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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 v2.1.248

Whole-file reads that verify the file after opening it

Under the hood
Useful2 Signal3
File Reads

A new read helper verifies a file after opening it, closing a swap-the-path gap.

What

A new read helper opens a file first, then confirms via the open handle that it is a regular file within a size limit before reading, and returns nothing instead of throwing. This closes the gap where a path could change between being checked and being read.

Evidence

readFileFdGated

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 v2.1.248 →