Vincent Massol, Ilie Andriuta I'm curious to know how you define "the last user that made a modification" when editing in realtime. Realtime editing is not turn-based. It actually means typing at the same time. Is there any value in knowing which user typed the last letter when you have multiple users typing at the same time?
We have an author attribution issue in the sense that only one of the users that made changes since the last save is recorded in history, but in practice there's not much difference between choosing that user randomly (between those that made changes since the last save) and choosing "the last user that made a modification" because in practice, when multiple users type at the same time and the autosave is triggered, the last user that made a modification is (from the point of view of the users typing) a random pick.
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