A lot of engineers I know rely on arc diff not failing when untracked files are around. Auto-stashing files still requires a change in behavior (for example, unstashing once the diff has gone out).

In the past, diff workflows allowed us to skip adding untracked files to the revision and continue with the workflow.

We have quite a few duplicate rows (a considerable % of our comments apparently from what I can tell). Will the upgrade --apply preserve one comment (and only delete duplicates) or will it delete all copies of a duplicated comment?

In T6995#92300, @epriestley wrote:

What version of Phabricator are you running?

We're running commit SHA 5b3b9b7182ae4a5ce8e34763bb44711792abcb1d