static Map<S, BWImage> getLearnedCharacters2() {
  new Matches m;
  new HashSet<S> md5s;
  for (S s : scanLog_iterator(glyphTeachLog()))
    if (find3("the images *", afterSquareBracketStuff(s), m))
      md5s.addAll(splitAtSpace($1));
  //print("MD5s we're looking for: " + struct(md5s));
  
  new HashMap<S, BWImage> md5ToImage;
  for (S md5, File f : screenClipFiles()) {
    BWImage img = loadBWImage(f);
    if (md5s.contains(md5))
      md5ToImage.put(md5, img);
    for (BWImage cImg : horizontalAutoSplitToImages(img)) {
      S cMD5 = ocrMD5OfBWImage(cImg);
      if (md5s.contains(cMD5))
        md5ToImage.put(cMD5, cImg);
    }
  }
  
  int found = l(md5ToImage);
  print("Found character images: " + found + "/" + l(md5s));
  ret md5ToImage;
}

Began life as a copy of #1006193