Inotify backend does not correctly handle one file being watched twice

[povik]

If you start tailing the same file twice (by calling TailFile and supplying an identical filename), and are using the inotify backend, then only one of the Tail objects is notified when a line is appended to the file. Which one of the two objects gets notice is chosen at random, and the one which does then catches up on lines it has slept on in previous appends.

I would expect both of the objects to be notified at each append.

[povik]

It boils down to the two Tail instances internally receiving on the same channel here. I would like to fix this but first I am interested in input on whether the interface provided by watch.Watch, watch.Events, watch.RemoveWatch and friends can have a breaking change. I would expect that no, it can't.

[nxadm]

That's correct, @povik. This looks like a breaking change for v2. I added a discussion thread here: #36.