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Sweep 08 Oct 2026 · 18:53Z Build v2.1.295 516 read Stable v2.1.286 Latest v2.1.295 Next v2.1.295 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.292 ·

Changed safety check for Bash commands that start by setting a variable

Claude Code's safety check for Bash commands that begin by setting environment variables now depends on extra conditions, including a remote switch

You'll notice Improvements
JSON All of v2.1.292
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Bash ToolArea: what it touches
ImprovementsKind: in v2.1.292,
ImprovementsSection of the release

Unclear Which commands this applies to, and whether it approves more or fewer of them, is not stated.

What

Some shell commands start by setting an environment variable (a named value the command can read), as in NAME=value command. Claude Code checks these before running them with the Bash tool, the tool it uses to run shell commands. It used to reject such a command whenever a variable failed a single check on its name. For some commands it now rejects only when the variable is not otherwise considered safe and any of these holds:

  • the remote switch tengu_umber_plover is off
  • a "relaxed" mode is in use
  • the fallback for running outside the sandbox (the walled-off area Claude Code can run commands in) has not been closed by a trusted source

tengu_umber_plover falls back to on when the server sends nothing.

Why

This changes which Bash commands that set variables up front can be approved without asking you.

Read from
Feature flag
tengu_umber_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 v2.1.292: 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 v2.1.292. 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 doubtWhich commands this applies to, and whether it approves more or fewer of them, is not stated.
The name it cites is new in this buildNew in this build: tengu_umber_plover

See this entry in the whole of v2.1.292 →

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