File indexing completed on 2024-04-14 05:35:48

 // clang-format off
 /*
  * KDiff3 - Text Diff And Merge Tool
  *
  * SPDX-FileCopyrightText: 2002-2011 Joachim Eibl, joachim.eibl at gmx.de
  * SPDX-FileCopyrightText: 2018-2020 Michael Reeves reeves.87@gmail.com
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 // clang-format on
 
 #include "mergeresultwindow.h"
 
 #include "compat.h"
 #include "defmac.h"
 #include "EncodedDataStream.h"
 #include "guiutils.h"
 #include "kdiff3.h"
 #include "options.h"
 #include "RLPainter.h"
 #include "TypeUtils.h"
 #include "UndoRecord.h"
 #include "Utils.h"
 
 #include <memory>
 
 #include <QAction>
 #include <QApplication>
 #include <QClipboard>
 #include <QComboBox>
 #include <QCursor>
 #include <QDir>
 #include <QDropEvent>
 #include <QEvent>
 #include <QFile>
 #include <QFocusEvent>
 #include <QHBoxLayout>
 #include <QInputEvent>
 #include <QKeyEvent>
 #include <QLabel>
 #include <QLineEdit>
 #include <QtMath>
 #include <QMouseEvent>
 #include <QPaintEvent>
 #include <QPainter>
 #include <QPixmap>
 #include <QPointer>
 #include <QRegularExpression>
 #include <QResizeEvent>
 #include <QStatusBar>
 #include <QTextCodec>
 #include <QTextLayout>
 #include <QTextStream>
 #include <QTimerEvent>
 #include <QUrl>
 #include <QWheelEvent>
 
 #include <KActionCollection>
 #include <KLocalizedString>
 #include <KMessageBox>
 #include <KToggleAction>
 
 QPointer<QScrollBar> MergeResultWindow::mVScrollBar = nullptr;
 QPointer<QAction> MergeResultWindow::chooseAEverywhere;
 QPointer<QAction> MergeResultWindow::chooseBEverywhere;
 QPointer<QAction> MergeResultWindow::chooseCEverywhere;
 QPointer<QAction> MergeResultWindow::chooseAForUnsolvedConflicts;
 QPointer<QAction> MergeResultWindow::chooseBForUnsolvedConflicts;
 QPointer<QAction> MergeResultWindow::chooseCForUnsolvedConflicts;
 QPointer<QAction> MergeResultWindow::chooseAForUnsolvedWhiteSpaceConflicts;
 QPointer<QAction> MergeResultWindow::chooseBForUnsolvedWhiteSpaceConflicts;
 QPointer<QAction> MergeResultWindow::chooseCForUnsolvedWhiteSpaceConflicts;
 
 MergeResultWindow::MergeResultWindow(
     QWidget* pParent,
     QStatusBar* pStatusBar):
     QWidget(pParent)
 {
     setObjectName("MergeResultWindow");
     setFocusPolicy(Qt::ClickFocus);
 
     mOverviewMode = e_OverviewMode::eOMNormal;
 
     m_pStatusBar = pStatusBar;
     if(m_pStatusBar != nullptr)
         chk_connect_a(m_pStatusBar, &QStatusBar::messageChanged, this, &MergeResultWindow::slotStatusMessageChanged);
 
     setUpdatesEnabled(false);
 
     chk_connect_a(&m_cursorTimer, &QTimer::timeout, this, &MergeResultWindow::slotCursorUpdate);
     m_cursorTimer.setSingleShot(true);
     m_cursorTimer.start(500 /*ms*/);
     m_selection.reset();
 
     setMinimumSize(QSize(20, 20));
     setFont(gOptions->defaultFont());
 }
 
 void MergeResultWindow::init(
     const std::shared_ptr<LineDataVector> &pLineDataA, LineRef sizeA,
     const std::shared_ptr<LineDataVector> &pLineDataB, LineRef sizeB,
     const std::shared_ptr<LineDataVector> &pLineDataC, LineRef sizeC,
     const Diff3LineList* pDiff3LineList,
     TotalDiffStatus* pTotalDiffStatus,
     bool bAutoSolve)
 {
     m_firstLine = 0;
     m_horizScrollOffset = 0;
     m_nofLines = 0;
     m_bMyUpdate = false;
     m_bInsertMode = true;
     m_scrollDeltaX = 0;
     m_scrollDeltaY = 0;
     setModified(false);
 
     m_pldA = pLineDataA;
     m_pldB = pLineDataB;
     m_pldC = pLineDataC;
     m_sizeA = sizeA;
     m_sizeB = sizeB;
     m_sizeC = sizeC;
 
