[calsify] [Technical Errata Reported] RFC5545 (6316)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 22 October 2020 18:28 UTC

To: bernard.desruisseaux@oracle.com, superuser@gmail.com, barryleiba@computer.org, lear@cisco.com
From: RFC Errata System <rfc-editor@rfc-editor.org>
Cc: murch@fastmail.com, calsify@ietf.org, rfc-editor@rfc-editor.org
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Message-Id: <20201022182844.41906F406F6@rfc-editor.org>
Date: Thu, 22 Oct 2020 11:28:44 -0700
Archived-At: <https://mailarchive.ietf.org/arch/msg/calsify/LidYl6kcMJfmTnGYjYojkc_cYBs>
Subject: [calsify] [Technical Errata Reported] RFC5545 (6316)
Precedence: list

The following errata report has been submitted for RFC5545,
"Internet Calendaring and Scheduling Core Object Specification (iCalendar)".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid6316

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Type: Technical
Reported by: Ken Murchison <murch@fastmail.com>

Section: 3.8.5.1

Original Text
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Value Type: The default value type for this property is DATE-TIME.
The value type can be set to DATE.

Corrected Text
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Value Type: The default value type for this property is DATE-TIME.
The value type can be set to DATE. This property MUST have the same
value type as the "DTSTART" property contained within the
recurring component. Furthermore, this property MUST be specified
as a date with local time if and only if the "DTSTART" property
contained within the recurring component is specified as a date
with local time.

Notes
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EXDATE excludes a specific instance of a recurring event and therefore should have the same value type as DTSTART. This is analogous to RECURRENCE-ID which overrides a specific instance and has the same value type as DTSTART.

I will note however that there is iCalendar data in the wild with DTSTART;VALUE=DATE-TIME and EXDATE;VALUE=DATE. If this errata is rejected as incorrect, then a new errata should be opened with additional text describing how EXDATE;VALUE=DATE is supposed to be handled when DTSTART;VALUE=DATE-TIME. For instance, does EXDATE;VALUE=DATE exclude ALL instances of a FREQ=HOURLY recurrence on the given day?

Instructions:
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RFC5545 (draft-ietf-calsify-rfc2445bis-10)
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Title : Internet Calendaring and Scheduling Core Object Specification (iCalendar)
Publication Date : September 2009
Author(s) : B. Desruisseaux, Ed.
Category : PROPOSED STANDARD
Source : Calendaring and Scheduling Standards Simplification
Area : Applications
Stream : IETF
Verifying Party : IESG

[calsify] [Technical Errata Reported] RFC5545 (63… RFC Errata System
Re: [calsify] [Technical Errata Reported] RFC5545… Eliot Lear
Re: [calsify] [Technical Errata Reported] RFC5545… Ken Murchison