Comment 8 for bug 385785

Ideally you'd want to use the NautilusFile machinery, since there's a better-than-good chance that the location being entered has already been cached, but NautilusFile isn't exactly the best way to tell if a file /isn't/ there, so you're almost forced to having to roll your own lookup stuff there (with query_async() and friends).

I'm not particularly in favor of this as it adds a whole lot of complexity to something that's pretty simple as it is, and potentially causes some really odd interface bugs, but I guess I shouldn't complain too loudly if I'm not doing the ground work on this ;).