xpressengine / xe-core

            }

            list ($email_pref, $input) = explode('@', $input, 2);

            $arr = explode('.', $input);

            foreach ($arr as $k => $v) {

                if (preg_match('!^' . preg_quote($this->_punycode_prefix, '!') . '!', $v)) {

                    $conv = $this->_decode($v);

                    if ($conv) {

                        $arr[$k] = $conv;

                    }

                }

            }

            $input = join('.', $arr);

            $arr = explode('.', $email_pref);

            foreach ($arr as $k => $v) {

            }

            $input = join('.', $arr);

            $arr = explode('.', $email_pref);

            foreach ($arr as $k => $v) {

                if (preg_match('!^' . preg_quote($this->_punycode_prefix, '!') . '!', $v)) {

                    $conv = $this->_decode($v);

                    if ($conv) {

                        $arr[$k] = $conv;

                    }

                }

            }

            $email_pref = join('.', $arr);

            $return = $email_pref . '@' . $input;

        } elseif (preg_match('![:\./]!', $input)) { // Or a complete domain name (with or without paths / parameters)