"if I were trying to find it, the first place I'd look would be the documentation for `equal?' -- and it is indeed there, at the end of the second paragraph."
Part of the problem is that I never tried finding it, because it didn't occur to me that racket would have extensible equal?
A few months ago I was flattened - absolutely flattened - to find out that PLT has optional args and keyword args. (http://arclanguage.org/item?id=12591)
I have no idea why this is. Perhaps the problem is that people expect scheme to be a small language.
Well, the optionals and keyword arguments have been in for a long time now... In fact, the current thing is a second iteration after a first facility that was more CL-like...
In any case, Racket is certainly not a small language...
