\part and \chapter commands output both numbered and named headings

Question

I have the following LaTeX document being compiled in TeXstudio 2.3 on Windows 7 (mode is PdfLatex + PdfViewer):

\documentclass[a4paper,12pt]{report}

% Modified \part and \chapter from report.cls
\makeatletter
\def\@part[#1]#2{%
    \ifnum \c@secnumdepth >-2\relax
      \refstepcounter{part}%
      \addcontentsline{toc}{part}{#1}%
    \else
      \addcontentsline{toc}{part}{#1}%
    \fi
    \markboth{}{}%
    {\centering
     \interlinepenalty \@M
     \normalfont
     \Huge \bfseries #2\par}%
    \@endpart}
\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
                         \refstepcounter{chapter}%
                         \typeout{\@chapapp\space\thechapter.}%
                         \addcontentsline{toc}{chapter}%
                                   {#1}%
                    \else
                      \addcontentsline{toc}{chapter}{#1}%
                    \fi
                    \chaptermark{#1}%
                    \addtocontents{lof}{\protect\addvspace{10\p@}}%
                    \addtocontents{lot}{\protect\addvspace{10\p@}}%
                    \if@twocolumn
                      \@topnewpage[\@makechapterhead{#2}]%
                    \else
                      \@makechapterhead{#2}%
                      \@afterheading
                    \fi}\makeatother
\def\@makechapterhead#1{%
  \vspace*{50\p@}%
  {\parindent \z@ \raggedright \normalfont
    \interlinepenalty\@M
    \Huge \bfseries #1\par\nobreak
    \vskip 40\p@
  }}
\renewcommand{\thesection}{\arabic{section}}% Remove \thechapter from \thesection}
\makeatother
\begin{document}
    \tableofcontents
    \part{Part One}
    \chapter[Chapter Other One]{Chapter One}
    \section{Section First}
    \subsection{Subsection X}
    Djigurda is here.
    \subsection{Castles with Penguins}
    Castles with penguins here.
\end{document}​

Problem is, \chapter command produces 2 lines in resulting PDF:

So how do I turn off numbered headings? I want only Chapter One to appear.

Answer 1

Here's a set of redefinitions of sectional units in report.cls. It removes the number of \part and \chapter to be printed in the ToC, as well as the main report body. However, the counters are still incremented in order to reset other slave counters, as is necessary.

\documentclass[a4paper,12pt]{report}
%\usepackage[T2A]{fontenc}% http://ctan.org/pkg/fontenc
%\usepackage[utf8]{inputenc}% http://ctan.org/pkg/inputenc
%\usepackage[english]{babel}% http://ctan.org/pkg/babel

% Modified \part and \chapter from report.cls
\makeatletter
\def\@part[#1]#2{%
    \ifnum \c@secnumdepth >-2\relax
      \refstepcounter{part}%
      \addcontentsline{toc}{part}{#1}%
    \else
      \addcontentsline{toc}{part}{#1}%
    \fi
    \markboth{}{}%
    {\centering
     \interlinepenalty \@M
     \normalfont
     \Huge \bfseries #2\par}%
    \@endpart}
\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
                         \refstepcounter{chapter}%
                         \typeout{\@chapapp\space\thechapter.}%
                         \addcontentsline{toc}{chapter}%
                                   {#1}%
                    \else
                      \addcontentsline{toc}{chapter}{#1}%
                    \fi
                    \chaptermark{#1}%
                    \addtocontents{lof}{\protect\addvspace{10\p@}}%
                    \addtocontents{lot}{\protect\addvspace{10\p@}}%
                    \if@twocolumn
                      \@topnewpage[\@makechapterhead{#2}]%
                    \else
                      \@makechapterhead{#2}%
                      \@afterheading
                    \fi}
\def\@makechapterhead#1{%
  \vspace*{50\p@}%
  {\parindent \z@ \raggedright \normalfont
    \interlinepenalty\@M
    \Huge \bfseries #1\par\nobreak
    \vskip 40\p@
  }}
\renewcommand{\thesection}{\arabic{section}}% Remove \thechapter from \thesection}
\makeatother
\begin{document}
    \tableofcontents
    \part{Part One}
    \chapter[Chapter Other One]{Chapter One}
    \section{Section First}
    \subsection{Subsection X}
    Djigurda is here.
    \subsection{Castles with Penguins}
    Castles with penguins here.
\end{document}​

The affected macros are

• \@part (removed printing Part \thepart and including \thepart in the ToC);
• \@chapter (removed printing \thechapter in the ToC);
• \@makechapterhead (removed printing Chapter \thechapter in the chapter heading); and
• \thesection (removed printing \thechapter as part of the counter).