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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 v2.1.234

Task output file copies refuse suspicious paths

Under the hood
Useful2 Signal1
Elsewhere

Copying a task's output file now refuses if the file changed or isn't an ordinary single-link file.

What

Copying a task's output file now verifies it is an ordinary file with a single link before and after opening it, and refuses if anything changed in between.

Details
  • Checks for a regular file with link count 1, opens refusing symlinks and without blocking, then re-verifies device, inode and link count through the open handle.
  • Refuses on ELOOP, EISDIR, ENOTDIR, ENXIO and EOPNOTSUPP, or on any change between the first check and the open, with a logged error.
Evidence

task output swap refused

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 →