Synopsis:
   on [<modes>]disconnect [<serial#>] [-|^]<match> { <action> }

Description:
   This hook is triggered whenever the ckient is disconnected from a server,
   and it is unable to reconnect to the server itself (assuming the
   AUTO_RECONNECT setting is turned on).  This would be any situation in
   which the client would normally print the following message:

      *** Use /SERVER to connect to a server

Parameters:
   $0    server disconnected from

Examples:
   To customize the disconnection message:
      on ^disconnect "*" {
         echo *** Disconnected from $0 at $Z
      }

See Also:
   disconnect(1); set(5) auto_reconnect