improve Scribble's make-log-based-eval?

[bennn]

Frow WJB:

FWIW, I used this function to implement a caching version that has better
(more automagic) behavior than make-log-based-eval.
You can add it to with-cache if you think it's useful/a good place for it.

(define (make-cached-eval name . rest)
  (define ev
    (make-log-based-eval
     (cachefile name)
     (if (file-exists? (cachefile name))
         'replay
         'record)))
  (for ([r rest])
    (ev r))
  ev)

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The function doesn't use with-cache, but might be a good package addition. William was looking for behavior like make-log-based-eval and came to with-cache, so at least a docs pointer could be useful.