If url is https://example.com/~foo, is https://example.com/~foobar matched?
The relevant extension code seems to say "no", but I think it'd be good to clarify in the spec.
If `url` is `https://example.com/~foo`, is `https://example.com/~foobar` matched?
[The relevant extension code](https://codeberg.org/robida/human.json/src/commit/f8c493e695c25067d5400a093ed594e60fe06c3a/extension/lib/url-utils.js#L48-L61) seems to say "no", but I think it'd be good to clarify in the spec.