From d79a721c345c9a2ced6c0640e88c10cc3378c1f0 Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Wed, 1 Jul 2020 03:03:30 +0000
Subject: CTAN sync 202007010303

---
 macros/luatex/latex/cloze/cloze.dtx | 1929 -----------------------------------
 1 file changed, 1929 deletions(-)
 delete mode 100644 macros/luatex/latex/cloze/cloze.dtx

(limited to 'macros/luatex/latex/cloze/cloze.dtx')

diff --git a/macros/luatex/latex/cloze/cloze.dtx b/macros/luatex/latex/cloze/cloze.dtx
deleted file mode 100644
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--- a/macros/luatex/latex/cloze/cloze.dtx
+++ /dev/null
@@ -1,1929 +0,0 @@
-% \iffalse meta-comment
-%
-% Copyright (C) 2015-2020 by Josef Friedrich <josef@friedrich.rocks>
-% ----------------------------------------------------------------------
-% This work may be distributed and/or modified under the conditions of
-% the LaTeX Project Public License, either version 1.3 of this license
-% or (at your option) any later version.  The latest version of this
-% license is in:
-%
-%   http://www.latex-project.org/lppl.txt
-%
-% and version 1.3 or later is part of all distributions of LaTeX
-% version 2005/12/01 or later.
-%
-% This work has the LPPL maintenance status `maintained'.
-%
-% The Current Maintainer of this work is Josef Friedrich.
-%
-% This work consists of the files cloze.dtx and cloze.ins
-% and the derived filebase cloze.sty and cloze.lua.
-%
-% \fi
-%
-% \iffalse
-%<*driver>
-\ProvidesFile{cloze.dtx}
-%</driver>
-%<package>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
-%<package>\ProvidesPackage{cloze}
-%<*package>
-    [2020/05/27 v1.5 Package to typeset cloze worksheets or cloze tests]
-%</package>
-%<*driver>
-\documentclass{ltxdoc}
-\usepackage[show]{cloze}
-\usepackage{graphicx}
-\usepackage{paralist}
-\usepackage{titlesec}
-\usepackage{mdframed}
-\titleformat{\paragraph}[hang]{%
-  \normalfont\normalsize\bfseries%
-  }{\theparagraph}{1em}{}
-\titleformat{\subparagraph}[hang]{%
-  \normalfont\small\bfseries%
-  }{\thesubparagraph}{1em}{}
-  \titlespacing*{\subparagraph}{0pt}{*1}{0pt}
-
-\usepackage[
-  colorlinks=true,
-  linkcolor=red,
-  filecolor=red,
-  urlcolor=red,
-]{hyperref}
-
-\usepackage{minted}
-\usemintedstyle{colorful}
-\BeforeBeginEnvironment{minted}{\begin{mdframed}[backgroundcolor=gray!3]}
-\AfterEndEnvironment{minted}{\end{mdframed}}
-\setminted{
-  breaklines=true,
-  fontsize=\footnotesize,
-}
-
-
-\MakeShortVerb{\|}
-
-\setlength{\fboxrule}{0.2pt}
-\setlength{\fboxsep}{4pt}
-
-\makeatletter
-\newcommand{\@minipagerestore}{\setlength{\parindent}{10pt}}
-\makeatother
-
-\newmdenv{example}
-\definecolor{graybackground}{gray}{0.97}
-\surroundwithmdframed[backgroundcolor=graybackground]{verbatim}
-
-\newcommand{\getdefaults}[1]{%
-  \directlua{tex.print(cloze.get_defaults('#1'))}%
-}
-
-\newcommand{\expdesc}[1]{(|#1|)}
-
-\newcommand{\desc}[1]{%
-  \hfill%
-  \expdesc{#1}%
-  \par%
-}
-
-\def\tt#1{\texttt{#1}}
-
-\def\secref#1{(\rightarrow\ \ref{#1})}
-
-\newcommand{\option}[2]{\tt{[#1=}\meta{#2}\tt{]}}
-\newcommand{\clozeluafunction}[1]{
-  \marginpar{%
-    \raggedleft%
-    \MacroFont%
-    \tt{%
-      \scantokens{\catcode`\_=12\relax#1}%
-    }%
-  }%
-}
-
-\newcommand{\nodelisthfont}{\bfseries\sffamily}
-
-\newcommand{\nodelistheader}{
-  \hline
-  \nodelisthfont Variable name &
-  \nodelisthfont Node type &
-  \nodelisthfont Node subtype &
-  \nodelisthfont Parameter \\
-  \hline
-}
-
-\newenvironment{nodelist}{
-  \noindent
-  \begingroup
-  \footnotesize
-  \begin{tabular}{llll}
-  \nodelistheader
-}{
-  \hline
-  \end{tabular}
-  \endgroup
-}
-
-\EnableCrossrefs
-\CodelineIndex
-\RecordChanges
-\begin{document}
-
-\providecommand*{\url}{\texttt}
-\GetFileInfo{cloze.dtx}
-\title{The \cloze{cloze} package%
-  \thanks{Many thanks to Robert-Michael Huber for his advice
-and to Paul Isambert for his article \emph{"Three things you can do with
-Lua\TeX{} that would be extremely painful otherwise"} in TUGboat, Volume
-31 (2010), No. 3. This article helped a lot to write this package.}%
-}
-\author{%
-  Josef Friedrich\\%
-  \url{josef@friedrich.rocks}\\%
-  \href{https://github.com/Josef-Friedrich/cloze}{github.com/Josef-Friedrich/cloze}%
-}
-\date{\fileversion~from \filedate}
-
-\maketitle\vfill
-
-\pagebreak
-
-\setcounter{secnumdepth}{5}
-\setcounter{tocdepth}{5}
-\tableofcontents
-
-%-----------------------------------------------------------------------
-% Introduction
-%-----------------------------------------------------------------------
-
-\pagebreak
-\section{Introduction}
-
-\emph{cloze} is a \LaTeX{} package to generate cloze texts. It uses
-the capabilities of the modern \TeX{} engine \emph{Lua\TeX}. Therefore,
-you must use Lua\LaTeX{} to create documents containing gaps.
-
-\begin{verbatim}
-lualatex cloze-text.tex
-\end{verbatim}
-
-The main feature of the package is that the formatting doesn't change
-when using the |hide| and |show| \secref{sec:option-hide} options.
-
-\newcommand{\clozelorem}{%
-Lorem ipsum \cloze{dolor sit} amet, consectetur \cloze{adipisicing}
-elit, sed do eiusmod tempor incididunt ut labore et \cloze{dolore magna}
-aliqua. Ut enim ad minim veniam, quis nostrud \cloze{exercitation}
-ullamco laboris nisi ut \cloze{aliquip} ex ea commodo consequat.%
-}
-
-\begin{example}
-\clozelorem
-\end{example}
-
-\clozeset{hide}
-
-The command |\clozeset{hide}| only shows gaps. When you put both texts
-on top of each other you will see that they perfectly match.
-
-\begin{example}
-\clozelorem
-\end{example}
-
-\clozeset{show}
-
-%-----------------------------------------------------------------------
-% Usage
-%-----------------------------------------------------------------------
-
-\section{Usage}
-
-There are the commands
-\cmd{\cloze},
-\cmd{\clozefix},
-\cmd{\clozefil},
-\cmd{\clozenol},
-\cmd{\clozestrike} and the environments
-|clozepar| and
-|clozebox|
-to generate cloze texts.
