@@ -12,6 +12,7 @@ size=$(pdfinfo "$pdf" | awk '/^Page size:/{

 	if (a >= 1189 && a <= 1191 && b >= 841  && b <= 843 ) print "a3"

 }')

 pages=$(pdfinfo "$pdf" | awk '/Pages:/{print $2}')

+size=${size:-a4}

 test $pages -ne 4 -o -z "$size" && exit	

 recto=$(mktemp -d /dev/shm/XXXXXXXX)

@@ -26,7 +27,7 @@ else

 fi

 booksize="a$((${size//[^45]}-1))"

-pdfjam --paper ${booksize}paper --nup 2x1 --landscape --outfile $recto "$output" 1 "$output" 4

+pdfjam --paper ${booksize}paper --nup 2x1 --landscape --outfile $recto "$output" 4 "$output" 1

 pdfjam --paper ${booksize}paper --nup 2x1 --landscape --outfile $verso "$output" 2 "$output" 3

 pdftk A=$(find $recto -name "*pdf") B=$(find $verso -name "*pdf") cat A B output "${pdf%/*}/livret-${pdf##*/}"

 rm -fr $recto $verso $output