Code-Snippets-Functions/Execute a function on a child site/Relevanssi/index-only-short-numbers.txt

add_filter( 'relevanssi_remove_punctuation', function( $str) {
    return implode(
        ' ',
        array_filter(
            explode( ' ', $str ),
            function( $word ) {
                if ( relevanssi_strlen( $word ) < 3 ) {
                    return is_numeric( $word );
                }
                return true;
            }
        )
    );
} );