This is very good primer on the topic, including unicode normalization, punycode and others, with ultra short python examples and links to more info. https://w

This is very good primer on the topic, including unicode normalization, punycode and others, with ultra short python examples and links to more info. https://www.b-list.org/weblog/2018/feb/11/usernames/ https://www.b-list.org/weblog/2018/feb/11/usernames/