or \expandafter \subparagraph
  \else 
  \PackageError{deepsections}{%
    Sections are too deeply nested.%
  }{%
    Trying to recover with \string\subparagraph%
  }%
  \expandafter \subparagraph
  \fi
}{%
  \addtocounter{section@depth}{-1}%
}

\makeatother

\begin{document}
\tableofcontents
\begin{deepsection}{First section's title}  
  This text is inside the first section
  \begin{deepsection}[Short title]{And the title for a subsection}
    Some more text.
    \begin{deepsection}*{Unnumbered subsubsection}
      Yet some more text
    \end{deepsection}
    \begin{deepsection}{Other subsubsection}
      This subsubsection is numbered now.
    \end{deepsection}
  \end{deepsection}
\end{deepsection}

\begin{deepsection}{Anoter topic}
  Text.
\end{deepsection}
\end{document}

The deepsection environment defined there takes exactly the same arguments as \section, and chooses the relevant level of sectioning for you. It will also complain if you are going deeper than you should.

Related Solutions

[Tex/LaTex] French section numbering using bis, ter, etc

Original solution Here is a solution using enumitem and enumerate environments.

Not sure wether it's really what you asked for, since you mentioned a numbering of sections.

However, with this solution, all your regularly numbered items must be in a (first level) enumerate environment, and when you need bis, ter, etc, then you can use a nested enumerate environment. Keep in mind that the first \item of this environment will be numbered bis, the second will be numbered ter, etc

\documentclass{article}
\usepackage{xparse}
\usepackage{enumitem}

\ExplSyntaxOn
\seq_new:N \bislist
\seq_set_split:Nnn \bislist {;} {bis;ter;quater;quinquies;sexies;septies;octies;novies;decies}
\NewDocumentCommand {\bisprint} {m}
 {
  \seq_item:Nn \bislist {#1}
 }
\ExplSyntaxOff

\setlist[enumerate,1]{leftmargin=0pt,labelwidth=!,label=\arabic*.,align=left}
\setlist[enumerate,2]{leftmargin=0pt,labelwidth=!,label=\arabic{enumi} \bisprint{\arabic{enumii}}.,align=left}


\begin{document}
\begin{enumerate}
\item First item
\item Second item
\begin{enumerate}
\item First bis item 
\item First ter item
\end{enumerate}
\end{enumerate}


\end{document}

Which produces this kind of results : enter image description here

Maybe, another option to avoid conflicts with other nested enumerate environments would be to create a bis environment this way :

\documentclass{article}
\usepackage{xparse}
\usepackage{enumitem}

\ExplSyntaxOn
\seq_new:N \bislist
\seq_set_split:Nnn \bislist {;} {bis;ter;quater;quinquies;sexies;septies;octies;novies;decies}
\NewDocumentCommand {\bisprint} {m}
 {
  \seq_item:Nn \bislist {#1}
 }
\ExplSyntaxOff

\setlist[enumerate,1]{leftmargin=0pt,labelwidth=!,label=\arabic*.,align=left}

\newlist{bis}{enumerate}{1}
\setlist[bis]{leftmargin=0pt,labelwidth=!,label=\arabic{enumi} \bisprint{\arabic{bisi}}.,align=left}


\begin{document}
\begin{enumerate}
\item First item
\item Second item
\begin{bis}
\item First bis item 
\item First ter item
\end{bis}
\end{enumerate}


\end{document}

This produces the exact same result than the previous code.

Note that if you have 10 or more items in the bis environment, then the numbering will fail (essentially because I have no idea of what follows decies). But I hope your original text does not need to go that far ;-) (however, it seems that certain french laws use decies, and maybe the few next ones...)

Edit : solution working with \section

Here is a solution using \section and \section*. Caution : by redefining these two commands, you will not be able to use them for anything else in the rest of your document (I think you were aware of this, but just in case, now it's clear).

The idea here is to use \section{} to begin a regularly numbered section, and \section*{} for a bis numbered section.

