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H-char

Change-h-char

Modifying constructor for h-char structures.

Syntax

(change-h-char x 
               [:code <code>])

This is an often useful alternative to make-h-char.

We construct a new h-char 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-h-char

(defmacro change-h-char (x &rest args)
  (std::change-aggregate 'h-char
                         x args '((:code . h-char->code))
                         'change-h-char
                         'remake-h-char))