exercisebank.sty

% Source (with comments) can be found at https://github.com/Strauman/exercisebank/
%% The LaTeX package exercisebank - version v0.2.1-prerelease (2018/09/12) - build 94
%% exercisebank.sty: Exercise bank
%% -------------------------------------------------------------------------------------------
%% Copyright (c) 2018 by Andreas Storvik Strauman <andreas dot s dot strauman at uit dot no>
%% -------------------------------------------------------------------------------------------
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% 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 1.3c or later is part of all distributions of LaTeX
%% version 2008/05/04 or later.
%% This work has the LPPL maintenance status `author-maintained'.
%% This work consists of all files listed in README
\ProvidesPackage{exercisebank}[2018/09/12 v0.2.1-prerelease Creates a setup that gives freedom in making sets and exercises.]
\xdef\exbank@quiet{1}
\def\exercisebankversion{v0.2.1-prerelease - Build 94}
\PackageWarningNoLine{exercisebank-v0.2.1-prerelease}{This package is in the beta stage, and if something unexpected happens please, oh pretty please, report it to https://github.com/Strauman/exercisebank. Thank you!}
\@ifundefined{ownLineNoSpacesGotIt}{\@latex@warning{Compilation wont work unless \string\end{problem} and \string\end{solution} are on their own lines and without any spaces. This warning can be removed by doing \string\def\string\ownLineNoSpacesGotIt{} before \@backslashchar usepackage{exercisebank}}
}{}
\gdef\setExercisesDir#1{\@latex@error{\string\setExercisesDir is deprecated. Use \string\exercisebanksetup{exercise directory=#1} instead}{}\stop\bye
}
\@ifundefined{exercisesDir}{\gdef\@exercisesDir{.}
}{}
\global\let\incl = \input
\usepackage{xstring}
\usepackage{pgffor}
\usepackage{scrextend}
\usepackage{comment}
\usepackage{calc}
\usepackage{pgfpages}
\usepackage{geometry}
\usepackage{listofitems}
\usepackage{trimspaces}
\usepackage{needspace}
\edef\@isTrue{1}
\edef\@isFalse{0}
\gdef\exb@int@isin#1#2#3#4{%
	\def\needle{#1}
	\def\haystack{#2}
	\ifx\haystack\empty\relax#4\else%
		\def\isFalse{0}%
		\let\isInList = \isFalse%
		\IfInteger{\needle}{}{\@latex@error{ISIN: Can't look for part problem that is not numeric: `\needle' in `\haystack'!}{}\bye\stop}%
		\IfInteger{\haystack}{			\ifnum\haystack=\needle\relax%
				#3%
			\else%
				#4%
			\fi%
}{			\foreach\pp in #2{%
					\ifnum\pp=\needle\relax%
						\gdef\isInList{1}%
						#3%
					\fi%
}%
			\if\isInList\isFalse%
				#4%
			\fi%
}%
	\fi}
\gdef\exb@warn{\PackageWarningNoLine{exercisebank-v0.2.1-prerelease}}
\gdef\exb@err#1{\PackageError{exercisebank}{#1}{}}
\newif\ifexb@isInList
\newcounter{exb@isin@dots}
\gdef\exb@isin#1#2#3#4{\@dinfo{running isin}
	\global\exb@isInListfalse
	\xdef\needle{#1}
	\xdef\haystack{#2}
	\def\whenfalse{#4}
	\def\whentrue{#3}
	\ifx\haystack\empty\relax#4\else%
		\readlist*\items\haystack%
		\foreachitem\itm\in\items{%
			\ifnum\pdfstrcmp{\needle}{\itm}=\z@\relax%
				\global\exb@isInListtrue%
				#3\fi%
}%
		\ifexb@isInList\else%
			#4
		\fi\fi%
}
\gdef\strif#1#2{%
	\ifnum\pdfstrcmp{#1}{#2}=\z@\relax%
}
\let\ea = \expandafter
\begingroup\lccode`\|=`\\
\lowercase{\endgroup\def\removebs#1{\if#1|\else#1\fi}}
