// [opening bracket to closing bracket + 1]
static L<IntRange> tok_allCurlyBodies(LS tok, int i default 1) {
  new L<IntRange> l;
  IntRange r;
  while ((r = tok_findCurlyBody(tok, i)) != null) {
    l.add(r);
    i = r.end+1;
  }
  ret l;
}