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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 v2.1.118

Atomic File Writes

A new rcq function implements atomic file writes using temp-file-then-rename, with fallback to copy+unlink for cross-device scenarios (EXDEV, EPERM, EEXIST). This prevents data corruption from interrupted writes.

Evidence

Atomic write function at line ~145955 (search for ".tmp." in the write context).

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 v2.1.118 →