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From: Lars Ingebrigtsen <larsi@gnus.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: Eli Zaretskii <eliz@gnu.org>,
	55635-done@debbugs.gnu.org, Maxim Nikulin <m.a.nikulin@gmail.com>
Subject: bug#55635: `make-decoded-time' incorrectly sets DST to nil, it should be -1 (guess)
Date: Sun, 29 May 2022 15:10:19 +0200	[thread overview]
Message-ID: <87sfos1o3o.fsf@gnus.org> (raw)
In-Reply-To: <d2be51a2-fbce-82d7-a0d9-e02e05854383@cs.ucla.edu> (Paul Eggert's message of "Sat, 28 May 2022 10:25:51 -0700")

Paul Eggert <eggert@cs.ucla.edu> writes:

> With that in mind, here are three suggestions.
>
> 1. decoded-time-dst should return -1, instead of nil, when given a
> 6-element list, since nil means standard time and -1 means DST is
> unknown.

I think that sounds correct.

> 2. make-decoded-time should generate a six-element list unless given a
> DST or ZONE arg.

I don't think we should do this.  Yes, the remaining elements are
nonsensical when talking about intervals, but people rely on that
function to return its documented value.  If somebody wants to do
interval calculations and passes in a DST to make-decoded-time, that's a
classic "well, don't do that" situation.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





  reply	other threads:[~2022-05-29 13:10 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-25 14:46 bug#55635: `make-decoded-time' incorrectly sets DST to nil, it should be -1 (guess) Maxim Nikulin
2022-05-26 12:13 ` Lars Ingebrigtsen
2022-05-27  2:11   ` Paul Eggert
2022-05-27 10:40     ` Lars Ingebrigtsen
2022-05-27 19:26       ` Paul Eggert
2022-05-28 10:41         ` Lars Ingebrigtsen
2022-05-28 16:31           ` Maxim Nikulin
2022-05-28 16:53             ` Eli Zaretskii
2022-05-28 17:25               ` Paul Eggert
2022-05-29 13:10                 ` Lars Ingebrigtsen [this message]
2022-05-29 22:04                   ` Paul Eggert
2022-05-31 12:25                     ` Maxim Nikulin
2022-06-13 21:30                       ` Paul Eggert
2022-06-14 15:57                         ` Maxim Nikulin

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