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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 v2.1.238 ·

Retraction of partially streamed output moved into its own state machine

The code that withdraws a half-printed reply and shows a refusal banner was reorganized; nothing looks different.

Under the hood Internal Changes
JSON All of v2.1.238
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.238,
Internal ChangesSection of the release
What

The logic that withdraws a partially printed response, handles a stale stream restart and swaps in a refusal banner was pulled out of the print loop into a reusable unit whose handlers swallow and log their own errors. The events emitted and the telemetry reported are unchanged.

Details
  • Telemetry still reports tengu_partial_stream_retraction_closed with sources including a stale stream start and a refusal banner.
  • When streaming events are not requested, the whole thing is a do-nothing object.
Evidence

tengu_partial_stream_retraction_closed

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

See this entry in the whole of v2.1.238 →

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