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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.221

Esc cancel has a scope that leaves background tasks alone

You'll notice
Useful4 Signal0
Background Tasks

Pressing Esc to cancel a turn no longer kills your background tasks.

What

Cancelling a turn locally no longer tears down non-durable registry tasks.

Details
  • interrupt takes a second options argument and forwards scope.
  • Local cancels pass { scope: "turn-cancel" }; remote cancels pass nothing.
  • On the receiving side, the branch that tears down non-durable registry tasks is skipped when the scope is turn-cancel.
  • The SDK consumer-error path also interrupts with this scope.
Evidence

turn-cancel

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.221 →