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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 v2.1.27

Multi-File Patch Validation

Better error message when attempting to create patches without file headers:

  • "Cannot omit file headers on a multi-file patch. (The result would be unparseable; how would a tool trying to apply the patch know which changes are to which file?)"
Evidence

Diff formatter validation (search for "Cannot omit file headers on a multi-file patch")

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

See this entry in the whole of v2.1.27 →