You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
PermissionsArea: what it touches
ImprovementsKind: in v2.1.299,
ImprovementsSection of the release
What
WSL (Windows Subsystem for Linux) lets you run Linux on Windows, and the same file can often be reached by two different paths, for example through a /mnt drive mount. Claude Code's file permission rules (settings that allow, deny or ask before Claude touches certain paths) used to match only the path exactly as written.
On WSL, Claude Code can now also check the rules against the second mount spelling of the path. This covers:
deny rules
ask rules
edit checks
This is behind a remotely controlled switch that is off unless it is switched on remotely.
Why
Without this, a file you had blocked could be reached through its other path on WSL, getting around a deny rule.
Read from
Feature flag
tengu_zesty_pearlNot 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 v2.1.299: 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.
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's release notes agreeFixed sandboxed commands failing on WSL2 with bwrap: Can't mkdir /mnt/c/Program Files/ClaudeCode when the sandbox can write to the Windows…
The name it cites is new in this buildNew in this build: tengu_zesty_pearl
