my $str = "

					^ <$start_rule> \$

					$rules
			";
			my $link = bless(\$str, 'Regexp::Grammars::Precursor');
			$parser = qr{$link}ixs;

##</code><code>##

			my $str = "

					^ <$start_rule> \$

					$rules
			";
			$parser = qr{$link }ixs;