%% exercisesheets.sty
%% Copyright 2008-2023 Sebastian Kuhnert, Frank Fuhlbrück
%
% 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 https://www.latex-project.org/lppl.txt and
% version 1.3c 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 Frank Fuhlbrück.
%
% This work consists of the files listed in README.
%\NeedsTeXFormat{LaTeX2e}[1994/12/01]
% don't forget to update the version and date in exercisesheets.tex
\def\exsh@version{0.17}
\def\exsh@date{2024/04/23}
\ProvidesPackage{exercisesheets}[\exsh@date\space\exsh@version\space Typesetting of exercise sheets]
\message{`Typesetting of exercise sheets' \exsh@version\space <\exsh@date>}
% TODO: fix "above hint skip"
\RequirePackage{etoolbox}%[2008/06/28]
\RequirePackage{scrlfile}
\RequirePackage{environ}
\RequirePackage{pgfkeys}
\RequirePackage{keyval}
\RequirePackage{kvoptions}
\RequirePackage{ifthen}
\RequirePackage{ifluatex}
\RequirePackage{amsmath}
\RequirePackage{currfile}
\RequirePackage{catchfile}
%we need getrefnumber
\RequirePackage{refcount}
% configuration keys
\newif\ifexsh@beamer
\@ifclassloaded{beamer}{\exsh@beamertrue}{}
\newif\ifexsh@html
\@ifclassloaded{tex4ht}{\exsh@htmltrue}{}
\ifdefined\HCode
\exsh@htmltrue
\fi
\ifexsh@html
\def\exsh@inshtml#1{\HCode{#1}}
\else
\def\exsh@inshtml#1{}
\fi
\newif\ifexsh@patchenumerate\exsh@patchenumeratetrue
\newif\ifexsh@settitle\exsh@settitletrue
\newif\ifexsh@patchpagenumbers\exsh@patchpagenumberstrue
\newif\ifexsh@patchheadandfoot\exsh@patchheadandfoottrue
\newif\ifexsh@usestartsection\exsh@usestartsectiontrue
\newif\ifexsh@firstexonsheet
\def\exsh@firstexonsheettrue{\global\let\ifexsh@firstexonsheet\iftrue}
\def\exsh@firstexonsheetfalse{\global\let\ifexsh@firstexonsheet\iffalse}
\newif\ifexsh@savetasks
\newif\ifexsh@solutions
\newif\ifexsh@oralsolutions
\newif\ifexsh@nonoralsolutions
\newif\ifexsh@samplesolutions
\newif\ifexsh@exnumsheet
\newif\ifexsh@forcesample %force printing sample sol. of wrong type
%For beamer only
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\newif\ifexsh@beamerwithheadline
\newif\ifexsh@beamerwithfootline
\newif\ifexsh@beameruseblocks
\newif\ifexsh@defersolutiontitle
\newif\ifexsh@headerrestate
\newif\ifexsh@framed
\newif\ifexsh@fragile
\fi
%Also only true for beamer, but we want to use it elsewhere
\newif\ifexsh@beamersolution
%%
\newif\ifexsh@gradingguides
\newif\ifexsh@inplace
\newif\ifexsh@sample
\newif\ifexsh@hide%currently only set via sample in exercise env.
\newif\ifexsh@pointsfloatright
\newif\ifexsh@bonus
\newif\ifexsh@abbrev
\newif\ifexsh@sumuppoints
\newif\ifexsh@filenameasexercisename
\newif\ifexsh@showtodos
\newif\ifexsh@beamercompatdone
\def\exsh@beamercompatibility{
\ifexsh@beamercompatdone
\PackageError{exercisesheets}{
beamercompatibility used twice}{}%
\else
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
%currently we do nothing if beamer is loaded,
%but this might change
\else%--------- NON-BEAMER: ---------------------------------------
\let\pause\relax
\def\frame{}
\renewcommand{\frame}[1][]{}
\let\endframe\relax
\def\onslide<##1>{}
\def\only<##1>##2{##2}
\def\uncover<##1>##2{##2}
\def\visible<##1>##2{##2}
\def\invisible<##1>##2{##2}
\long\def\alt<##1>##2##3{##2}
\long\def\temporal<##1>##2##3##4{##3}
\let\exsh@origitem\item
\def\exsh@ovrlitem<##1>{\exsh@origitem}
\def\item{\@ifnextchar<\exsh@ovrlitem\exsh@origitem}
\let\exsh@origitemize\itemize
\def\exsh@ovrlitemize[##1]{\exsh@origitemize}
\def\itemize{\@ifnextchar[\exsh@ovrlitemize\exsh@origitemize}
\let\exsh@origenumerate\enumerate
\def\exsh@ovrlenumerate[##1]{\exsh@origenumerate}
\def\enumerate{\@ifnextchar[\exsh@ovrlenumerate\exsh@origenumerate}
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\exsh@beamercompatdonetrue
\fi
}
\pgfkeys{/exsh/.is family,/exsh,
patchenumerate/.is if=exsh@patchenumerate,
patchenumerate/.default=true,
settitle/.is if=exsh@settitle,
settitle/.default=true,
patchpagenumbers/.is if=exsh@patchpagenumbers,
patchpagenumbers/.default=true,
usestartsection/.is if=exsh@usestartsection,
usestartsection/.default=true,
embedded/.code={%
\exsh@patchenumeratefalse
\exsh@settitlefalse
\exsh@patchpagenumbersfalse
\exsh@patchheadandfootfalse
\exsh@usestartsectionfalse
\pgfkeysalso{secnumdepth=keep}%
\def\exhs@sheetnoheader[##1]##2{}%
\newcounter{exshsheet}
\newcounter{exshexercise}
\pgfkeysalso{
sheet sectioning cmd=\exhs@sheetnoheader,
sheet counter=exshsheet,
exercise counter=exshexercise,
sheet start page action=\relax,
sheet end page action=\relax,
}%
},
minskips/.code={%
\pgfkeysalso{
above sheet title skip=0pt,
below sheet header skip=0pt,
above first exercise skip=0pt,
below exercise title skip=0pt,
}%
},
savetasks/.is if=exsh@savetasks,
savetasks/.default=true,
solutions/.is choice,
solutions/true/.code=\exsh@solutionstrue\exsh@oralsolutionstrue\exsh@nonoralsolutionstrue,
solutions/oral/.code=\exsh@solutionstrue\exsh@oralsolutionstrue\exsh@nonoralsolutionsfalse,
solutions/nonoral/.code=\exsh@solutionstrue\exsh@oralsolutionsfalse\exsh@nonoralsolutionstrue,
solutions/sample nonoral/.code=\exsh@solutionstrue\exsh@oralsolutionsfalse\exsh@nonoralsolutionstrue\exsh@samplesolutionstrue,
solutions/sample oral/.code=\exsh@solutionstrue\exsh@oralsolutionstrue\exsh@nonoralsolutionsfalse\exsh@samplesolutionstrue,
solutions/sample all/.code=\exsh@solutionstrue\exsh@oralsolutionstrue\exsh@nonoralsolutionstrue\exsh@samplesolutionstrue,
solutions/false/.code=\exsh@solutionsfalse\exsh@oralsolutionsfalse\exsh@nonoralsolutionsfalse,
solutions/.default=true,
number within sheet/.is if=exsh@exnumsheet,
number within sheet/.default=true,
forcesample/.is if=exsh@forcesample,
forcesample/.default=true,
gradingguides/.is if=exsh@gradingguides,
gradingguides/.default=true,
only/.initial={-},
all/.style={/exsh/only={-}},all/.value forbidden,
solutionsby/.code={\def\exsh@solutionsby{#1}},
solutionsby/.value required,
exercisespath/.code={\def\exsh@exercisespath{#1}},
exercisespath/.value required,
bonus/.is if=exsh@bonus,
bonus/.default=true,
inplace/.is if=exsh@inplace,
inplace/.default=true,
sample/.is if=exsh@sample,
sample/.default=true,
showtodos/.is if=exsh@showtodos,
showtodos/.default=true,
filenameasexercisename/.is if=exsh@filenameasexercisename,
filenameasexercisename/.default=true,
pointsfloatright/.is if=exsh@pointsfloatright,
pointsfloatright/.default=true,
abbrev/.is if=exsh@abbrev,
abbrev/.default=true,
beamercompatibility/.default={ignore},
beamercompatibility/.initial={ignore},
beamercompatibility/.code={\exsh@beamercompatibility}
}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\pgfkeys{exsh,
beamerwithheadline/.is if=exsh@beamerwithheadline,
beamerwithheadline/.default=true,
beamerwithfootline/.is if=exsh@beamerwithfootline,
beamerwithfootline/.default=true,
beameruseblocks/.is if=exsh@beameruseblocks,
beameruseblocks/.default=true,
beamersolution/.is if=exsh@beamersolution,
beamersolution/.default=true,
defersolutiontitle/.is if=exsh@defersolutiontitle,
defersolutiontitle/.default=true,
