Alright, yeah. Looks like this user is doing some weird unicode things with their display name. The user is m_f@discuss.online, but they have somehow transposed and reversed part of that. Looks like we are going to have to sanitize user display names to try to prevent this as it is misleading.
For the other point, I am not clear on the issue. Is it a problem when a url has http somewhere else in the url? If you put an example inside a code block or inline code, it shouldn't choke on your input.
