tmux compatibility

zz reimplements tmux in Rust; it never runs or links tmux. Behavior is checked against a pinned upstream commit. Around 40 commands and their aliases work, along with the seven named layouts and the root, prefix, copy-mode, and copy-mode-vi key tables.

Anything unsupported is rejected with a diagnostic instead of being half-implemented, so you find out at config load, not mid-session.

Your config

On first launch zz copies your ~/.tmux.conf verbatim to ~/.config/zz/mux.conf, the only mux config file the daemon ever reads. Your original file is never touched. set -g prefix, key bindings, history-limit, mode-keys, and the rest of the supported subset apply as-is.

Copy mode

Full copy mode, rendered natively. The selection, search matches, cursor, and scrollbar are painted by the GUI, never emitted as escape sequences:

• vi and emacs tables, rectangle selection, marks
• incremental regex search with smart case
• jump-to-forward / jump-again
• next-prompt / previous-prompt via OSC 133 shell-integration marks
• copy-pipe into any shell command

Each attached client gets its own cursor, selection, and search over a frozen view while output keeps flowing underneath.

Navigation

• choose-tree and display-panes as native overlays
• a persistent sidebar with the session tree and your status-left / status-right formats, #{...} variables and #() shell substitution included
• a command palette (prefix :) with completions for commands, flags, and live $session / @window / %pane targets

IDs are stable tmux-style sigils: $0 sessions, @1 windows, %2 panes, all scriptable from the CLI.