megatest> (define (check thunk)
-------->   (condition-case (thunk)
-------->      ((exn file)(print "file error"))
-------->      ((exn timeout)(print "Caught timeout error"))
-------->      (var ()(print "something else"))))
megatest> (check (lambda ()(open-input-file "")))
file error
megatest> (check (lambda ()(signal (make-property-condition 'timeout 'message "Timed out talking to server"))))
something else
megatest> (define (check thunk)
-------->   (condition-case (thunk)
-------->      ((exn file)(print "file error"))
-------->      ((exn 'timeout)(print "Caught timeout error"))
-------->      (var ()(print "something else"))))
megatest> (check (lambda ()(signal (make-property-condition 'timeout 'message "Timed out talking to server"))))