alt_buffer method

void alt_buffer()

Implementation

void alt_buffer() {
  if (!_buff_ctlr_c) {
    ProcessSignal.sigint.watch().listen(
      (final signal) {
        norm_buffer();
        exit(0);
      },
    );
    _buff_ctlr_c = true;
  }
  write_ansi('?47h');
}