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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.

All of v2.1.64 Home All releases olderv2.1.63 v2.1.66newer
Claude Code v2.1.64

showThinkingSummaries Setting

What

A new boolean setting that controls whether thinking summaries are displayed in the transcript view.

Details
  • Default: false
  • When enabled, thinking process summaries appear in the transcript view (ctrl+o)
  • Also gated behind the tengu_quiet_hollow feature flag
Evidence

Setting definition (search for "Show thinking summaries in the transcript view")

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 v2.1.64 →