#!/bin/sh

PATH=${PWD%/code*}/code:$PATH

pngtrns () {
  priforgepng -d 2 glr rbr gtb -s 8 | priweavepng - - - |
  prichunkpng --transparent '#FFF' - 
}

pngtrns | pripnglsch | grep -q tRNS || exit 9
pngtrns | prichunkpng --delete tRNS - |
  pripnglsch | grep -q tRNS && exit 1
exit 0