Source Intelligence

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 v2.1.234 Home All releases olderv2.1.233 v2.1.235newer
Claude Code v2.1.234

A failed write to a subprocess's stdin no longer looks like success

You'll notice
Useful3 Signal1
Shell Execution

A command that fails while receiving input now reports an error instead of pretending it succeeded.

What

If writing input to a spawned command fails with an error outside the ignored set, the child is killed and the run returns exit code 1 with an explicit error, instead of returning whatever partial output had been collected.

Details
  • The failure is recorded as the reason the output was truncated, and the error text begins "stdin write failed: ".
Evidence

stdin write failed:

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 v2.1.234 →