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Which source lines and branches the tests execute. Lines 91.5 %, branches 75.0 % (minimum 85 % and 72 %). main @ 399ffe3d · 21 October 2026 · pipeline 7238.

GCC Code Coverage Report

Directory: src/
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 85.5% 142 / 0 / 166
Functions: 91.7% 11 / 0 / 12
Branches: 69.9% 323 / 0 / 462
data/TaskRecurrence.cpp
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1 #include "TaskRecurrence.h"
2 #include "ICalTodoCodec.h"
3 #include "RecurrenceExpansion.h"
4 #include "RecurrenceRule.h"
5
6 #include <QTimeZone>
7 #include <algorithm>
8
9 namespace TaskRecurrence {
10 122 bool supported(const CalendarTask &task) {
11
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 122 return task.rrule.isEmpty() || RecurrenceRule::parse(task.rrule).fullySupported();
12 }
13
14 namespace {
15 using Frequency = RecurrenceRule::Frequency;
16
17 105 bool timeFromBase(const RecurrenceRule &rule) {
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 74 return rule.frequency == Frequency::Daily || rule.frequency == Frequency::Weekly ||
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 179 rule.frequency == Frequency::Monthly || rule.frequency == Frequency::Yearly;
20 }
21
22 // The parts a rule takes implicitly from its base (weekday, month day, month,
23 // time of day) written out explicitly, so the base can move without changing
24 // the pattern (TASK-RECUR-RDATE).
25 7 RecurrenceRule pinnedToBase(RecurrenceRule rule, const QDateTime &base, const QTime &wallTime, bool allDay) {
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 7 const QDate day = base.date();
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 7 if (rule.frequency == Frequency::Weekly && rule.byDay.isEmpty()) rule.byDay = {{0, day.dayOfWeek()}};
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 7 if (rule.frequency == Frequency::Monthly && rule.byDay.isEmpty() && rule.byMonthDay.isEmpty())
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 1 rule.byMonthDay = {day.day()};
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 7 if (rule.frequency == Frequency::Yearly && rule.byMonth.isEmpty() && rule.byWeekNo.isEmpty() && rule.byYearDay.isEmpty()) {
31 ✗ rule.byMonth = {day.month()};
32 ✗ if (rule.byDay.isEmpty() && rule.byMonthDay.isEmpty()) rule.byMonthDay = {day.day()};
33 }
34
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 7 if (!allDay && timeFromBase(rule)) {
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 7 if (rule.byHour.isEmpty()) rule.byHour = {wallTime.hour()};
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 7 if (rule.byMinute.isEmpty()) rule.byMinute = {wallTime.minute()};
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 7 if (rule.bySecond.isEmpty()) rule.bySecond = {wallTime.second()};
38 }
39 14 return rule;
40 }
41
42 // The first occurrence after `anchor` up to `end`. Searched in growing
43 // windows: a rule without an end looks ten years ahead, and expanding all of
44 // them for a daily task took ~0.7 s per completion with floating times
45 // (Sprint 102 fuzzing). The first window that holds a later start holds the
46 // earliest one, because every occurrence starting by its last day is in it.
47 // S106-132: `*unknown` is set when an expansion was cut off (work cap) —
48 // then "no later occurrence" is not known and must not complete the series.
49 121 QDateTime nextAfter(const CalendarEvent &event, const QDateTime &anchor, const QDate &end, bool *unknown) {
50
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 146 for (const QDate &limit : {anchor.date().addDays(40), anchor.date().addYears(2), end}) {
51 146 const QDate to = qMin(limit, end);
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 146 QDateTime next;
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 2964 for (const auto &occurrence : expandEventsForDisplay({event}, anchor.date(), to, false)) {
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 2526 if (occurrence.partialRecurrence) *unknown = true;
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 2526 if (occurrence.dtStart > anchor && (!next.isValid() || occurrence.dtStart < next)) next = occurrence.dtStart;
56 146 }
57
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 146 if (next.isValid() || to >= end || *unknown)
58 121 return next;
59 25 }
60 ✗ return {};
61 292 }
62
63 // The last start a COUNT rule counts, if COUNT is reached by `end` (two
64 // days of display margin, as the expansion uses); invalid otherwise or when
65 // the rule cannot be expanded completely. The naive engine counts on the
66 // wall clock without zone conversions and only the last start is converted:
67 // expanding every occurrence of a long daily series for display cost about
68 // 0.4 s per completion with a floating time (Sprint 104 fuzz finding vtodo).