\gdef\exbank@macroname#1{\expandafter\removebs\string#1}
\gdef\@noneofone#1{}
\gdef\@noneoftwo#1#2{}
{\globaldefs=1\newcommand\@opt@gobble[2][]{}}
\@ifundefined{exbank@verbose}{	\global\let\@dinfo\@gobble
	\global\let\@dinfomode\@opt@gobble
}{	\bgroup
	\globaldefs=1\newcommand\@dinfo[2][]{%
			\@latex@warning{--INFO:#2}%
}%
	\egroup%
}
\@ifundefined{exbank@quiet}{	\gdef\@dlog#1{\@latex@warning{::DEBUG:#1}}%
}{	\global\let\@dlog\@noneofone%
}
\gdef\shownextchar#1{\@latex@warning{NEXT:\string#1}#1}
\newcommand\ex@before[2]{	\edef #1{\unexpanded{#2}\unexpanded\expandafter{#1}}
}
\newcommand{\exb@lmargin}[2]{\strut\vadjust{\exb@domark{#1}{#2}}}
\newcommand{\exb@domark}[2]{%
	\hbox to #2{		\vbox to 0pt{				\kern-\dp\strutbox
				\smash{\llap{#1}}
				\vss
}%
}
}
\newif\ifexb@isintersection
\def\exb@intersection@any#1#2#3#4{%
	\global\exb@isintersectionfalse%
	\edef\listarg{#1}%
	\ifx\listarg\empty\@dlog{RELAX}#4\else%
	\readlist*\needlelist{#1}%
		\foreachitem\needle\in\needlelist{%
			\exb@isin{\needle}{#2}{\global\exb@isintersectiontrue}{}%
}%
		\ifexb@isintersection#3\else#4\fi%
		\fi%
}
\gdef\@makespacesignored{%
\global\let\@oldtilde~%
\gdef~{}%
\global\catcode`\^^M=9\relax%
\global\catcode`\^^J=9\relax%
\global\catcode`\ =9\relax%
}
\gdef\@makespacesnormal{%
\global\let~\@oldtilde%
\global\catcode`\^^M=5\relax%
\global\catcode`\^^J=12\relax%
\global\catcode`\ =10\relax%
}
\let\nextPar\everypar
\newtoks\everypar
\nextPar{\the\everypar}
\def\AtNextPar#1{\nextPar\expandafter{\the\nextPar\nextPar{\the\everypar}#1}}
\edef\@isTrue{1}
\edef\@isFalse{0}
\gdef\ShowNumbers{\gdef\@displayMetaCounter{\isTrue}}
\gdef\exb@showtags{\isFalse}
\gdef\ShowTags{\gdef\exb@showtags{\isTrue}}
\gdef\exb@printCurrentTags{Tags: \exb@currentTags~}
\gdef\ShowFilenames{\At\VeryBeginProblem{\exerciseFile\\}}
\gdef\@DisplaySolutions{\@isFalse}
\gdef\DisplaySolutions{\xdef\@DisplaySolutions{\isTrue}\@latex@warning{Showing solutions}}
\gdef\ifDisplaySolutions{\if\@DisplaySolutions\@isTrue}
\gdef\@SolutionsOnly{\@isFalse}
\gdef\SolutionsOnly{\xdef\@SolutionsOnly{\@isTrue}\DisplaySolutions}
\gdef\exb@currentPoints{0}
\newif\ifexbank@if@needspace
\global\exbank@if@needspacetrue
\pgfkeys{/exbanksetup/.is family, /exbanksetup,
default/.style = {  part problems = On,
  tighten paragraphs = True,
  problem header={\normalsize\Large\bfseries\@tr{Problem}~\theproblemcounter},
  part problem header={\large\textbf{(\theproblemcounter\alph{partproblemcounter})}},
  part problem header suffix={},
  solution header={\large{\textbf{\@tr{Solution}:}}},
  exercise directory=.,
  figure root directory=\@exercisesDir,
  style margins=On,
  problem needs space=0.2\paperheight,
  no needspace/.is if={exbank@if@needspace},
  no needspace/.default = false
},
exercise directory/.estore in = \@exercisesDir, %
figure root directory/.estore in = \@figrootDir, %
front page/.estore in = \exb@frontpage,
front page=\@isFalse,
problem header/.store in = \exbank@opt@problemHeader,
part problem header/.store in = \exbank@opt@partProblemHeader,
solution header/.store in = \exbank@opt@solutionHeader,
problem needs space/.store in = \exbank@opt@problemneedspace,
part problem header suffix/.store in=\exb@partproblem@header@suffix,
part problems/.style = {switches/#1/.get = \exbank@opt@partProblems},
