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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 v2.1.227 10 Aug 2026

Forks keep the parent's suppressed history

You'll notice

Useful2 Signal1

Sessions

Forking a session with suppressed history keeps that suppression instead of restoring it.

What

When a session's transcript history was suppressed, forking it now records that suppression on the fork with reason "fork_inherit" rather than starting the fork with clean history.

Details

a precautionarySuppressionHeld flag is carried across resume and fork so a held suppression is re-applied under the new session id

Evidence

fork_inherit

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

See this entry in the whole of v2.1.227 →