[Tex/LaTex] Capitalising first letter of each word in section headings using book class

capitalization

I would like to convert the fist letter of each word in all my section headings to capitals automatically. Is it possible?

ie

\section{This is my first section}

Section 1. This Is My First Section

Best Answer

I'm not sure if there are any problems with this approach to making the titlecaps automatic for all sections, but it works for the example given. Check the titlecaps documentation for quirks on how to handle different kinds of non-standard text in its argument.

Note how it is able to handle an "exluded words" list, font styles, fontsize changes, as well as diacritics and national symbols like \ae.

\documentclass{article}
\usepackage{titlecaps}
\let\svsection\section
\def\section#1{\svsection{\titlecap{#1}}}
\begin{document}
\section{This is my first section}

Tah dah  But if you didn't like ``my,'' ``for,'' or ``an'' capitalized, except as the first word:

\Addlcwords{my for an}

\section{for an \ae ncore, my \textit{section} for \small \c consideration}

done.
\end{document}

enter image description here

UPDATE: I did find that the section redefinition above will break \tableofcontents unless care is taken. If that is a necessary ingredient of your work, then this approach below will work. Renewing the \def of \section must occur after the \tableofcontents. Also, the \Addlcwords must occur before the \tableofcontents. Furthermore, fontsize changes in a section heading will also break the \tableofcontents, so I have removed them from this example.

EDITED to handle optional arguments in \section, as shown in section 3 below.

\documentclass{article}
\usepackage{titlecaps}
\let\svsection\section
\Addlcwords{is for an of}
\begin{document}
\tableofcontents

\renewcommand\section[2][\relax]{%
  \ifx\relax#1%
    \svsection{\titlecap{#2}}%
  \else%
    \svsection[\titlecap{#1}]{\titlecap{#2}}%
  \fi%
}
\section{This is my first section}

Tah dah  But if you didn't like ``my,'' ``for,'' or ``an'' capitalized, except as the first word:


\section{for an \ae ncore, my \textit{section} for \c consideration}

\section[table of contents title]{document title}

done.

\end{document}

enter image description here

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