Host is dropped if path contains colon

[felixfbecker]

file:// URLs on Windows typically do not %-encode the colon after the drive letter. When building such URIs, this library drops the host of the base (I assume because it reads it as a port?)

Expected, Chrome:

new URL('/c:/baz/qux', 'file://host/foo/bar').href
"file://host/c:/baz/qux"

Actual, whatwg-url:

new URL('/c:/baz/qux', 'file://host/foo/bar').href
"file:///c:/baz/qux"

It actually happens even when you just set pathname to anything with a colon:

const uri = new URL('file://host/foo')
uri.host // 'host'
uri.pathname = '/c:/bar'
uri.host // ''

[Sebmaster]

Looks to me like that is because in the URL spec in the path state instruction 1.4.1.1 does not use the base URL host.

Open a bug in the official repo if you think that's a bug in the spec.
Closing because I don't think that's a bug in whatwg-url, but can reopen if you think I followed the spec wrong.

[felixfbecker]

Opened whatwg/url#302