[Epic] Calendar-mode comparison #311

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opened 2026-07-01 06:50:26 +00:00 by manlycucumber · 1 comment
manlycucumber commented 2026-07-01 06:50:26 +00:00 (Migrated from github.com)

The cheapest, earliest comparison mode: for a day/range/year, compare what each edition celebrates (feast, rank/class, colour, commemorations, season). Needs only ≥2 calendar engines — available at ~1.0 across the traditional editions (1962/1954/1955). Done when two traditional editions can be diffed for a date range.

Epic — child issues are tracked as sub-issues.

The cheapest, earliest comparison mode: for a day/range/year, compare what each edition celebrates (feast, rank/class, colour, commemorations, season). Needs only ≥2 calendar engines — available at ~1.0 across the traditional editions (1962/1954/1955). Done when two traditional editions can be diffed for a date range. _Epic — child issues are tracked as sub-issues._
manlycucumber commented 2026-07-10 21:44:17 +00:00 (Migrated from github.com)

Epic complete — both children merged in PR #472. Calendar-mode comparison ships: CalendarComparator (compareDay/compareRange, N-way symmetric edition diff on feast/rank/colour/commemorations/season) + SequenceComparator (acrossYears/acrossEditions for the slider), over a text-free src/Compare/ taxonomy that is the pattern-setter for the v2.0 rite/office diff. Documented in docs/design/calendar-comparison-model.md; tests pinned to real engine divergences; adversarial review GO.

Epic complete — both children merged in PR #472. Calendar-mode comparison ships: `CalendarComparator` (compareDay/compareRange, N-way symmetric edition diff on feast/rank/colour/commemorations/season) + `SequenceComparator` (acrossYears/acrossEditions for the slider), over a text-free `src/Compare/` taxonomy that is the pattern-setter for the v2.0 rite/office diff. Documented in docs/design/calendar-comparison-model.md; tests pinned to real engine divergences; adversarial review GO.
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Directorium/Core#311
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