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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.251 ·

Background sessions shut down on hangup when they own the terminal

Background sessions now shut down cleanly when their terminal disappears.

You'll notice Improvements
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Background TasksArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release
What

SIGHUP used to be ignored outright by background sessions. Now, if the process owns the controlling terminal, it records the signal and shuts down properly instead of lingering after the terminal goes away.

Details
  • Conditional on owning the controlling terminal; other background sessions still ignore SIGHUP.
  • The shutdown is logged with the signal name and a flag noting the terminal ownership.
Evidence

shutdown_signal", { signal: "SIGHUP", bg_ctty: !0 }

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.251 →

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