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%\iffalse
%<*package>
%% \CharacterTable
%% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%% Digits \0\1\2\3\4\5\6\7\8\9
%% Exclamation \! Double quote \" Hash (number) \#
%% Dollar \$ Percent \% Ampersand \&
%% Acute accent \' Left paren \( Right paren \)
%% Asterisk \* Plus \+ Comma \,
%% Minus \- Point \. Solidus \/
%% Colon \: Semicolon \; Less than \<
%% Equals \= Greater than \> Question mark \?
%% Commercial at \@ Left bracket \[ Backslash \\
%% Right bracket \] Circumflex \^ Underscore \_
%% Grave accent \` Left brace \{ Vertical bar \|
%% Right brace \} Tilde \~}
%</package>
%\fi
%\iffalse
% Doc-Source file to use with LaTeX2e
% Copyright (C) 2018 Sebastian Friedl
%
% This work is subject to the LaTeX Project Public License, Version 1.3c or -- at
% your option -- any later version of this license.
% The work consists of the files lualatex-truncate.dtx, lualatex-truncate.ins,
% lualatex-truncate-doc.dtx and the derived file lualatex-truncate.sty
%
% This work has the LPPL maintenance status 'maintained'.
% Current maintainer of the work is Sebastian Friedl.
%\fi
%
%
%
% \subsubsection*{Initialization}
% Identify the package and require \LaTeXe:
% \begin{macrocode}
\ProvidesPackage{lualatex-truncate}%
[2018/06/03 v1.0 LuaLaTeX wrapper for the truncate package]
\NeedsTeXFormat{LaTeX2e}
% \end{macrocode}
%
%
%
% \subsubsection*{Internal variables}
% This internal variable is used to remember whether \enquote{hacking} the hyphenation character (i.e.~"\prehyphenchar") is required:
% \begin{macrocode}
\newif\if@lualtxtruncate@hackhyphen
\@lualtxtruncate@hackhyphenfalse
% \end{macrocode}
%
%
%
% \subsubsection*{Package options}
% The \opt{breakwords} and \opt{breakall} options require the hyphanation character to be hidden.
% Therefore, we remember to \enquote{hack} the hyphen character before passing these options
% to the original \sty{truncate} package:
% \begin{macrocode}
\DeclareOption{breakwords}{%
\@lualtxtruncate@hackhyphentrue
\PassOptionsToPackage{breakwords}{truncate}}
\DeclareOption{breakall}{%
\@lualtxtruncate@hackhyphentrue
\PassOptionsToPackage{breakall}{truncate}}
% \end{macrocode}
%
% \smallskip
% Pass all other options (\opt{hyphenate} and \opt{fit}) directly to the \sty{truncate} package:
% \begin{macrocode}
\DeclareOption*{\PassOptionsToPackage{\CurrentOption}{truncate}}
% \end{macrocode}
%
% \smallskip
% Process all options passed to \sty{lualatex-truncate}:
% \begin{macrocode}
\ProcessOptions
% \end{macrocode}
%
%
%
% \subsubsection*{Loading the \sty{truncate} package}
% Load the \sty{truncate} package. Required package options have already been passed on.
% \begin{macrocode}
\RequirePackage{truncate}
% \end{macrocode}
%
%
%
% \subsubsection*{If the document is not compiled via \hologo{LuaLaTeX}\dots}
% Don't wrap anything if the document isn't compiled by \hologo{LuaLaTeX}:
% \begin{macrocode}
\RequirePackage{iftex}
\ifLuaTeX\else%
\PackageWarningNoLine{lualatex-truncate}%
{Whoops! You don't want to use LuaLaTeX?}%
\endinput%
\fi%
% \end{macrocode}
%
%
%
% \subsubsection*{Constructing the wrapper}
% \begin{macro}{\lualtxtruncate@truncate}
% Remember the original "\truncate" command's definition.
% Since "\truncate" provides an optional argument, "\LetLtxMacro" has to be used
% instead of the primitive "\let" command:
% \begin{macrocode}
\RequirePackage{letltxmacro}
\LetLtxMacro\lualtxtruncate@truncate\truncate
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\truncate}
% Construct the wrapper by redefining the "\truncate" command
% and -- if necessary -- modifying "\prehyphenchar":
% \begin{macrocode}
\renewcommand{\truncate}[3][\TruncateMarker]{%
\if@lualtxtruncate@hackhyphen%
\prehyphenchar=0%
\fi%
\lualtxtruncate@truncate[#1]{#2}{#3}%
\if@lualtxtruncate@hackhyphen%
\prehyphenchar=`\-%
\fi%
}
% \end{macrocode}
% \end{macro}
%
%
%
% \subsubsection*{Famous last words}
% Enough code for this package. "\endinput".
% \begin{macrocode}
\endinput
% \end{macrocode}
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