<no hat> On Nov 27, 2013, at 5:00 PM, Alex Russell <slightlyoff@xxxxxxxxxx> wrote: > Will you also be citing ECMA-404 normatively to avoid this sort of divergence in the future? If you believe that ECMA-404 will change in the future, that would indicate that ECMA might break interoperability with current implementations, even for what they perceive as "good reasons". In general, the IETF tries not to have its long-lived standards normatively latch on to moving targets for this very reason. Even when other SDOs have assured us that they will not make backwards-incompatible changes, they have done so anyway (cue the Klensin-esqe theme music...), and that has caused serious interoperability problems for the IETF specs. --Paul Hoffman