In MacOS Mojave, I am using magit version 20190319.1911, emacs v26.1, git v2.20.1 (Apple Git-117).
How do I get a diffstat in a magit revision buffer? I remember seeing such a diffstat in this buffer, but can't get it now. When I type j in a revision buffer, the response is "no diffstat in this buffer". I can get a diffstat in the log buffer, but I would prefer it in the revision buffer that is automatically updated as I move through commits in the log buffer.