rg3/youtube-dl — pull request #2199 by jaimeMF (2014-01-22 19:31:41+00:00)
Title: [downloader] Set the progress hook’s status to ‘already_downloaded’ if the file has already been downloaded (closes #2144)

If someone listening to the progress hook doesn't care about the difference, checking for `finished` or `already_downloaded` will be enough.