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\documentclass{ltxdockit}
\usepackage{dtklogos,csquotes,graphicx}
\newcommand\pkgversion{0.4a}
\titlepage{%
title={The showhyphens package},
subtitle={Show all possible hyphenation points},
url={(none yet)},
author={Patrick Gundlach},
email={patrick@gundla.ch},
revision={\pkgversion},
date={\today}}
\begin{document}
\printtitlepage
\tableofcontents
\section{Documentation}
When you load the package \texttt{showhyphens} in your \LuaLaTeX\ document, \LaTeX\ will show all possible hyphenation points. This
package requires you to process the document with \LuaLaTeX.
\begin{verbatim}
\documentclass{article}
\usepackage{showhyphens}
\begin{document}
A wonderful serenity has taken
possession of my entire soul, like these
sweet mornings of spring which I enjoy
with my whole heart. I am alone, and
feel the charm of existence in this
spot, which was created for the bliss of
souls like mine. I am so happy, my dear
friend, so absorbed in the exquisite
sense of mere tranquil existence, that I
neglect my talents. I should be
incapable of drawing a single stroke at
the present moment; and yet I feel that
I never was a greater artist than now.
\end{document}
\end{verbatim}
yields \vspace{5mm}
\noindent \includegraphics{showhyphens-sample}
\section{Bugs and limitations}
% see http://tex.stackexchange.com/q/268884
Ligatures will give incorrect results. For example \enquote{office} gives:
offi'ce but should show of'fice instead. While it is possible to look inside
the ffi ligature and find out where the original hyphen character was placed
(between the first f and the following component fi), it is very hard to draw
the line indicating the hyphenation point correctly. The ffi ligature is one
opaque rectangle to the package. Drawing a line at the correct position is
pure luck, and therefore out of the scope of the package.
\section{Options}
\begin{optionlist}
\legitem{blue}{Shows hyphenation marker in blue, instead of red.}
\end{optionlist}
\section{Changes}
\begin{changelog}
\begin{release}{0.4a}{2015-09-23}
\item Documentation update.
\end{release}
\begin{release}{0.4}{2015-09-22}
\item Document limitation on ligatures.
\end{release}
\begin{release}{0.3}{2014-07-30}
\item Internal changes (node structure corrected, node ids not hard coded)
\end{release}
\begin{release}{0.2}{2012-10-25}
\item New option \enquote{blue}, thanks go to Herbert Vo\ss.
\end{release}
\end{changelog}
\section{Copying}
Copyright 2011-2014 Patrick Gundlach (patrick@gundla.ch), licensed under the MIT license. See the style for details.
\end{document}
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