4 files changed, 34 insertions, 9 deletions

diff --git a/src/gui/text/qtextcursor.cpp b/src/gui/text/qtextcursor.cpp
index daa40a1..769ab2f 100644
--- a/src/gui/text/qtextcursor.cpp
+++ b/src/gui/text/qtextcursor.cpp
@@ -1283,7 +1283,7 @@ void QTextCursor::setVisualNavigation(bool b)
 /*!
   \since 4.7
 
-  Sets the visual x position for vertical cursor movements.
+  Sets the visual x position for vertical cursor movements to \a x.
 
   The vertical movement x position is cleared automatically when the cursor moves horizontally, and kept
   unchanged when the cursor moves vertically. The mechanism allows the cursor to move up and down on a
@@ -1335,8 +1335,8 @@ bool QTextCursor::keepPositionOnInsert() const
   Defines whether the cursor should keep its current position when text gets inserted at the current position of the
   cursor.
 
-  If \b is true, the cursor keeps its current position when text gets inserted at the positing of the cursor.
-  If \b is false, the cursor moves along with the inserted text.
+  If \a b is true, the cursor keeps its current position when text gets inserted at the positing of the cursor.
+  If \a b is false, the cursor moves along with the inserted text.
 
   The default is false.
 
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index d6535ea..674064e 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1935,7 +1935,7 @@ void QTextLine::layout_helper(int maxGlyphs)
             // We ignore the right bearing if the minimum negative bearing is too little to
             // expand the text beyond the edge.
             if (sb_or_ws|breakany) {
-                if (lbh.calculateNewWidth(line) + lbh.minimumRightBearing > line.width)
+                if (lbh.calculateNewWidth(line) - lbh.minimumRightBearing > line.width)
                     lbh.adjustRightBearing();
                 if (lbh.checkFullOtherwiseExtend(line)) {
                     if (!breakany) {
diff --git a/src/gui/text/qtextoption.cpp b/src/gui/text/qtextoption.cpp
index 8f31e46..9eeec0b 100644
--- a/src/gui/text/qtextoption.cpp
+++ b/src/gui/text/qtextoption.cpp
@@ -392,7 +392,12 @@ QList<QTextOption::Tab> QTextOption::tabs() const
 
 /*!
     \fn Tab::Tab(qreal pos, TabType tabType, QChar delim = QChar())
-    Creates a tab with the given position, tab type, and (for DelimiterTab) delimiter
+    
+    Creates a tab with the given position, tab type, and delimiter
+    (\a pos, \a tabType, \a delim).
+
+    \note \a delim is only used when \a tabType is DelimiterTab.
+
     \since 4.7
 */
 
diff --git a/src/gui/text/qtexttable.cpp b/src/gui/text/qtexttable.cpp
index ada18c8..c291f25 100644
--- a/src/gui/text/qtexttable.cpp
+++ b/src/gui/text/qtexttable.cpp
@@ -754,19 +754,39 @@ void QTextTable::insertColumns(int pos, int num)
     QTextFormatCollection *c = p->formatCollection();
     p->beginEditBlock();
 
+    QList<int> extendedSpans;
     for (int i = 0; i < d->nRows; ++i) {
         int cell;
         if (i == d->nRows - 1 && pos == d->nCols)
             cell = d->fragment_end;
         else
             cell = d->grid[i*d->nCols + pos];
-        QTextDocumentPrivate::FragmentIterator it(&p->fragmentMap(), cell);
-        QTextCharFormat fmt = c->charFormat(it->format);
         if (pos > 0 && pos < d->nCols && cell == d->grid[i*d->nCols + pos - 1]) {
             // cell spans the insertion place, extend it
-            fmt.setTableCellColumnSpan(fmt.tableCellColumnSpan() + num);
-            p->setCharFormat(it.position(), 1, fmt);
+            if (!extendedSpans.contains(cell)) {
+                QTextDocumentPrivate::FragmentIterator it(&p->fragmentMap(), cell);
+                QTextCharFormat fmt = c->charFormat(it->format);
+                fmt.setTableCellColumnSpan(fmt.tableCellColumnSpan() + num);
+                p->setCharFormat(it.position(), 1, fmt);
+                d->dirty = true;
+                extendedSpans << cell;
+            }
         } else {
+            /* If the next cell is spanned from the row above, we need to find the right position
+            to insert to */
+            if (i > 0 && pos < d->nCols && cell == d->grid[(i-1) * d->nCols + pos]) {
+                int gridIndex = i*d->nCols + pos;
+                const int gridEnd = d->nRows * d->nCols - 1;
+                while (gridIndex < gridEnd && cell == d->grid[gridIndex]) {
+                    ++gridIndex;
+                }
+                if (gridIndex == gridEnd)
+                    cell = d->fragment_end;
+                else
+                    cell = d->grid[gridIndex];
+            }
+            QTextDocumentPrivate::FragmentIterator it(&p->fragmentMap(), cell);
+            QTextCharFormat fmt = c->charFormat(it->format);
             fmt.setTableCellRowSpan(1);
             fmt.setTableCellColumnSpan(1);
             Q_ASSERT(fmt.objectIndex() == objectIndex());