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37c7e4d1d8
The code doing so was undertested and buggy: it would launch multiple attempts to transition out when the conf change was not the last element in the log. This commit fixes the problem and adds a regression test. It also reworks the code to handle a former untested edge case, in which the auto-transition append is refused. This can't happen any more with the current version of the code because this proposal has size zero and is special cased in increaseUncommittedSize. Last but not least, the auto-leave proposal now also bumps pendingConfIndex, which was not done previously due to an oversight.