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Give Sunday Matins Nocturn III its own antiphon Septuagesima-Palm Sunday

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It was hardcoded to "Allelúja, allelúja, allelúja" year-round. Each of
the 9 Sundays from Septuagesima through Palm Sunday has its own
Gospel-tied antiphon instead, live-verified against Monastic Tridentinum
1617; Lent 1-4 also swap in their own canticles, and Lent 1-4 plus
Passion/Palm Sunday swap in their own versicle. New
matins-sunday-nocturn3-overrides.yml, keyed by temporalId and merged
over the base nocturn3 group by hours/matins.ts's new
sundayNocturn3For — only the real-Sunday branch uses it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017XMSokiTD2Qc5vPP2YQu3Q
This commit is contained in:
Will Estes
2026-09-01 08:17:14 -04:00
parent 36e2cc60cd
commit 3d221c2a45
3 changed files with 188 additions and 1 deletions
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src/hours/matins.ts
+20 -1
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@@ -94,6 +94,7 @@ import { getNocturnReadings, type NocturnReading } from '../propers/nocturn-read
import { getOctaveReading } from '../propers/octave-readings';
import { getMatinsSaintOverride, getMatinsCommonOverride, type MatinsPsalmodyScheme } from './matins-psalmody-overrides';
import matinsSundayAntiphonsData from '../data/hours/matins-sunday-antiphons.yml';
import matinsSundayNocturn3OverridesData from '../data/hours/matins-sunday-nocturn3-overrides.yml';
import matinsFerialAntiphonsData from '../data/hours/matins-ferial-antiphons.yml';
import type { Weekday } from '../calendar/types';
@@ -126,6 +127,24 @@ interface MatinsSundayAntiphons {
}
const sundayAntiphons = matinsSundayAntiphonsData as unknown as MatinsSundayAntiphons;
// Septuagesima through Palm Sunday inclusive: Nocturn III takes a
// per-Sunday antiphon (and, for some of these Sundays, its own canticles/
// versicle too) instead of the plain-season "Allelúja" default — see
// data/hours/matins-sunday-nocturn3-overrides.yml's own header.
type SundayNocturn3Overrides = Record<string, Partial<SundayNocturn>>;
const sundayNocturn3Overrides = matinsSundayNocturn3OverridesData as unknown as SundayNocturn3Overrides;
function sundayNocturn3For(temporalId: string | undefined): SundayNocturn {
const base = sundayAntiphons.nocturn3;
const override = temporalId ? sundayNocturn3Overrides[temporalId] : undefined;
if (!override) return base;
return {
canticles: override.canticles ?? base.canticles,
antiphon: override.antiphon ?? base.antiphon,
versicle: override.versicle ?? base.versicle,
};
}
interface FerialGroup {
psalms: PsalmRef[];
antiphon: BilingualText;
@@ -691,7 +710,7 @@ export function resolveOrdo(date: string): ResolvedOrdo {
parts.push(...sundayPsalmNocturn(sundayAntiphons.nocturn2, day));
parts.push(...(nocturn2Readings ?? []));
parts.push({ kind: 'section-heading', label: `Nocturn ${NOCTURN_NUMERAL[2]}` });
parts.push(...sundayCanticleNocturn(sundayAntiphons.nocturn3, day));
parts.push(...sundayCanticleNocturn(sundayNocturn3For(temporalId), day));
parts.push(...(nocturn3Readings ?? []));
parts.push({ kind: 'te-deum', text: resolveCommon('te-deum') });
parts.push({ kind: 'versicle', text: resolveCommon('te-decet-laus') });