Macro list_clients 

macro_rules! list_clients {
    (@cmd ($cmd:expr) -F $format:expr, $($tail:tt)*) => { ... };
    (@cmd ($cmd:expr) -f $filter:expr, $($tail:tt)*) => { ... };
    (@cmd ($cmd:expr) -t $target_session:expr, $($tail:tt)*) => { ... };
    (@cmd ($cmd:expr)) => { ... };
    () => { ... };
    (($cmd:expr), $($tail:tt)*) => { ... };
    ($($tail:tt)*) => { ... };
}

List all clients attached to the server

Manual

tmux ^3.4:

list-clients [-F format] [-f filter] [-t target-session]
(alias: lsc)

tmux ^1.6:

list-clients [-F format] [-t target-session]
(alias: lsc)

tmux ^1.5:

list-clients [-t target-session]
(alias: lsc)

tmux ^0.8:

list-clients
(alias: lsc)