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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

Background daemon waits on the REPL process during terminal teardown

You'll notice
Useful3 Signal2
Background Tasks

Terminal cleanup targets the right process instead of killing the whole group.

What

When the background daemon tears down a terminal worker, it now checks the recorded REPL process before falling back to killing the whole process group, on top of the existing attempts to close sockets. This makes cleanup less likely to kill more than it should.

Details
  • The check uses the process id and start time stored for the worker, so a recycled process id is not mistaken for the original.
  • Unconditional part of background worker cleanup.
Evidence

await UV(A.replPid, A.replProcStart)

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 →