headerrestate/.is if=exsh@headerrestate,
headerrestate/.default=true,
framed/.is if=exsh@framed,
framed/.default=true,
fragile/.is if=exsh@fragile,
fragile/.default=true,
beamersolution/.initial={false},
beamerwithheadline/.initial={false},
beamerwithfootline/.initial={false},
beameruseblocks/.initial={false},
defersolutiontitle/.initial={false},
headerrestate/.initial={false},
framed/.initial={false},
}
\else%--------- NON-BEAMER: ---------------------------------------
\pgfkeys{exsh,
beamerwithheadline/.default={ignore},
beamerwithheadline/.initial={ignore},
beamerwithfootline/.default={ignore},
beamerwithfootline/.initial={ignore},
beamersolution/.default={ignore},
beamersolution/.initial={ignore},
defersolutiontitle/.default={ignore},
defersolutiontitle/.initial={ignore},
headerrestate/.default={ignore},
headerrestate/.initial={ignore},
framed/.default={ignore},
framed/.initial={ignore},
framed/.code={\let\newframe\relax},
fragile/.default={ignore},
fragile/.initial={ignore},
}
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% store title data for sheet headers
\ifundef\subject{% \subject is only provided by KOMA classes
\newcommand{\subject}[1]{}%
\def\@subject{}%
}{}
% beamer has subject, but not \@subject:
\providecommand{\@subject}{}
\apptocmd{\subject}{\pgfkeys{/exsh/subject={#1}}}{}{}%
\ifdefempty{\@subject}{
\pgfkeys{exsh,subject/.initial={\PackageWarning{exercisesheets}{No \string\subject\space given}}}
}{
\pgfkeys{/exsh/subject/.initial/.expand once=\@subject}
}
\ifdefstring{\@date}{\today}{
\pgfkeys{/exsh/semester/.initial={\PackageWarning{exercisesheets}{No semester given in \string\date}}}
}{
\pgfkeys{/exsh/semester/.initial/.expand once=\@date}
}
\let\@exsh@origdate\date
\renewcommand{\date}[1]{\@exsh@origdate{#1}\pgfkeys{/exsh/semester={#1}}}
% this breaks (likely because of detokenization):
% -> missing \begin{document}
% \apptocmd{\date}{\pgfkeys{/exsh/semester={#1}}}{}{}
\pgfkeys{/exsh/author/.code={%
\def\exsh@author{#1}%
\def\exsh@repeat{1}%
\loop\ifnum\exsh@repeat>0
\def\exsh@repeat{0}%
\patchcmd{\exsh@author}{\and}{, }{\def\exsh@repeat{1}}{}%
\repeat
},
/exsh/author/.expand once=\@author}
\let\exsh@oldauthor\author
\def\author#1{\exsh@oldauthor{#1}\pgfkeys{/exsh/author={#1}}}
% helper macro for automatic language selection
\newif\ifexsh@provideonly
\def\exsh@deforprovide#1#2{%
\ifthenelse{\(\NOT\boolean{exsh@provideonly}\)
\OR \equal{}{\pgfkeysvalueof{#1}}}{%
\pgfkeys{#1=#2}%
}{}%
}
\pgfkeys{exsh,
%general package options
patchenumerate/.initial=true,
settitle/.initial=true,
patchpagenumbers/.initial=true,
custom skip macro/.initial=\exsh@skipcustomstuff,
showtodos/.initial={false},
hidetodos/.style={/exsh/showtodos=false},
hidetodos/.value forbidden,
% additional sheet info
title/.initial={},
date/.initial={},
note/.initial={},
exauthor/.initial={\exsh@author},
number within sheet/.initial={false},
%
% additional exercise info
name/.initial={},
forcesample/.initial={false},
firstline/.initial={},
points/.initial={},
oral/.style={/exsh/points=oral},oral/.value forbidden,
inplace/.initial={false},
sample/.initial={false},
filenameasexercisename/.initial={false},
pointsfloatright/.initial={false},
bonus/.initial={false},
nobonus/.style={/exsh/bonus=false},nobonus/.value forbidden,
abbrev/.initial={false},
noabbrev/.style={/exsh/abbrev=false},noabbrev/.value forbidden,
pointsinfo/.initial={},
optional/.style={/exsh/pointsinfo=\ifexsh@abbrev%
\pgfkeysvalueof{/exsh/strings/optional abbrev}%
\else%
\pgfkeysvalueof{/exsh/strings/optional}%
\fi},
optional/.value forbidden,
exercisemark/.initial={},
difficult/.style={/exsh/exercisemark=*},difficult/.value forbidden,
savetasks/.initial=false,
}
\pgfkeys{exsh,
%
% translatable strings
strings/sheet/.initial={},
strings/sheets/.initial={},
strings/solutions/.initial={},
strings/solutionsby/.initial={},
strings/gradingguide/.initial={},
strings/exercise/.initial={},
strings/solution/.initial={},
strings/idea/.initial={},
strings/hint/.initial={},
strings/remark/.initial={},
strings/oral/.initial={},
strings/oral abbrev/.initial={},
strings/point/.initial={},
strings/points/.initial={},
strings/points abbrev/.initial={},
strings/bonus point/.initial={},
strings/bonus points/.initial={},
strings/bonus points abbrev/.initial={},
strings/optional/.initial={},
strings/optional abbrev/.initial={},
%
% languages: predifined string sets
language/.is choice,
language/german/.code={%
\exsh@deforprovide{/exsh/strings/sheet} {\"Ubungsblatt}%
\exsh@deforprovide{/exsh/strings/sheets} {\"Ubungsbl\"atter}%
\exsh@deforprovide{/exsh/strings/solutions} {L\"osungsvorschl\"age}%
\exsh@deforprovide{/exsh/strings/solutionsby} {L\"osungen von}%
\exsh@deforprovide{/exsh/strings/gradingguide}{Bepunktung}%
\exsh@deforprovide{/exsh/strings/exercise} {Aufgabe}%
\exsh@deforprovide{/exsh/strings/solution} {L\"osung}%
\exsh@deforprovide{/exsh/strings/idea} {L\"osungsidee}%
\exsh@deforprovide{/exsh/strings/hint} {Hinweis}%
\exsh@deforprovide{/exsh/strings/remark} {Bemerkung}%
\exsh@deforprovide{/exsh/strings/oral} {m\"undlich}%
\exsh@deforprovide{/exsh/strings/oral abbrev} {mdl.}%
\exsh@deforprovide{/exsh/strings/point} {Punkt}%
\exsh@deforprovide{/exsh/strings/points} {Punkte}%
\exsh@deforprovide{/exsh/strings/points abbrev}{P.}%
\exsh@deforprovide{/exsh/strings/bonus point} {Zusatzpunkt}%
\exsh@deforprovide{/exsh/strings/bonus points}{Zusatzpunkte}%
\exsh@deforprovide{/exsh/strings/bonus points abbrev}{ZP.}%
\exsh@deforprovide{/exsh/strings/optional} {optional}%
\exsh@deforprovide{/exsh/strings/optional abbrev} {opt.}%
},language/german/.value forbidden,
language/ngerman/.style={/exsh/language/german=#1},
language/english/.code={%
\exsh@deforprovide{/exsh/strings/sheet} {Exercise Sheet}%
\exsh@deforprovide{/exsh/strings/sheets} {Exercise Sheets}%
\exsh@deforprovide{/exsh/strings/solutions} {Suggested Solutions}%
\exsh@deforprovide{/exsh/strings/solutionsby} {Solutions by}%
\exsh@deforprovide{/exsh/strings/gradingguide}{Grading guideline}%
\exsh@deforprovide{/exsh/strings/exercise} {Exercise}%
\exsh@deforprovide{/exsh/strings/solution} {Solution}%
\exsh@deforprovide{/exsh/strings/idea} {Idea for solution}%
\exsh@deforprovide{/exsh/strings/hint} {Hint}%
\exsh@deforprovide{/exsh/strings/remark} {Remark}%
\exsh@deforprovide{/exsh/strings/oral} {oral}%
\exsh@deforprovide{/exsh/strings/oral abbrev} {oral}%
\exsh@deforprovide{/exsh/strings/point} {point}%
\exsh@deforprovide{/exsh/strings/points} {points}%
\exsh@deforprovide{/exsh/strings/points abbrev}{p.}%
\exsh@deforprovide{/exsh/strings/bonus point} {bonus point}%
\exsh@deforprovide{/exsh/strings/bonus points}{bonus points}%
\exsh@deforprovide{/exsh/strings/bonus points abbrev}{b.p.}%
\exsh@deforprovide{/exsh/strings/optional} {optional}%
\exsh@deforprovide{/exsh/strings/optional abbrev} {opt.}%
},language/english/.value forbidden,
language/.unknown/.code={%
\PackageWarning{exercisesheets}{Unknown language \pgfkeyscurrentname.
