You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
CompactionArea: what it touches
ImprovementsKind: in v2.1.314,
ImprovementsSection of the release
Unclear Whether idle compaction now actually runs by default, or only its description changed, is not settled.
What
Compaction is when Claude Code shortens a long conversation by summarising its earlier parts. Idle compaction does this while the session is idle.
The description of the setting that controls idle compaction has changed. It used to say: "Setting it to true does not turn idle compaction on." It now says: "Set to false to stop Claude Code from compacting a long conversation while the session is idle. Defaults to true."
Why
The documented default is reversed. If you do not want a long conversation compacted while the session is idle, the description now names false as the way to stop it.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhether idle compaction now actually runs by default, or only its description changed, is not settled.
