goog.uri.utils/split doesn't parse schemes with periods

[milt]

https://github.com/google/closure-library/blob/6fa0e27a0ef224e2909ecd872d02c9685fa1aa3a/closure/goog/uri/utils.js#L239

Split doesn't parse the scheme if there is a . in it. According to the RFC it is an unreserved char, and it should be OK.

goog.uri.utils.split("foo.bar://domain.tld/baz/quxx");
=>
["foo.bar://domain.tld/baz/quxx", undefined, undefined, undefined, undefined, "foo.bar://domain.tld/baz/quxx", undefined, undefined]

[shicks]

I think your link is a little bit off, since scheme isn't defined in terms of unreserved, but is is defined in Appendix A as ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ), so you're correct that . should be allowed.

That said, I'm a bit puzzled about how to distinguish scheme:hier-part from authority:port, since we currently parse foo.bar:80 as the authority foo.bar with port 80, but if we allow foo.bar to parse as the scheme, then (in my reading) 80 is also a valid hier-part via path-rootless which can be one or more pchar, which includes all unreserved characters (including digits).

Do you have a specific use case in mind?