sbool newButton_autoToolTip = true;

// action can be Runnable or a function name
static JButton newButton(fS text, final O action) {
  ret swing(func -> JButton {
    final JButton btn = new JButton(text);
    onChangeAndNow(btn, r { btn.setToolTipText(btn.getText()) });
    // submitButtonOnEnter(btn); // test this first
    if (action != null)
      btn.addActionListener(actionListener(action, btn));
    ret btn;
  });
}