save-match-data's return value

[Juanma Barranquero]

save-match-data is implemented via unwind-protect and progn; however,
its docstring does not make any reference regarding the value returned
after its execution, though presumably it'll be the last form in BODY,
as in with-temp-buffer, et al.

Is that a part of the interface of save-match-data, and should be
documented, or does it specifically *no* guarantee about the value it
returns?


                                                           /L/e/k/t/u