tighten paragraphs/.style = {switches/#1/.get = \exbank@opt@tightenparagraphs},
style margins/.style={switches/#1/.get = \exbank@opt@doMargins},
switches/.cd,
  On/.initial = \@isTrue,
  on/.initial = \@isTrue,
  T/.initial =  \@isTrue,
  True/.initial =  \@isTrue,
  Off/.initial = \@isFalse,
  off/.initial = \@isFalse,
  F/.initial = \@isFalse,
  False/.initial = \@isFalse,
}
\newcommand\exercisebanksetup[1]{  \pgfkeys{/exbanksetup, #1}%
}
\exercisebanksetup{default}
\AtBeginDocument{\xdef\tpd{\the\prevdepth}}
\gdef\tighten@paragraph{%
\if\exbank@opt@tightenparagraphs\@isTrue\relax%
      \filbreak%
\fi%
}
\gdef\tighten@paragraph@solutions{%
\if\exbank@opt@tightenparagraphs\@isTrue\relax%
  \if\@SolutionsOnly\@isFalse
    \if\@DisplaySolutions\@isTrue
      \filbreak%
    \fi
  \fi
\fi%
}
\gdef\tighten@paragraph@always{%
\if\exbank@opt@tightenparagraphs\@isTrue\relax%
\filbreak%
\fi%
}
\pgfkeys{ /exbanki18n/.is family, /exbanki18n,
  default/.style = {Problem = Problem, Solution = Solution},
  Problem/.estore in = \@tr@Problem,
  Solution/.estore in = \@tr@Solution
}
\newcommand{\translateExBank}[1]{  \pgfkeys{/exbanki18n, default, #1}%
}
\translateExBank{}
\gdef\@tr#1{%
\@ifundefined{@tr@#1}{#1}{%
  \csname @tr@#1\endcsname%
}%
}
\let\ea = \expandafter
\begingroup\lccode`\|=`\\
\lowercase{\endgroup\def\removebs#1{\if#1|\else#1\fi}}
\ifcsname at@verbose\endcsname
\global\def\@triggerLog#1{\@latex@warning{--\string\TRIGGER: #1}}%
\else
\global\let\@triggerLog\@gobble%
\fi
\newcommand{\At}[2]{  \edef\mname{\exbank@macroname{#1}}%
  \ifcsname At@\mname\endcsname%
    \ea\g@addto@macro\csname At@\mname\endcsname{#2}%
  \else%
    \ea\gdef\csname At@\mname\endcsname{#2}%
    \AtEndDocument{%
        \expandafter\let\csname At@\mname\endcsname\relax%
}
  \fi%
}
\newcommand{\Trigger}[1]{%
  \edef\mname{\exbank@macroname{#1}}%
  \ea\@ifundefined{At@\mname}{}{%
  \@triggerLog{\mname}\csname At@\mname\endcsname%
}%
}
\xdef\figuresPath{\@figrootDir/}
\gdef\fileInputPath{}
\gdef\fileInputBase{}
\providecommand*{\input@path}{}
\g@addto@macro\input@path{{\fileInputBase}{\fileInputPath}}
\At\PathControl{  \xdef\figuresPath{\@figrootDir/}
  \edef\exfile{\exerciseFile}
  \expandafter\filename@parse{\exfile}
  \xdef\fileInputPath{\figuresPath\filename@area}
  \xdef\fileInputBase{\figuresPath\filename@area\filename@base/}
  \graphicspath{{\fileInputBase}{\fileInputPath}}
  \@ifundefined{input@path}{\gdef\input@path{{\fileInputBase}{\fileInputPath}}}{}
}
\newlength{\pMarginBelow}
\newlength{\pMarginAbove}
\newlength{\pMarginLeft}
\newlength{\ppMarginBelow}
\newlength{\ppMarginAbove}
\newlength{\ppMargin}
\newlength{\introMargin}
\newlength{\solutionMarginLeft}
\newlength{\solutionMarginAbove}
\edef\defaultLeftMargin{\the\dimexpr1in+\hoffset}
\setlength{\ppMargin}{0.5em}
\setlength{\pMarginLeft}{-\ppMargin-2.5em}
\setlength{\solutionMarginLeft}{\ppMargin}
\setlength{\solutionMarginAbove}{1em}
\setlength{\pMarginBelow}{0em}
\setlength{\pMarginAbove}{\baselineskip}
\setlength{\introMargin}{-1.5em}
\setlength{\ppMarginBelow}{\baselineskip}
\setlength{\ppMarginAbove}{0em}
\setlength\parindent{0pt}
\newbox\ppmarkbox
\newlength\markskip
\setlength\markskip{4\baselineskip}
\def\solMargin{\dimexpr\ppMargin\relax}
\def\vsSize{1em}
