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| ANSI Common Lisp 22 Printer 22.4 Dictionary of Printer
22.4.2 formatter | Macro
  Syntax: formatter control-string function Arguments and Values: control-string - a format string; not evaluated. function - a function. Description: 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. Examples:
      (funcall (formatter "~&~A~A") *standard-output* 'a 'b 'c)
       AB
       (C)

      (format t (formatter "~&~A~A") 'a 'b 'c)
       AB
        NIL
Exceptional Situations: Might signal an error (at macro expansion time or at run time) if the argument is not a valid format string. See Also: format Allegro CL Implementation Details: None.

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