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Regex-group

Change-regex-group

Modifying constructor for regex-group structures.

Syntax

(change-regex-group x 
                    [:pat <pat>] 
                    [:index <index>])

This is an often useful alternative to make-regex-group.

We construct a new regex-group 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 defprod.

Macro: change-regex-group

(defmacro change-regex-group (x &rest args)
  (std::change-aggregate 'regex-group
                         x args
                         '((:pat . regex-group->pat)
                           (:index . regex-group->index))
                         'change-regex-group
                         'nil))