<not> ( regexp -- not-regexp )
Regular expression combinators

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Vocabulary
regexp.combinators

Inputs

regexp

a regexp

Outputs

not-regexp

a regexp

Word description
Creates a new regular expression which matches everything that the given regexp does not match.

Definition

USING: regexp.ast regexp.combinators.private sequences ;

IN: regexp.combinators

: <not> ( regexp -- not-regexp )
    [ "(?~" ")" surround ] [ <negation> ] modify-regexp ;
    foldable flushable