69 6 QDateTime lastCountedStart(const CalendarEvent &series, const RecurrenceRule &rule, const QDate &end) {
70
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 6 const QDate firstDay = series.allDay ? series.dtStart.toUTC().date() : series.dtStart.date();
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 6 const QDateTime naiveStart(firstDay, series.allDay ? QTime(0, 0) : series.dtStart.time(), QTimeZone::utc());
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 6 const QDateTime naiveEnd(end.addDays(2), QTime(23, 59, 59), QTimeZone::utc());
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 6 const NaiveExpansion naive = expandNaive(rule, naiveStart, naiveStart, naiveEnd);
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 6 if (naive.partial || naive.truncated || naive.starts.size() < rule.count) return {};
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 5 const QDate lastDay = naive.starts.last().date();
76 5 QDateTime last;
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 22 for (const auto &occurrence : expandEventsForDisplay({series}, lastDay.addDays(-2), lastDay.addDays(2), false))
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 12 if (!last.isValid() || occurrence.dtStart > last) last = occurrence.dtStart;
79 5 return last;
80 16 }
81
82 ✗ QList<QDateTime> startsAfter(const CalendarEvent &series, const QDateTime &after, const QDate &end) {
83 ✗ QList<QDateTime> starts;
84 ✗ for (const auto &occurrence : expandEventsForDisplay({series}, series.dtStart.date(), end, false))
85 ✗ if (occurrence.dtStart > after) starts << occurrence.dtStart;
86 ✗ std::sort(starts.begin(), starts.end());
87 ✗ return starts;
88 ✗ }
89
90 // Do two series start at exactly the same times after `after` (up to
91 // `end`)? Comparing both ten-year expansions for display cost ~0.3 s per
92 // completion of a daily task with a floating time (Sprint 105 fuzz finding
93 // vtodo). Two series of the same zone and kind without UNTIL are compared
94 // on the wall clock with the naive engine (the zone maps equal wall times
95 // to equal instants); otherwise the display expansion runs in growing
96 // windows and the first window with a difference answers.
97 7 bool sameStartsAfter(const CalendarEvent &moved, const CalendarEvent &original, const QDateTime &after, const QDate &end) {
98
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 7 const RecurrenceRule movedRule = RecurrenceRule::parse(moved.rrule);
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 7 const RecurrenceRule originalRule = RecurrenceRule::parse(original.rrule);
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 14 const bool sameClock = moved.allDay == original.allDay && moved.dtStart.timeSpec() == original.dtStart.timeSpec() &&
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 21 moved.dtStart.timeZone() == original.dtStart.timeZone() && after.timeZone() == moved.dtStart.timeZone();
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 7 if (sameClock && movedRule.until.isEmpty() && originalRule.until.isEmpty() && !moved.allDay) {
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 21 const auto wall = [](const QDateTime &time) { return QDateTime(time.date(), time.time(), QTimeZone::utc()); };
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 7 const QDateTime from = wall(after);
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 7 const QDateTime to(end.addDays(2), QTime(23, 59, 59), QTimeZone::utc());
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 7 const NaiveExpansion a = expandNaive(movedRule, wall(moved.dtStart), from, to);
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 7 const NaiveExpansion b = expandNaive(originalRule, wall(original.dtStart), from, to);
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 7 if (!a.partial && !a.truncated && !b.partial && !b.truncated) {
109 14 const auto later = [&from](QList<QDateTime> starts) {
110 18535 starts.removeIf([&from](const QDateTime &start) { return start <= from; });
111 14 return starts;
112 7 };
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 7 return later(a.starts) == later(b.starts);
114 }
115 28 }
116 ✗ for (const QDate &limit : {after.date().addDays(40), after.date().addYears(2), end}) {
117 ✗ const QDate to = qMin(limit, end);
118 ✗ if (startsAfter(moved, after, to) != startsAfter(original, after, to)) return false;
119 ✗ if (to >= end) return true;
120 }
121 ✗ return true;
122 7 }
123 } // namespace
124
125 122 bool complete(CalendarTask *task, const QDateTime &now) {
126
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 122 if (!task || task->rrule.isEmpty() || !supported(*task)) return false;
127
