Modula2_kilo/step69/toto.txt

void editorMoveCursor(int key) {
  switch (key) {
    case ARROW_LEFT:
      if (E.cx != 0) {
        E.cx--;
      }
      break;
    case ARROW_RIGHT:
      if (E.cx != E.screencols - 1) {
        E.cx++;
      }
      break;