Comment 15 for bug 848065

It looks to me that the problem here is both the "New Printer" dialog and "Authentication" alert require people to concatenate strings -- workgroup, server, port, printer, etc -- and to get the separator and capitalization exactly right each time.

So, why not have separate fields for each of those strings, then in the "New Printer" dialog, display the assembled URL as constantly-updating text underneath the last of those fields?

If the reason is that some people are given a pre-assembled smb:// URL by their IT department, then that constantly-updating URL can be its own editable field. Editing any of the component fields would live-update the URL field below, and editing the URL field would live-update the component fields above.