/* e.g.
  if (x exists):
    ask (what is x?)
  else:
    ask (does x exist?)
  => a list with two elements
  
  input has to be starting at column 1! (call autoUnindent if unsure)
*/
static LS groupPythonStyleIndents(S text) {
  LS lines = lines(text);
  new LS out;
  int startOfBlock = 0;
  for i over lines: {
    bool indented = startsWithSpace(lines.get(i));
    if (!indented) {
      addIfNempty(out, lines_rtrim(subList(lines, startOfBlock, i)));
      startOfBlock = i;
    }
  }
  addIfNempty(out, lines_rtrim(subList(lines, startOfBlock)));
  ret out;
}