Regex schemes

[rickkln]

Is it possible to use a regex in the scheme? Specifically to match:
one://www.host.com/callback
and
two://www.host.com/callback
but not
three://www.host.com/callback

I expected this to work but it doesn't:
(one|two)://www.host.com/callback

There seems to be a commit that added this but no mention in the docs.