Defaulting to English.}{}%
\pgfkeys{/exsh/language=english}%
},
%
% alternate strings
idea/.style={/exsh/strings/solution=\pgfkeysvalueof{/exsh/strings/idea}},
remark/.style={/exsh/strings/hint=\pgfkeysvalueof{/exsh/strings/remark}},
%
% hooks
every sheet/.code={},
every exercise/.code={},
every solution/.code={},
every hint/.code={},
%
% sectioning cmds and counters for sheet and exercise
% sheet sectioning cmd must take an optional
% and a mandatory argument
sheet sectioning cmd/.initial={\part},
sheet counter/.initial={part},
secnumdepth/.initial={-1},
exercise counter/.initial={section},
%
% font specifications
sheet header font/.initial=\normalfont\normalsize,
subject font/.initial=\scshape,
author font/.initial=\scshape,
semester font/.initial={},
date font/.initial={},
solutionsby font/.initial=\itshape,
sheet note font/.initial=\itshape\bfseries,
sheet title font/.initial=\Large\bfseries,
exercise title font/.initial=\bfseries,
points font/.initial=\itshape,
main task font/.initial={},
subtask font/.initial={},
task restate font/.initial=\itshape,
hint font/.initial={},
hint title font/.initial=\itshape,
solution font/.initial={},
solution title font/.initial=\bfseries,
solution title separator/.initial={:\par},
grading guide font/.initial=\itshape,
todo marker font/.initial=\ifdef{\color}{\color{red}}{}\bfseries,
%
% skip values
below slide headline skip/.initial={0mm},
above sheet title skip/.initial={4ex},
above sheet note skip/.initial={.7ex},
above solutionsby skip/.initial={1ex},
below sheet header skip/.initial={4ex plus 1ex minus .5ex},
above exercise skip/.initial={3ex plus 1ex minus .5em},
above first exercise skip/.initial={3ex plus 1ex minus .5em},
below exercise title skip/.initial={\parskip},
above solution skip/.initial={1ex},
above hint skip/.initial={1ex},
%
% page handling
sheet start page action/.initial={\clearpage},
sheet end page action/.initial={\clearpage},
%
% conditionals
ifsolutions/.code 2 args={\ifsolutions{\pgfkeysalso{#1}}{\pgfkeysalso{#2}}},
iforalsolutions/.code 2 args={\iforalsolutions{\pgfkeysalso{#1}}{\pgfkeysalso{#2}}},
ifnonoralsolutions/.code 2 args={\ifnonoralsolutions{\pgfkeysalso{#1}}{\pgfkeysalso{#2}}},
}
% default values
\pgfkeys{exsh,solutions=false,all}
% process package options
\@expandtwoargs\pgfqkeys{/exsh}{\csname opt@exercisesheets.sty\endcsname}
% mark options as processed
\expandafter\undef\csname opt@exercisesheets.sty\endcsname
% allow further keys to be set
\def\exshset#1{\pgfkeys{exsh,#1}}
%%%%%%%%%%%%%%% BEGIN BEAMER-ONLY: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\define@key{beamerframe}{t}[true]{% top
\beamer@frametopskip=-2pt\relax%
\beamer@framebottomskip=0pt plus 1fill\relax%
\beamer@frametopskipautobreak=\beamer@frametopskip\relax%
\beamer@framebottomskipautobreak=\beamer@framebottomskip\relax%
}
\fi
%%%%%%%%%%%%%%% END BEAMER-ONLY %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% automatic language selection
\AfterEndPreamble{%
\exsh@provideonlytrue
\ifdef{\bbl@main@language}{%
\pgfkeys{/exsh/language=\bbl@main@language}%
}{%
\pgfkeys{/exsh/language=english}%
}%
\exsh@provideonlyfalse
}%
% range checks
\newif\ifexsh@isinrange
\newif\ifexsh@singularrange
\def\exsh@checkrange#1{%
\edef\exsh@range@entry{#1}%
\def\exsh@range@curstart{}%
\exsh@isinrangefalse
\exsh@singularrangetrue
\pgfkeysgetvalue{/exsh/only}{\exsh@temp}%
\ifthenelse{\equal{-}{\exsh@temp}}{%
\exsh@isinrangetrue
\ifnumequal{\exsh@lastsheet}{1}{%
\exsh@singularrangetrue
}{%
\exsh@singularrangefalse
}%
}{%
\expandafter\exsh@range@parsestart\exsh@temp\exsh@range@end
}%
}
\def\exsh@range@parsestart#1{%
\ifstrequal{#1}{,}{%
\exsh@singularrangefalse
\ifdefstring{\exsh@range@curstart}{last}{%
\let\exsh@range@curstart\exsh@lastsheet
}{}%
\ifdefequal{\exsh@range@entry}{\exsh@range@curstart}{%
\exsh@isinrangetrue
}{}%
\def\exsh@range@curstart{}%
\exsh@range@parsestart
}{%
\ifstrequal{#1}{\exsh@range@end}{%
\ifdefstring{\exsh@range@curstart}{last}{%
\let\exsh@range@curstart\exsh@lastsheet
}{}%
\ifdefequal{\exsh@range@entry}{\exsh@range@curstart}{%
\exsh@isinrangetrue
}{}%
}{%
\ifdefequal{#1}{-}{%
\exsh@singularrangefalse
\ifdefstring{\exsh@range@curstart}{}{%
\def\exsh@range@curstart{0}%
}{}%
\ifdefstring{\exsh@range@curstart}{last}{%
\let\exsh@range@curstart\exsh@lastsheet
}{}%
\def\exsh@range@curend{}%
\exsh@range@parseend
}{%
\appto{\exsh@range@curstart}{#1}%
\exsh@range@parsestart
}%
}%
}%
}
\def\exsh@range@parseend#1{%
\ifstrequal{#1}{,}{%
\ifdefstring{\exsh@range@curend}{last}{%
\def\exsh@range@curend{10000}%
}{}%
\ifdefstring{\exsh@range@curend}{}{
\def\exsh@range@curend{10000}%
}{}%
\ifthenelse{\NOT \(\exsh@range@curstart > \exsh@range@entry
\OR \exsh@range@entry > \exsh@range@curend\)}{%
\exsh@isinrangetrue
}{}%
\def\exsh@range@curstart{}%
\exsh@range@parsestart
}{%
\ifstrequal{#1}{\exsh@range@end}{%
\ifdefstring{\exsh@range@curend}{last}{%
\def\exsh@range@curend{10000}%
}{}%
\ifdefstring{\exsh@range@curend}{}{
\def\exsh@range@curend{10000}%
}{}%
\ifthenelse{\NOT \(\exsh@range@curstart > \exsh@range@entry
\OR \exsh@range@entry > \exsh@range@curend\)}{%
\exsh@isinrangetrue
}{%
}%
}{%
\appto{\exsh@range@curend}{#1}%
\exsh@range@parseend
}%
}%
}
% remember last sheet (for range checks)
\def\exsh@lastsheet{0}% to be overridden in aux file
\AtEndDocument{%
\immediate\write\@auxout{\string\gdef\string\exsh@lastsheet{\arabic{\pgfkeysvalueof{/exsh/sheet counter}}}}%
}
\ifexsh@patchpagenumbers
\numberwithin{page}{\pgfkeysvalueof{/exsh/sheet counter}}
\renewcommand{\thepage}{\arabic{page}}%changed for every sheet
\fi
\ifthenelse{\equal{\pgfkeysvalueof{/exsh/secnumdepth}}{keep}}{}{
\setcounter{secnumdepth}{\pgfkeysvalueof{/exsh/secnumdepth}}
}
\AfterPackage*{hyperref}{%
% make PDF destinations unique:
\def\theHsection{\arabic{sheetid}.\arabic{\pgfkeysvalueof{/exsh/exercise counter}}}%
\ifexsh@patchpagenumbers
\def\theHpage{\arabic{sheetid}-\arabic{page}}%
\fi
%
% open bookmarks when typesetting a single sheet
\AtEndPreamble{%
\exsh@checkrange{0}%
\ifexsh@singularrange\hypersetup{bookmarksopen}\fi
}%
}
\ifexsh@settitle
% automatic title selection
\let\exsh@title\relax
\let\exsh@title@new\relax
\def\exsh@write@title#1{%
\xdef\exsh@title@new{\expandonce #1}%
\protected@write\@auxout{}{\string\gdef\string\exsh@title{\expandonce\exsh@title@new}}%
}
\AfterEndDocument{%
\ifthenelse{\equal{\exsh@title}{\exsh@title@new}}{}{%
\@latex@warning@no@line{Label(s) may have changed.
