sS dm_processEmbeddedSafeEvals(S s, O... _) {

  Map<S> evalCache = cast optPar evalCache(_);

  if (!contains(s, "{=")) ret s;

  LS tok = javaTok(s);

  Map<Int> bracketMap = curlyBracketMap(tok);

  for (int i = 1; i < l(tok)-4; i += 2) {

    continue unless eq(tok.get(i), "{") && eqGet(tok, i+1, "") && eqGet(tok, i+2, "=");

    // eval found

    int j = or(bracketMap.get(i), l(tok));

    S code = joinSubList(tok, i+4, j-1);

    if (!isSafeCodeFragment(code))

      replaceTokens(tok, i+2, i+4, "UNSAFE: ");

    else {

      S result = mapGet(evalCache, code);

      if (result == null) {

        print("Evaluating: " + code);

        try {

          result = strOrEmpty(dm_javaEvalOrInterpret(code));

        } catch e {

          printStackTrace(e);

          result = "";

        }

        mapPut(evalCache, code, result);

      }

      replaceTokens(tok, i, j+1, result);

    }

    i = j-2;

  }

  ret trim(join(tok));

}