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 v2.1.228 Home All releases olderv2.1.227 v2.1.229newer
Claude Code v2.1.228

Diff panel inside the REPL

Not switched on
Useful4 Signal5
Diff Panel Notable

A full uncommitted-changes side panel with filters and "Ask about selection" is built but gated off.

The in-REPL diff panel behind /diff sits behind tengu_willow_crate, whose fallback is false.

Feature flag
tengu_willow_crate Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.228: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.228. It isn't a statement about your account. What a flag value here can and cannot tell you

/diff
What

A side panel showing uncommitted changes is built into the REPL, with /diff toggling it rather than opening the existing dialog. It has a file list, a section for changes made before this session, a filter that hides test and generated-file noise, cycling of the comparison base, and an "Ask about selection" action that sends a selected hunk into your prompt. It sits behind the tengu_willow_crate gate, whose fallback in this build is false, so nothing changes without a remote value enabling it.

Details
  • New keybindings: app:toggleReplTab, app:cycleDiffBase, app:toggleDiffNoiseFilter, app:toggleDiffPreSession, app:diffFileListUp and app:diffFileListDown.
Evidence

Toggle the diff panel showing uncommitted changes

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 v2.1.228 →