[Tools-discuss] Re: [ABNF] Legal or not legal to have literal numbers?

["Jutta Degener" <jutta at panix.com>]

[Stephane Bortzmeyer]
> 
> 
> The attached grammar, extracted from
> draft-greifenberg-mmusic-img-urn-02, is accepted by half of the ABNF
> checking tools and refused by the other half.
> 
> The controversial issue is:
> 
> MM             = ( 0 DIGIT )
>                    ^
>                    Literal number
> 
> I believe it is not authorized by RFC 4234. Among the programs:

I agree -- my abnfgen up to version 0.8 gets it wrong.
To be fixed, just not tonight.

(Abnfgen doesn't enforce the restriction against white space in
repetition specifications -- I hadn't noticed it until now!)

Thanks for letting me know about this!

Jutta

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