Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
Terminal UIArea: what it touches
Internal ChangesKind: in v2.1.317,
Internal ChangesSection of the release
What
Tmux is a terminal tool that lets you run several terminal sessions in one window. When Claude Code runs inside tmux and CLAUDE_CODE_TMUX_TRUECOLOR is not set, it caps the range of colors it uses. That still happens exactly as before. The step that applies the cap no longer reports back a yes-or-no result after doing so.
Why
This looks like an internal cleanup with no visible effect. If you want full color inside tmux, CLAUDE_CODE_TMUX_TRUECOLOR is still the setting that skips the cap.