-
-%%
-% \cloze
-%%
-
-\subsection{The commands and environments}
-
-\subsubsection{\cmd{\cloze}}
-\label{sec:command-cloze}
-
-\DescribeMacro{\cloze} \cmd{\cloze}\oarg{options}\marg{some text}: The
-command \cmd{\cloze} is similar to a command that offers the possibility
-to underline the texts. \cmd{\cloze} does not prevent line breaks. The
-width of a gap depends on the number of letters and the font used.
-The only option which affects the widths of a gap is the option
-|margin| \secref{sec:option-margin}.
-
-\begin{example}
-Lorem ipsum \cloze{dolor} sit amet, \cloze{consectetur} adipisicing
-elit, sed do eiusmod tempor incididunt ut labore et dolore
-\cloze{magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation
-ullamco laboris nisi} ut aliquip ex ea commodo consequat.
-\end{example}
-
-\noindent It is possible to convert a complete paragraph into a `gap'.
-But don't forget: There is a special environment for this: \tt{clozepar}
-\secref{sec:command-clozepar}.
-
-\begin{example}
-\cloze{Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
-eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad
-minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip
-ex ea commodo consequat.}
-\end{example}
-
-\noindent The command \cmd{\cloze} doesn't change the behavior of the
-hyphenation. Let's try some long German words:
-
-\begin{example}
-es
-\cloze{Te\-le\-kom\-mu\-ni\-ka\-tions\-ü\-ber\-wach\-ung}
-geht
-\cloze{Un\-ter\-neh\-mens\-steu\-er\-fort\-ent\-wick\-lungs\-ge\-setz}
-\cloze{Ab\-teil\-ungs\-lei\-ter\-in}
-\cloze{Ober\-kom\-mi\-sar\-in}
-auch
-\cloze{Fil\-lial\-lei\-ter\-in}
-kurz
-\cloze{Ober\-kom\-mi\-sar\-in}
-\cloze{Un\-ter\-neh\-mens\-steu\-er\-fort\-ent\-wick\-lungs\-ge\-setz}
-\cloze{Fil\-lial\-lei\-ter\-in}
-\cloze{Metz\-ger\-mei\-ster\-in}
-in
-\cloze{Ab\-teil\-ungs\-lei\-ter\-in}
-der
-\cloze{Ober\-kom\-mi\-sar\-in}
-\cloze{Hoch\-lei\-stungs\-flüs\-sig\-keits\-chro\-ma\-to\-gra\-phie}
-\cloze{Fil\-lial\-lei\-ter\-in}
-Kürze
-\cloze{Un\-ter\-neh\-mens\-steu\-er\-fort\-ent\-wick\-lungs\-ge\-setz}
-\cloze{Metz\-ger\-mei\-ster\-in}
-liegt
-\cloze{Ab\-teil\-ungs\-lei\-ter\-in}
-die
-\cloze{Metz\-ger\-mei\-ster\-in}
-\cloze{Ab\-teil\-ungs\-lei\-ter\-in}
-Würze
-\cloze{Ober\-kom\-mi\-sar\-in}
-\end{example}
-
-%%
-% \clozesetfont
-%%
-
-\subsubsection{\cmd{\clozesetfont}}
-\label{sec:command-clozesetfont}
-\label{sec:command-clozefont}
-
-\DescribeMacro{\clozesetfont}
-The gap font can be changed by using the command
-\cmd{\clozesetfont}. \tt{\string\cloze\-set\-font} redefines the command
-\cmd{\clozefont} which contains the font definition.
-Thus, the command \tt{\string\clozesetfont\string{\string\Large\string}}
-has the same effect as
-\tt{\string\re\-new\-com\-mand\string{\string\cloze\-font\string}%
-\string{\string\Large\string}}.
-
-\clozesetfont{\Large}
-
-\begin{example}
-Excepteur \cloze{sint} occaecat \cloze{cupidatat} non proident.
-\end{example}
-
-\noindent Please do not put any color definitions in
-\cmd{\clozesetfont}, as it won't work. Use the option
-|textcolor| instead \secref{sec:option-textcolor}.
-
-|\clozesetfont{\ttfamily\normalsize}| changes the gap text for example
-into a normal sized typewriter font.
-
-\clozesetfont{\ttfamily\normalsize}
-
-\begin{example}
-Excepteur \cloze{sint} occaecat \cloze{cupidatat} non proident.
-\end{example}
-
-\clozesetfont{\itshape}
-
-%%
-% \clozefix
-%%
-
-\subsubsection{\cmd{\clozefix}}
-\label{sec:command-clozefix}
-
-\DescribeMacro{\clozefix} \cmd{\clozefix}\oarg{options}\marg{some text}:
-The command \cmd{\clozefix} creates gaps with a fixed width. The
-clozes are default concering the width \tt{\getdefaults{width}}.
-
-\begin{example}
-\noindent Lorem ipsum dolor sit amet:
-\begin{compactenum}
-\item \clozefix[width=5cm]{consectetur}
-\item \clozefix[width=5cm]{adipisicing}
-\item \clozefix[width=5cm]{elit}
-\end{compactenum}
-sed do eiusmod.
-\end{example}
-
-Gaps with a fixed width are much harder to solve.
-
-\begin{example}
-Lorem ipsum dolor \clozefix[align=center,width=3cm]{sit} amet,
-\clozefix[align=center,width=3cm]{consectetur} adipisicing elit, sed do
-eiusmod tempor incididunt \clozefix[align=center,width=3cm]{ut} labore
-et dolore magna aliqua.
-\end{example}
-
-Using the option |align| you can make nice tabulars like this:
-
-\begin{example}
-\begin{tabular}{p{5cm}p{4cm}}
-\raggedleft Composer & Life span \\
-\clozefix[width=5cm,align=right]{Joseph Haydn} & \clozefix{1723-1809} \\
-\clozefix[width=5cm,align=right]{Wolfgang Amadeus Mozart} & \clozefix{1756-1791} \\
-\clozefix[width=5cm,align=right]{Ludwig van Beethoven} & \clozefix{1770-1827} \\
-\end{tabular}
-\end{example}
-
-%%
-% \clozenol
-%%
-
-\subsubsection{\cmd{\clozenol}}
-\label{sec:command-clozenol}
-\DescribeMacro{\clozenol} \cmd{\clozenol}\oarg{options}\marg{some text}:
-The macro name |clozenol| stands for \emph{“cloze no line”}. As the
-the name suggests this macro typesets cloze texts without a line.
-
-\begin{minted}{latex}
-Lorem \clozenol{ipsum dolor} sit amet.
-\end{minted}
-
-\begin{example}
-Lorem \clozenol{ipsum dolor} sit amet.
-\end{example}
-
-\begin{minted}{latex}
-Lorem \clozenol[textcolor=green]{ipsum dolor} sit amet.
-\end{minted}
-
-\begin{example}
-Lorem \clozenol[textcolor=green]{ipsum dolor} sit amet.
-\end{example}
-
-%%
-% \clozefil
-%%
-
-\subsubsection{\cmd{\clozefil}}
-\label{sec:command-clozefil}
-
-\DescribeMacro{\clozefil} \cmd{\clozefil}\oarg{options}\marg{some text}:
-The name of the command is inspired by \cmd{\hfil}, \cmd{\hfill}, and
-\cmd{\hfilll}. Only \cmd{\clozefil} fills out all available horizontal
-spaces with a line.
-
-\begin{example}
-Lorem ipsum dolor sit amet, \clozefil{consectetur adipisicing elit, sed
-do eiusmod.}
-
-Ut enim \clozefil{ad minim veniam} exercitation.
-\end{example}
-
-%%
-% \clozeextend
-%%
-
-\subsubsection{\cmd{\clozeextend}}
-\label{sec:command-clozeextend}
-
-\DescribeMacro{\clozeextend} \cmd{\clozeextend}\oarg{spaces}:
-The command |\clozeextend| adds some invisible placeholders to extend
-some cloze texts with blank space.
