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Re: [calsify] More erratas (RFC 5545)

Neil Jenkins <neilj@fastmailteam.com> Wed, 31 January 2024 05:29 UTC

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Date: Wed, 31 Jan 2024 16:29:11 +1100
From: Neil Jenkins <neilj@fastmailteam.com>
To: Francesca Palombini <francesca.palombini=40ericsson.com@dmarc.ietf.org>, Ken Murchison <murch@fastmail.com>, "calsify@ietf.org" <calsify@ietf.org>, Bernard Desruisseaux <bernard.desruisseaux@oracle.com>
Cc: "calext-chairs@ietf.org" <calext-chairs@ietf.org>
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Subject: Re: [calsify] More erratas (RFC 5545)
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On Wed, 17 Jan 2024, at 01:46, Francesca Palombini wrote:
> I understand that this is an omission, or a “bug”, and should be fixed. My question (to you, but also to the author of RFC 5545, and to the chairs and the working group in general) is: is the resolution suggested by this errata in line with the original intent?

I would say yes, the resolution is the original intent, it was just underspecified in the document. The description text says:

      The final recurrence set is generated by gathering all of the
      start DATE-TIME values generated by any of the specified "RRULE"
      and "RDATE" properties, and then excluding any start DATE-TIME
      values specified by "EXDATE" properties.  This implies that start
      DATE-TIME values specified by "EXDATE" properties take precedence
      over those specified by inclusion properties (i.e., "RDATE" and
      "RRULE").

The section I've highlighted implies to me we should just be looking at exact matches rather than trying to compare with different data types (and that DTSTART, RDATE, and EXDATE must all have the same format, whether that's DATE or DATE-TIME).

Cheers,
Neil.

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