Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PermissionsArea: what it touches
Internal ChangesKind: in v2.1.274,
Internal ChangesSection of the release
What
Claude Code has an internal check that catches a hook or plugin silently rewriting the text a UI element displays. Previously this check only looked at one field, a message's origin. It now checks a wider set of fields (origin, isExpanded, task, from), and separately flags any of these values as suspicious if it contains a control character (a hidden escape sequence the terminal would act on) or is unexpectedly long.
Why
This closes gaps where a hook could have altered what a user sees in ways the old, narrower check wouldn't catch, making it harder for a hook to disguise a rewrite as ordinary printable text.