-
-\begin{minted}{latex}
-\begin{itemize}
-\item \clozefil{Lorem ipsum dolor sit amet, consectetur adipisicing
-elit, sed do eiusmod tempor incididunt ut labore et dolore magna
-aliqua.}
-\item \clozefil{Ut enim ad minim veniam \clozeextend[20]}
-\item \clozefil{quis nostrud \clozeextend[20]}
-\end{itemize}
-\end{minted}
-
-\begin{example}
-\begin{itemize}
-\item \clozefil{Lorem ipsum dolor sit amet, consectetur adipisicing
-elit, sed do eiusmod tempor incididunt ut labore et dolore magna
-aliqua.}
-\item \clozefil{Ut enim ad minim veniam \clozeextend[20]}
-\item \clozefil{quis nostrud \clozeextend[20]}
-\end{itemize}
-\end{example}
-
-%%
-% clozepar
-%%
-
-\subsubsection{\tt{clozepar}}
-\label{sec:command-clozepar}
-
-\DescribeEnv{clozepar} |\begin{clozepar}|\oarg{options} \dots
-\textit{some text} \dots |\end{clozepar}|: The environment \tt{clozepar}
-transforms a complete paragraph into a cloze text. The options |align|,
-|margin| and |width| have no effect on this environment.
-
-\begin{example}
-Lorem ipsum dolor sit amet, consectetur adipisicing elit ullamco laboris
-nisi.
-
-\begin{clozepar}
-Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi
-ut aliquip ex ea commodo consequat. Duis aute irure dolor in
-reprehenderit in voluptate velit esse cillum.
-\end{clozepar}
-
-Excepteur sint occaecat cupidatat non proident.
-\end{example}
-
-%%
-% clozebox
-%%
-
-\subsubsection{\tt{clozebox}}
-\label{sec:command-clozebox}
-
-\DescribeEnv{clozebox} |\begin{clozebox}|*\oarg{options} \dots
-\textit{some text} \dots |\end{clozebox}|: The environment \tt{clozebox}
-surrounds a text with a box. The starred version omits the line
-around the box. Use the options |boxwidth| and |boxheight| to specify
-the dimensions of the box. By default the width of the box is
-|\linewidth|.
-
-\begin{minted}{latex}
-\begin{clozebox}
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{minted}
-
-\bigskip
-\noindent
-|\clozehide|
-\clozehide
-\bigskip
-
-\begin{center}
-\begin{clozebox}[boxwidth=8cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{center}
-
-\bigskip
-\noindent
-|\clozeshow|
-\clozeshow
-\bigskip
-
-\begin{center}
-\begin{clozebox}[boxwidth=8cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{center}
-
-\paragraph{Option boxwidth}
-\label{sec:command-clozebox-boxwidth}
-See the documentation about the option \secref{sec:option-boxwidth}.
-
-\begin{minted}{latex}
-\begin{clozebox}[boxwidth=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{minted}
-
-\begin{center}
-\begin{clozebox}[boxwidth=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{center}
-
-\paragraph{Option boxheight}
-\label{sec:command-clozebox-boxheight}
-See the documentation about the option \secref{sec:option-boxheight}.
-
-\begin{minted}{latex}
-\begin{clozebox}[boxwidth=5cm,boxheight=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{minted}
-
-\begin{center}
-\begin{clozebox}[boxwidth=5cm,boxheight=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{center}
-
-\paragraph{starred}
-
-% starred
-\begin{minted}{latex}
-\begin{clozebox}*[boxwidth=5cm,boxheight=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{minted}
-
-\begin{center}
-\begin{clozebox}*[boxwidth=5cm,boxheight=5cm]
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
-tempor incididunt ut labore et dolore magna aliqua.
-\end{clozebox}
-\end{center}
-
-%%
-% clozespace
-%%
-
-\subsubsection{\tt{clozespace}}
-\label{sec:command-clozespace}
-
-\DescribeEnv{clozespace} |\begin{clozespace}|\oarg{options} \dots
-\textit{some text} \dots |\end{clozespace}|
-
-\begin{minted}{latex}
-\begin{clozespace}[spacing=2]
-\clozesetfont{\ttfamily\Huge}
-Lorem \cloze{ipsum} dolor sit \cloze{amet}, consectetur adipisicing
-elit, sed do eiusmod tempor incididunt ut labore et dolore magna
-aliqua. Ut enim ad minim veniam, quis \cloze{nostrud}
-exercitation ullamco \cloze{laboris} nisi ut aliquip ex ea commodo
-consequat.
-\end{clozespace}
-\end{minted}
-
-\begin{example}
-\begin{clozespace}[spacing=2]
-\clozesetfont{\ttfamily\Huge}
-Lorem \cloze{ipsum} dolor sit \cloze{amet}, consectetur adipisicing
-elit, sed do eiusmod tempor incididunt ut labore et dolore magna
-aliqua. Ut enim ad minim veniam, quis \cloze{nostrud}
-exercitation ullamco \cloze{laboris} nisi ut aliquip ex ea commodo
-consequat.
-\vspace{-0.8cm}
-\end{clozespace}
-\end{example}
-
-%%
-% \clozeline
-%%
-
-\subsubsection{\cmd{\clozeline}}
-\label{sec:command-clozeline}
-
-\DescribeMacro{\clozeline}
-\cmd{\clozeline}\oarg{options}:
-To create a cloze line of a certain width, use the command
-\cmd{\clozeline}. The default width of the line is
-\tt{\getdefaults{width}}. In combination with the other cloze commands
-you can create for example an irregular alignment of the cloze text.
-
-\begin{minted}{latex}
-Ut enim ad
-\clozeline[width=1cm]\cloze{minim}\clozeline[width=3cm]
-minim veniam
-\end{minted}
-
-\begin{example}
-Ut enim ad \clozeline[width=1cm]\cloze{minim}\clozeline[width=3cm] minim
-veniam,
-\end{example}
-
-%%
-% \clozelinefil
-%%
-
-\subsubsection{\cmd{\clozelinefil}}
-\label{sec:command-clozelinefil}
-
-\DescribeMacro{\clozelinefil}
-\cmd{\clozelinefil}\oarg{options}:
-This command \cmd{\clozelinefil} fills the
-complete available horizontal space with a line. Moreover,
-\cmd{\clozelinefil} was used to create \cmd{\clozefil}.
-
-\begin{example}
-Lorem\clozelinefil
-\end{example}
-
-%%
-% \clozestrike
-%%
-
-\subsubsection{\cmd{\clozestrike}}
-\label{sec:command-clozelinefil}
-
-\DescribeMacro{\clozestrike}
-\cmd{\clozestrike}\oarg{options}\marg{wrong text}\marg{correct text}
-
-\begin{minted}{latex}
-Lorem \clozestrike{ipsum}{dolor} sit amet.
-\end{minted}
-
-\begin{example}
-Lorem \clozestrike{ipsum}{dolor} sit amet.
-\end{example}
-
-\begin{minted}{latex}
-Lorem \clozestrike[textcolor=red]{ipsum}{dolor} sit amet.
-\end{minted}
-
-\begin{example}
-Lorem \clozestrike[textcolor=red]{ipsum}{dolor} sit amet.
