def onShortcutUnindentWithBackspace(self):
        """Backspace pressed, unindent
        """
        assert self._qpart.textBeforeCursor().endswith(self.text())

        charsToRemove = len(self._qpart.textBeforeCursor()) % len(self.text())
        if charsToRemove == 0:
            charsToRemove = len(self.text())

        cursor = self._qpart.textCursor()
        cursor.setPosition(cursor.position() - charsToRemove, QTextCursor.KeepAnchor)
        cursor.removeSelectedText()
def patched_cnli(monkeypatch):
    MockCapsNumLockIndicator.reset()
    monkeypatch.setattr(
        "libqtile.widget.caps_num_lock_indicator.subprocess", MockCapsNumLockIndicator
    )
    monkeypatch.setattr(
        "libqtile.widget.caps_num_lock_indicator.subprocess.CalledProcessError",
        subprocess.CalledProcessError,
    )

    monkeypatch.setattr(
        "libqtile.widget.caps_num_lock_indicator.base.ThreadPoolText.call_process",
        MockCapsNumLockIndicator.call_process,
    )
    return caps_num_lock_indicator