@bagder Yes. I have tried few homographic letters mentioned. slash and fragment are refused by idn2 command, but homographic ? is not refused by tested libidn2. But it seems safe to scan hostname for non-ascii letters. If they appear, normalize displayed name by converting to punnycode and then decoding back again. Can help ridding of strange characters while keeping name presentable in foreign alphabets too. I thought iterpunction were generally forbidden in names.
https://fosstodon.org/@pemensik/113653029180368462
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