-\end{example}
-
-\begin{example}
-\begin{clozespace}
-invidunt ut \clozestrike{labore}{et dolore magna aliquyam erat}, sed
-diam voluptua. At \clozestrike{vero eos}{et accusam et justo} duo
-dolores et ea \clozestrike{rebum. Stet}{clita kasd gubergren}, no sea
-takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum
-\clozestrike{dolor sit amet, consetetur }{sadipscing elitr, sed diam}
-nonumy eirmod tempor invidunt ut labore et dolore magna
-aliquyam erat, \clozestrike{sed diam voluptua}{At vero}.
-\end{clozespace}
-\end{example}
-
-\begin{example}
-\clozehide
-\begin{clozespace}
-invidunt ut \clozestrike{labore}{et dolore magna aliquyam erat}, sed
-diam voluptua. At \clozestrike{vero eos}{et accusam et justo} duo
-dolores et ea \clozestrike{rebum. Stet}{clita kasd gubergren}, no sea
-takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum
-\clozestrike{dolor sit amet, consetetur }{sadipscing elitr, sed diam}
-nonumy eirmod tempor invidunt ut labore et dolore magna
-aliquyam erat, \clozestrike{sed diam voluptua}{At vero}.
-\end{clozespace}
-\clozeshow
-\end{example}
-
-%-----------------------------------------------------------------------
-% Options
-%-----------------------------------------------------------------------
-
-\subsection{The options}
-
-%%
-% Local and global options
-%%
-
-\subsubsection{Local and global options}
-
-The \emph{cloze} package distinguishs between \emph{local} and
-\emph{global} options. Besides the possiblity to set \emph{global}
-options in the \cmd{\usepackage}\oarg{global options}\marg{cloze}
-declaration, the cloze package offers a special command to set
-\emph{global} options:
-\cmd{\clozeset}\marg{global options}
-
-%%
-% \clozeset
-%%
-
-\subsubsection{\cmd{\clozeset}}
-\label{sec:command-clozeset}
-
-\DescribeMacro{\clozeset}
-\cmd{\clozeset}\marg{global options}: The command can set \emph{global}
-options for each paragraph.
-
-\begin{minted}{latex}
-\clozeset{textcolor=red} Lorem \cloze{ipsum} dolor \par
-\clozeset{textcolor=green} Lorem \cloze{ipsum} dolor
-\end{minted}
-
-\begin{example}
-\clozeset{textcolor=red} Lorem \cloze{ipsum} dolor \par
-\clozeset{textcolor=green} Lorem \cloze{ipsum} dolor
-\end{example}
-
-\noindent \cmd{\clozeset} does not change the options within a
-paragraph. As you can see in the example below the last \cmd{\clozeset}
-applies the color green for both gaps.
-
-\begin{minted}{latex}
-\clozeset{textcolor=red} Lorem \cloze{ipsum} dolor
-\clozeset{textcolor=green} Lorem \cloze{ipsum} dolor
-\end{minted}
-
-\begin{example}
-\clozeset{textcolor=red} Lorem \cloze{ipsum} dolor
-\clozeset{textcolor=green} Lorem \cloze{ipsum} dolor
-\end{example}
-
-\clozereset
-
-%%
-% \clozereset
-%%
-
-\subsubsection{\cmd{\clozereset}}
-\label{sec:command-clozereset}
-
-\DescribeMacro{\clozereset}
-\cmd{\clozereset}: The command resets all \emph{global} options to the
-default values. It has no effect on the \emph{local} options.
-
-\begin{minted}{latex}
-\clozeset{
-  thickness=3mm,
-  linecolor=yellow,
-  textcolor=magenta,
-  margin=-2pt
-}
-\end{minted}
-
-\clozeset{thickness=3mm,linecolor=yellow,textcolor=magenta,margin=-2pt}
-
-\begin{example}
-Very \cloze{silly} global \cloze{options}.
-\end{example}
-
-\begin{minted}{latex}
-\clozereset
-\end{minted}
-\clozereset
-
-\begin{example}
-\cloze{Relax!} We can reset \cloze{those} options.
-\end{example}
-
-%%
-% \clozereset
-%%
-
-\subsubsection{\cmd{\clozeshow} and \cmd{\clozehide}}
-\label{sec:command-clozeshow}
-\label{sec:command-clozehide}
-
-\DescribeMacro{\clozeshow} \DescribeMacro{\clozehide}
-\cmd{\clozeshow} and \cmd{\clozehide}: This commands are shortcuts for
-\cmd{\clozeset}\marg{show} and \cmd{\clozeset}\marg{hide}.
-
-\begin{minted}{latex}
-\clozehide
-\end{minted}
-\clozehide
-
-\begin{example}
-Lorem \cloze{ipsum dolor sit} amet, consectetur \cloze{adipisicing}
-elit.
-\end{example}
-
-\begin{minted}{latex}
-\clozeshow
-\end{minted}
-\clozeshow
-
-\begin{example}
-Lorem \cloze{ipsum dolor sit} amet, consectetur \cloze{adipisicing}
-elit.
-\end{example}
-
-%%
-% align
-%%
-
-\subsubsection{\tt{align}}
-\label{sec:option-align}
-
-\option{align}{left/center/right}:
-Only the macro \cmd{\clozefix} \secref{sec:command-clozefix} takes the
-option \tt{align} into account. Possible values are \tt{left},
-\tt{center} and \tt{right}. This option only makes sense, if the width
-of the line is larger than the width of the text.
-
-\newcommand{\optionsalign}[1]{%
-  \noindent%
-  \clozefix[align=#1,width=8cm]{Lorem ipsum}%
-  \desc{#1}%
-}
-
-\begin{example}
-\optionsalign{left}
-\optionsalign{center}
-\optionsalign{right}
-\end{example}
-
-%%
-% boxheight
-%%
-
-\subsubsection{\tt{boxheight}}
-\label{sec:option-boxheight}
-
-|boxheight| specifies the height of a cloze box. This option has only
-an effect on the environment |clozebox| \secref{sec:command-clozebox}.
-An example can be found in the section about the environment
-\secref{sec:command-clozebox-boxheight}.
-
-%%
-% boxwidth
-%%
-
-\subsubsection{\tt{boxwidth}}
-\label{sec:option-boxwidth}
-
-|boxwidth| specifies the width of a cloze box. This option has only
-an effect on the environment |clozebox| \secref{sec:command-clozebox}.
-An example can be found in the section about the environment
-\secref{sec:command-clozebox-boxwidth}.
-
-%%
-% distance
-%%
-
-\subsubsection{\tt{distance}}
-\label{sec:option-distance}
-
-\option{distance}{dimen}:
-The option |distance| specifies the spacing between the baseline of the
-text and the gap line. The larger the dimension of the option
-|distance|, the more moves the line down. Negative values cause the line
-to appear above the baseline. The default value is
-\tt{\getdefaults{distance}}.
-
-\newcommand{\optiondistance}[1]{%
-  \noindent%
-  \clozefil[distance=#1]{Lorem ipsum dolor sit amet.}
-  \expdesc{#1}
-  \par%
-}
-
-\begin{example}
-\optiondistance{\getdefaults{distance}}
-\optiondistance{3pt}
-\optiondistance{-3pt}
-\end{example}
-
-%%
-% hide and show
-%%
-
-\subsubsection{\tt{hide} and \tt{show}}
-\label{sec:option-hide}
-\label{sec:option-show}
-
-\tt{[hide]} and \tt{[show]}:
-By default the cloze text is displayed. Use the option |hide| to remove
-the cloze text from the output.  If you accidentally specify both
-options -- |hide| and |show| -- the last option "wins".
