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 v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

Control and invisible characters are stripped from names, paths and CLI output

You'll notice
Useful3 Signal3
Output Safety

Invisible and control characters are stripped from names, paths and output for everyone.

What

A new sanitiser removes control, format, surrogate, private-use and unassigned characters, the line and paragraph separators, and default-ignorable code points from text Claude Code prints. Emoji joiners and newlines are kept depending on the context. A file path too mangled to sanitise is now hidden entirely rather than printed. No flag; this applies to everyone on this build.

Details
  • Covers plugin manifest fields (displayName, description, author, homepage, license, keywords), all claude plugin console output, the /plugin browser, marketplace listings, notebook cell ids and sources, file paths, and MCP elicitation labels.
Evidence

Path hidden (unsupported characters)

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 v2.1.239 →