[url] Add a note in the URL parser. (#78)

When reading this part of the parser I first thought that it was possible to enter the relative state with a non-relative base URL, which would lead to instructions that don’t make much sense. I’m now convinced that is not possible, but the reason is subtle and worth noting.

I did not include regenerating `url.html` as the diff would be noisy, I seem to have a different version of Bikeshed.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/url/pull/78

-- Commit Summary --

  * Add a note in the URL parser.

-- File Changes --

    M url.bs (6)

-- Patch Links --

https://github.com/whatwg/url/pull/78.patch
https://github.com/whatwg/url/pull/78.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/url/pull/78