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 v2.1.219 Home All releases olderv2.1.218 v2.1.220newer
Claude Code v2.1.219

Vim NORMAL mode passes bare left arrow on an empty prompt to the editor

You'll notice
Useful3 Signal0
Terminal UI

In vim normal mode, pressing left arrow on an empty prompt now works as expected.

Feature flag
tengu_left_arrow_editing_guard Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.219: off

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 v2.1.219. It isn't a statement about your account. What a flag value here can and cannot tell you

What

The left-arrow gesture on an empty prompt did not work while idle in vim NORMAL mode, because only unshifted up and down were forwarded to the underlying input.

Details
  • The vim-mode key router now also forwards left when the buffer text is empty
  • This is the gesture guarded by the "Press ← again" arming notification, key left-arrow-again-for-agents
  • The arming state gained an explicit disarm helper that clears the timer and removes that notification; not every call site of the disarm could be determined
  • The guard itself reads tengu_left_arrow_editing_guard, fallback true
Evidence

left-arrow-again-for-agents

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.219 →