static O parse1_debug_parser;

static O parse1_debug(S text, S rules) {
  ret parse1_debug(javaTok(text), rules);
}

// only parse, no explain
static synchronized O parse1_debug(L<S> tok, S rules) {
  if (parse1_debug_parser == null)
    parse1_debug_parser = run_overBot(#1002719);
  setOpt(parse1_debug_parser, "debug", true);
  ret call(parse1_debug_parser, "parse", tok, rules);
}

Began life as a copy of #1002684