Comment 11 for bug 339772

application/x-bittorrent support could be an nsIURIContentListener; to show the
info in the dl manager, it could create an nsIDownload object and call its
nsIWebProgressListener methods normally. This is doable as an extension.

This would mean that this would be invoked when the file would otherwise be
shown by mozilla (left-click on the file), but not when saving the .torrent file
to disk (right-click, save target as).

Wow. This is a way for which these APIs work extremely well. I'm surprised, I
didn't think such a way existed.

whoa, how could this bug get 9 comments within an hour or so?