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Re: [MMUSIC] [Technical Errata Reported] RFC5245 (3952)

Ari Keränen <ari.keranen@ericsson.com> Wed, 09 April 2014 12:30 UTC

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Date: Wed, 09 Apr 2014 15:30:19 +0300
From: Ari Keränen <ari.keranen@ericsson.com>
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Cc: Flemming Andreasen <fandreas@cisco.com>
Subject: Re: [MMUSIC] [Technical Errata Reported] RFC5245 (3952)
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On 04/04/14 18:37, Martin Thomson wrote:
> On 4 April 2014 04:42, RFC Errata System <rfc-editor@rfc-editor.org> wrote:
>> Can i know why the priority is maximum of 10 DIGIT length? If possible we may decrease to 9 DIGIT, so that the value will be fit into integer of 32bit.
>
> I don't think that the ABNF has to be perfectly prescriptive.  There
> is text that covers the actual limit (2^32-1).  An exact ABNF would be
> much harder to understand.
>
> Anyone using ABNF and only ABNF to validate syntax is welcome to
> construct a more precise grammar for their needs.  What is described
> here is perfectly adequate for an RFC.

I agree with Martin and to clarify: you need up to 10 decimal digits to 
express the whole range of 32 bit integers and hence "1*9 DIGIT" would 
not be sufficient.


Cheers,
Ari

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