Origin: upstream, commit:754ddfd30733a426e0132f833e8a508fa26ab08d
Author: Dmitri Ovodok <dmitrio95@yandex.ru>
Description: fix #291698: ensure consistent state of two-notes tremolo after file reading

--- a/libmscore/layout.cpp
+++ b/libmscore/layout.cpp
@@ -2550,52 +2550,6 @@ void layoutDrumsetChord(Chord* c, const
       }
 
 //---------------------------------------------------------
-//   connectTremolo
-//    Connect two-notes tremolo and update duration types
-//    for the involved chords.
-//---------------------------------------------------------
-
-static void connectTremolo(Measure* m)
-      {
-      const int ntracks = m->score()->ntracks();
-      constexpr SegmentType st = SegmentType::ChordRest;
-      for (Segment* s = m->first(st); s; s = s->next(st)) {
-            for (int i = 0; i < ntracks; ++i) {
-                  Element* e = s->element(i);
-                  if (!e || !e->isChord())
-                        continue;
-
-                  Chord* c = toChord(e);
-                  Tremolo* tremolo = c->tremolo();
-                  if (tremolo && tremolo->twoNotes()) {
-                        // Ensure correct duration type for chord
-                        c->setDurationType(tremolo->durationType());
-
-                        // If it is the first tremolo's chord, find the second
-                        // chord for tremolo, if needed.
-                        if (!tremolo->chord1())
-                              tremolo->setChords(c, tremolo->chord2());
-                        else if (tremolo->chord1() != c || tremolo->chord2())
-                              continue;
-
-                        for (Segment* ls = s->next(st); ls; ls = ls->next(st)) {
-                              if (Element* element = ls->element(i)) {
-                                    if (!element->isChord()) {
-                                          qDebug("cannot connect tremolo");
-                                          continue;
-                                          }
-                                    Chord* nc = toChord(element);
-                                    tremolo->setChords(c, nc);
-                                    nc->setTremolo(tremolo);
-                                    break;
-                                    }
-                              }
-                        }
-                  }
-            }
-      }
-
-//---------------------------------------------------------
 //   getNextMeasure
 //---------------------------------------------------------
 
@@ -2670,7 +2624,7 @@ void Score::getNextMeasure(LayoutContext
             return;
             }
 
-      connectTremolo(measure);
+      measure->connectTremolo();
 
       //
       // calculate accidentals and note lines,
--- a/libmscore/measure.cpp
+++ b/libmscore/measure.cpp
@@ -2054,6 +2054,8 @@ void Measure::read(XmlReader& e, int sta
             e.setTick(lm->tick() + lm->ticks());
             }
       e.setCurrentMeasure(nullptr);
+
+      connectTremolo();
       }
 
 //---------------------------------------------------------
@@ -2523,6 +2525,52 @@ void Measure::scanElements(void* data, v
             }
       }
 
+//---------------------------------------------------------
+//   connectTremolo
+///   Connect two-notes tremolo and update duration types
+///   for the involved chords.
+//---------------------------------------------------------
+
+void Measure::connectTremolo()
+      {
+      const int ntracks = score()->ntracks();
+      constexpr SegmentType st = SegmentType::ChordRest;
+      for (Segment* s = first(st); s; s = s->next(st)) {
+            for (int i = 0; i < ntracks; ++i) {
+                  Element* e = s->element(i);
+                  if (!e || !e->isChord())
+                        continue;
+
+                  Chord* c = toChord(e);
+                  Tremolo* tremolo = c->tremolo();
+                  if (tremolo && tremolo->twoNotes()) {
+                        // Ensure correct duration type for chord
+                        c->setDurationType(tremolo->durationType());
+
+                        // If it is the first tremolo's chord, find the second
+                        // chord for tremolo, if needed.
+                        if (!tremolo->chord1())
+                              tremolo->setChords(c, tremolo->chord2());
+                        else if (tremolo->chord1() != c || tremolo->chord2())
+                              continue;
+
+                        for (Segment* ls = s->next(st); ls; ls = ls->next(st)) {
+                              if (Element* element = ls->element(i)) {
+                                    if (!element->isChord()) {
+                                          qDebug("cannot connect tremolo");
+                                          continue;
+                                          }
+                                    Chord* nc = toChord(element);
+                                    tremolo->setChords(c, nc);
+                                    nc->setTremolo(tremolo);
+                                    break;
+                                    }
+                              }
+                        }
+                  }
+            }
+      }
+
 //---------------------------------------------------------
 //   createVoice
 //    Create a voice on demand by filling the measure
--- a/libmscore/measure.h
+++ b/libmscore/measure.h
@@ -194,6 +194,7 @@ class Measure final : public MeasureBase
       Segment* undoGetSegment(SegmentType st, const Fraction& f)       { return undoGetSegmentR(st, f - tick()); }
       Segment* getSegment(SegmentType st,     const Fraction& f)       { return getSegmentR(st, f - tick()); }
 
+      void connectTremolo();
 
       qreal createEndBarLines(bool);
       void barLinesSetSpan(Segment*);
--- a/libmscore/read114.cpp
+++ b/libmscore/read114.cpp
@@ -2171,6 +2171,7 @@ static void readMeasure(Measure* m, int
                   }
             }
       e.checkTuplets();
+      m->connectTremolo();
       }
 
 //---------------------------------------------------------
--- a/libmscore/read206.cpp
+++ b/libmscore/read206.cpp
@@ -3360,6 +3360,7 @@ static void readMeasure(Measure* m, int
                   e.unknown();
             }
       e.checkTuplets();
+      m->connectTremolo();
       }
 
 //---------------------------------------------------------