Re: Fuzzy words [was Uppercase question for RFC2119 words]

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 29 March 2016 23:52 UTC

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Subject: Re: Fuzzy words [was Uppercase question for RFC2119 words]
To: Dave Cridland <dave@cridland.net>, "HANSEN, TONY L" <tony@att.com>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <56FB1547.8030105@gmail.com>
Date: Wed, 30 Mar 2016 12:52:39 +1300
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On 30/03/2016 05:36, Dave Cridland wrote:
> On 29 March 2016 at 16:26, HANSEN, TONY L <tony@att.com> wrote:
> 
>> I also feel that a modified version of the RFC 2119 statement should be
>> defined and specified in a small RFC.
>>
>> I like Dave's addition, but also think adding the word "only" is worth
>> doing:
>>
>>       The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
>>       NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and
>>       "OPTIONAL" in this document are to be interpreted as described in
>>       RFC 2119 only when capitalised.
>>
>> Leaving out the "only" still leaves the statement (slightly) ambiguous;
>> it's the same as the difference between "if" and "if and only if".
>>
>>
> I agree that's an improvement.

I think it's a significant improvement, despite my other comments. However,
we should also insert "NOT RECOMMENDED" (see the erratum #499 on 2119).

    Brian