[plt-scheme] How do I reload a module that I've "require"d in the REPL?

Jens Axel S,Axgaard writes:
 > For the record:
 > 
 > (load "foo.ss")
 > (require foo)
 > 
 > does what you want.

This approach doesn't get you very far, though.  For example, if
module foo requires module bar, and you edit "bar.ss", then the above
two statements will not load the new version of bar.

--dougo at place.org