import org.fife.ui.rsyntaxtextarea.*;

static Map<Int> rsyntaxTextArea_fixNumPad_map = litmap(
  KeyEvent.VK_UP, KeyEvent.VK_KP_UP,
  KeyEvent.VK_DOWN, KeyEvent.VK_KP_DOWN,
  KeyEvent.VK_LEFT, KeyEvent.VK_KP_LEFT,
  KeyEvent.VK_RIGHT, KeyEvent.VK_KP_RIGHT
);

sbool rsyntaxTextArea_fixNumPad_done;

static void rsyntaxTextArea_fixNumPad() {
  if (rsyntaxTextArea_fixNumPad_done) ret;
  new RSyntaxTextAreaDefaultInputMap inputMap;
  for (KeyStroke key : inputMap.keys()) {
    Int code = rsyntaxTextArea_fixNumPad_map.get(key.getKeyCode());
    if (code != null)
      inputMap.put(KeyStroke.getKeyStroke(code, key.getModifiers()),
        inputMap.get(key));
  }
  UIManager.put("RSyntaxTextAreaUI.inputMap", inputMap);
  //set rsyntaxtextarea_done;
}

Began life as a copy of #1013052