GNU bug report logs -
#35632
date Parse of '13:00 + 2 hours' Broken.
Previous Next
Reported by: Ralph Corderoy <ralph <at> inputplus.co.uk>
Date: Wed, 8 May 2019 11:58:01 UTC
Severity: normal
Tags: notabug
Done: Assaf Gordon <assafgordon <at> gmail.com>
Bug is archived. No further changes may be made.
To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 35632 in the body.
You can then email your comments to 35632 AT debbugs.gnu.org in the normal way.
Toggle the display of automated, internal messages from the tracker.
Report forwarded
to
bug-coreutils <at> gnu.org
:
bug#35632
; Package
coreutils
.
(Wed, 08 May 2019 11:58:01 GMT)
Full text and
rfc822 format available.
Acknowledgement sent
to
Ralph Corderoy <ralph <at> inputplus.co.uk>
:
New bug report received and forwarded. Copy sent to
bug-coreutils <at> gnu.org
.
(Wed, 08 May 2019 11:58:01 GMT)
Full text and
rfc822 format available.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
Hi,
Using date from coreutils 8.31-1 on Arch Linux.
This surprised me.
$ TZ=UTC0 /bin/date -d '1pm + 2 hours'
Wed 8 May 15:00:00 UTC 2019
$ TZ=UTC0 /bin/date -d '13:00 + 2 hours'
Wed 8 May 12:00:00 UTC 2019
The documentation doesn't suggest `1pm' and `13:00' are treated
differently. `--debug' helps.
$ TZ=UTC0 /bin/date --debug -d '1pm + 2 hours'
date: parsed time part: 01:00:00pm
date: parsed relative part: +2 hour(s)
...
$ TZ=UTC0 /bin/date --debug -d '13:00 + 2 hours'
date: parsed time part: 13:00:00 UTC+02
date: parsed relative part: +1 hour(s)
date: input timezone: parsed date/time string (+02)
...
It looks like parsing is broken in the second case.
The result I wanted can also be obtained my omitting the `+'.
$ TZ=UTC0 /bin/date -d '1pm 2 hours'
Wed 8 May 15:00:00 UTC 2019
$ TZ=UTC0 /bin/date -d '13:00 2 hours'
Wed 8 May 15:00:00 UTC 2019
--
Cheers, Ralph.
Information forwarded
to
bug-coreutils <at> gnu.org
:
bug#35632
; Package
coreutils
.
(Wed, 26 Jun 2019 14:54:02 GMT)
Full text and
rfc822 format available.
Message #8 received at 35632 <at> debbugs.gnu.org (full text, mbox):
tag 35632 notabug
close 35632
stop
Hello,
(sorry for the delayed reply)
On Wed, May 08, 2019 at 12:57:10PM +0100, Ralph Corderoy wrote:
>
> Using date from coreutils 8.31-1 on Arch Linux.
> This surprised me.
>
> $ TZ=UTC0 /bin/date -d '1pm + 2 hours'
> Wed 8 May 15:00:00 UTC 2019
> $ TZ=UTC0 /bin/date -d '13:00 + 2 hours'
> Wed 8 May 12:00:00 UTC 2019
>
> The documentation doesn't suggest `1pm' and `13:00' are treated
> differently. `--debug' helps.
>
> $ TZ=UTC0 /bin/date --debug -d '1pm + 2 hours'
> date: parsed time part: 01:00:00pm
> date: parsed relative part: +2 hour(s)
> ...
> $ TZ=UTC0 /bin/date --debug -d '13:00 + 2 hours'
> date: parsed time part: 13:00:00 UTC+02
> date: parsed relative part: +1 hour(s)
> date: input timezone: parsed date/time string (+02)
> ...
>
> It looks like parsing is broken in the second case.
Thank you for for providing detailed output with "--debug",
makes things easier to troubleshoot.
When encountering a time string (HH:MM or HH:MM:SS) followed by a plus
sign and a number, date's parser *always* treats it as a timezone
(giving timezones higher priority than time adjustments).
> The result I wanted can also be obtained my omitting the `+'.
>
> $ TZ=UTC0 /bin/date -d '1pm 2 hours'
> Wed 8 May 15:00:00 UTC 2019
> $ TZ=UTC0 /bin/date -d '13:00 2 hours'
> Wed 8 May 15:00:00 UTC 2019
And this is indeed one possibly solution.
Other similar issues are detailed here:
https://lists.gnu.org/archive/html/bug-coreutils/2018-10/msg00126.html
As such, I'm closing this ticket, but discussion can continue by
replying to this thread.
regards,
- assaf
Added tag(s) notabug.
Request was from
Assaf Gordon <assafgordon <at> gmail.com>
to
control <at> debbugs.gnu.org
.
(Wed, 26 Jun 2019 14:54:02 GMT)
Full text and
rfc822 format available.
bug closed, send any further explanations to
35632 <at> debbugs.gnu.org and Ralph Corderoy <ralph <at> inputplus.co.uk>
Request was from
Assaf Gordon <assafgordon <at> gmail.com>
to
control <at> debbugs.gnu.org
.
(Wed, 26 Jun 2019 14:54:02 GMT)
Full text and
rfc822 format available.
bug archived.
Request was from
Debbugs Internal Request <help-debbugs <at> gnu.org>
to
internal_control <at> debbugs.gnu.org
.
(Thu, 25 Jul 2019 11:24:09 GMT)
Full text and
rfc822 format available.
This bug report was last modified 4 years and 268 days ago.
Previous Next
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.