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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.247 ·

Workflow log lines strip control characters from fact labels

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

Under the hood Improvements
JSON All of v2.1.247
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
WorkflowsArea: what it touches
ImprovementsKind: in v2.1.247,
ImprovementsSection of the release
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.

See this entry in the whole of v2.1.247 →

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