-
-\newcommand{\optionshow}[1]{%
-  \noindent%
-  Lorem ipsum \cloze[#1]{dolor sit amet}, consectetur
-  \cloze[#1]{adipisicing} elit.%
-  \desc{#1}%
-}
-
-\begin{example}
-\optionshow{hide}
-\optionshow{show}
-\optionshow{show,hide}
-\optionshow{hide,show}
-\end{example}
-
-%%
-% linecolor and textcolor
-%%
-
-\subsubsection{\tt{linecolor} and \tt{textcolor}}
-\label{sec:option-linecolor}
-\label{sec:option-textcolor}
-
-\option{linecolor}{color name} and
-\option{textcolor}{color name}:
-Values for both color options are color names used by the xcolor
-package. To define your own color use the following command:
-
-\begin{minted}{latex}
-\definecolor{myclozecolor}{rgb}{0.1,0.4,0.6}
-\cloze[textcolor=myclozecolor]{Lorem ipsum}
-\end{minted}
-\definecolor{myclozecolor}{rgb}{0.1,0.4,0.6}
-
-\newcommand{\optioncolor}[2]{%
-  \noindent%
-  \clozefil[#1=#2]{Lorem ipsum dolor sit amet, consectetur} %
-  \expdesc{#2}%
-  \par%
-}
-
-\begin{example}
-\optioncolor{textcolor}{myclozecolor}
-\optioncolor{textcolor}{red}
-\optioncolor{textcolor}{green}
-\end{example}
-
-\noindent You can use the same color names to colorize the cloze lines.
-
-\begin{example}
-\optioncolor{linecolor}{myclozecolor}
-\optioncolor{linecolor}{red}
-\optioncolor{linecolor}{green}
-\end{example}
-
-\noindent
-And now hide the clozes:
-
-\clozehide
-\begin{example}
-\optioncolor{linecolor}{myclozecolor}
-\optioncolor{linecolor}{red}
-\optioncolor{linecolor}{green}
-\end{example}
-\clozeshow
-
-%%
-% margin
-%%
-
-\subsubsection{\tt{margin}}
-\label{sec:option-margin}
-
-\option{margin}{dimen}:
-The option |margin| indicates how far the line sticks up from the text.
-The option can be used with the commands \cmd{\cloze}, \cmd{\clozefix}
-and \cmd{\clozefil}. The default value of the option is
-\tt{\getdefaults{margin}}.
-
-\newcommand{\optionmargin}[1]{%
-  \noindent%
-  Lorem ipsum \cloze[margin=#1]{dolor} sit amet.%
-  \desc{#1}%
-}
-
-\begin{example}
-\optionmargin{0pt}
-\optionmargin{5mm}
-\optionmargin{1cm}
-\optionmargin{6em}
-\optionmargin{-4pt}
-\end{example}
-
-% Folgt ein Satzzeichen direkt auf eine Lücke, so findet der
-% Zeilenumbruch erst nach dem Satzzeichen statt. Auch ein noch so großer
-% Wert für |margin| beeinflusst dieses Verhalten nicht.
-\noindent Is a punctation mark placed directly after a gap, then the
-line breaks after this punctation mark. Even the most large value of
-|margin| does not affect this behavior.
-
-\begin{example}
-\clozeset{margin=3mm}
-\cloze{Lorem}, \cloze{ipsum}. \cloze{dolor}; \cloze{sit}: \cloze{amet},
-\cloze{consectetur}. \cloze{adipisicing}; \cloze{elit}: \cloze{sed},
-\cloze{do}. \cloze{eiusmod}; \cloze{tempor}.
-\end{example}
-
-\clozereset
-
-%%
-% spacing
-%%
-
-\subsubsection{\tt{spacing}}
-\label{sec:option-spacing}
-
-\option{spacing}{number}: This option provides support for setting the
-spacing  between lines. A larger font used for the cloze texts needs
-more line space to avoid unsteady line distances.
-This option only affects the environment |clozespace|
-\secref{sec:command-clozespace}.
-
-%%
-% thickness
-%%
-
-\subsubsection{\tt{thickness}}
-\label{sec:option-thickness}
-
-\option{thickness}{dimen}:
-The option |thickness| indicates how thick the line is. The option
-|distance| \secref{sec:option-distance} is not affected by this option,
-because the bottom of the line moves down. The default value of this
-option is \tt{\getdefaults{thickness}}.
-
-\newcommand{\optionthickness}[1]{%
-  \noindent%
-  Lorem \cloze[thickness=#1]{ipsum dolor sit} amet.%
-  \desc{#1}%
-}
-
-\begin{example}
-\optionthickness{0.01pt}
-\optionthickness{1pt}
-\optionthickness{2pt}
-\end{example}
-
-%%
-% width
-%%
-
-\subsubsection{\tt{width}}\label{sec:option-width}
-
-\option{width}{dimen}:
-The only command which can be changed by the option |width| is
-\cmd{\clozefix} \secref{sec:command-clozefix}. The default value of the
-option is \tt{\getdefaults{width}}.
-
-\newcommand{\optionwidth}[1]{%
-  \noindent%
-  Lorem \clozefix[width=#1]{dolor} amet.%
-  \desc{#1}%
-}
-
-\begin{example}
-\optionwidth{3cm}
-\optionwidth{5cm}
-\optionwidth{7cm}
-\end{example}
-
-%-----------------------------------------------------------------------
-% Special application areas
-%-----------------------------------------------------------------------
-
-\subsection{Special application areas}
-
-This section lists examples that didn’t work in older versions of
-the cloze package and required special treatment to work as expected.
-
-\subsubsection{The math mode}
-
-By default the package uses |\itshape| to format the cloze text. In
-math mode you have to reset the cloze text format by calling
-|\clozesetfont{}|. A known bug ist: You can’t show and hide
-single display math formulas. Only the last |\clozeshow| or |\clozehide|
-takes effect on the whole document. Side note: The usage of the \TeX
-primitive syntax |$$| is not recommended.
-
-\clozesetfont{}
-
-\begin{minted}{latex}
-\clozesetfont{}
-$$1 + 1 = \cloze{2}$$
-\clozesetfont{\itshape}
-\end{minted}
-
-$$1 + 1 = \cloze{2}$$
-
-\noindent
-|\[\]| should be used instead.
-
-\begin{minted}{latex}
-\[123 + 456 = \cloze{579}\]
-\end{minted}
-
-\[123 + 456 = \cloze{579}\]
-
-\begin{minted}{latex}
-\begin{displaymath}
-2^{\cloze{2}} = 4
-\end{displaymath}
-\end{minted}
-
-\begin{displaymath}
-2^{\cloze{2}} = 4
-\end{displaymath}
-
-\noindent
-The inline math mode works too:
-
-\begin{minted}{latex}
-${\sqrt[3]{\cloze{8}}} = 2$ and ${\sqrt[\cloze{3}]{\cloze{8}}} = 2$
-\end{minted}
-
-\begin{center}
-${\sqrt[3]{\cloze{8}}} = 2$ and ${\sqrt[\cloze{3}]{\cloze{8}}} = 2$
-\end{center}
-
-\clozesetfont{\itshape}
-
-%%
-% tabbing
-%%
-
-\subsubsection{The \tt{tabbing} environment}
-
-\begin{minted}{latex}
-\begin{tabbing}
-col1 \hspace{1cm} \= col2 \hspace{1cm} \= col3 \hspace{1cm} \= col4 \\
-\cloze{col1} \> \> \clozefix{col3} \\
-\end{tabbing}
-\end{minted}
-
-\begin{example}
-\begin{tabbing}
-col1 \hspace{1cm} \= col2 \hspace{1cm} \= col3 \hspace{1cm} \= col4 \\
-\cloze{col1} \> \> \clozefix{col3} \\
-\end{tabbing}
-\end{example}
-
-%%
-% picture
-%%
-
-\subsubsection{The \tt{picture} environment}
-
-\begin{minted}{latex}
-\begin{picture}(320,100)
-\put(80,25){\cloze{Lorem}}
-\put(160,50){\clozefix{ipsum}}
-\put(240,75){\clozefil{dolor}}
-\end{picture}
-\end{minted}
-
-\begin{example}
-\begin{picture}(320,100)
-\put(80,25){\cloze{Lorem}}
-\put(160,50){\clozefix{ipsum}}
-\put(240,75){\clozefil{dolor}}
-\end{picture}
-\end{example}
-
-%%
-% tabular
-%%
-
-\subsubsection{The \tt{tabular} environment}
-
-\begin{minted}{latex}
-\begin{tabular}{l c}
-\cloze{Lorem} & \cloze{ipsum} \\
-\clozefix{amet} & \clozefix{consectetur} \\
-\cloze{sed} & \cloze{do} \\
-\end{tabular}
-\end{minted}
-
-% No |c| inside because of short verbatim.
