Major Section: MISCELLANEOUS
General Form: (set-wormhole-data whs data)
See wormhole. Whs should be a well-formed wormhole status; data is
arbitrary. This function returns a new status with the same entry code as
whs but with the new data. It avoids unnecessary consing if the data
for whs is already set to data. This function does not affect state
or a wormhole's hidden status. It just returns a (possibly) new status
object suitable as the value of the lambda expressions in
wormhole-eval and wormhole.