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date: Include hash at compile time instead of HashMap-ping #10702

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date: Include hash at compile time instead of HashMap-ping#10702
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@oech3

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@oech3
oech3
opened on Feb 4, 2026

coreutils/src/uu/date/src/date.rs

Lines 692 to 697 in 0589d2c

static TZ_ABBREV_CACHE: OnceLock<HashMap<String, String>> = OnceLock::new();
/// Build timezone abbreviation lookup map from IANA database.
/// Uses preferred mappings for disambiguation, then searches all timezones.
fn build_tz_abbrev_map() -> HashMap<String, String> {
let mut map = HashMap::new();

I'm not 100% sure. But can we determine them at compile time? @xtqqczze

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