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Message-Id: <B016FE28-7F24-4F62-A94B-CCAF3E749728@sonic.net>
Date: Fri, 8 Mar 2024 17:57:14 -0800
From: Guy Harris <gharris@...ic.net>
To: Rich Felker <dalias@...c.org>
Cc: Paul Eggert <eggert@...ucla.edu>, Time zone mailing list <tz@...a.org>,
musl@...ts.openwall.com, James Cloos <cloos@...loos.com>
Subject: Re: [tz] Re: Weird PST8PDT and EST5EDT behavior on Alpine
Linux
On Mar 8, 2024, at 11:02 AM, Rich Felker via tz <tz@...a.org> wrote:
> It's not so much that we ignore it (it's present in tzname[1], and
> would get applied if you use mktime with tm_isdst=1), just that, in
> the absence of a transition rule for it, it's never considered active.
> I don't think this is a particularly good behavior (even though it is
> allowed by POSIX) but nothing great has been proposed as an
> alternative.
The executive summary of this thread appears to be:
Use XXXnnnYYY TZ settings at your own risk, as there's no guarantee how they'll behave. If you want predictable behavior, either use POSIX settings or, if tzdb is present, tzdb settings.
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