sbool dm_bot_execEvalCmd(VF1<S> postMessage, S s, O... _) {
  double timeout = optPar timeout(_, 60.0);
  O safetyCheck = optPar safetyCheck(_);
  O mod = dm_current_generic();
  optPar bool alwaysFresh;
  
  new Matches m;
  bool freshMe = swic_trim(s, "!fresh ", m);
  if (freshMe || eq(s, "!fresh")) {
    dm_refreshTranspiler();
    if (!freshMe) ret true with callF(postMessage, "OK");
  } else if (alwaysFresh) dm_refreshTranspiler();
      
  if (swic_trim(s, "!eval ", m))
    ret true with callF(postMessage, pcallOrExceptionText_strOrNull(func {
      S code = m.rest();
      try answer (S) callF(safetyCheck, code);
      ret print("eval result > ", strOrNull(dm_javaEvalOrInterpret(code)));
    }));
        
  if (freshMe || swic_trim(s, "!real-eval ", m))
    ret true with callF(postMessage, evalWithTimeout_text(timeout, func {
      temp dm_enter(mod);
      S code = m.rest();
      try answer (S) callF(safetyCheck, code);
      ret print("eval result > ", dm_javaEval(code));
    }));
  false;
}