\def\vs{\vspace{\vsSize}}
\newcounter{problemcounter}
\setcounter{problemcounter}{0}
\newcounter{partproblemcounter}
\At\VeryBeginProblem{%
	\if\exbank@opt@tightenparagraphs\@isTrue\relax%
	\ifexbank@if@needspace\needspace{\exbank@opt@problemneedspace}\fi%
	\vskip-2\baselineskip\relax%
	\fi%
	\stepcounter{problemcounter}%
	\setcounter{partproblemcounter}{0}%
	\vspace*{\pMarginAbove}%
  \strut\vadjust{\vbox to 0pt{\if\exbank@opt@doMargins\@isTrue\hskip\pMarginLeft\fi{\exbank@opt@problemHeader}\vss}}\par%
	\vspace*{\the\dimexpr\baselineskip+\pMarginBelow}%
}
\At\EndProblem{%
\tighten@paragraph%
}%
\At\VeryBeginPartproblem{%
\@dinfo{Triggered Beginning Part Problem (\string\VeryBeginPartproblem)}%
	\stepcounter{partproblemcounter}%
	\@dinfo{Generating title for part problem}%
	\gdef\exb@prePPHead{}%
	\gdef\exb@postPPHead{}%
	\if\@displayMetaCounter\@isTrue\relax%
		\gdef\exb@prePPHead{{\Large\themetacounter}:}%
	\fi%
	\if\exb@showtags\isTrue%
		\gdef\exb@postPPHead{\exb@printCurrentTags}%
	\fi%
\ifnum\pdfstrcmp{\exbank@opt@doMargins}{\@isTrue}=\z@\relax%
\newbox\nobox%
\gdef\exb@pp@lefttag{\leavevmode{\smash{\llap{{\exb@prePPHead\exbank@opt@partProblemHeader\Trigger\PartProblemHeaderSuffix}\hskip\ppMargin}\exb@postPPHead}}}%
\else%
\gdef\exb@pp@lefttag{{\exbank@opt@partProblemHeader\Trigger\PartProblemHeaderSuffix}}%
\fi%
\AtNextPar{\exb@pp@lefttag}%
\ignorespaces}%
\At\EndPartproblem{%
	\vspace*{\pMarginBelow}%
	\tighten@paragraph\par%
}
\At\BeginSolution{\hfill\break\vspace*{\solutionMarginAbove}{\exbank@opt@solutionHeader}}
\At\EndSolution{}
\newif\ifexb@opthides
\providecommand\exb@currentTags{}
\pgfkeys{/exbank/problems/.cd,%
default/.style={hide=false,tag=\relax},%
hide/.is if={exb@opthides},%
tags/.estore in=\exb@currentTags,%
tag/.code={\pgfkeysalso{tags={#1}}}%
}
\def\nextproblem{\pgfqkeys{/exbank/problems}}
\At\EndProblem{%
\if\exbank@opt@tightenparagraphs\@isTrue\relax%
  \if\@SolutionsOnly\@isFalse%
    \if\@DisplaySolutions\@isTrue%
      \penalty-300%
    \fi%
  \fi%
\fi%
}
\@ifundefined{figure}{}{\edef\figure{\unexpanded{\tighten@paragraph@always}\unexpanded\expandafter{\figure}}
}
\@ifundefined{endfigure}{}{\g@addto@macro\endfigure{\tighten@paragraph@always}
}
\gdef\isFalse{0}
\gdef\isTrue{1}
\gdef\DisplayProblem{\isTrue}
\gdef\@displayMetaCounter{\isFalse}
\AtBeginDocument{  \if\@DisplaySolutions\isFalse
    \@latex@warning{Hiding solutions. Show them with \string\DisplaySolutions}
  \fi
}
\global\let\do@ProcessCutFile = \ProcessCutFile
\newif\ifexb@isdisplaying
\newif\ifexb@hidenextsol
\global\exb@hidenextsolfalse
\gdef\exb@ifshowproblem#1#2{\exb@isdisplayingfalse\ifnum\pdfstrcmp{\DisplayProblem}{\@isTrue}=\z@\ifexb@opthides\else\exb@isdisplayingtrue\fi\fi%
\ifexb@isdisplaying#1\else#2\fi}
\gdef\showhideproblem#1{%
\exb@ifshowproblem{\let\ProcessCutFile\do@ProcessCutFile#1\global\exb@hidenextsolfalse}{\def\ProcessCutFile{}\global\exb@hidenextsoltrue}%
}
\generalcomment{problem}{%
  \edef\DisplaySolution{\@DisplaySolutions}%
  \stepcounter{metacounter}%
  \@dinfo{problem: Triggering \string\DecideProblemDisplay}%
  \Trigger\DecideProblemDisplay%
  \@dinfo{problem:Executing - \string\showhideproblem}%
     \showhideproblem{%
        \if\exbank@opt@partProblems\isTrue
            \Trigger\BeginPartproblem%