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 121 const QDateTime anchor = task->dtStart.isValid() ? task->dtStart : task->due;
128
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 121 if (!anchor.isValid()) return false;
129 121 CalendarEvent event;
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 121 event.uid = task->uid; event.dtStart = anchor; event.dtEnd = anchor.addSecs(60);
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 121 event.allDay = task->dtStart.isValid() ? task->startAllDay : task->dueAllDay;
132 121 event.rrule = task->rrule;
133
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 121 const auto calendar = ICal::parseFirst(task->resourceIcal);
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 121 const ICalTime::ZoneResolver resolver(calendar);
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 121 const auto original = ICal::parseFirst(task->icalRaw, QStringLiteral("VTODO"));
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 132 for (const auto &property : original.propertiesNamed("EXDATE"))
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 143 for (const auto &value : ICalTime::parseList(property, resolver)) event.exdates << value.dateTime;
138
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 137 for (const auto &property : original.propertiesNamed("RDATE"))
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 153 for (const auto &value : ICalTime::parseList(property, resolver)) event.rdates << value.dateTime;
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 121 auto rule = RecurrenceRule::parse(task->rrule);
141 // COUNT needs the final original occurrence, not a fresh count after every advance.
142
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 121 const QDate end = anchor.date().addYears(rule.count > 0 ? 100 : 10);
143 121 bool unknown = false;
144
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 121 QDateTime next = nextAfter(event, anchor, end, &unknown);
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 121 if (!next.isValid() && unknown) return false; // not "series over" (S106-132)
146
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 120 if (!next.isValid()) {
147 5 task->status = QStringLiteral("COMPLETED"); task->percentComplete = 100; task->completedAt = now;
148 5 return true;
149 }
150 // The rule alone (no RDATE/EXDATE): COUNT counts rule occurrences before
151 // EXDATE removes any (RFC 5545 §3.3.10).
152 115 CalendarEvent ruleOnly = event;
153
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 115 ruleOnly.exdates.clear();
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 115 ruleOnly.rdates.clear();
155 // "Is `next` a rule occurrence?" — the rule's occurrences up to `next`
156 // answer it (two days of margin for the display date of another zone).
157
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 115 const QDate ruleEnd = qMin(end, next.date().addDays(2));
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 345 const auto ruleOccurrences = expandEventsForDisplay({ruleOnly}, anchor.date(), ruleEnd, false);
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 115 if (rule.count > 0) {
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 6 const QDateTime last = lastCountedStart(ruleOnly, rule, end);
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 6 if (!last.isValid()) return false;
162 5 rule.count = 0;
163
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 5 rule.until = ICalTime::formatValue(event.allDay ? last : last.toUTC(), event.allDay);
164
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 5 task->rrule = rule.toString();
165 5 ruleOnly.rrule = task->rrule;
166 6 }
167 // The wall-clock time the series means; it differs from the base's time
168 // only after a DST gap normalised it (TASK-RECUR-DST-GAP).
169 // S106-147: a malformed value (another client edited it) is ignored, not
170 // compared as an invalid time that wipes the task's dates.
171 const QTime storedWallTime =
172
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 228 QTime::fromString(original.value(QStringLiteral("X-MAILJD-WALL-TIME")), QStringLiteral("HHmmss"));
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 114 const QTime wallTime = storedWallTime.isValid() ? storedWallTime : anchor.time();
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 114 const bool nextFromRule = std::any_of(ruleOccurrences.begin(), ruleOccurrences.end(),
175 228 [&next](const CalendarEvent &occurrence) { return occurrence.dtStart == next; });
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 114 if (!nextFromRule) {
177 // TASK-RECUR-RDATE: the next occurrence only exists through an RDATE.
