In article <[email protected]> you write:
>>> Every implementation I know puts space between multiple propspec's
>>> which the current syntax wouldn't allow

>> my understanding was that RFCs decide whether an implementation is
>> incorrect or in the case of a series, not up-to-date. If the authors
>> decided to update the RFC instead, then I'd be happy of course.

In general you're right, but it sometimes happens that the RFC has
mistakes and what it says is not what the WG intended.  In this case
I'm quite sure that the intent is that spaces between propspecs are
required and the ABNF in 8601 is wrong.  Erratum 5435 misunderstood
how ABNF works and somehow we all missed that.

If you look through the archives of the WG you'll see that 8601 is
intended to be a compatible update to 7601, and as you noted the
ABNF change is definitely not compatible.

R's,
John

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