            \Trigger\VeryBeginPartproblem%
        \else%
            \Trigger\BeginProblem%
            \Trigger\VeryBeginProblem%
        \fi%
}%
}{\@dinfo{Ending problem env}%
    \if\DisplayProblem\@isTrue\relax%
      \if\exbank@opt@partProblems\@isTrue\relax%
        \Trigger\EndPartproblem%
        \tighten@paragraph\fi%
      \else
        \Trigger\EndProblem%
    \fi%
\@dinfo{Ended problem env}%
}
\g@addto@macro\AfterproblemComment{\nextproblem{default}\ignorespaces}%
\generalcomment{solution}{\@dinfo{START solution ENV}%
\Trigger\AtBeginSolutionHard
\begingroup
  \if\@DisplaySolutions\isTrue
    \if\DisplayProblem\isFalse
      \xdef\DisplaySolution{\isFalse}
    \fi
  \fi
  \if\DisplaySolution\isTrue
    \ifexb@hidenextsol\else\Trigger\BeginSolution\fi
  \else
    \def\ProcessCutFile{}
  \fi
}{%
\if\DisplaySolution\isTrue
\Trigger\EndSolution
\tighten@paragraph@solutions
\vspace*{0.5em}
\fi
\endgroup
\Trigger\EndSolutionHard\@dinfo{END solution ENV}%
}
\g@addto@macro\AftersolutionComment{\ignorespaces}
\def\intromargin#1{%
\if\exbank@opt@doMargins\@isTrue%
\gdef\endintromargin{\endlist\endgroup}%
\begingroup\list{}{\leftmargin#1}\item[]%
\else%
\relax\global\let\endintromargin=\relax\fi%
}
\generalcomment{intro}{\@dinfo{START intro ENV}%
  \if\@countIntros\isTrue%
    \stepcounter{metacounter}%
    \Trigger\DecideProblemDisplay%
    \gdef\exb@pre@intro{}%
    \gdef\exb@post@intro{}%
    \if\@displayMetaCounter\isTrue\relax%
    \gdef\exb@pre@intro{{\leavevmode{\llap{{\Large\themetacounter}:\hspace*{-\pMarginLeft}}}}\ignorespaces}%
    \fi%
    \if\exb@showtags\isTrue%
    \xdef\exb@post@intro{\exb@printCurrentTags}%
    \fi%
    \if\@spriteMode\@isTrue%
      \if\introarg\@isTrue%
        \stepcounter{partproblemcounter}%
      \fi%
    \fi%
    \gdef\@displayIntro{\@isFalse}
    \showhideproblem{%
      \tighten@paragraph%
      \Trigger\BeginIntro\exb@pre@intro\exb@post@intro%
      \gdef\@displayIntro{\@isTrue}
}%
  \exb@ifshowproblem{\intromargin{-1em}}{}
  \else%
  \intromargin{-1em}
  \fi%
}{  \if\@countIntros\isTrue%
    \Trigger\EndIntro%
    \exb@ifshowproblem{\endintromargin}{}
  \else
    \endintromargin
  \fi%
  \@dinfo{END intro ENV}\ignorespaces%
}
\g@addto@macro\AfterintroComment{\nextproblem{default}\ignorespaces}
\def\squeeze{  \newlength{\marginw}
  \setlength{\marginw}{1.5cm}
  \newgeometry{margin=\marginw}
  \renewcommand{\topfraction}{0.85}
  \renewcommand{\bottomfraction}{0.85}
  \renewcommand{\textfraction}{0.1}
  \renewcommand{\floatpagefraction}{0.85}
  \renewcommand{\dbltopfraction}{0.85}
  \renewcommand{\dblfloatpagefraction}{.85}
  \setcounter{topnumber}{25}
  \setcounter{bottomnumber}{25}
  \setcounter{totalnumber}{25}
  \setcounter{dbltopnumber}{25}
  \renewcommand{\baselinestretch}{0.9}
  \let\markeverypar\everypar
  \newtoks\everypar
  \everypar\markeverypar
  \markeverypar{\the\everypar\looseness=-1\relax}
  \g@addto@macro\define@newfont{%
    \fontdimen2\font@name=0.8\fontdimen2\font@name
}%
  \fontdimen2\font@name=0.8\fontdimen2\font@name
    \thinmuskip=0mu plus 3mu
    \medmuskip=1mu plus 4mu
    \thickmuskip=2mu plus 5mu
    \abovedisplayskip=0pt plus 3pt
    \belowdisplayskip=0pt plus 3pt
    \abovedisplayshortskip=0pt plus 3pt
    \belowdisplayshortskip=0pt plus 3pt
