Pre-compilation of tasks so the code is not necessary in exercise packages.

Makefile

@@ -2,6 +2,9 @@ SHELL=/bin/bash
 
 default: preview
 
+# Build everything there is.
+all: listings tasks preview publication
+
 # Remove builds and LaTeX output.
 clean: 
 	@echo Cleaning up temporary files.
@@ -13,6 +16,10 @@ clean:
 listings: listings/**/*
 	./compile_listings
 
+# Compile pre-rendered tasks
+tasks: exercises/**/*
+	./compile_tasks
+
 # Compile a preview PDF containing all contents
 preview: main.tex
 	echo "\newcommand\exercisemode{any}" > exercise-mode.tex
@@ -77,6 +84,7 @@ publication-zip-with-exercises: publication-dir main.tex
 	cp --parents main.tex praeamble.tex commands.tex content/* graphics/* listings/**/*{.tex,pdf,bib} temp/
 	cp --parents exercises/**/* temp/
 	rm -f temp/exercises/**/*.done.{tex,bib}
+	rm -f temp/exercises/**/*.rend.tex
 	find temp/ -name '*.raw.*' -exec bash -c 'sed "s/\.raw\./\./g" <<<{} | xargs mv {}' \;
 	find temp/ -name '*.tex' -exec sed -i -e 's/\.raw\./\./g' {} \;
 	cd temp && zip ../public/project-with-exercises * **/* **/**/*

compile_tasks

@@ -0,0 +1,31 @@
+#!/bin/bash
+for D in exercises/*; do
+	echo "${D}"
+	if [ -d "${D}" ]; then
+		# convert tex to pdf
+		for F in ${D}/*.rend.tex; do
+			if [ -f "${F}" ]; then
+				echo "###### Rendering ${F} ######"
+				pdflatex --output-directory "${D}" --shell-escape "${F}"
+			fi
+		done
+		# crop pdf
+		for F in ${D}/*.rend.pdf; do
+			if [ -f "${F}" ]; then
+				pdfcrop "${F}"
+			fi
+		done
+		# remove temporary files
+		for F in ${D}/*.{aux,log,out}; do
+			if [ -f "${F}" ]; then
+				rm ${F}
+			fi
+		done
+		# move pdf to graphics folder
+		for F in ${D}/*.pdf; do
+			if [ -f "${F}" ]; then
+				mv ${F} graphics/
+			fi
+		done
+	fi
+done

exercises/maths/math-formulas.raw.tex

@@ -1,29 +1,2 @@
-\begin{center}
-
-\textbf{Fallbeschleunigung in Deutschland}
-$$9,81\,\frac{m}{s^2}$$ \\
-~ \\
-
-\textbf {pq-Formel}
-$$x_{1,2} = - \frac{p}{2} \pm \sqrt{\left(\frac{p}{2}\right)^2 - q}$$ \\
-~ \\
-
-\textbf{Mitternachtsformel} 
-$$x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ \\
-~ \\
-
-\textbf{Catalansche Zahlen}
-\begin{equation*} C_n = \frac{1}{n+1} {2n \choose n} = \frac{(2n)!}{(n+1)!n!} \end{equation*} \\
-~ \\
-
-\textbf{Definition der Fakultät} 
-$$n! = \prod_{i=1}^{n} i$$ \\
-~ \\
-
-\textbf{Menge aller ungeraden natürlichen Zahlen}
-$$\{ x \mid x \in \mathds{N}, \mathrm{ungerade}(x) \}$$
-~ \\
-
-\textbf{Elimination $\neg\exists x$}
-$$\neg\exists x . p(x) \Leftrightarrow \forall x . \neg p(x)$$
-\end{center}
+% Ersetzt diese Grafik durch die entsprechenden Formeln:
+\includegraphics{graphics/math-formulas.rend-crop.pdf}

exercises/maths/math-formulas.rend.tex

@@ -0,0 +1,47 @@
+\documentclass[a4paper, ngerman]{report}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{babel}
+\usepackage{eurosym, tipa, textcomp, textgreek, upgreek}
+\usepackage{amssymb, amsfonts, amsmath, dsfont}
+\usepackage[hidelinks]{hyperref}
+\usepackage{cleveref}
+\usepackage{graphicx} 
+\usepackage{longtable, array, tabularx, booktabs, colortbl}
+\usepackage{minted}
+\begin{document}
+\thispagestyle{empty}
+
+\hrule
+\begin{center}
+
+\textbf{Fallbeschleunigung in Deutschland}
+$$9,81\,\frac{m}{s^2}$$ \\
+~ \\
+
+\textbf {pq-Formel}
+$$x_{1,2} = - \frac{p}{2} \pm \sqrt{\left(\frac{p}{2}\right)^2 - q}$$ \\
+~ \\
+
+\textbf{Mitternachtsformel} 
+$$x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ \\
+~ \\
+
+\textbf{Catalansche Zahlen}
+\begin{equation*} C_n = \frac{1}{n+1} {2n \choose n} = \frac{(2n)!}{(n+1)!n!} \end{equation*} \\
+~ \\
+
+\textbf{Definition der Fakultät} 
+$$n! = \prod_{i=1}^{n} i$$ \\
+~ \\
+
+\textbf{Menge aller ungeraden natürlichen Zahlen}
+$$\{ x \mid x \in \mathds{N}, \mathrm{ungerade}(x) \}$$
+~ \\
+
+\textbf{Elimination $\neg\exists x$}
+$$\neg\exists x . p(x) \Leftrightarrow \forall x . \neg p(x)$$
+\end{center}
+
+\hrule
+\end{document}