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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 v2.1.247

Workflow log lines strip control characters from fact labels

Under the hood
Useful1 Signal2
Workflows

Workflow log labels are scrubbed of control characters, and a new "over budget" line exists.

What

The starved: and new over budget: lines run the label through a sanitizer that removes control and format characters and a range of quote characters, so a label cannot forge log structure.

Details
  • Script errors in the same area now go through a shared formatting helper instead of inline stack slicing.
  • Applies unconditionally in Workflow v2.
Evidence

/[\p{Cc}\p{Cf}\u0022\u201c-\u201f\u2033\u2036\u275d\u275e\u301d\u301e\uff02]/gu

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 v2.1.247 →