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Subject: bug#39693: Any chance of fixing --rfc-3339 to conform to the standard?
Resent-From: Mads Bondo Dydensborg <mabd@HIDDEN>
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From: Mads Bondo Dydensborg <mabd@HIDDEN>
Thread-Topic: Any chance of fixing --rfc-3339 to conform to the standard?
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Date: Thu, 20 Feb 2020 12:39:07 +0000
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Hi there

As have been established in 2006 and again in 2010, the rfc-3339 mandates t=
he use of "T" in a single field timestamp. This is currently not output by =
date (version 8.28)

Actual (example) output by "date --rfc-3339=3Dns"
2020-02-20 13:32:19.315773856+01:00
Expected output by above:
2020-02-20T13:32:19.315773856+01:00

There is a bug report here: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=
=3D6132, that established this as a bug.=20
It seems requirements at the time was for at patch that could also parse th=
e output with T, but as this output is=20
a subset of ISO8601 (with T), this should be trivially fulfilled.

The change is trivial, I believe, including two tests.

Culprit code (from date.c in coreutils)

            static char const rfc_3339_format[][32] =3D
              {
                "%Y-%m-%d",
                "%Y-%m-%d %H:%M:%S%:z",
                "%Y-%m-%d %H:%M:%S.%N%:z"

Tests to be corrected (AFAICT):
     ['epoch-r', '--rfc-3339=3Dsec -d @31536000',
      {OUT=3D>"1971-01-01 00:00:00+00:00"}],

     ['ns-10-r', '--rfc-3339=3Dns', '-d "1969-12-31 13:00:00.00000001-1100"=
',
      {OUT=3D>"1970-01-01 00:00:00.000000010+00:00"}],

     ['ns-max32-r', '--rfc-3339=3Dns', '-d "2038-01-19 03:14:07.999999999"'=
,
      {OUT=3D>"2038-01-19 03:14:07.999999999+00:00"}],

Is there any chance for this to be fixed / a patch to be accepted? Or, woul=
d some other approach be sought to get this error in date fixed?

Br

Mads=20
--=20
Mads Bondo Dydensborg=

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Mads Bondo Dydensborg <mabd@HIDDEN>
Subject: bug#39693: Acknowledgement (Any chance of fixing --rfc-3339 to
 conform to the standard?)
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Date: Thu, 20 Feb 2020 15:32:02 +0000

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Subject: bug#39693: Any chance of fixing --rfc-3339 to conform to the standard?
Resent-From: Paul Eggert <eggert@HIDDEN>
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From: Paul Eggert <eggert@HIDDEN>
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On 2/20/20 4:39 AM, Mads Bondo Dydensborg wrote:
> As have been established in 2006 and again in 2010, the rfc-3339 mandates the use of "T" in a single field timestamp.

No, RFC 3339 explicitly allows the use of space. It says:

       NOTE: ISO 8601 defines date and time separated by "T".
       Applications using this syntax may choose, for the sake of
       readability, to specify a full-date and full-time separated by
       (say) a space character.

This paragraph was put into the RFC at my suggestion, precisely so that GNU 
"date" output wouldn't have to contain that "T".

Tf you want GNU 'date' to output the 'T', you can use 'date --iso-8601=s' 
instead of 'date --rfc-3339=s'. That's the point of having these two options for 
GNU 'date'. If it weren't for this difference in behavior, GNU 'date' wouldn't 
have needed a --rfc-3339 option in the first place, and we shouldn't change the 
meaning of --rfc-3339 to eviscerate the whole point of the option.

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severity 6132 normal
merge 6132 39693
tags 6132 notabug
close 35032

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Subject: merge a couple of 'date' bugs and mark them as not bugs
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severity 6132 normal
merge 6132 39693
tags 6132 notabug
close 35032

Last modified: Thu, 20 Feb 2020 16:30:02 UTC

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