$rule->entire_match= array_shift( $pattern_matches ); // The entire matched string is returned at index 0
$rule->named_arg_values= array_combine($rule->named_args, $pattern_matches);
if(
	strlen($this->action) > 3 && 
	$this->action{0} == '{' && 
	$this->action{1} == '$' && 
	$this->action{strlen($this->action)} == '}'
) 
{
	$subaction = trim($this->action, '{$}');
	if( isset( $rule->named_arg_values[ $subaction ] ) ) {
		$this->action = $rule->named_arg_values[ $subaction ];
	}
}