date: follow GNU pure-number -d semantics#8907
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sylvestre merged 1 commit intouutils:mainfrom Oct 14, 2025
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Implement GNU 'Pure numbers in date strings' for time-of-day tokens: - 1–2 digits => HH:00 today - 3–4 digits => HHMM today - Validate ranges; reject invalid times (e.g., 2400, 2360) Also: - Add tests for -d0, -d7, -d0700 under TZ=UTC0 and invalid numeric inputs - Reference GNU manual section for pure numbers
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nice, i had a working patch for -d0 but that didn't support -d7, well done |
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Thank you for the fix and the review! |
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This makes -d0, -d7, -d0700 mean “today at HH[:MM]” like GNU date. We pre-parse pure digits (1–2 => HH:00, 3–4 => HHMM), respect -u for UTC, and reject invalid times like 2400/2360.
Fixes #8898.
an earlier change routed -d through parse_datetime and didn’t carry over GNU’s pure-number rule; this brings us back in line with GNU.
reference: https://www.gnu.org/software/coreutils/manual/html_node/Pure-numbers-in-date-strings.html
Tests cover -d0, -d7, -d0700 (TZ=UTC0) and the invalid cases.