Rerun to get cross-references right}%
}%
}
\AfterEndPreamble{%
\exsh@checkrange{0}%
\ifexsh@singularrange\else
\pgfkeysgetvalue{/exsh/strings/sheets}{\exsh@tmp}%
\exsh@write@title{\exsh@tmp}%
\fi
}
\AtBeginDocument{%
\ifexsh@solutions
\title{\exsh@title: \pgfkeysvalueof{/exsh/strings/solutions}}%
\else
\title{\exsh@title}
\fi
}
\else
\def\exsh@write@title#1{}
\fi
\newcounter{sheetid}% only used to disambiguate hyperref labels
\newenvironment{sheet}[1][]{%
\pgfkeys{exsh,every sheet,#1}%
% \pgfkeysvalueof{/exsh/sheet start page action}%
\stepcounter{sheetid}%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/title}}}{%
\numdef\exsh@tmp{\value{\pgfkeysvalueof{/exsh/sheet counter}}+1}%
\edef\exsh@temp{\expandonce{\pgfkeysvalueof{/exsh/strings/sheet}}\noexpand~\exsh@tmp}%
\pgfkeys{/exsh/title/.expand once={\exsh@temp}}%
\ifexsh@patchpagenumbers
\def\thepage{\arabic{\pgfkeysvalueof{/exsh/sheet counter}}-\arabic{page}}%
\fi
}{%
\ifexsh@patchpagenumbers
\def\thepage{\arabic{page}}%
\fi
}%
\ifexsh@exnumsheet
\edef\exsh@exnumstore{\arabic{\pgfkeysvalueof{/exsh/exercise counter}}}
\setcounter{\pgfkeysvalueof{/exsh/exercise counter}}{0}%
\fi
\numdef\exsh@tmp{\value{\pgfkeysvalueof{/exsh/sheet counter}}+1}%
\exsh@checkrange{\exsh@tmp}%
\ifexsh@isinrange
\ifexsh@singularrange
\pgfkeysgetvalue{/exsh/title}{\exsh@temp}%
\exsh@write@title{\exsh@temp}%
\fi
\exsh@sheethead
\else
\refstepcounter{\pgfkeysvalueof{/exsh/sheet counter}}%
\def\exsh@skipwhat{sheet}\expandafter\exsh@skipstuff
\fi
}{%
\par
\begingroup
\ifnum\value{page}=1\thispagestyle{empty}\fi
\ifexsh@isinrange
\pgfkeysvalueof{/exsh/sheet end page action}%
\fi
\endgroup
\ifexsh@exnumsheet
\setcounter{\pgfkeysvalueof{/exsh/exercise counter}}{\exsh@exnumstore}%
\fi
}
\listadd{\exsh@enums}{enumerate}
\listadd{\exsh@enums}{compactenum}
\listadd{\exsh@enums}{asparaenum}
\listadd{\exsh@enums}{inparaenum}
\listadd{\exsh@enums}{subtasks}
\listadd{\exsh@nonenums}{itemize}
\listadd{\exsh@nonenums}{compactitem}
\listadd{\exsh@nonenums}{asparaitem}
\listadd{\exsh@nonenums}{inparaitem}
\listadd{\exsh@nonenums}{description}
\listadd{\exsh@nonenums}{compactdesc}
\listadd{\exsh@nonenums}{asparadesc}
\listadd{\exsh@nonenums}{inparadesc}
\listadd{\exsh@nonenums}{asparablank}
\listadd{\exsh@nonenums}{inparablank}
\listadd{\exsh@nonenums}{list}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\let\exsh@hyper@itemtrue\relax
\else%--------- NON-BEAMER: ---------------------------------------
\ifexsh@html
\let\exsh@hyper@itemtrue\relax%
\else
\def\exsh@hyper@itemtrue{\@hyper@itemtrue}%
\fi
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%TODO: We need some proper switch-case here
%evaluate csname/csdef+detokenize
\ExplSyntaxOn
\cs_new_eq:NN \exsh@ifsingletoken \tl_if_single_token:nTF
\ExplSyntaxOff
\long\def\exsh@skipstuff#1{%
\exsh@ifsingletoken{#1}{%
\ifstrequal{#1}{\begin}{\exsh@skipstuff@begin}{%
\ifstrequal{#1}{\end}{\exsh@skipstuff@end}{%
\ifstrequal{#1}{\includeexercise}{\exsh@skipstuff@incex}{%
\ifstrequal{#1}{\includeLexercise}{\exsh@skipstuff@incLex}{%
\ifstrequal{#1}{\label}{\exsh@skipstuff@label}{%
\ifstrequal{#1}{\subtask}{\exsh@skipstuff@subtask}{%
\ifstrequal{#1}{\input}{\exsh@skipstuff@input}{%
\ifstrequal{#1}{\exsh@skipstuff@endfile}{\currfile@pop\exsh@skipstuff}{%
\ifstrequal{#1}{\setcounter}{\expandafter\exsh@skipstuff\setcounter}{%
\ifstrequal{#1}{\item}{\ifdef{\@enumctr}{\exsh@hyper@itemtrue\refstepcounter{\@enumctr}}{}}{}%
\pgfkeysvalueof{/exsh/custom skip macro}{#1}}}}}}}}}}%
}{%
\exsh@skipstuff#1%
}%
}%
\let\exshskipcontinue\exsh@skipstuff
\long\def\exsh@skipcustomstuff#1{\exshskipcontinue}
\def\exsh@skipstuff@end#1{%
\expandafter\ifstrequal\expandafter{\exsh@skipwhat}{#1}{%
\expandafter\end\expandafter{\exsh@skipwhat}%
\let\exsh@skipwhat\relax%
}{
\endgroup\exsh@skipstuff%
}%
}
\def\exsh@skipstuff@begin#1{%
\begingroup
\ifstrequal{#1}{Lexercise}{\exsh@skipstuff@Lexercise}{%
\ifstrequal{#1}{exercise}{\refstepcounter{\pgfkeysvalueof{/exsh/exercise counter}}%
% automatic label for the first exercise in every included file
\ifthenelse{\equal{\jobname}{\currfilebase}}{}{%
\ifcsdef{exsh@autolabel@\currfilebase}{}{%
\csdef{exsh@autolabel@\currfilebase}{}%
\exsh@autolabel{ex:\currfilebase}}}%
}{}%
\ifinlist{#1}{\exsh@enums}{%
\exsh@skipstuff@beginenum
}{%
\ifinlist{#1}{\exsh@nonenums}{%
\undef\@enumctr
}{}%
\exsh@skipstuff
}%
}%
}
\def\exsh@skipstuff@beginenum{%
\ifnum\@enumdepth>\thr@@
\@toodeep
\else
\advance\@enumdepth\@ne
\edef\@enumctr{enum\romannumeral\the\@enumdepth}%
\setcounter{\@enumctr}{0}%
\fi
\@ifundefined{@enumlabel@}{%
\exsh@skipstuff
}{%
\@ifnextchar[{\@enumlabel@{\exsh@skipstuff}[}{\exsh@skipstuff}%
}%
}
\def\exsh@skipstuff@label#1{%
% Locally modify \protected@write to use \immediate\write instead.
% This is needed to include labels after the last shipout in the aux file.
