On 2024-03-23 15:11, Corinna Vinschen via Cygwin-apps wrote:
On Mar 23 10:38, Brian Inglis via Cygwin-apps wrote:
It looks to me that tzset.c prioritizes the Windows label over the country,
and it may be a better match prioritizing the country over the label, if the
country is not 001/"", nor ZZ, which are the generic entries.
The Windows timezone is the relevant setting in the first place becasue
that's what indicvates the actual local time *as the user chose*.
The territory should only be a secondary hint to choose the right
POSIX entry.
For instance, I know people always using UTC, independently of their
territory setting. If the territory rules, this user choice would be
broken in Cygwin.
It also is not clear what tzset should do when tzmap has a list of zones to
choose from, for example:
{ L"Mountain Standard Time", L"CA", L"America/Edmonton
America/Cambridge_Bay America/Inuvik" },
{ L"Mountain Standard Time", L"US", L"America/Denver America/Boise" },
{ L"US Mountain Standard Time", L"CA", L"America/Creston
America/Dawson_Creek America/Fort_Nelson" },
it currently just prints the first, but perhaps it should print all relevant
entries and the caller should handle the alternatives?
tzset is called from the shell default profile. It has to use exactly
one, valid entry, so time works as desired without forcing interactivity.
If the user doesn't like it, the user can always override tzset's choice
in her own profile.
I have released and announced a test package of tzdata 2024a-2 split into three
install packages: base tzdata, optional tzdata-right, and redundant
tzdata-posix, each containing all the legacy zones so that tzset continues to
work as before.
I could not reduce the base installed zones by many, because most were used by
tzset, but I did drop a couple of large zone source files, produced by the
build, that were previously included to allow users to see the source zones,
rules, and links in effect, saving ~1MB, and dropping the overall default base
installed file sizes by ~80% to ~20% of current, and download tar size by ~60%
to ~40%; for all zones aggregate total installed file sizes are dropped by ~35%
to ~65%, and download tar sizes by ~30% to ~70% of current:
install tar tzdata
721KB 172KB base
984KB 78KB right
669KB 74KB posix
1367KB 444KB source
3667KB 452KB current
Please check out the announcement, cygwin list echo, source and install package
summary web pages, cygport changes, setup entries, scallywag builds, and let me
know if there is anything you see that could benefit from improvement.
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry
