by Jens.Alfke:

url.Parse behaves incorrectly on a URL with an empty hostname, e.g.
"file:///foo". This URL is equivalent to "file://localhost/foo";, but
the resulting URL's Path will incorrectly be "///foo" instead of
"/foo".

What steps will reproduce the problem?
Run http://play.golang.org/p/CJJ1OU8QRq
The body of this is:
    url, _ := url.Parse("file://localhost/foo/bar";)
    fmt.Printf("When URL host is %q, path is %q\n", url.Host, url.Path)
    url, _ = url.Parse("file:///foo/bar")
    fmt.Printf("When URL host is %q, path is %q\n", url.Host, url.Path)

What is the expected output?
When URL host is "localhost", path is "/foo/bar"
When URL host is "", path is "/foo/bar"

What do you see instead?
When URL host is "localhost", path is "/foo/bar"
When URL host is "", path is "///foo/bar"

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g, I think (just using "go run")

Which operating system are you using?
Mac OS X 10.8.2

Which version are you using?  (run 'go version')
1.0.3