backspace method

void backspace()

Implementation

void backspace() {
  if (_cursorX == 0 && currentLine.isWrapped) {
    currentLine.isWrapped = false;
    movePosition(_terminal.viewWidth - 1, -1);
  } else if (_cursorX == _terminal.viewWidth) {
    movePosition(-2, 0);
  } else {
    movePosition(-1, 0);
  }
}