static void saveJPG(BufferedImage img, File file) ctex {
  if (!ImageIO.write(img, "jpeg", mkdirsFor(file))) {
    print("Reconstructing image for saving JPEG");
    img = reconstructBufferedImage(img);
    if (!ImageIO.write(img, "jpeg", file))
      fail("Couldn't write JPEG: " + file + " (" + img + ")");
  }
  vmBus_send('wroteFile, file);
}

static void saveJPG(File file, BufferedImage img) ctex {
  saveJPG(img, file);
}

Began life as a copy of #1003962