Script.java

        if (moreStack) {
          final String[] ret = new String[1];

          try {
              Thread t = new Thread(null, null, "executor", 16*1024) {
                @Override public void run() {
                  try {
                    ret[0] = ruby.evalScriptlet(code, scope).inspect().toJava(String.class).toString();
                  } catch (final RaiseException e) {
                      handler.post(new Runnable() {
                        public void run() {
                           e.printStackTrace(ruby.getErrorStream());
                        }
                      });
                  }
                }
              };
              t.start();
              t.join();

              return ret[0];
          } catch (InterruptedException e) {
              return null;
          }
        } else {