sS joinLinesWithBarOrPunctuation(S text) {
  LS lines = tlft(text);
  new StringBuilder buf;
  S sep = "";
  for (S s : lines) {
    buf.append(sep).append(s);
    if (endsWithPunctuation(s))
      sep = " ";
    else
      sep = " | ";
  }
  ret str(buf);
}