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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 v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

Case-variant environment variables no longer drop overrides on Windows

You'll notice
Useful3 Signal2
Windows

On Windows, case-variant environment variables no longer lose your base URL or header overrides.

What

On Windows, where environment variable names are case-insensitive, duplicate case variants of the same name are now folded together before base URL and header overrides are compared and passed along, so an override is no longer lost to a case mismatch.

Details
  • The helper returns immediately on every platform other than Windows.
Evidence

if (P() !== "windows") return;

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 v2.1.251 →