formatter control-string => function
Arguments and Values:
control-string---a format string; not evaluated.
Returns a function which has behavior equivalent to:
#'(lambda (*standard-output* &rest arguments) (apply #'format t control-string arguments) arguments-tail)
where arguments-tail is either the tail of arguments which has as its car the argument that would be processed next if there were more format directives in the control-string, or else nil if no more arguments follow the most recently processed argument.
(funcall (formatter "~&~A~A") *standard-output* 'a 'b 'c) >> AB => (C) (format t (formatter "~&~A~A") 'a 'b 'c) >> AB => NIL
Side Effects: None.
Affected By: None.
Might signal an error (at macro expansion time or at run time) if the argument is not a valid format string.