MovingRanges Port: untitled documents

[David Nolden]

2010/7/23 Christoph Cullmann <cullmann at absint.de>:
>> We don't need the signal that bad anyway. I've fixed the crash now,
>> aboutToInvalidateMovingInterfaceContent was enough.
> Ok, but question: how?

The tracker always remembers the "previous" revision which is acquired
through lockRevision, and which will be used for transforming the
duchain. We can simply reset that revision on
aboutToInvalidateMovingInterfaceContent, and that way we won't try do
to the transformation later.