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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 v2.1.172

AWS Region Display Shows Configuration Source

What

The AWS region display in Bedrock configuration now shows where the region came from — environment variable, AWS shared config file, or the built-in default — rather than just the region name.

Details
  • us-east-1 (from environment) → shown as-is
  • From ~/.aws/config → shown as us-east-1 (from AWS config)
  • Default fallback → shown as us-east-1 (default — set AWS_REGION or add a region to your AWS config)
Evidence

Region source display function (search for "(from AWS config)" and "(default — set AWS_REGION or add a region to your AWS config)")

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 v2.1.172 →