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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.

← All of v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

Backgrounded bash tasks record a new reason: delivering a message

Under the hood
Useful2 Signal3
Bash

A bash command can be backgrounded specifically to deliver a message, tracked as its own reason.

What

A bash command can now be moved to the background specifically so a message can be delivered, alongside the existing reasons of user request, turn abort and timeout. The acknowledgement telemetry reports this as its own trigger value.

Evidence

backgroundedToDeliverMessage

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 v2.1.251 →