Makefile

@@ -1,6 +1,19 @@
 
 default: charte.pdf fede.pdf regle.pdf
 
+diff: charte.diff.pdf fede.diff.pdf regle.diff.pdf
+
 %.pdf: %.tex
 	pdflatex $*
 	pdflatex $*
+
+%.diff.tex: %.tex
+	@if [ -z "$${LAST}" ]; then echo "Il faut passer une variable LAST=<tag> à la commande"; exit 1; fi
+	@git show ${LAST}:$< > tmp.tex
+	@if grep -F -q 'usepackage[latin1]' tmp.tex; then \
+		iconv -f latin1 -t utf-8 tmp.tex > tmp2.tex; \
+		sed -e 's/usepackage[latin1]/usepackage[utf8]/' tmp2.tex > tmp.tex; \
+		rm tmp2.tex; \
+	fi
+	latexdiff tmp.tex $< > $@
+	@rm -f tmp.tex