[Kea-users] [Kea 1.2] configuration - cannot end the last element of a list with a comma

[Chaigneau, Nicolas]

Hello Francis,


Thanks for the feedback.

I understand that the JSON standard does not allow for trailing commas.

There are other things it doesn't allow: comments. But I think we can agree they are very convenient :)

Trailing commas are convenient. I think they should be allowed, if there are no drawbacks in doing so.



Regards,
Nicolas.


-----Message d'origine-----
De : Francis Dupont [mailto:fdupont at isc.org] 
Envoyé : mardi 9 mai 2017 10:15
À : Chaigneau, Nicolas
Cc : kea-users at lists.isc.org
Objet : Re: [Kea-users] [Kea 1.2] configuration - cannot end the last element of a list with a comma

"Chaigneau, Nicolas" writes:
> I've noticed that Kea configuration parser is stricter now in Kea 1.2 
> (as com pared to 1.1.0).
> 
> Now the last element of a list cannot be terminated with a comma.
> Is this on purpose ?

=> yes, according to the JSON standard (aka ECMA 404) it is forbidden to put a comma ',' before a closing bracket ']' (cf Figure 3 -- array at page 3 of the ECMA pdf).

Thanks

Francis Dupont <fdupont at isc.org>

PS: as it is a bug in the 1.1.0 parser which needs to be fixed (in 1.3, not backward) can you send this incorrect piece of config so I can open a ticket with it?
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