Some info no-one has mentioned yet: The Go distribution comes with a program called gofmt which provides a standardized format for the language. You can run golfed Go through it and get clean output. See this example.
I am always using Emacs so I initially started thinking there would be no Go mode for Emacs and asked this question. Then a minute after I'd asked I had the notion to do find . -name "*.el" at the top of the Go source tree and was able to answer my own question. Some other people seem to have found the answer useful.
