resolved fdo#72293 correctly split grouped formulas and regroup

Grouped formulas need to be split at both edges of the deleted area,
regroup _after_ rows have been deleted.

Change-Id: I840806f30cef592e17b4cd3a33c81fd2a8309055

sc/source/core/data/column.cxx

@@ -2444,7 +2444,16 @@ bool ScColumn::UpdateReference( sc::RefUpdateContext& rCxt, ScDocument* pUndoDoc
     {
         // Cells in this column is being shifted.  Split formula grouping at
         // the top and bottom boundaries before they get shifted.
-        SCROW nSplitPos = rCxt.maRange.aStart.Row();
+        // Also, for deleted rows split at the top of the deleted area to adapt
+        // the affected group length.
+        SCROW nSplitPos;
+        if (rCxt.mnRowDelta < 0)
+        {
+            nSplitPos = rCxt.maRange.aStart.Row() + rCxt.mnRowDelta;
+            if (ValidRow(nSplitPos))
+                aBounds.push_back(nSplitPos);
+        }
+        nSplitPos = rCxt.maRange.aStart.Row();
         if (ValidRow(nSplitPos))
         {
             aBounds.push_back(nSplitPos);

sc/source/core/data/table2.cxx

@@ -239,16 +239,16 @@ void ScTable::DeleteRow(
         }
     }
 
-    std::vector<SCCOL> aRegroupCols;
-    rRegroupCols.getColumns(nTab, aRegroupCols);
-    std::for_each(aRegroupCols.begin(), aRegroupCols.end(), ColumnRegroupFormulaCells(aCol));
-
     {   // scope for bulk broadcast
         ScBulkBroadcast aBulkBroadcast( pDocument->GetBASM());
         for (SCCOL j=nStartCol; j<=nEndCol; j++)
             aCol[j].DeleteRow( nStartRow, nSize );
     }
 
+    std::vector<SCCOL> aRegroupCols;
+    rRegroupCols.getColumns(nTab, aRegroupCols);
+    std::for_each(aRegroupCols.begin(), aRegroupCols.end(), ColumnRegroupFormulaCells(aCol));
+
     InvalidatePageBreaks();
 
     if (IsStreamValid())