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Sessions inside tmux used to skip the clipboard provider entirely, so yanks only reached the machine's own Wayland clipboard and never traveled over OSC 52 to clients attached via SSH. Now every copy also emits OSC 52, which tmux turns into a buffer and rebroadcasts to all attached clients. Paste prefers wl-paste when a display is available. This also drops the private-file fallback clipboard and its regtype sidecar: Neovim's built-in clipboard layer already restores the register type when pasted content matches its cache, and OSC 52 queries answered by tmux cover the display-less paste case. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>