}
\let\ea = \expandafter
\newcounter{metacounter}
\setcounter{metacounter}{0}
\gdef\exb@emptyList{0}
\newif\ifexb@tagbuildmode
\global\exb@tagbuildmodefalse
\global\let\emptyList\exb@emptyList
\global\let\exb@tagList\exb@emptyList
\gdef\ifppMode#1{  \def\mname{\exbank@macroname{#1}}
  \strif\mname\ppMode
}
\gdef\isppMode#1#2{  \edef\mname{\exbank@macroname{#1}}
  \strif{\exbank@macroname{#1}}{\ppMode}\relax#2\fi
}
\gdef\@ifppMode#1{%
\ifnum\pdfstrcmp{\exbank@macroname{#1}}{\ppMode}=\z@%
\expandafter\@firstofone%
\else%
\expandafter\@noneofone%
\fi%
}%
\def\pm@Exclude{exclude}
\def\pm@Select{select}
\def\pm@Normal{normal}
\let\ipm\@ifppMode
\let\T@\isTrue
\let\F@\isFalse
\At\DecideProblemDisplay{%
    \ifnum\pdfstrcmp{\ppList}{\emptyList}=\z@\relax%
      \xdef\DisplayProblem{\ipm\exclude\T@\ipm\select\F@}
    \fi
    \exb@int@isin{\themetacounter}{\ppList}{      \xdef\DisplayProblem{\ipm\exclude\F@\ipm\select\T@\ipm\normal\T@}
}{      \xdef\DisplayProblem{\ipm\exclude\T@\ipm\select\F@\ipm\normal\T@}
}
\ifexb@tagbuildmode
\ifnum\pdfstrcmp{\DisplayProblem}{\T@}=\z@\relax%
\exb@intersection@any{\exb@currentTags}{\exb@tagList}{\global\exb@opthidesfalse}{\global\exb@opthidestrue}%
\fi
\fi
}
\gdef\introarg{\@isFalse}
\gdef\noheadarg{\@isFalse}
\pgfkeys{ /makeset/.is family, /makeset,
 default/.style = {},
 intro/.style = {introarg=\@isTrue},
 nointro/.style = {introarg=\@isFalse},
 nohead/.style = {noheadarg=\@isTrue},
 head/.style = {noheadarg=\@isFalse},
 introarg/.estore in = \introarg,
 noheadarg/.estore in = \noheadarg
}
\gdef\makesetdefaults#1{%
\edef\exb@setpgfkeys{{\unexpanded\expandafter{/makeset/default/.style = {#1}}}}%
\expandafter\pgfkeys\exb@setpgfkeys%
}
\pgfkeys{/makeset/override/.cd,
intro/.code = {\gdef\introarg{\@isTrue}\ea\gdef\csname setlist@\exb@currentSetID @intro\endcsname{\@isTrue}},
nointro/.code = {\gdef\introarg{\@isFalse}\ea\gdef\csname setlist@\exb@currentSetID @intro\endcsname{\@isFalse}},
nohead/.code = {\gdef\noheadarg{\@isTrue}\ea\gdef\csname setlist@\exb@currentSetID @nohead\endcsname{\@isTrue}}
}
\gdef\@listOfSets{}
\gdef\@spriteMode{\isFalse}
\gdef\exbank@spriteSets{\emptyList}
\long\gdef\spritesets#1{  \gdef\exbank@spriteSets{#1}
}
\global\let\exlist@protect\noexpand
\newcommand\makeset[3][]{  \xdef\thissetid{#2}
  \ea\xdef\csname setkeys@\thissetid\endcsname{#1}
  \pgfkeys{/makeset, default, #1}%
  \if\introarg\isTrue%
    \gdef\introarg{\isTrue}
    \ea\gdef\csname setlist@#2@intro\endcsname{\isTrue}
  \fi
  \if\noheadarg\isTrue%
    \ea\gdef\csname setlist@#2@nohead\endcsname{\isTrue}
  \fi
  \ea\gdef\csname setlist@#2\endcsname{\exlist@protect{#3}}
  \def\setmacro{\unexpanded\expandafter{\csname setlist@#2\endcsname}}
  \g@addto@macro\@listOfSets{,#2}
}
\long\gdef\about#1{}
\newcommand\sprite[1][4]{\squeeze
\gdef\@spriteMode{\isTrue}
\long\def\about##1{{\Large\textbf{About}:\\[1.1em]##1\\[1.5em]}}
\pgfpagesuselayout{#1 on 1}[a4paper,border shrink=5mm]
\ifnum\pdfstrcmp{\exbank@spriteSets}{\emptyList}=\z@\relax%
  \edef\sprite@setlist{\ea\@secondoftwo\@listOfSets}
  \readlist*\list@sprite@setlist\sprite@setlist
  \foreachitem\set\in\list@sprite@setlist{    \edef\theset{{\set}}
    \if\theset\empty\relax\else%
    \buildset{\set}%
    \fi%
}
\else
  \edef\sprite@setlist{\exbank@spriteSets}