\begingroup
\def\protected@write##1##2##3{%
\begingroup
\let\protect\@unexpandable@protect
\immediate\write##1{##3}%
\endgroup
}%
\label{#1}%
\endgroup
\exsh@skipstuff
}
\def\exsh@skipstuff@subtask#1{%
\exsh@skipstuff \item #1
}
\def\exsh@skipstuff@input#1{%
\CatchFileDef{\exsh@inputfilecontent}{#1}{}%
\currfile@push
\currfile@set{#1}%
\expandafter\exsh@skipstuff\exsh@inputfilecontent\exsh@skipstuff@endfile
}
\def\exsh@skipstuff@incex{%
\@ifstar\exsh@skipstuff@incex@@\exsh@skipstuff@incex@%
}
\newcommand{\exsh@skipstuff@incex@}[2][]{%
\exsh@skipstuff\input{%
\ifdefvoid{\exsh@exercisespath}{}{\exsh@exercisespath/}#2}%
}
\newcommand{\exsh@skipstuff@incex@@}[2][]{%
\refstepcounter{\pgfkeysvalueof{/exsh/exercise counter}}
\exsh@autolabel{ex:#2}
\exsh@skipstuff
}
\def\exsh@skipstuff@incLex{%
\@ifstar\exsh@skipstuff@incLex@@\exsh@skipstuff@incLex@%
}
\newcommand{\exsh@skipstuff@incLex@}[2][]{%
\exsh@dlua{
local prefix =
"\ifdefvoid{\exsh@exercisespath}{}{\exsh@exercisespath/}"
exsh_cur_exercise=dofile(prefix .. "#2.lua")
}%
\expandafter\exsh@skipstuff%
\exsh@dlua{exsh_texprintlines(exsh_cur_exercise)}%
}
\let\exsh@skipstuff@incLex@@\exsh@skipstuff@incex@@
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\def\exsh@sheethead{%
\pgfkeysvalueof{/exsh/sheet start page action}%
\pgfkeysgetvalue{/exsh/title}{\exsh@tmp}%
\ifexsh@solutions
\expandafter\edef\expandafter\exsh@tmp{\expandonce\exsh@tmp:\noexpand~\pgfkeysvalueof{/exsh/strings/solutions}}%
\fi
\refstepcounter{\pgfkeysvalueof{/exsh/sheet counter}}%
\begin{frame}
\begin{block}{}
\centering\Large\exsh@tmp
\end{block}
\begingroup
\pgfkeysvalueof{/exsh/sheet header font}%
\ifexsh@solutions%
\ifdefvoid{\exsh@solutionsby}{}{%
\begingroup
\begin{block}{}
\pgfkeysvalueof{/exsh/solutionsby font}%
\vskip\pgfkeysvalueof{/exsh/above solutionsby skip}%
\relax%
\pgfkeysvalueof{/exsh/strings/solutionsby}%
~\exsh@solutionsby\\\unskip%
\end{block}%
\endgroup
}%
\else
\fi
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/note}}}{%
}{%
\ifbool{exsh@samplesolutions}{}{%
\begingroup
\begin{block}{}
\pgfkeysvalueof{/exsh/sheet note font}%
\vskip\pgfkeysvalueof{/exsh/above sheet note skip}\relax
\pgfkeysvalueof{/exsh/note}\\\unskip%
\end{block}%
\endgroup
}%
}%
\endgroup
% \stepcounter{page}%
\end{frame}
}
\global\def\exsh@alignright#1{\hfill #1}%
\else%--------- NON-BEAMER: ---------------------------------------
\ifexsh@html
% \global\def\exsh@part[#1]#2{#2}
% \exshset{sheet sectioning cmd/.initial={\exsh@part}}
\global\def\exsh@alignright#1{%
\exsh@inshtml{}#1%
\exsh@inshtml{}
}
\global\def\exsh@centering#1{%
\exsh@inshtml{}#1%
\exsh@inshtml{}
}
\else
\global\def\exsh@alignright#1{\hfill #1}%
\global\def\exsh@centering#1{\centering #1}
\fi
\def\exsh@sheethead{%
\pgfkeysvalueof{/exsh/sheet start page action}%
\pgfkeysgetvalue{/exsh/title}{\exsh@tmp}%
\ifexsh@solutions
\expandafter\edef\expandafter\exsh@tmp{\expandonce\exsh@tmp:\noexpand~\pgfkeysvalueof{/exsh/strings/solutions}}%
\fi
\refstepcounter{\pgfkeysvalueof{/exsh/sheet counter}}%
\pgfkeysvalueof{/exsh/sheet sectioning cmd}[\pgfkeysvalueof{/exsh/title}]{\normalsize
\pgfkeysvalueof{/exsh/sheet header font}%
\begingroup\raggedright%
{\pgfkeysvalueof{/exsh/subject font}\pgfkeysvalueof{/exsh/subject}}%
\exsh@alignright{\pgfkeysvalueof{/exsh/semester font}%
\pgfkeysvalueof{/exsh/semester}%
}\\
{\pgfkeysvalueof{/exsh/author font}\exsh@author}%
\exsh@alignright{
\pgfkeysvalueof{/exsh/date font}\pgfkeysvalueof{/exsh/date}%
}\\
\vskip\pgfkeysvalueof{/exsh/above sheet title skip}\relax%
\endgroup
\begingroup
\exsh@centering{\pgfkeysvalueof{/exsh/sheet title font}\exsh@tmp\\}\unskip
\endgroup
\begingroup
\pgfkeysvalueof{/exsh/sheet header font}%
\ifexsh@solutions%
\ifdefvoid{\exsh@solutionsby}{}{%
\begingroup
\pgfkeysvalueof{/exsh/solutionsby font}%
\vskip\pgfkeysvalueof{/exsh/above solutionsby skip}\relax
\exsh@centering{\pgfkeysvalueof{/exsh/strings/solutionsby}~\exsh@solutionsby\\}\unskip%
\endgroup
}%
\else
\fi
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/note}}}{%
}{%
\ifbool{exsh@samplesolutions}{}{%
\begingroup
\pgfkeysvalueof{/exsh/sheet note font}%
\vskip\pgfkeysvalueof{/exsh/above sheet note skip}\relax
\exsh@centering{\pgfkeysvalueof{/exsh/note}\\}\unskip%
\endgroup
}%
}%
\endgroup
}%
\ifdim\z@=\pgfkeysvalueof{/exsh/below sheet header skip}\relax
\vskip-\parskip
\else
\unskip\vskip\pgfkeysvalueof{/exsh/below sheet header skip}\relax
\fi
% \unskip
% \vskip\pgfkeysvalueof{/exsh/below sheet header skip}\relax
\exsh@firstexonsheettrue
\ifexsh@patchpagenumbers%
\stepcounter{page}%
\fi
}%
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifdef{\othersectionslevelsformat}{%
\renewcommand{\othersectionlevelsformat}[1]{%
\ifstrequal{#1}{section}%
{}%
{\csname the#1\endcsname\autodot\enskip}}%
}{}
%Do not use \let here as \label may change before its use
\def\exsh@autolabel{\label}
\def\inexlabel{\label}
\newcounter{exsh@pts@cur}
\newcounter{exsh@ptsbonus@cur}
\newenvironment*{exercise}[1][]{%
% TODO: \edef is not safe with luatex and umlauts, only fixed for "oral" for now
% TODO: check whether the TODO above is still relevant
%\edef seams to work fine with lualatex from TeXLive 2020
\pgfkeys{exsh,every exercise,#1,includeoverride}%
\ifthenelse{\equal{sum}{\pgfkeysvalueof{/exsh/points}}}{%
\ifcsname exsh@sumpts@\the\numexpr\arabic{\pgfkeysvalueof{/exsh/exercise counter}}+1\endcsname
\edef\exsh@sumpts{%
\csname exsh@sumpts@\the\numexpr\arabic{\pgfkeysvalueof{/exsh/exercise counter}}+1%
\endcsname%
}%
\edef\exsh@sumptsbonus{%
\csname exsh@sumptsbonus@\the\numexpr\arabic{\pgfkeysvalueof{/exsh/exercise counter}}+1%
\endcsname%
}%
\ifnumequal{\exsh@sumpts}{0}{%
\ifnumequal{\exsh@sumptsbonus}{0}{}{%
\edef\exsh@sumpts{\exsh@sumptsbonus}%
\exshset{bonus}%
}%
}{%
\ifnumequal{\exsh@sumptsbonus}{0}{}{%
\edef\exsh@sumpts{\exsh@sumpts+\exsh@sumptsbonus}%
}%
}%
\else%
\def\exsh@sumpts{??}%
\fi%
\exshset{points/.expanded={\exsh@sumpts}}
\setcounter{exsh@pts@cur}{0}
\setcounter{exsh@ptsbonus@cur}{0}
\exsh@sumuppointstrue%
}{%
\exsh@sumuppointsfalse%
}%
\ifthenelse{\equal{off}{\pgfkeysvalueof{/exsh/points}}}{%
\def\exsh@points{}%
\def\exsh@shortpoints{}%
}{%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/points}}}{%
\edef\exsh@points{\pgfkeysvalueof{/exsh/pointsinfo}}%
}{%
\ifthenelse{\equal{oral}{\pgfkeysvalueof{/exsh/points}}}{%
\ifexsh@abbrev%
\pgfkeysgetvalue{/exsh/strings/oral abbrev}{\exsh@points}%
\else%
