This is what a semicolon group cannot be. tmux discards a group after its first failure, so a client has to infer which command failed; here each request is independent and each reply carries the request number that produced it, so a failure discards nothing behind it and attribution is tmux's own.
Replies arrive in request order, so the writer sends one request at a time and matches its reply by position. A deadline before the writer picks a request writes nothing; a deadline after that point ends the client because the next reply could no longer be attributed safely.
The reader and writer are platform threads. A library does not own the virtual-thread scheduler, and either one unable to run stops the client from making progress. The reader only resolves replies and fills bounded subscription buffers; subscriber code runs on the thread that pulls a value. ## Members - `attach` (method) — Attaches a control client to an existing session. - `send` (method) — Runs one command and waits for its reply. - `isAlive` (method) — Whether the client is still running. - `subscribeOutput` (method) — Subscribes to terminal output tmux pushes. - `subscribeEvents` (method) — Subscribes to state changes tmux volunteers. - `watch` (method) — Asks tmux to report a format whenever its value changes. - `unwatch` (method) — Stops a watch. tmux reads a name with no colon in it as one to remove. - `close` (method) — Ends the client, rejecting queued requests and resolving picked requests as uncertain. - `line` (method) — tmux parses a control-mode request as one line, so an argument has to survive its lexer. Single quotes preserve everything except a single quote, which is closed, escaped and reopened. - `unescape` (method) — tmux writes a byte it cannot print as a three-digit octal escape.