\documentclass{article}
\usepackage{xparse}
\usepackage{enumitem}
\usepackage[explicit]{titlesec}
\usepackage{lipsum}


\ExplSyntaxOn
\seq_new:N \bislist
\seq_set_split:Nnn \bislist {;} {bis;ter;quater;quinquies;sexies;septies;octies;novies;decies}
\NewDocumentCommand {\bisprint} {m}
 {
  \seq_item:Nn \bislist {#1}
 }
\ExplSyntaxOff

\newcounter{bis}
\stepcounter{bis}
\titleformat{\section}[runin]{\normalfont}{\arabic{section}.}{0pt}{}[\setcounter{bis}{1}]
\titleformat{name=\section,numberless}[runin]{\normalfont}{\arabic{section} \bisprint{\arabic{bis}}.}{0pt}{}[\stepcounter{bis}]
\titlespacing{\section}{\parindent}{\baselineskip}{\parindent}{}


\begin{document}

\section{}
\lipsum[1]
\section{}
\lipsum[2]
\section*{}
\lipsum[3]
\section*{}
\lipsum[4]
\section*{}
\lipsum[5]
\section{}
\lipsum[6]
\section{}
\lipsum[7]
\section*{}
\lipsum[8]


\end{document}

If the formatting is not exactly the one you wanted, you can change the parameters of \titleformat and \titlespacing (for example, changing \normalfont to \bfseries will produce bolded numbers).

Update : with the table of contents Here is a last update with the \section* appearing in the table of contents (and this time using book document class as you wanted and with the title formatting you were using in your MWE).

\documentclass{book}
\usepackage{xparse}
\usepackage{enumitem}
\usepackage[explicit]{titlesec}
\usepackage{lipsum}
\usepackage{calc}
\usepackage{totcount}

\ExplSyntaxOn
\seq_new:N \bislist
\seq_set_split:Nnn \bislist {;} {bis;ter;quater;quinquies;sexies;septies;octies;novies;decies}

\NewDocumentCommand {\bisprint} {m}
 {
  \seq_item:Nn \bislist {#1}
 }
\ExplSyntaxOff

\newtotcounter{bismax}
\newcounter{bis}
\stepcounter{bis}
\setcounter{bismax}{1}

\newcommand{\bisadd}{\stepcounter{bis} \setcounter{bismax}{\minof{4}{\maxof{\thebismax}{\thebis-1}}}}

\AtBeginDocument{\newlength{\bislength}
\settowidth{\bislength}{\textit{\bisprint{\totvalue{bismax}}}}
\addtolength{\bislength}{1.5em}}

\titleformat{\section}[block]{\normalfont\large\normalfont\filcenter}{\thesection. --- #1}{0.5em}{}[\setcounter{bis}{1}]

\renewcommand\thesection{\arabic{section}}

\titleformat{name=\section,numberless}[block]{\normalfont\large\normalfont\filcenter}{\arabic{section} \textit{\bisprint{\arabic{bis}}}. --- #1}{0.5em}{}[ \addcontentsline{toc}{section}{\protect\numberline{\arabic{section} \textit{\bisprint{\arabic{bis}}}}#1} \bisadd{}]

\makeatletter
\renewcommand*\l@section{\@dottedtocline{1}{1.5em}{\bislength}}
\makeatother

\begin{document}



\tableofcontents

\section{First section header}
\lipsum[1]
\section{Second section header}
\lipsum[2]
\section*{Third section header}
\lipsum[3]
\section*{Fourth section header}
\lipsum[4]
\section*{Fifth section header}
\lipsum[5]
\section*{Sixth section header}
\lipsum[6]
\section{Seventh section header}
\lipsum[7]
\section*{Eighth section header}
\lipsum[8]

\end{document}

The space between the numbers and the section titles in ToC is now automatically computed so that it is enough to display the longest "bis number" (i.e. the space will be smaller if you just have to print bis or ter than if you need to print quiquies). You can enlarge or reduce this space by changing the value currently set to 1.5em.

Best Answer

Related Solutions

[Tex/LaTex] French section numbering using bis, ter, etc

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