Follow Discord
Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.288 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.288 ·

Claude Code may skip re-reading files that only look changed

A new check can skip re-reading a file Claude has seen when its timestamp is newer, and the number actually re-read is recorded

Nothing to try yet In Development
JSON All of v2.1.288
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
File ToolsArea: what it touches
In DevelopmentKind: in v2.1.288,
In DevelopmentSection of the release
What

When a file Claude has already read changes on disk, Claude Code re-reads it and tells Claude what changed. Until now, every file with a newer modification time was re-read and compared. A new check now runs first, and if it passes, the file is skipped. Claude Code also records how many files were actually re-read. This sits behind the tengu_fallow_plover gate, a switch Anthropic controls remotely.

Why

This is likely to cut needless file reads and change notices when a file's timestamp moves but its contents do not.

Read from
Feature flag
tengu_fallow_plover 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 v2.1.288: 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 v2.1.288. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear what the new check compares before skipping a file.
The name it cites is new in this buildNew in this build: tengu_fallow_plover

See this entry in the whole of v2.1.288 →

Feedback