#specifically named 'waiting' argument as last argument for cooperative input reading with other punk channel handlers (repl in particular)
#specifically named 'waiting' argument as last argument for cooperative input reading with other punk channel handlers (repl in particular)
#waiting data will be supplied to this handler if the other handler over-read (e.g repl handling ANSI ESC \[6n response on stdin finding other data before the ANSI response.)
#waiting data will be supplied to this handler if the other handler over-read (e.g repl handling ANSI ESC \[6n response on stdin finding other data before the ANSI response.)