Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SettingsArea: what it touches
Internal ChangesKind: in v2.1.277,
Internal ChangesSection of the release
What
Some settings keys have both a current name and an older alias. Previously, setting the alias to null had one behavior. Now, when a special mode called loneNullAlias === 'rename' applies and the current (canonical) key has no value set, setting the alias to null is treated as an explicit reset: Claude Code writes null onto the canonical key before removing the alias. In other cases, the alias is just dropped as before.
Why
This lets a null on an old setting name still express 'clear this setting' after it has been renamed, instead of that intent getting lost.
