GNU bug report logs - #6132
date: --rfc-3339=TIMESPEC option doesn't print 'T'

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "F. Alexander Njemz" <f.alexander.njemz <at> googlemail.com>
To: bug-coreutils <at> gnu.org
Subject: bug in date: --rfc-3339=TIMESPEC option doesn't print 'T'
Date: Fri, 07 May 2010 15:25:53 +0200

[Message part 1 (text/plain, inline)]

Hi,

as evidenced here [1] the slightly ambiguous wording in the RFC 3339 [2]
seems to be the reason that the date utility using the 
--rfc3339=TIMESPEC switch formats the date with a space instead of a 'T'.

I was confused as well, so I took the liberty to mail the authors of the
RFC in question. I attached the reply from Mr. Klyne.

There is also a patch attached.


Regards,

F. Alexander Njemz




[1] http://lists.gnu.org/archive/html/bug-coreutils/2006-05/msg00014.html

[2] http://www.ietf.org/rfc/rfc3339.txt

[rfc3339 is the T mandatory?.eml (message/rfc822, attachment)]

[date-rfc-3339-DIFF (text/plain, attachment)]

Message #8 received at 6132 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: "F. Alexander Njemz" <f.alexander.njemz <at> googlemail.com>
Cc: 6132 <at> debbugs.gnu.org
Subject: Re: bug#6132: bug in date: --rfc-3339=TIMESPEC option doesn't print
	'T'
Date: Fri, 07 May 2010 09:55:35 -0600

[Message part 1 (text/plain, inline)]

On 05/07/2010 07:25 AM, F. Alexander Njemz wrote:
> Hi,
> 
> as evidenced here [1] the slightly ambiguous wording in the RFC 3339 [2]
> seems to be the reason that the date utility using the
> --rfc3339=TIMESPEC switch formats the date with a space instead of a 'T'.
> 
> I was confused as well, so I took the liberty to mail the authors of the
> RFC in question. I attached the reply from Mr. Klyne.
> 
> There is also a patch attached.

Thanks for the report, and also for the patch.  However, I'm reluctant
to create a date format that we cannot then reparse.  So before we apply
this patch, we would first need a patch to gnulib's getdate.y that
allows parsing of an rfc3339 style with a 'T' instead of a space.

-- 
Eric Blake   eblake <at> redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

[signature.asc (application/pgp-signature, attachment)]

Message #11 received at 6132 <at> debbugs.gnu.org (full text, mbox):

From: "F. Alexander Njemz" <f.alexander.njemz <at> googlemail.com>
To: Eric Blake <eblake <at> redhat.com>
Cc: 6132 <at> debbugs.gnu.org,
	"F. Alexander Njemz" <f.alexander.njemz <at> googlemail.com>
Subject: Re: bug#6132: bug in date: --rfc-3339=TIMESPEC option doesn't print
	'T'
Date: Sat, 08 May 2010 10:33:08 +0200

[Message part 1 (text/plain, inline)]

On 05/07/2010 05:55 PM, Eric Blake wrote:
> On 05/07/2010 07:25 AM, F. Alexander Njemz wrote:
>    
>> Hi,
>>
>> as evidenced here [1] the slightly ambiguous wording in the RFC 3339 [2]
>> seems to be the reason that the date utility using the
>> --rfc3339=TIMESPEC switch formats the date with a space instead of a 'T'.
>>
>> I was confused as well, so I took the liberty to mail the authors of the
>> RFC in question. I attached the reply from Mr. Klyne.
>>
>> There is also a patch attached.
>>      
> Thanks for the report, and also for the patch.  However, I'm reluctant
> to create a date format that we cannot then reparse.  So before we apply
> this patch, we would first need a patch to gnulib's getdate.y that
> allows parsing of an rfc3339 style with a 'T' instead of a space.
>
>    


Hi Mr. Blake, hi mailing list,

I'm looking into getdate.y.
Mr. Newman has replied as well (see attachment).

I don't think Mr. Newman's mail applies to the date command, since IMHO 
date returns a
single field.

What do you think?

Regards,

F. Alexander Njemz

[rfc3339 is the T mandatory?.eml (message/rfc822, attachment)]

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