When launching the webkit browser using `M-x xwidget-webkit-browse-url` with a
URL such as `gnu.org
`, an xwidget buffer with a blank, white background is
loaded. Entering `https://gnu.org
` works as expected.
In my case, I thought this was indicative of a configuration error and went on a
pretty deep dive trying to build latest emacs and checking all my GTK libraries,
but after someone on IRC suggested I try adding a protocol and it worked, I
believe this is just an elisp error.
I think either an error should be emitted on URLs lacking protocol
specifications or (preferably) the URL would be resolved to a protocol
Seen both on emacs 184.108.40.206 and on 2018-05-04 snapshot (around