> The editors you list all must open a file in response to some user action, right? They don't just automatically know that I want to edit ~/Documents/blah.txt.

> The editors you list all must open a file in response to some user action, right? They don't just automatically know that I want to edit ~/Documents/blah.txt. Ditto for the unarchivers and video players. You open a playlist of files or a video file with linked subtitles, then you need to be able to open another file, that can be arbitrary located.