layer2img.py with arrowplots

IV/extract-and-generate

@@ -5,8 +5,7 @@ fname=${1:-mj-msc-all.pdf}
 echo "Extracting $fname to $dir/" && pdfdetach -saveall -o "$dir" "$fname"
 echo "Generating $dir/$fname ..."
 make -j $(nproc) -C "$dir" "$fname" &> "$dir/make.log" || {
-    echo "Generation failed. Here are the last 20 log lines:"
-    tail -20 "$dir/make.log"
+    echo "Generation failed. Log extract:" && tail -20 "$dir/make.log"
     exit 1
 }
 echo "Opening $dir/$fname ..." && xdg-open "$dir/$fname"