-
-\begin{example}
-\clozeset{width=1cm}
-\begin{tabular}{l c}
-\cloze{Lorem} & \cloze{ipsum} \\
-\clozefix{amet} & \clozefix{consectetur} \\
-\cloze{sed} & \cloze{do} \\
-\end{tabular}
-\end{example}
-
-\section{Some graphics for better understanding of the node tree}
-
-\subsection{Paragraph}
-
-\noindent\includegraphics[width=\linewidth]{graphics/par}
-
-\subsection{Tabular environment}
-
-\noindent\includegraphics[width=\linewidth]{graphics/tabular}
-
-\subsection{Picture environment}
-
-\noindent\includegraphics[width=\linewidth]{graphics/picture}
-
-\DocInput{cloze.dtx}
-
-\subsection{The file cloze.lua}
-
-\inputminted{lua}{cloze.lua}
-
-\pagebreak
-\PrintChanges
-\pagebreak
-\PrintIndex
-\end{document}
-%</driver>
-% \fi
-%
-% \CheckSum{0}
-%
-% \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         \~}
-%
-%
-% \changes{v0.1}{2015/06/16}{Converted to DTX file}
-%
-% \changes{v1.0}{2015/07/08}{Inital release}
-%
-% \changes{v1.1}{2016/06/13}{Make cloze compatible to LuaTeX version
-% 0.95}
-%
-% \changes{v1.2}{2016/06/23}{The cloze makros are now working in
-% tabular, tabbing and picture environments}
-%
-% \changes{v1.3}{2017/03/13}{Add the new macros \cmd{\clozenol} and
-% \cmd{\clozeextend} and the environments \texttt{clozebox} and
-% \texttt{clozespace} (This version was not published on CTAN.)}
-%
-% \changes{v1.4}{2020/05/20}{Add the new macro \cmd{\clozestrike} and
-% improve the documentation}
-%
-% \changes{v1.5}{2020/05/27}{
-% The Lua part of the package (cloze.lua) is now being developed in a
-% separate file.
-% The readme file is now a standalone mardown file and not embedded in
-% the dtx file any more.
-% \href{https://github.com/stevedonovan/LDoc}{LDoc} is being used
-% to generate
-% \href{https://josef-friedrich.github.io/cloze}{source code documentation}.
-% This version fixes two bugs (cloze in display math, line color and
-% hide).
-% }
-%
-% \DoNotIndex{\newcommand,\newenvironment,\def,\directlua}
-%
-% \StopEventually{}
-% \pagebreak
-% \section{Implementation}
-%
-% \iffalse
-%<*package>
-% \fi
-% \MacroTopsep = 10pt plus 2pt minus 2pt
-% \MacrocodeTopsep = 10pt plus 1.2pt minus 1pt
-%
-% \makeatletter
-% \c@CodelineNo 25 \relax
-% \makeatother
-%
-% \subsection{The file \tt{cloze.sty}}
-%
-% This packages are used to build \emph{cloze}:
-%
-% \subsubsection{Dependencies}
-%
-% The package \href{https://www.ctan.org/pkg/fontspec}{fontspec} is not
-% necessarily required. When using Lua\LaTeX{} it is good form to load
-% it. Apart from this the package supplies helpful messages, when you
-% compile a Lua\LaTeX{} document with pdf\LaTeX{}.
-%    \begin{macrocode}
-\RequirePackage{fontspec}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/luatexbase}{luatexbase}
-% allows to register multiple Lua callbacks.
-%    \begin{macrocode}
-\RequirePackage{luatexbase-mcb}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/kvoptions}{kvoptions}
-% takes the handling of the options.
-%    \begin{macrocode}
-\RequirePackage{kvoptions}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/setspace}{setspace} is used
-% by the environment |clozespace|.
-%    \begin{macrocode}
-\RequirePackage{setspace}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/xcolor}{xcolor} is required
-% to colorize the text and the line of a gap.
-%    \begin{macrocode}
-\RequirePackage{xcolor}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/xcolor}{xparse} is used by
-% the environment |clozebox|.
-%    \begin{macrocode}
-\RequirePackage{xparse}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/stackengine}{stackengine}
-% is required by the command |\clozestrike{}{}|.
-%    \begin{macrocode}
-\RequirePackage{stackengine}
-%    \end{macrocode}
-% The package \href{https://www.ctan.org/pkg/ulem}{ulem} is required by
-% the command |\clozestrike{}{}|.
-%    \begin{macrocode}
-\RequirePackage{ulem}
-\normalem
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-\RequirePackage{transparent}
-%    \end{macrocode}
-%
-% Load the cloze lua module and put all return values in the variable
-% |cloze|.
-%
-%    \begin{macrocode}
-\directlua{
-  cloze = require('cloze')
-}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-\newif\ifclozeshow\clozeshowtrue
-%    \end{macrocode}
-%
-% \subsubsection{Internal macros}
-%
-% \begin{macro}{\cloze@set@to@global}
-% Set the Lua variable |registry.is_global| to |true|. All options
-% are then stored in the variable |registry.global_options|.
-%    \begin{macrocode}
-\def\cloze@set@to@global{%
- \directlua{cloze.set_is_global(true)}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@set@to@local}
-% First unset the variable |registry.local_options|. Now set the Lua
-% variable |registry.is_global| to |false|. All options are then stored
-% in the variable |registry.local_options|.
-%    \begin{macrocode}
-\def\cloze@set@to@local{%
-  \directlua{
-    cloze.unset_local_options()
-    cloze.set_is_global(false)
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@set@option}
-% \cmd{\cloze@set@option} is a wrapper for the Lua function
-% |registry.set_option|. \cmd{\cloze@set@option}\oarg{key}\marg{value}
-% sets a key \meta{key} to the value \meta{value}.
-%    \begin{macrocode}
-\def\cloze@set@option[#1]#2{%
-  \directlua{cloze.set_option('#1', '#2')}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@color}
-% Convert a color definiton name to a PDF colorstack string, for example
-% convert the color name |blue| to the colorstack string
-% |0 0 1 rg 0 0 1 RG|. The macro definition |\cloze@color{blue}|
-% builds itself the macro |\color@blue|, which expands to the PDF
-% colorstack string. The colorstack string is necessary to generate a
-% PDF colorstack whatsit.
-%    \begin{macrocode}
-\def\cloze@color#1{\csname\string\color@#1\endcsname}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@set@local@options}
-% This macro is used in all cloze commands to handle the optional
-% arguments. First it sets the option storage to local and then it
-% commits the options to the package \emph{kvoptions} via the macro
-% |\kvsetkeys{CLZ}{}|.
