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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 v2.1.247 26 Aug 2026

PowerShell results distinguish an aborted-turn background from a user one

Under the hood

Useful2 Signal2

Elsewhere

PowerShell results now distinguish backgrounding you chose from backgrounding caused by an aborted turn.

What

Backgrounded PowerShell results now carry backgroundedByTurnAbort next to the existing backgroundedByUser, and the tool passes a caller identity into its executor.

Details

Output persistence on this path now waits on the shell-output directory helper and passes the session's storage version through to it.

Evidence

backgroundedByTurnAbort

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

See this entry in the whole of v2.1.247 →