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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 v2.1.223

New hidden CLI flag --resume-drops-turn

Use it now
Useful4 Signal0
Sessions Notable

A hidden flag lets you declare which turn a truncating resume is meant to discard.

--resume-drops-turn--resume-session-at--resume-p
What

A hidden print-mode option that pairs with --resume-session-at, letting you declare the prompt uuid of the turn a truncating resume intends to discard.

Details
  • the resume is refused if the discarded range contains anything not attributable to the declared turn
  • using it without --resume-session-at is a hard error
  • rejections are reported with a fixed prefix
Usage
claude -p --resume --resume-session-at <chain-entry-uuid> --resume-drops-turn <prompt-uuid>
Evidence

Error: --resume-drops-turn requires --resume-session-at

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 v2.1.223 →