[XeTeX] aligning section- and subsection etc. titles

[Ulrike Fischer]

Am Mon, 9 Aug 2010 09:50:41 +0200 schrieb Jens Bakker:

> Dear Ladies and Gentlemen,
> 
> I would like to ask if there is a possibility to achieve the alignment of the titles of the sections, subjections, and so forth, after the numbers, so that the following picture is achieved if they appear one immediately before the other:
> 
> 1		Introduction
> 1.1		Preliminaries
> 1.1.1	The Project
> 
> 

> I did not find any solution to that problem, and it seems, that it
> is not possible to put the sectionnumbers into the
> \makebox[1cm]{} order, as for example is possible with \fbox as
> is explained in Mittelbach - Goossens: Latex-Begleiter (2.2.1,
> p.29).

\makebox is not robust you must protect it:

\documentclass{article}
\makeatletter
\renewcommand\@seccntformat[1]{\protect\makebox[1cm][l]{\csname
the#1\endcsname}\hspace{0.5ex}}
\makeatother

\begin{document}
\section{A}
\subsection{B}
\subsubsection{C}
\end{document}


-- 
Ulrike Fischer