It looks like from ~24.4 onwards there's support for various notification event sources for auto-revert[-tail]-mode, as determined by the file-notify--library v

It looks like from ~24.4 onwards there's support for various notification event sources for auto-revert[-tail]-mode, as determined by the file-notify--library variable. I don't appear to have anything compiled into my prebuilt OSX emacs though, time to update the ol' source tree and see if I can remember how to build it.