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Re: [Jsonpath] Opsdir last call review of draft-ietf-jsonpath-base-16

"Joe Clarke (jclarke)" <jclarke@cisco.com> Thu, 03 August 2023 22:03 UTC

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From: "Joe Clarke (jclarke)" <jclarke@cisco.com>
To: Carsten Bormann <cabo@tzi.org>
CC: Tim Bray <tbray@textuality.com>, Glyn Normington <glyn.normington.work@gmail.com>, "ops-dir@ietf.org" <ops-dir@ietf.org>, "draft-ietf-jsonpath-base.all@ietf.org" <draft-ietf-jsonpath-base.all@ietf.org>, "jsonpath@ietf.org" <jsonpath@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>
Thread-Topic: [Jsonpath] Opsdir last call review of draft-ietf-jsonpath-base-16
Thread-Index: AQHZxjJMdzw0IsqiTkObpV8KyKOJO6/Y3x1mgAAVQICAABLXgIAAE5uAgAAA7ICAAAM7gIAAASdW
Date: Thu, 03 Aug 2023 22:02:54 +0000
Message-ID: <16C611F9-53A5-4AB9-9B78-7BB514948A83@cisco.com>
References: <169099560074.55569.16694235228971863023@ietfa.amsl.com> <CANH0Gb+ZGHQe71jshjrJpD-HfhuAgWFnb85QKvyzfk699SstTg@mail.gmail.com> <BN9PR11MB53716DDF7BD3A8C194EAF7B5B808A@BN9PR11MB5371.namprd11.prod.outlook.com> <CANH0GbJSY=8cgi5=48bmHEij_DYOLtEcMmhvjhcVjVEsLMt5PA@mail.gmail.com> <CAHBU6iv-FiBNzX4g0+CH+FWZ4cBiibcSLQGdgmRT8sU01DUKDg@mail.gmail.com> <F84FD272-3AE5-4BD3-AF76-799BC5661D57@tzi.org> <CAHBU6iun8r6sg2Mam4D4A1nfd4C68=_JOrkWaazVv8rL_du+Dw@mail.gmail.com> <A7AD3C8E-C7A0-42E3-B3A9-DA6B7D9C0030@tzi.org>
In-Reply-To: <A7AD3C8E-C7A0-42E3-B3A9-DA6B7D9C0030@tzi.org>
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Subject: Re: [Jsonpath] Opsdir last call review of draft-ietf-jsonpath-base-16
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> On Aug 3, 2023, at 17:59, Carsten Bormann <cabo@tzi.org> wrote:
> 
> On 3. Aug 2023, at 23:47, Tim Bray <tbray@textuality.com> wrote:
>> 
>> I really do think that in RFCs, when there’s something that’s optional, it’s really better to say why it’s optional and what might motivate choosing one option or another. 
> 
> But they are not “optional".

Fair.  I was mainly referring to examples like your C return statement.

> 
> They aren’t there:
> 
>   filter-selector     = "?" S logical-expr
> 
> You can use other features of the language to put some there, if you really want to:
> 
>   logical-expr        = logical-or-expr
>   logical-or-expr     = logical-and-expr ...
>   logical-and-expr    = basic-expr ...
> 
>   basic-expr          = paren-expr / ...
> 
>   paren-expr          = [logical-not-op S] "(" S logical-expr S ")"
>                                           ; parenthesized expression
> 
> You could use ?!(!(foo)) as well, and I also wouldn’t say that !(!(…)) is “optional”.
> 
> (I wouldn’t mind adding a note explaining why the parentheses are in the examples where they are.
> But I don’t know why we put them there.)

That works for me.

Joe

> 
> Grüße, Carsten
>

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