Re: [whatwg/url] Unicode normalization could change the structure of a URL (#626)

Any kind of Unicode normalization that changes the scalar values of the URL string might change its meaning. A robust setup would eagerly parse a URL string and then serialize the resulting URL record before doing any kind of normalization. At that point the normalization would no-op as a serialized URL is pure ASCII.

I don't think this is in conflict with the recommendation from the i18n WG, but there are some tricky nuances. (As in, if you have a URL string whereby applying NFC would change it and its meaning, you probably better not share it in that form.)

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