Unclear Which variables are affected and when the check applies is not stated.
What
Claude Code filters the environment variables it passes along. It now also blocks values for a certain set of variables when they fail a format check. This applies only under a particular condition. An empty LANG is still allowed.
Why
This tightens which environment values Claude Code accepts, which may matter if a variable you set is unexpectedly dropped.
Names in the bundleLANG
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The writer flagged doubt
Which variables are affected and when the check applies is not stated.