Le lun. 30 nov. 2020 à 17:17, John Cowan <xxxxxx@ccil.org> a écrit :
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> On Mon, Nov 30, 2020 at 6:30 AM Vasilij Schneidermann <xxxxxx@vasilij.de> wrote:
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>> I've looked at this now and discovered that it must be a procedure as
>> the null value is unique to the engine
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> Why is this?  I'd think the framework should convert the engine-specific null into a universal null.

It really depends on the pack and unpack procedure. Since `pack` and
`unpack` should be only accessed via `engine-pack` and
`engine-unpack`, it makes sense to also have `engine-null`.