mouse-set-font should make a checkmark or something

[jidanni]

Gentlemen, use mouse-set-font, then use it again, going to
where you were the first time. Notice how it's just not
going to tell you what font is in effect right now, even
though we are staring right at it now. Nope. No hint in
the menu there of the current font in effect. Nope, you'll
just have to get that information elsewhere. emacs-version
"22.1.1".