Unclear It is not clear which values are now accepted or refused, so it is unclear whether commands that used to match a rule might now ask for permission.
What
A Bash command can start by setting an environment variable (a named setting passed to a program), as in VAR=value command. When Claude Code compares such a command against your permission rules, it decides whether that leading prefix can be safely set aside. Before, it decided by checking only the variable's name against a list of allowed names. It now takes both the name and the value into account.
Why
This makes Claude Code stricter about which variable prefixes it treats as safe when matching Bash permission rules.
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It is not clear which values are now accepted or refused, so it is unclear whether commands that used to match a rule might now ask for…