\pgfkeysgetvalue{/exsh/strings/oral}{\exsh@points}%
\fi%
}{%
\ifexsh@abbrev%
\ifexsh@bonus%
\edef\exsh@points{\pgfkeysvalueof{/exsh/points} \pgfkeysvalueof{/exsh/strings/bonus points abbrev}}%
\else%
\edef\exsh@points{\pgfkeysvalueof{/exsh/points} \pgfkeysvalueof{/exsh/strings/points abbrev}}%
\fi%
\else%
\ifthenelse{\equal{1}{\pgfkeysvalueof{/exsh/points}}}{%
\ifexsh@bonus%
\edef\exsh@points{1 \pgfkeysvalueof{/exsh/strings/bonus point}}%
\else%
\edef\exsh@points{1 \pgfkeysvalueof{/exsh/strings/point}}%
\fi%
}{%
\ifexsh@bonus%
\edef\exsh@points{\pgfkeysvalueof{/exsh/points} \pgfkeysvalueof{/exsh/strings/bonus points}}%
\else%
\edef\exsh@points{\pgfkeysvalueof{/exsh/points} \pgfkeysvalueof{/exsh/strings/points}}%
\fi%
}%
\fi%
}%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/pointsinfo}}}{}{%
\edef\exsh@points{\expandonce\exsh@points, \pgfkeysvalueof{/exsh/pointsinfo}}%
}%
}%
\ifthenelse{\equal{}{\exsh@points}}{%
\def\exsh@shortpoints{}%
}{%
\edef\exsh@shortpoints{ (\expandonce\exsh@points)}%
}%
% \preto\exsh@points{
% \exsh@inshtml{}\hfill
% \enskip\exsh@alignright\bgroup%
% \pgfkeysvalueof{/exsh/points font}}%
% \appto\exsh@points{\egroup\exsh@inshtml{}}%
\edef\exsh@points{\exsh@alignright{%
\pgfkeysvalueof{/exsh/points font}\expandonce\exsh@points
}}
}%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/firstline}}}{%
\def\exsh@firstline{}%
}{%
\def\exsh@firstline{\pgfkeysvalueof{/exsh/firstline}}%
\preto\exsh@firstline{\quad\bgroup\normalfont\normalsize}%
\appto\exsh@firstline{\egroup}%
}%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/name}}}{%
\def\exsh@exname{}%
\def\exsh@shortexname{}%
}{%
\edef\exsh@exname{\space(\pgfkeysvalueof{/exsh/name})}%
\edef\exsh@shortexname{:\space\pgfkeysvalueof{/exsh/name}}%
}%
\refstepcounter{\pgfkeysvalueof{/exsh/exercise counter}}%
\edef\exsh@tmp{[\pgfkeysvalueof{/exsh/strings/exercise} \arabic{\pgfkeysvalueof{/exsh/exercise counter}}\exsh@shortexname\expandonce\exsh@shortpoints]}%
\ifbool{exsh@samplesolutions}{\ifbool{exsh@sample}{\exsh@hidefalse}{\exsh@hidetrue}}{\exsh@hidefalse}%
\ifbool{exsh@hide}{%
\def\exsh@skipwhat{exercise}\exsh@skipstuff%
}{%
\expandafter\exsh@startheader\exsh@tmp{\noindent%
\hbox to 0pt{\hss\pgfkeysvalueof{/exsh/exercisemark}}%
\pgfkeysvalueof{/exsh/strings/exercise}~\arabic{\pgfkeysvalueof{/exsh/exercise counter}}\exsh@exname\exsh@firstline\expandonce\exsh@points}%
\ifdim\z@=\pgfkeysvalueof{/exsh/below exercise title skip}\relax
\vskip-\parskip
\else
\unskip\vskip\pgfkeysvalueof{/exsh/below exercise title skip}\relax
\fi
\@afterindentfalse
% automatic label for the first exercise in every included file
\ifthenelse{\equal{\jobname}{\currfilebase}}{}{%
\ifcsdef{exsh@autolabel@\currfilebase}{}{%
\csdef{exsh@autolabel@\currfilebase}{}%
\exsh@autolabel{ex:\currfilebase}}}%
% Use \leavevmode to ensure proper distances above environments that start
% with a new \par. Make sure that a \label does not mess up the layout.
\@ifnextchar\label{\exsh@label}{\leavevmode\ignorespaces}%
}%
}{%
%before writing point sums check that we actually computed them
\ifexsh@sumuppoints%
\immediate\write\@auxout{
\string\expandafter\gdef%
\detokenize{\csname} exsh@sumpts@\arabic{\pgfkeysvalueof{/exsh/exercise counter}}\endcsname{%
\arabic{exsh@pts@cur}%
}%
\string\expandafter\gdef%
\detokenize{\csname} exsh@sumptsbonus@\arabic{\pgfkeysvalueof{/exsh/exercise counter}}\endcsname{%
\arabic{exsh@ptsbonus@cur}%
}%
}%
\fi
\ifexsh@beamer\clearpage\fi%%%% <<<< y
\def\exsh@subexn#1{%
\if\getrefnumber{#1}0%
0%
\else%x.y->y, then inverse \@alph
\the\numexpr(\expandafter\expandafter\expandafter%
\expandafter\expandafter\expandafter%
\expandafter`\expandafter\expandafter\expandafter%
\exsh@afterdot\getrefnumber{#1}-`a+1)\relax%
\fi%
}
}
\AfterPackage*{paralist}{
\setdefaultenum{(a)}{(1)}{i.}{A.}
}
\AfterPackage*{enumitem}{
\setenumerate[1]{label=(\alph*)}
\setenumerate[2]{label=(\arabic*)}
\setenumerate[3]{label=\roman*.}
\setenumerate[4]{label=\Alph.}
}
\def\theHenumi{enumi.\arabic{\pgfkeysvalueof{/exsh/sheet counter}}.\arabic{\pgfkeysvalueof{/exsh/exercise counter}}.\arabic{enumi}}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
% code below breaks [] argument after \begin{enumerate}
% when beamer is used
% in beamer we set item labels separately
% see beamer specific def. of \exsh@startheader
\else%--------- NON-BEAMER: ---------------------------------------
\AtEndPreamble{%
\@ifpackageloaded{paralist}{}{%
\@ifpackageloaded{enumitem}{}{%
\apptocmd{\enumerate}{
\ifnum\@enumdepth=1%
\def\labelenumi{(\alph{enumi})}
\def\labelenumii{\arabic{enumii}.}
\def\labelenumiii{\roman{enumiii}.}
\fi
}{}{}%
}%
}%
}%
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\fi
\newcommand{\subexnref}[1]{\exsh@subexn{#1}}
\newcommand{\subexlref}[1]{(\@alph{\exsh@subexn{#1}})}
%for now this is not part of the public interface
\exshset{subtask counter/.initial={enumi}}
\exshset{subtask environment/.initial={enumerate}}
\exshset{subtask item/.initial={item}}
\edef\exsh@subtaskctr{\pgfkeysvalueof{/exsh/subtask counter}}
\def\exsh@subtaskenv{\pgfkeysvalueof{/exsh/subtask environment}}
\def\exsh@subtaskitm{\pgfkeysvalueof{/exsh/subtask item}}
%define subex as an alias for enumi
\expandafter\let\expandafter\c@subex%
\csname c@\exsh@subtaskctr\endcsname
\expandafter\let\expandafter\p@subex%
\csname p@\exsh@subtaskctr\endcsname
\expandafter\let\expandafter\thesubex%
\csname the\exsh@subtaskctr\endcsname
\expandafter\let\expandafter\theHsubex%
\csname theH\exsh@subtaskctr\endcsname
\expandafter\let\expandafter\cl@subex%
\csname cl@\exsh@subtaskctr\endcsname
% reset equation numbering for each exercise
\@addtoreset{equation}{\pgfkeysvalueof{/exsh/exercise counter}}
\long\def\exsh@savemaintask#1{%
\global\def\exsh@restatetaskmain{#1}%
#1%
}
\newenvironment{maintask}[1][]{%
\pgfkeys{exsh,#1}%
\pgfkeysvalueof{/exsh/main task font}%
\ifbool{exsh@savetasks}{\Collect@Body\exsh@savemaintask}{}%
\ignorespaces
}{}
\newenvironment{subtasks}[1][]{%
\pgfkeys{exsh,#1}%
\begin{\exsh@subtaskenv}
\def\exsh@ifwithinsubt##1##2{##1}
\ignorespaces\begingroup
}{
\endgroup
\end{\exsh@subtaskenv}%
}
\def\exsh@ifwithinsubt#1#2{#2}
\def\exsh@ensuressubtasks{%
\exsh@ifwithinsubt{
\endgroup\begingroup
}{%
\PackageWarning{exercisesheets}{%
Using \subtask\space without a subtasks environment
is unsupported
}{}%
}%
}
\newcommand{\subtask}[2][]{%
\exsh@ensuressubtasks
\pgfkeys{exsh,#1}%
\csname\exsh@subtaskitm\endcsname%
