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Re: [calsify] AD review of draft-ietf-calext-jscalendar-23

Michael H Deckers <michael.h.deckers@googlemail.com> Wed, 19 February 2020 23:32 UTC

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From: Michael H Deckers <michael.h.deckers@googlemail.com>
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To: Barry Leiba <barryleiba@computer.org>, draft-ietf-calext-jscalendar.all@ietf.org
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Subject: Re: [calsify] AD review of draft-ietf-calext-jscalendar-23
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On 2020-02-19 06:58, Barry Leiba wrote:



> 
— Section 1.4.6 —
>
>         signed-duration = (["+"] / "-") duration
>
> I guess this works.  I think this is a bit cleaner.  No?:
>
> NEW
>         signed-duration = ["+" / "-"] duration
> END
>
> (I passed the original by a colleague as a check, and he kept looking
> at it with varying puzzled expressions before he agreed that he
> understood it.  Let’s not make people work that hard.)



    I beg to disagree. The syntax

       (["+"] / "-") duration

    makes it clear that a sign may precede a duration, and that
    the default sign (if none is explicit) is "+". The proposed
    syntax

       ["+"  / "-"] duration

    does not make the default clear.

    Actually, the following text lists the two
    alternatives as in the former syntax rule, so I do
    not expect difficulties in understanding.

    Michael Deckers.

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