178 // Moving the base onto it would change the implicit pattern, so the rule
179 // is rewritten with the old base's parts made explicit — and only kept
180 // when it yields exactly the old rule's later occurrences.
181
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 7 const RecurrenceRule pinned = pinnedToBase(rule, anchor, wallTime, event.allDay);
182 7 CalendarEvent moved = ruleOnly;
183 7 moved.dtStart = next;
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 7 moved.dtEnd = next.addSecs(60);
185
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 7 moved.rrule = pinned.toString();
186
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 7 if (!sameStartsAfter(moved, ruleOnly, next, end)) return false;
187 6 task->rrule = moved.rrule;
188 8 }
189 // A wall-clock time inside a DST gap is stored as the real time (03:30 for
190 // 02:30); the intended time is kept beside it and used again afterwards.
191 113 QString nextWallTime;
192 // Only a rule that takes its whole time of day from the base can be in a
193 // gap: with BYMINUTE/BYSECOND the grid time differs legitimately (S106-146).
194
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 194 if (nextFromRule && !event.allDay && timeFromBase(rule) && rule.byHour.isEmpty() &&
195
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 307 rule.byMinute.isEmpty() && rule.bySecond.isEmpty() && next.time() != wallTime) {
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 4 const QDateTime intended(next.date(), wallTime, next.timeZone());
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 4 if (intended.time() == wallTime) next = intended;
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 2 else nextWallTime = wallTime.toString(QStringLiteral("HHmmss"));
199 4 }
200
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 113 if (!next.isValid()) return false; // never overwrite the dates with an invalid time
201 113 auto resource = calendar;
202 113 bool instances = false;
203
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 221 for (const auto &component : resource.componentsNamed("VTODO"))
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 221 instances |= component.value("UID") == task->uid && component.hasProperty("RECURRENCE-ID");
205
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 113 if (instances) {
206 ✗ auto instance = original;
207 ✗ ICal::Property recurrence; recurrence.name = QStringLiteral("RECURRENCE-ID");
208 ✗ ICalTime::writeProperty(&recurrence, anchor, event.allDay, ICalTime::zoneId(anchor, event.allDay));
209 ✗ instance.setProperty(recurrence); instance.removeProperties("RRULE");
210 ✗ instance.setPropertyValue("STATUS", "COMPLETED"); instance.setPropertyValue("PERCENT-COMPLETE", "100");
211 ✗ instance.setPropertyValue("COMPLETED", ICalTime::formatValue(now.toUTC(), false));
212 ✗ resource.components << instance;
213 ✗ task->resourceIcal = ICal::serialize(resource);
214 ✗ }
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 113 const qint64 delta = anchor.secsTo(next);
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 113 if (task->due.isValid()) {
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 113 const qint64 span = anchor.secsTo(task->due);
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 113 task->due = task->dueAllDay ? task->due.addDays(anchor.date().daysTo(next.date())) : next.addSecs(span);
219 }
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 113 if (task->dtStart.isValid()) task->dtStart = next;
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 113 for (auto &alarm : task->alarmTimes) alarm = alarm.addSecs(delta);
222 113 task->status = QStringLiteral("NEEDS-ACTION"); task->percentComplete = 0; task->completedAt = {};
223 113 auto raw = original;
224
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 113 raw.setPropertyValue("X-MAILJD-LAST-COMPLETED", ICalTime::formatValue(now.toUTC(), false));
225
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 224 if (nextWallTime.isEmpty()) raw.removeProperties(QStringLiteral("X-MAILJD-WALL-TIME"));
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 2 else raw.setPropertyValue(QStringLiteral("X-MAILJD-WALL-TIME"), nextWallTime);
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 113 if (!nextFromRule) {
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 6 raw.removeProperties(QStringLiteral("RRULE"));
229 6 ICal::Property rrule;
230 6 rrule.name = QStringLiteral("RRULE");
231 6 rrule.value = task->rrule;
232
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 6 raw.appendProperty(rrule);
233 6 }
234
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 113 task->icalRaw = ICal::serialize(raw);
235 113 return true;
236 351 }
237 }
238