trying to open incorrect http URL creates file history entry

[Elaine Meng]

I don't know if this is fixable, since although this generates a "not found" error, it is in the browser window, not like other command errors shown in the log. For example, command:

open ​http://www.rbvi.ucsf.edu/blah.html

adds an entry in the File History even though the file doesn't exist. The entry doesn't show up right away, but if you quit/restart (or hide/show Rapid Accdss) it is there.

[Tom Goddard]

The open command does not detect an error when the URL is bad and so it goes into the file history, and pops up the Help window showing "Not Found". I think this should cause a normal "open" command error (just like a missing local file) and not show the Help window.

[Greg Couch]

HTML files are delegated to the help viewer to show. Which uses QWebEngine's setURL method to set the URL. That method does not return anything, so you can't synchronously tell if the URL loaded or not.

Need to investigate how to block until a URL is sucessfully loaded or fails.

[Greg Couch]

Fixed by fix for #706.