{\pgfkeysvalueof{/exsh/subtask font} #2}%
\ifbool{exsh@savetasks}{%
\csgdef{exsh@restatetask\arabic{\exsh@subtaskctr}}{#2}%
\csdef{exsh@restatetaskcur}{#2}%
}{}%
}
\def\exsh@ensuresavetasks{%
\ifbool{exsh@savetasks}{}{%
\PackageError{exercisesheets}{%
If you want to restate something, you have to %
use the option savetasks.%
}{}%
}%
}
\def\restatetask{%
\exsh@ensuresavetasks%
\@ifstar\exsh@restatetask@\exsh@restatetask%
}
\newcommand{\exsh@restatetask}[1][main]{%
{\pgfkeysvalueof{/exsh/task restate font}%
\csname exsh@restatetask#1\endcsname}%
}
\newcommand{\exsh@restatetask@}[1][main]{%
{\pgfkeysvalueof{/exsh/task restate font}%
\csname exsh@restatetask#1\endcsname}\\%
}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\let\restatetaskbeamer\restatetask
\else%--------- NON-BEAMER: ---------------------------------------
\def\restatetaskbeamer{%
\@ifstar\exsh@restatetaskbeamer\exsh@restatetaskbeamer%
}
\newcommand{\exsh@restatetaskbeamer}[1][main]{}
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newenvironment{hint}[1][]{%
\par
\pgfkeys{exsh,every hint,#1,hint font}%
\vskip\pgfkeysvalueof{/exsh/above hint skip}\relax\noindent
{\pgfkeysvalueof{/exsh/hint title font}\pgfkeysvalueof{/exsh/strings/hint}:}~\ignorespaces
}{%
\par
}
\newenvironment{hint*}[1][]{%
\pgfkeys{exsh,every hint,#1,hint font}%
({\pgfkeysvalueof{/exsh/hint title font}\pgfkeysvalueof{/exsh/strings/hint}:}\space%
}{%
\unskip)%
}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\let\exsh@postsolutionclear\clearpage
\else%--------- NON-BEAMER: ---------------------------------------
\let\exsh@postsolutionclear\par
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\providecommand{\solution}{}
\renewenvironment{solution}[1][]{%
\pgfkeys{exsh,every solution,#1,solution font}%
\ifthenelse{\equal{oral}{\pgfkeysvalueof{/exsh/points}}}{%
\ifbool{exsh@oralsolutions}{%
\let\next\exsh@startsolution
}{%
\let\next\exsh@skipsolution
}%
}{%
\ifbool{exsh@nonoralsolutions}{%
\let\next\exsh@startsolution
}{%
\let\next\exsh@skipsolution
}%
}%
\ifbool{exsh@forcesample}{%
\ifbool{exsh@samplesolutions}{%
\let\next\exsh@startsolution
}{}%
}{}%
\ifbool{exsh@beamersolution}{%
\let\next\exsh@skipsolution
}{}%
\next
}{%
\ifbool{exsh@beamersolution}{}{%
\ifthenelse{\equal{oral}{\pgfkeysvalueof{/exsh/points}}}{%
\ifbool{exsh@oralsolutions}{\exsh@postsolutionclear}{}%
}{%
\ifbool{exsh@nonoralsolutions}{\exsh@postsolutionclear}{}%
}%
}%
}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\def\exsh@solutiontitle#1{
\ifbool{exsh@beameruseblocks}{%
\begin{alertblock}{}%
{\pgfkeysvalueof{/exsh/solution title font}%
\pgfkeysvalueof{/exsh/strings/solution} %
(\pgfkeysvalueof{/exsh/strings/exercise} \arabic{\pgfkeysvalueof{/exsh/exercise counter}}%
\ifnum\@enumdepth>0\alph{subex}\fi)} %
\ifbool{exsh@headerrestate}{
\exsh@ensuresavetasks
\csname exsh@restatetask%
\ifnum\@enumdepth>0cur\else main\fi%
\endcsname%
}{}%
\end{alertblock}
}{
\begin{beamercolorbox}[rounded=true,wd={#1}]%
{block title alerted}
{\pgfkeysvalueof{/exsh/solution title font}%
\pgfkeysvalueof{/exsh/strings/solution} %
(\pgfkeysvalueof{/exsh/strings/exercise} \arabic{\pgfkeysvalueof{/exsh/exercise counter}}%
\ifnum\@enumdepth>0\alph{subex}\fi)} %
\ifbool{exsh@headerrestate}{
\exsh@ensuresavetasks
\csname exsh@restatetask%
\ifnum\@enumdepth>0cur\else main\fi%
\endcsname%
}{}%
\end{beamercolorbox}
}
}
\newcommand{\solutiontitle}[1][\linewidth]{
\ifhmode \linebreak\fi\exsh@solutiontitle{#1}
}
\newcommand{\deferredsolutiontitle}[1][\linewidth]{
\ifbool{exsh@defersolutiontitle}{%
\ifhmode \linebreak\fi\exsh@solutiontitle{#1}
}{}%
}
\long\def\exsh@processframes#1\newframe{%
\ifstrequal{#1}{}{}{%
\clearpage
\begin{frame}[t]{}
` \unskip\vskip1pt\vskip-\parskip
\solutiontitle[\textwidth]
#1
\end{frame}%
\exsh@processframes%
}%no whitespace here is crucial for end detecttion
}
\long\def\exsh@collectedframe#1{
\exsh@processframes#1\newframe\newframe
}
\else%--------- NON-BEAMER: ---------------------------------------
%this command is only usefule for exercisesheets-beamer to place
%the deferred title within a new frame
\newcommand{\solutiontitle}[1][]{}
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\def\exsh@startsolution{%
\ifnum\@enumdepth=0
\ifbool{exsh@framed}{}{\clearpage\stepcounter{framenumber}}
\fi
% \usebeamercolor{block title alerted}
% \setbeamercolor{block body}{bg=bg,fg=fg}
% \block{}
% \pgfkeysvalueof{/exsh/solution title font}%
% \pgfkeysvalueof{/exsh/strings/solution} %
% (\pgfkeysvalueof{/exsh/strings/exercise} \arabic{\pgfkeysvalueof{/exsh/exercise counter}}%
% \alph{subex})%
% \endblock
\ifbool{exsh@framed}{\exsh@defersolutiontitletrue}{}
\ifbool{exsh@defersolutiontitle}{}{%
\ifhmode \linebreak\fi
\exsh@solutiontitle{\linewidth}
}%
\let\next\relax
\ifbool{exsh@framed}{%
\def\next{\Collect@Body\exsh@collectedframe}%
\ifbool{exsh@fragile}{%
\ifluatex%
\def\next{\exsh@start@lframed@}
\else
\PackageError{exercisesheets}{Fragile frames require
LuaLaTeX!}{}
\fi%
}{}%
}{}%
\next%
}%
\else%--------- NON-BEAMER: ---------------------------------------
\def\exsh@startsolution{\@afterindentfalse
\vskip\pgfkeysvalueof{/exsh/above solution skip}\relax%
{\parindent \z@
\pgfkeysvalueof{/exsh/solution title font}%
\pgfkeysvalueof{/exsh/strings/solution}%
\pgfkeysvalueof{/exsh/solution title separator}%
}\nobreak%
\@afterheading
}%
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\long\def\exsh@skipsolution#1{%
\ifstrequal{#1}{\end}{\exsh@endsolution}{\exsh@skipsolution}%
}
\def\exsh@endsolution#1{%
\ifstrequal{#1}{solution}{
\end{solution}
}{%
\ifstrequal{#1}{beamersolution}{
\end{beamersolution}
}{%
\exsh@skipsolution}%
}%
}
%%%%%%%%%%%%%%% BEGIN BEAMER-SPECIFIC: %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\newenvironment<>{beamersolution}[1][]{%
\pgfkeys{exsh,every solution,#1,solution font}%
\ifthenelse{\equal{oral}{\pgfkeysvalueof{/exsh/points}}}{%
\ifbool{exsh@oralsolutions}{%
\let\next\exsh@startsolution
}{%
\let\next\exsh@skipsolution
}%
}{%
\ifbool{exsh@nonoralsolutions}{%
\let\next\exsh@startsolution
}{%
\let\next\exsh@skipsolution
}%
}%
\ifbool{exsh@forcesample}{%
\ifbool{exsh@samplesolutions}{%
\let\next\exsh@startsolution
}{}%
}{}%
\next
}{%
% \ifbool{exsh@framed}{\end{frame}}{}
\ifthenelse{\equal{oral}{\pgfkeysvalueof{/exsh/points}}}{%
\ifbool{exsh@oralsolutions}{\clearpage}{}%
}{%
\ifbool{exsh@nonoralsolutions}{\clearpage}{}%
}%
}
\else%--------- NON-BEAMER: ---------------------------------------
