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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 v2.1.229

Whitespace-only prompts are rejected for --cloud and --environment

You'll notice
Useful2 Signal1
CLI not in their notes

Whitespace-only prompts on --cloud and --environment are rejected instead of sent empty.

--cloud--environment
What

A prompt consisting only of spaces or newlines is now treated as no prompt at all on both non-interactive paths, so you get the existing "requires a prompt" error instead of an empty request being sent.

Evidence

Error: non-interactive --cloud <session_id> requires a prompt (positional or stdin).

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 →