[rfc-i] Proposed way forwards on backward compatibility with v2

Julian Reschke julian.reschke at gmx.de
Mon Feb 17 13:11:54 PST 2014


On 2014-02-17 21:50, Dave Crocker wrote:
> On 2/17/2014 11:39 AM, Paul Hoffman wrote:
>> - Say that, if there is ever a v4 format, it is possible for the
>> deprecated bits from v2 will be removed at that time.
>
>
> As rfc2822 demonstrates, that model doesn't work.
>
> And in this case it isn't appropriate to try.  There is nothing 'broken'
> in the current version.  There is merely the desire for some additional
> features.

There are certain things we'll want to discourage, because they are 
workarounds for missing stuff. Whether we'll be able to remove those is 
a separate question (I hope we can if there's sufficient time between 
deprecation and removal).

Best regards, Julian



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