-%    \begin{macrocode}
-\def\cloze@set@local@options#1{%
-  \cloze@set@to@local%
-  \kvsetkeys{CLZ}{#1}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@start@marker}
-% At the begining |\cloze@start@marker| registers the required Lua
-% callbacks. Then it inserts a whatsit marker which marks the begin of a
-% gap.
-%    \begin{macrocode}
-\def\cloze@start@marker#1{%
-  \strut\directlua{
-    cloze.register('#1')
-    cloze.marker('#1', 'start')
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@stop@marker}
-% \cmd{\cloze@stop@marker} inserts a whatsit marker that marks the end
-% of gap.
-%    \begin{macrocode}
-\def\cloze@stop@marker#1{%
-  \strut\directlua{
-    cloze.marker('#1', 'stop')
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@margin}
-% \cmd{\cloze@margin} surrounds a text in a gap with two |kerns|.
-%    \begin{macrocode}
-\def\cloze@margin#1{%
-  \directlua{cloze.margin()}%
-  #1%
-  \directlua{cloze.margin()}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \subsubsection{Options}
-%
-% \emph{cloze} offers key-value pairs to use as options. For processing
-% the key-value pairs we use the package
-% \href{https://www.ctan.org/pkg/kvoptions}{kvoptions}.
-% To make all key-value pairs accessibly to Lua code, we use the
-% declaration
-% \cmd{\define@key}\marg{CLZ}\marg{option}\oarg[]\marg{\dots}. This
-% declaration comes from the package
-% \href{https://www.ctan.org/pkg/keyval}{keyval}.
-%
-% At start all values are declared as global options. At the Lua side
-% all values are now stored in the |registry.global_options| table.
-%
-%    \begin{macrocode}
-\cloze@set@to@global
-%    \end{macrocode}
-%
-% We use the abbreviation |CLZ| for \emph{cloze} as family name and
-% prefix.
-%
-%    \begin{macrocode}
-\SetupKeyvalOptions{
-  family=CLZ,
-  prefix=CLZ@
-}
-%    \end{macrocode}
-%
-% \paragraph{\tt{align}}
-%
-% \noindent Please read the section \secref{sec:option-align} how to use
-% the option |align|. |align| affects only the command \cmd{\clozefix}
-% \secref{sec:command-clozefix}.
-%
-%    \begin{macrocode}
-\DeclareStringOption{align}
-\define@key{CLZ}{align}[]{\cloze@set@option[align]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{boxheight}}
-%
-% \noindent Please read the section \secref{sec:sec:command-clozebox}
-% how to use the option |boxheight|. |boxheight| affects only the
-% environment \cmd{clozebox}.
-% \secref{sec:command-clozefix}.
-%
-%    \begin{macrocode}
-\DeclareStringOption{boxheight}
-\define@key{CLZ}{boxheight}[]{\cloze@set@option[boxheight]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{boxwidth}}
-%
-% \noindent Please read the section \secref{sec:sec:command-clozebox}
-% how to use the option |boxwidth|. |boxwidth| affects only the
-% environment \cmd{clozebox}.
-% \secref{sec:command-clozefix}.
-%
-%    \begin{macrocode}
-\DeclareStringOption{boxwidth}
-\define@key{CLZ}{boxwidth}[]{\cloze@set@option[boxwidth]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{distance}}
-%
-% \noindent Please read the section \secref{sec:option-distance} how to
-% use the option |distance|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{distance}
-\define@key{CLZ}{distance}[]{\cloze@set@option[distance]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{hide}}
-%
-% \noindent If the option |hide| appears in the commands, |hide| will be
-% set to \emph{true} and |show| to \emph{false} on the Lua side. Please
-% read the section \secref{sec:option-hide} how to use the option
-% |hide|.
-%
-%    \begin{macrocode}
-\DeclareVoidOption{hide}{%
-  \clozeshowfalse%
-  \cloze@set@option[hide]{true}%
-  \cloze@set@option[show]{false}%
-}
-%    \end{macrocode}
-%
-% \paragraph{\tt{linecolor}}
-%
-% \noindent Please read the section \secref{sec:option-linecolor} how to
-% use the option |linecolor|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{linecolor}
-\define@key{CLZ}{linecolor}[]{%
-  \cloze@set@option[linecolor]{\cloze@color{#1}}%
-  \cloze@set@option[linecolor_name]{#1}%
-}
-%    \end{macrocode}
-%
-% \paragraph{\tt{margin}}
-%
-% \noindent Please read the section \secref{sec:option-margin} how to
-% use the option |margin|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{margin}
-\define@key{CLZ}{margin}[]{\cloze@set@option[margin]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{show}}
-%
-% \noindent If the option |show| appears in the commands, |show| will be
-% set to \emph{true} and |true| to \emph{false} on the Lua side. Please
-% read the section \secref{sec:option-show} how to use the option
-% |show|.
-%
-%    \begin{macrocode}
-\DeclareVoidOption{show}{%
-  \clozeshowtrue%
-  \cloze@set@option[show]{true}%
-  \cloze@set@option[hide]{false}%
-}
-%    \end{macrocode}
-%
-% \paragraph{\tt{spacing}}
-%
-% \noindent Please read the section \secref{sec:option-spacing} how to
-% use the option |spacing|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{spacing}
-\define@key{CLZ}{spacing}[]{\cloze@set@option[spacing]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{textcolor}}
-%
-% \noindent Please read the section \secref{sec:option-textcolor} how to
-% use the option |textcolor|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{textcolor}
-\define@key{CLZ}{textcolor}[]{%
-  \cloze@set@option[textcolor]{\cloze@color{#1}}%
-  \cloze@set@option[textcolor_name]{#1}%
-}
-%    \end{macrocode}
-%
-% \paragraph{\tt{thickness}}
-%
-% \noindent Please read the section \secref{sec:option-thickness} how to
-% use the option |thickness|.
-%
-%    \begin{macrocode}
-\DeclareStringOption{thickness}
-\define@key{CLZ}{thickness}[]{\cloze@set@option[thickness]{#1}}
-%    \end{macrocode}
-%
-% \paragraph{\tt{width}}
-%
-% \noindent Please read the section \secref{sec:option-width} how to use
-% the option |width|. |width| affects only the command \cmd{\clozefix}
-% \secref{sec:command-clozefix}.
-%
-%    \begin{macrocode}
-\DeclareStringOption{width}
-\define@key{CLZ}{width}[]{\cloze@set@option[width]{#1}}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-\ProcessKeyvalOptions{CLZ}
-%    \end{macrocode}
-%
-% \subsubsection{Public macros}
-%
-% All public macros are prefixed with |\cloze|.
-%
-% \begin{macro}{\clozeset}
-% The usage of the command \cmd{\clozeset} is described in detail in
-% section \secref{sec:command-clozeset}.
-%    \begin{macrocode}
-\newcommand{\clozeset}[1]{%
-  \cloze@set@to@global%
-  \kvsetkeys{CLZ}{#1}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozereset}
-% The usage of the command \cmd{\clozereset} is described in detail in
-% section \secref{sec:command-clozereset}.
-%    \begin{macrocode}
-\newcommand{\clozereset}{%
-  \directlua{cloze.reset()}
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozeshow}
-% The usage of the command \cmd{\clozeshow} is described in detail in
-% section \secref{sec:command-clozeshow}.
-%    \begin{macrocode}
-\newcommand{\clozeshow}{%
-  \clozeset{show}
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozehide}
-% The usage of the command \cmd{\clozehide} is described in detail in
-% section \secref{sec:command-clozehide}.
