Watcher has not been changed much since it was originally published. As long as you have at least version 1.3, you are not very far from the current version which is 1.4.
I am not planning on enhancing watcher due to lack of time. I am, however, interested in any bugfixes or changes that enhance portability.
Version 1.4.1 is available from http://http.i-pi.com/watcher.tar.gz.
Version 1.3 is available from ftp://ftp.unm.edu/pub/unix/Watcher.tar.Z. It is also available at many archive sites throughout the Internet.
Kenneth Ingham Consulting home page.