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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 v2.1.225

Self-sent peer message detection ignores PID 1

You'll notice
Useful2 Signal0
Cross-Session Messaging

Inbound peer messages are no longer mistaken for your own when running inside a container.

What

Inbound peer messages are no longer misattributed to this process when the session runs as PID 1, which is common inside containers.

Details
  • the self-sent check now takes the pid as a parameter rather than reading it implicitly
  • returns false outright when that pid is 1, so no false selfSent match
  • pairs with the ancestor-walk change above
Evidence

selfSent

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 v2.1.225 →