If they would have the same rules as browsers this basically wouldn't be an issue. Those rules are along the lines of "don't mix character sets unless under a c

If they would have the same rules as browsers this basically wouldn't be an issue. Those rules are along the lines of "don't mix character sets unless under a ccTLD for that character set". See here: https://www.chromium.org/developers/design-documents/idn-in-google-chrome https://www.chromium.org/developers/design-documents/idn-in-...