Under the hood
Useful2 Signal3
One callback can now run just before an interactive session exits, with errors swallowed quietly.
What's wrong with this entry?
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What
The process lifecycle gained a slot for a single shutdown callback that can be set or cleared, runs once before an interactive session exits, is skipped if shutdown is already under way, and has its errors sent to the error reporter rather than surfaced.
Evidence
runBeforeInteractiveShutdown
Strings lifted out of the shipped bundle, so the claim above can be checked against them.