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

A toggleable /diff panel sits behind a gate that is off by default

Not switched on
Useful3 Signal4
Diff Panel Notable

/diff would toggle a sidebar instead of opening a dialog, but the gate is off so you keep the old behaviour.

The toggling /diff handler and its new description are behind tengu_willow_crate, fallback 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

/diff has two behaviours in this build. With the tengu_willow_crate gate on, the command is described as "Toggle the diff panel showing uncommitted changes" and actually opens and closes the diff sidebar. With it off, which is the in-source fallback, the old description stays and the handler does nothing. Absent a remote config value saying otherwise, you get the old behaviour.

Details
  • A keybinding route in the off state reports "The diff panel isn't available right now"
Evidence

tengu_willow_crate

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 →