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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 v2.1.229 Home All releases ←olderv2.1.228 v2.1.231newer→
Claude Code v2.1.229

A whitespace-only prompt gets its own error

You'll notice
Useful2 Signal1
CLI

A prompt of only spaces to --print now gets its own clear error.

--print
What

Passing a prompt that contains only spaces or newlines to --print now reports that specifically instead of the generic missing-input error.

Details
  • Message: Error: Input contained only whitespace. Provide a prompt with text through stdin or as a prompt argument when using --print.
Evidence

Error: Input contained only whitespace. Provide a prompt with text through stdin or as a prompt argument when using --print

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 v2.1.229 →