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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 v2.1.221

Cloud review: better messages for detached HEAD and wrong base branch

You'll notice
Useful3 Signal0
Code Review

Cloud review now tells you to create a branch on detached HEAD instead of failing with a vague error.

What

Cloud review failures on a checkout with no branches now return a dedicated no_merge_base error telling you to create a branch first, and the "shares no history with HEAD" message suggests passing the real base branch explicitly.

Details
  • detached-HEAD checkouts previously fell through to a generic bundling failure
  • the no-shared-history path now names the likely cause rather than only reporting it
Evidence

Your checkout has no branches (detached HEAD only), which cloud review can't bundle.

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 v2.1.221 →