// returns: (properties, first line not parsed)
static Pair<SS, Int> ctxParseProperties(L<S> lines, int lineIndex) {
  SS properties = litorderedmap();
  int i;
  for (i = lineIndex; i < l(lines); i++) {
    L<S> tok2 = javaTok(lines.get(i));
    if (l(tok2) == 1) continue;
    if (eqGet(tok2, 1, "[") && eqGet(tok2, 5, "]")
      && eqGet(tok2, 7, "="))
      properties.put(tok2.get(3), unquoteCtx(trim(join(subList(tok2, 9)))));
    else break;
  }
  ret pair(properties, i);
}