AutoLink extension links invalid protocol-only (no host) URIs

It is common to type only “http://” (not followed by any hostname etc) in the process of creating technical documentation.

The AutoLink extension incorrectly attempts to link these, resulting in ugly documentation.

URIs are invalid without a host portion:

URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

hier-part = "//" authority path-abempty
                 / path-absolute
                 / path-rootless
                 / path-empty

authority = [ userinfo "@" ] host [ ":" port ]

• https://tools.ietf.org/html/rfc3986#appendix-A (brackets indicate optionality)

[peckjon]

Wow that was fast @robinst – I see https://github.com/robinst/autolink-java/issues/15 is already fixed!

Thanks for being awesome. Closing out.

[peckjon]

Awesome, Robin! Thanks!!