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Format-string

Change-format-string

Modifying constructor for format-string structures.

Syntax

(change-format-string x 
                      [:elements <elements>])

This is an often useful alternative to make-format-string.

We construct a new format-string structure that is a copy of x, except that you can explicitly change some particular fields. Any fields you don't mention just keep their values from x.

Definition

This is an ordinary change- macro introduced by fty::defprod.

Macro: change-format-string

(defmacro change-format-string (x &rest args)
  (std::change-aggregate 'format-string
                         x args
                         '((:elements . format-string->elements))
                         'change-format-string
                         'nil))