%the regular version of exercisesheets.sty skips all beamer solutions
\newenvironment{beamersolution}[1][]{\exsh@skipsolution}{}%
\fi
%%%%%%%%%%%%%%% END BEAMER-SPECIFIC %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\points}[2][]{%
\ifthenelse{\equal{}{#2}}{}{\exshset{points=#2}}%
\bgroup%
\exshset{#1}%
\ifthenelse{\equal{}{\pgfkeysvalueof{/exsh/pointsinfo}}}{%
\def\exsh@tmp{}%
}{%
\def\exsh@tmp{, \pgfkeysvalueof{/exsh/pointsinfo}}%
}%
\ifthenelse{\equal{#2}{oral}}{%
\ifexsh@abbrev%
\exsh@subexpoints{\pgfkeysvalueof{/exsh/strings/oral abbrev}\exsh@tmp}%
\else%
\exsh@subexpoints{\pgfkeysvalueof{/exsh/strings/oral}\exsh@tmp}%
\fi%
}{%
\ifthenelse{\equal{#2}{}}{%
\exsh@subexpoints{\pgfkeysvalueof{/exsh/pointsinfo}}%
}{%
\ifexsh@abbrev%
\ifexsh@bonus%
\exsh@subexpoints{#2~\pgfkeysvalueof{/exsh/strings/bonus points abbrev}\exsh@tmp}%
\else%
\exsh@subexpoints{#2~\pgfkeysvalueof{/exsh/strings/points abbrev}\exsh@tmp}%
\fi%
\else%
\ifthenelse{\equal{#2}{1}}{%
\ifexsh@bonus%
\exsh@subexpoints{1~\pgfkeysvalueof{/exsh/strings/bonus point}\exsh@tmp}%
\else%
\exsh@subexpoints{1~\pgfkeysvalueof{/exsh/strings/point}\exsh@tmp}%
\fi%
}{%
\ifexsh@bonus%
\exsh@subexpoints{#2~\pgfkeysvalueof{/exsh/strings/bonus points}\exsh@tmp}%
\else%
\exsh@subexpoints{#2~\pgfkeysvalueof{/exsh/strings/points}\exsh@tmp}%
\fi%
}%
\fi%
\ifexsh@sumuppoints%
\ifexsh@bonus%
\addtocounter{exsh@ptsbonus@cur}{#2}
\else%
\addtocounter{exsh@pts@cur}{#2}
\fi%
\fi%
}%
}%
\egroup
\ignorespaces
}
\newenvironment{gradingguide}[1][]{%
\pgfkeys{exsh,#1,grading guide font}%
\ifbool{exsh@gradingguides}{%
\let\next\exsh@startguide
}{%
\let\next\exsh@skipguide
}%
\next
}{}
\def\exsh@startguide{\@afterindentfalse%
\par
{\parindent \z@
\pgfkeysvalueof{/exsh/strings/gradingguide}: }\nobreak%
\@afterheading
}%
\long\def\exsh@skipguide#1{%
\ifstrequal{#1}{\end}{\exsh@endguide}{\exsh@skipguide}%
}
\def\exsh@endguide#1{%
\ifstrequal{#1}{gradingguide}{\end{gradingguide}}{\exsh@skipguide}%
}
\ifluatex%
\ifdefined\luatextextdir
\def\exsh@putatend#1{%
\leavevmode\luatextextdir TRT\unskip{\luatextextdir TLT{\hfill~~#1}}\luatextextdir TLT}%
\else
\def\exsh@putatend#1{%
\leavevmode\textdir TRT\unskip{\textdir TLT{\hfill~~#1}}\textdir TLT}%
\fi
\else%
\def\exsh@putatend#1{%
\TeXXeTstate=1%
\beginR\unskip{\beginL~~#1\endL}\hfill\beginL\TeXXeTstate=0}%
\fi
\def\exsh@leaveinplace#1{\unskip~{#1} }
\def\exsh@insertFill#1{\unskip\nobreak\space\nobreak\hspace*{\fill}\allowbreak\hspace*{\fill}{#1}\unskip}
\newcommand{\exsh@subexpoints}[1]{%
\ifexsh@inplace%
\exsh@leaveinplace{\pgfkeysvalueof{/exsh/points font}\mbox{(#1)}}%
\else%
\ifexsh@pointsfloatright% can be used directly after \item etc.
\exsh@putatend{\pgfkeysvalueof{/exsh/points font}\mbox{(#1)}}%
\else% original points macro with fill
\exsh@insertFill{\pgfkeysvalueof{/exsh/points font}\mbox{(#1)}}%
\fi%
\fi%
}
\newcommand{\TODO}[1][]{%
\ifexsh@showtodos
\ifmmode
\text{\pgfkeysvalueof{/exsh/todo marker font}TODO #1}%
\else
{\pgfkeysvalueof{/exsh/todo marker font}TODO #1}%
\fi
\fi
\PackageWarning{exercisesheets}{TODO marker found}%
}
\newcommand{\ifsolutions}[2]{%
\ifbool{exsh@solutions}{#1}{#2}%
}
\newcommand{\iforalsolutions}[2]{%
\ifbool{exsh@oralsolutions}{#1}{#2}%
}
\newcommand{\ifnonoralsolutions}[2]{%
\ifbool{exsh@nonoralsolutions}{#1}{#2}%
}
\newcommand{\ifsamplesolutions}[2]{%
\ifbool{exsh@samplesolutions}{#1}{#2}%
}
\newcommand{\samplehide}[1]{%
\ifbool{exsh@samplesolutions}{}{#1}%
}
%%%%%%%%%%%%%%% BEGIN BEAMER-ONLY: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifexsh@beamer
\ifexsh@patchheadandfoot
\setbeamertemplate{headline}{}%
\setbeamertemplate{footline}{}%
\fi
\ifbool{exsh@beamerwithheadline}{%
\setbeamertemplate{headline}{%
% \leavevmode%
\begin{beamercolorbox}[wd=\paperwidth,vmode]{frametitle}
\vspace{0.4em}
\leavevmode
\begingroup
\footnotesize%
\hspace*{2ex}{\pgfkeysvalueof{/exsh/subject font}%
\pgfkeysvalueof{/exsh/subject}} \hfill%
{\pgfkeysvalueof{/exsh/semester font}%
\pgfkeysvalueof{/exsh/semester}}\hspace{2ex}\hfil%
\vspace{1mm}\linebreak%
\hspace*{2ex}{\pgfkeysvalueof{/exsh/author font}\exsh@author}%
\hfill{\pgfkeysvalueof{/exsh/date font}%
\pgfkeysvalueof{/exsh/date}}%
\hspace{2ex}\hfil%\vspace{-1em}
\endgroup
\vspace{0.4em}
\end{beamercolorbox}%
\vspace*{3mm}
\vskip\pgfkeysvalueof{/exsh/below slide headline skip}\relax%
}
\addtobeamertemplate{frametitle}{\vspace{-3mm}}{}
}{}%
\ifbool{exsh@beamerwithfootline}{%
\setbeamertemplate{footline}{%
\leavevmode%
\hbox{\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm]{frametitle}%
{\pgfkeysvalueof{/exsh/author font}\pgfkeysvalueof{/exsh/exauthor}}
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm plus1fil]{author in head/foot}%
\usebeamerfont{author in head/foot}
\inserttitle
\hfill\insertpagenumber
\end{beamercolorbox}}%
\vskip0pt%
}
}{}%
\fi
%%%%%%%%%%%%%%% END BEAMER-ONLY %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifluatex
\let\exsh@dlua\directlua
\else
\def\exsh@dlua#1{}
\fi
%change only some catcodes to
\begingroup
\catcode`!=0
\catcode`\@=11
\catcode`\_=12
\catcode`\{=12 %set those to the same value (11/12) as below!
\catcode`\}=12 %
\catcode`<=1
\catcode`>=2
\catcode`\~=11
\catcode`\\=11
%% Expanded, when \catcode`\^^M=12 holds
!global!long!def!exsh@start@Lexercise#1\end{Lexercise}< %
!exsh@dlua %
!endgroup!end%
>
!global!long!def!exsh@start@skip@Lexercise#1\end{Lexercise}< %
!exsh@dlua %
!ifluatex!else%
!refstepcounter>%
!fi
!endgroup!endgroup%
!expandafter!exsh@skipstuff%
!exsh@dlua%
>
!global!long!def!exsh@start@lframed#1\end{solution}< %
!exsh@dlua %
!endgroup!end%
!exsh@dlua%
>
!endgroup
\def\exsh@lua@catcodesBG{
\begingroup
\catcode`!=12
\catcode`\$=12
\catcode`\#=12
\catcode`\_=12
\catcode`\^=12
\catcode`\&=12
\catcode`\|=12
\catcode`\{=12 %set those to the same value (11/12) as above!
\catcode`\}=12 %
\catcode`\~=12
\catcode`\@=11
\catcode`\%=12
\catcode`\ =12
\catcode9=12
\catcode`\^^I=12
\catcode`\^^J=12\catcode`\^^M=12\catcode`\\=11\endlinechar-1}
\newenvironment{Lexercise}{%
\exsh@lua@catcodesBG\exsh@start@Lexercise%
}{%
\ifluatex
\exsh@dlua{exsh_texprintlines(exsh_cur_exercise)}%
\else
\refstepcounter{\pgfkeysvalueof{/exsh/exercise counter}}
Lexercise needs Lua\LaTeX!
\fi
}
\def\exsh@skipstuff@Lexercise{\exsh@lua@catcodesBG\exsh@start@skip@Lexercise}%
\def\exsh@start@lframed@{\exsh@lua@catcodesBG\exsh@start@lframed}
\exsh@dlua{dofile(kpse.find_file("exsh_lexercise.lua"))}