-%    \begin{macrocode}
-\newcommand{\clozehide}{%
-  \clozeset{hide}
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozefont}
-% The usage of the command \cmd{\clozefont} is described in detail in
-% section \secref{sec:command-clozefont}.
-%    \begin{macrocode}
-\newcommand{\clozefont}{\itshape}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozesetfont}
-% The usage of the command \cmd{\clozesetfont} is described in detail in
-% section \secref{sec:command-clozesetfont}.
-%    \begin{macrocode}
-\newcommand{\clozesetfont}[1]{%
-  \renewcommand{\clozefont}[1]{%
-    #1%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze}
-% The usage of the command \cmd{\cloze} is described in detail in
-% section \secref{sec:command-cloze}.
-%    \begin{macrocode}
-\newcommand{\cloze}[2][]{%
-  \cloze@set@local@options{#1}%
-  \cloze@start@marker{basic}%
-  {%
-    \clozefont\relax%
-    \cloze@margin{#2}%
-  }%
-  \cloze@stop@marker{basic}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozefix}
-% The usage of the command \cmd{\clozefix} is described in detail in
-% section \secref{sec:command-clozefix}.
-%    \begin{macrocode}
-\newcommand{\clozefix}[2][]{%
-  \cloze@set@local@options{#1}%
-  \cloze@start@marker{fix}%
-  {%
-    \clozefont\relax%
-    \cloze@margin{#2}%
-  }%
-  \cloze@stop@marker{fix}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozenol}
-% The usage of the command \cmd{\clozenol} is described in detail in
-% section \secref{sec:command-clozenol}.
-% TODO: Realize this macro with lua code, without ugly |\color{white}|.
-% command.
-%    \begin{macrocode}
-\newcommand{\clozenol}[2][]{%
-  {%
-    \cloze@set@local@options{#1}%
-    \clozefont\relax%
-    \ifclozeshow%
-      \color{\directlua{tex.print(cloze.get_value('textcolor_name'))}}%
-    \else%
-      \color{white}%
-    \fi%
-    #2%
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{environment}{clozepar}
-% The usage of the environment |clozepar| is described in detail in
-% section \secref{sec:command-clozepar}.
-%    \begin{macrocode}
-\newenvironment{clozepar}[1][]%
-{%
-  \par%
-  \cloze@set@local@options{#1}%
-  \cloze@start@marker{par}%
-  \clozefont\relax%
-}%
-{%
-  \cloze@stop@marker{par}%
-  \par%
-  \directlua{cloze.unregister('par')}%
-}
-%    \end{macrocode}
-% \end{environment}
-%
-% \begin{macro}{\cloze@get@value}
-%    \begin{macrocode}
-\newcommand{\cloze@get@value}[1]{%
-  \directlua{
-    tex.print(cloze.get_value('#1'))
-  }%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{environment}{clozebox}
-% The usage of the environment |clozebox| is described in detail in
-% section \secref{sec:command-clozebox}.
-% TODO: Realize this macro with lua code, without ugly |\color{white}|
-% command.
-%    \begin{macrocode}
-\newsavebox{\cloze@box}
-\NewDocumentEnvironment{clozebox}{ s O{} +b}{%
-  \cloze@set@local@options{#2}%
-  \noindent%
-  \begin{lrbox}{\cloze@box}%
-  \directlua{
-    local boxheight = cloze.get_value('boxheight')
-    local boxwidth = cloze.get_value('boxwidth')
-    if boxheight then
-      tex.print('\\begin{minipage}[t][' .. boxheight .. '][t]{' .. boxwidth .. '}')
-    else
-      tex.print('\\begin{minipage}[t]{' .. boxwidth .. '}')
-    end
-  }
-    \clozefont\relax%
-    \ifclozeshow%
-      \color{\directlua{tex.print(cloze.get_value('textcolor_name'))}}#3%
-    \else%
-      \color{white}#3%
-    \fi%
-  \end{minipage}%
-  \end{lrbox}%
-  \IfBooleanTF{#1}%
-    {\usebox{\cloze@box}}%
-    {\fbox{\usebox{\cloze@box}}}%
-}{}
-%    \end{macrocode}
-% \end{environment}
-%
-% \begin{environment}{clozespace}
-% The usage of the environment |clozespace| is described in detail in
-% section \secref{sec:command-clozespace}.
-% TODO: Realization without setspace package.
-%    \begin{macrocode}
-\newenvironment{clozespace}[1][]%
-{%
-  \cloze@set@local@options{#1}%
-  \begin{spacing}{\directlua{tex.print(cloze.get_value('spacing'))}}%
-}{\end{spacing}}
-%    \end{macrocode}
-% \end{environment}
-%
-% \begin{macro}{\clozefil}
-% The usage of the command \cmd{\clozefil} is described in detail in
-% section \secref{sec:command-clozefil}.
-%    \begin{macrocode}
-\newcommand{\clozefil}[2][]{%
-  \cloze[#1]{#2}\clozelinefil[#1]%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozeextend}
-% TODO: Use node library to create kern nodes.
-%    \begin{macrocode}
-\newcommand{\clozeextend}[1][1]{%
-  \directlua{
-    local loop = #1
-    for variable = 1, loop do
-      tex.print(' \string\\hspace{1em} \string\\strut')
-    end
-  }
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozeline}
-% The usage of the command \cmd{\clozeline} is described in detail in
-% section \secref{sec:command-clozeline}.
-%    \begin{macrocode}
-\newcommand{\clozeline}[1][]{%
-  \cloze@set@local@options{#1}%
-  \directlua{cloze.line()}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozelinefil}
-% The usage of the command \cmd{\clozelinefil} is described in detail in
-% section \secref{sec:command-clozelinefil}.
-%    \begin{macrocode}
-\newcommand{\clozelinefil}[1][]{%
-  \cloze@set@local@options{#1}%
-  \strut%
-  \directlua{cloze.linefil()}%
-  \strut%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@text@color}
-%    \begin{macrocode}
-\newcommand{\cloze@text@color}[1]{%
-  \textcolor%
-    {\directlua{tex.print(cloze.get_value('textcolor_name'))}}%
-    {#1}%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\cloze@strike@line}
-%    \begin{macrocode}
-\newcommand\cloze@strike@line{%
-  \bgroup%
-  \markoverwith{%
-    \cloze@text@color{%
-      \rule[0.5ex]{2pt}{1pt}%
-    }%
-  }%
-  \ULon%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\clozestrike}
-%    \begin{macrocode}
-\newcommand{\clozestrike}[3][]{%
-  \cloze@set@local@options{#1}%
-  \ifclozeshow%
-    \stackengine%
-      {\Sstackgap}% \Sstackgap or \Lstackgap or \stackgap or stacklength
-      {\cloze@strike@line{#2}}% anchor
-      {\cloze@text@color{\clozefont{}#3}}% item
-      {O}% O or U
-      {c}% \stackalignment or l or c or r
-      {\quietstack}% \quietstack or T or F
-      {T}% \useanchorwidth or T or F
-      {\stacktype}% \stacktype or S or L
-  \else%
-    \stackengine%
-      {\Sstackgap}% \Sstackgap or \Lstackgap or \stackgap or stacklength
-      {#2}% anchor
-      {\texttransparent{0}{\clozefont{}#3}}% item
-      {O}% O or U
-      {c}% \stackalignment or l or c or r
-      {\quietstack}% \quietstack or T or F
-      {T}% \useanchorwidth or T or F
-      {\stacktype}% \stacktype or S or L
-  \fi%
-}
-%    \end{macrocode}
-% \end{macro}
-%
-% \iffalse
-%</package>
-% \fi
-%
-% \Finale
-\endinput
-- 
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