  \readlist*\list@sprite@setlist\sprite@setlist
  \foreachitem\set\in\list@sprite@setlist{    \edef\theset{{\set}}
    \if\theset\empty\relax\else%
    \buildex{\set}%
    \fi%
}
\fi
}
\gdef\exbank@setEnv@normal#1{\exbank@setEnv{#1}{normal}
}
\newcommand{\exbank@setEnv}[3][{-1}]{  \if\@spriteMode\isFalse%
    \gdef\ppList{#1}
    \gdef\exerciseFile{#2}
    \gdef\ppMode{#3}
  \else
    \gdef\ppList{\emptyList}
    \gdef\exerciseFile{#2}
    \gdef\ppMode{\pm@Normal}
  \fi
}
\global\let\ex@protect\noexpand
\long\gdef\exec#1{:\ex@protect{#1}}
\gdef\exb@def@makeset@cmd#1{\@ifnextchar[{\@exb@def@makeset@cmd{#1}}{\@exb@def@makeset@cmd{#1}[0]}}
\gdef\@exb@def@makeset@cmd#1[#2]#3{\def\ncArgs{#1[#2]}%
\bgroup\globaldefs=1\ea\newcommand\ncArgs{\exec{#3}}\egroup%
}
\def\exbank@def@makeset@command{\exb@warn{\string\exbank@def@makeset@command\space is deprecated and will be removed in versions >= 0.3.0. Use \string\exb@def@makeset@cmd}\exb@def@makeset@cmd}
\let\DeclareExerciseCommand\exb@def@makeset@cmd
\newcommand{\exclude}[2]{[{#2}]{#1}{exclude}}
\newcommand{\select}[2]{[{#2}]{#1}{select}}
\newcommand{\orderedselect}[2]{%
\readlist*\thelist\csv@list%
\foreachitem\items\in\thelist{[{\item}]{#1},}%
}
\let\exbank@isFirstProblem\isTrue
\exb@def@makeset@cmd{\phead}{  \if\exbank@isFirstProblem\isTrue%
    \let\exbank@isFirstProblem\isFalse%
  \else%
    \Trigger\EndProblem%
  \fi%
  \Trigger\BeginProblem%
  \Trigger\VeryBeginProblem%
}
\exb@def@makeset@cmd{\pheadarg}[1]{  \if\exbank@isFirstProblem\isTrue%
    \let\exbank@isFirstProblem\isFalse%
  \else%
    \Trigger\EndProblem%
  \fi%
  \Trigger\BeginProblem%
  \bgroup\def\theproblemcounter{#1}\Trigger\VeryBeginProblem\egroup%
}
\exb@def@makeset@cmd{\pbreak}{\clearpage}
\gdef\buildex#1{  \makeset{#1}{#1}
  \buildset{#1}
}
\gdef\@countIntros{\isFalse}
\gdef\exb@setpgf#1{%
\edef\keystring{{/makeset,default,#1}}%
\ea\pgfkeys\keystring}
\newcommand\buildset[2][]{%
  \xdef\exb@currentSetID{#2}%
  \pgfkeys{/makeset/override/.cd, #1}
  \global\let\setName\exb@currentSetID%
  \gdef\exb@buildset@oarg{#1}
  \@ifundefined{setlist@#2@intro}{\gdef\@countIntros{\isFalse}}{\gdef\@countIntros{\isTrue}}%
  \@ifundefined{setlist@#2@nohead}{\gdef\nohead{\isFalse}}{\gdef\nohead{\isTrue}}%
  \ifcsname setkeys@\setName\endcsname%
  \xdef\skeys{\csname setkeys@#2\endcsname}%
  \exb@setpgf\skeys%
  \fi%
  \@ifundefined{setlist@#2}{%
    \@latex@error{Couldn't find set #2. Did you remember to do \string\makeset{#2}{}?}
    \stop\bye
}{}
  \let\exlist@protect\unexpanded%
  \edef\exbank@setlist{\csname setlist@#2\endcsname}%
  \let\exlist@protect\noexpand%
  \if\@spriteMode\isFalse%
    \if\exb@frontpage\@isFalse\else\input{\exb@frontpage}\fi
    \Trigger\StartBuildset%
  \fi%
  \gdef\@delegateFileInfo{\@ifnextchar?\@execute@makeset@command\@is@exec}%
  \def\@is@exec{\@ifnextchar:\@execute@exec\@is@file}%
  \gdef\@is@file{\@ifnextchar[\exb@setEnv@withOptargs\X@exb@setEnv}%
  \gdef\X@exb@setEnv##1{%
    \def\continueLoop{\isTrue}%
    \@dinfo{Processing normal file "\exerciseFileInfo.tex"}%
    \exbank@setEnv@normal{\exerciseFileInfo}\bgroup\nullfont%
}
  \gdef\exb@setEnv@withOptargs{%
    \def\continueLoop{\isTrue}\ea\exbank@setEnv\exerciseFileInfo\bgroup\nullfont%
}
  \gdef\@execute@makeset@command ?##1{%
