You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Terminal UIArea: what it touches
New FeaturesKind: in v2.1.251,
New FeaturesSection of the release
What
The tmux clipboard path used to give up unless the TMUX environment variable was set. It now also looks for an explicit attacher socket and passes it to tmux load-buffer, so copy works when Claude Code reaches tmux through a socket instead. If neither is found, there is still no clipboard support.
Evidence
attacher socket
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
