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date: extend tz abbreviation lookup #11229

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Merged
cakebaker merged 1 commit into from
Mar 7, 2026
Merged

date: extend tz abbreviation lookup #11229

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3 changes: 3 additions & 0 deletions src/uu/date/src/date.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -756,6 +756,7 @@ fn make_format_string(settings: &Settings) -> &str {
static FIXED_OFFSET_ABBREVIATIONS: &[(&str, i32)] = &[
("UTC", 0),
("GMT", 0),
("MEST", 7200), // UTC+2 Middle European Summer Time
// US timezones (GNU compatible)
("PST", -28800), // UTC-8
("PDT", -25200), // UTC-7
Expand All @@ -776,6 +777,8 @@ static FIXED_OFFSET_ABBREVIATIONS: &[(&str, i32)] = &[
// German timezones
("MEZ", 3600), // UTC+1
("MESZ", 7200), // UTC+2
// Asian timezones
("KST", 32400), // UTC+9 Korean Standard Time
];
/* spell-checker: enable */

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25 changes: 24 additions & 1 deletion tests/by-util/test_date.rs
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Expand Up @@ -3,7 +3,7 @@
// For the full copyright and license information, please view the LICENSE
// file that was distributed with this source code.
//
// spell-checker: ignore: AEDT AEST EEST NZDT NZST Kolkata Iseconds févr février janv janvier mercredi samedi sommes juin décembre Januar Juni Dezember enero junio diciembre gennaio giugno dicembre junho dezembro lundi dimanche Montag Sonntag Samstag sábado febr
// spell-checker: ignore: AEDT AEST EEST NZDT NZST Kolkata Iseconds févr février janv janvier mercredi samedi sommes juin décembre Januar Juni Dezember enero junio diciembre gennaio giugno dicembre junho dezembro lundi dimanche Montag Sonntag Samstag sábado febr MEST KST

use std::cmp::Ordering;

Expand Down Expand Up @@ -1173,6 +1173,16 @@ fn test_date_tz_abbreviation_fixed_offset_outside_season() {
.arg("+%F %T %Z")
.succeeds()
.stdout_is("2026-01-15 16:00:00 UTC\n");

// MEST (UTC+2) used in winter
new_ucmd!()
.env("TZ", "UTC")
.arg("-u")
.arg("-d")
.arg("2026-01-15 10:00 MEST")
.arg("+%F %T %Z")
.succeeds()
.stdout_is("2026-01-15 08:00:00 UTC\n");
}

#[test]
Expand Down Expand Up @@ -2813,3 +2823,16 @@ fn test_date_debug_current_time() {
// No parsing happens for "now", so no debug output
assert_eq!(stderr, "");
}

#[test]
fn test_korean_time_zone() {
// KST (UTC+9 korean standard time) used in winter
new_ucmd!()
.env("TZ", "UTC")
.arg("-u")
.arg("-d")
.arg("2026-01-15 10:00 KST")
.arg("+%F %T %Z")
.succeeds()
.stdout_is("2026-01-15 01:00:00 UTC\n");
}
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