    \edef\inner{\@firstofone##1}%
    \@dinfo{Executing macro \@backslashchar\@gobble##1}%
    \csname\inner\endcsname%
    #1\def\continueLoop{\isFalse}\ea\bgroup%
}
  \def\@execute@exec:{%
    \def\continueLoop{\isFalse}\@dinfo{Executing custom command}\bgroup%
}
  \readlist*\setlist\exbank@setlist%
  \foreachitem\exerciseFileInfo\in\setlist{%
    \def\continueLoop{\isTrue}%
    \gdef\ppList{\emptyList}%
    \setcounter{metacounter}{0}%
    \let\ex@protect\unexpanded%
    \edef\exerciseFileInfo{\exerciseFileInfo}%
    \ea\@delegateFileInfo\exerciseFileInfo\egroup%
    \Trigger\InputExercise%
    \if\continueLoop\isTrue%
    \let\ex@protect\noexpand%
  \Trigger\PathControl%
    \if\nohead\isFalse%
      \if\@spriteMode\isFalse%
        \Trigger\BeginProblem%
      \fi%
    \fi%
    \if\nohead\isFalse\Trigger\VeryBeginProblem\fi%
    \if\@spriteMode\isTrue\textbf{\exerciseFile.tex\\}\fi%
    \IfFileExists{\@exercisesDir/\exerciseFile}{%
      \incl{\@exercisesDir/\exerciseFile}%
      \if\@spriteMode\isTrue%
        \setcounter{partproblemcounter}{0}%
      \fi%
}{      \@latex@error{Could not find \@exercisesDir/\exerciseFile. Maybe it is because the default exercise directory is now changed to the same directory that your main file is in. To set default exercise directory to exercises, do \string\exercisebanksetup{exercise directory=exercises}}{}
      \stop\bye
}
    \if\nohead\isFalse\Trigger\EndProblem\fi%
    \fi%
}
  \if\@spriteMode\isFalse%
    \Trigger\EndBuildset%
  \fi%
  \setcounter{problemcounter}{0}%
  \setcounter{partproblemcounter}{0}%
  \clearpage%
}
\newcommand\buildsets[2][]{%
	\xdef\csvlist{#2}%
	\readlist*\items\csvlist%
	\foreachitem\set\in\items{%
		\buildset[#1]{\set}%
}
}
\newcommand\buildtags[2]{%
  \global\exb@tagbuildmodetrue
  \xdef\csvtags{#1}%
  \xdef\csvlist{#2}
	\xdef\csvsets{#2}%
	\readlist*\tagsItems\csvtags%
  \readlist*\setsItems\csvsets%
	\foreachitem\set\in\setsItems{%
    \xdef\exb@tagList{\csvtags}
		\buildset{\set}%
}
  \global\exb@tagbuildmodefalse
}
\newcommand\refcounter[1]{\edef\@currentlabel{#1}%
}
\DeclareRobustCommand{\pplabel}[1]{	\refcounter{\theproblemcounter}\label{pr:\exerciseFile:#1}
	\refcounter{\alph{partproblemcounter}}\label{pp:\exerciseFile:#1}
}
\let\pptag = \pplabel
\newcommand\pppref[1]{%
(\ea\@alph\ref{pp:\exerciseFile:#1})\relax%
}
\newcommand\ppref[1]{%
(\ref{pr:\exerciseFile:#1}\ref{pp:\exerciseFile:#1})\relax%
}
\newcommand\pref[1]{%
\ref{pr:\exerciseFile:#1}\relax%
}
\gdef\exb@currentPoints{0}
\gdef\exb@currentPointsStyle{}
\newif\ifexb@enablepoints\global\exb@enablepointstrue
\exercisebanksetup{%
current points style/.store in=\exb@currentPointsStyle,
current points style={\ifnum\exb@currentPoints=\z@\ifnum\totalpoints=\z@\else\phantom{0p}\fi\else\exb@currentPoints p\fi\ignorespaces},
disable points/.is if={exb@enablepoints}
}
\ifexb@enablepoints
\AtEndDocument{%
\immediate\write\@auxout{\string\gdef\string\totalpoints{\the\c@exb@points}}%
}
\At\PartProblemHeaderSuffix{\exb@currentPointsStyle}
\fi
\newcounter{exb@points}
\setcounter{exb@points}{0}
\providecommand\totalpoints{}
\nextproblem{points/.store in=\exb@currentPoints}
\At\BeginPartproblem{\addtocounter{exb@points}\exb@currentPoints}
\At\EndPartproblem{\gdef\exb@currentPoints{0}}