     m_pDiff3LineList = pDiff3LineList;
     m_pTotalDiffStatus = pTotalDiffStatus;
 
     m_selection.reset();
     m_cursorXPos = 0;
     m_cursorOldXPixelPos = 0;
     m_cursorYPos = 0;
 
     m_maxTextWidth = -1;
 
     merge(bAutoSolve, e_SrcSelector::Invalid);
     update();
     updateSourceMask();
 
     showUnsolvedConflictsStatusMessage();
 }
 
 //This must be called before KXMLGui::SetXMLFile and friends or the actions will not be shown in the menu.
 //At that point in startup we don't have a MergeResultWindow object so we cannot connect the signals yet.
 void MergeResultWindow::initActions(KActionCollection* ac)
 {
     assert(ac != nullptr);
 
     chooseAEverywhere = GuiUtils::createAction<QAction>(i18n("Choose A Everywhere"), QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_1), ac, "merge_choose_a_everywhere");
     chooseBEverywhere = GuiUtils::createAction<QAction>(i18n("Choose B Everywhere"), QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_2), ac, "merge_choose_b_everywhere");
     chooseCEverywhere = GuiUtils::createAction<QAction>(i18n("Choose C Everywhere"), QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_3), ac, "merge_choose_c_everywhere");
     chooseAForUnsolvedConflicts = GuiUtils::createAction<QAction>(i18n("Choose A for All Unsolved Conflicts"), ac, "merge_choose_a_for_unsolved_conflicts");
     chooseBForUnsolvedConflicts = GuiUtils::createAction<QAction>(i18n("Choose B for All Unsolved Conflicts"), ac, "merge_choose_b_for_unsolved_conflicts");
     chooseCForUnsolvedConflicts = GuiUtils::createAction<QAction>(i18n("Choose C for All Unsolved Conflicts"), ac, "merge_choose_c_for_unsolved_conflicts");
     chooseAForUnsolvedWhiteSpaceConflicts = GuiUtils::createAction<QAction>(i18n("Choose A for All Unsolved Whitespace Conflicts"), ac, "merge_choose_a_for_unsolved_whitespace_conflicts");
     chooseBForUnsolvedWhiteSpaceConflicts = GuiUtils::createAction<QAction>(i18n("Choose B for All Unsolved Whitespace Conflicts"), ac, "merge_choose_b_for_unsolved_whitespace_conflicts");
     chooseCForUnsolvedWhiteSpaceConflicts = GuiUtils::createAction<QAction>(i18n("Choose C for All Unsolved Whitespace Conflicts"), ac, "merge_choose_c_for_unsolved_whitespace_conflicts");
 }
 
 void MergeResultWindow::connectActions() const
 {
     static bool setupComplete = false;
     if(setupComplete) return;
 
     setupComplete = true;
     chk_connect_a(chooseAEverywhere, &QAction::triggered, this, &MergeResultWindow::slotChooseAEverywhere);
     chk_connect_a(chooseBEverywhere, &QAction::triggered, this, &MergeResultWindow::slotChooseBEverywhere);
     chk_connect_a(chooseCEverywhere, &QAction::triggered, this, &MergeResultWindow::slotChooseCEverywhere);
 
     chk_connect_a(chooseAForUnsolvedConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseAForUnsolvedConflicts);
     chk_connect_a(chooseBForUnsolvedConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseBForUnsolvedConflicts);
     chk_connect_a(chooseCForUnsolvedConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseCForUnsolvedConflicts);
 
     chk_connect_a(chooseAForUnsolvedWhiteSpaceConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseAForUnsolvedWhiteSpaceConflicts);
     chk_connect_a(chooseBForUnsolvedWhiteSpaceConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseBForUnsolvedWhiteSpaceConflicts);
     chk_connect_a(chooseCForUnsolvedWhiteSpaceConflicts, &QAction::triggered, this, &MergeResultWindow::slotChooseCForUnsolvedWhiteSpaceConflicts);
 }
 
 void MergeResultWindow::setupConnections(const KDiff3App* app)
 {
     chk_connect_a(app, &KDiff3App::cut, this, &MergeResultWindow::slotCut);
     chk_connect_a(app, &KDiff3App::copy, this, &MergeResultWindow::slotCopy);
     chk_connect_a(app, &KDiff3App::selectAll, this, &MergeResultWindow::slotSelectAll);
 
     chk_connect_a(this, &MergeResultWindow::scrollMergeResultWindow, app, &KDiff3App::scrollMergeResultWindow);
     chk_connect_a(this, &MergeResultWindow::sourceMask, app, &KDiff3App::sourceMask);
     chk_connect_a(this, &MergeResultWindow::resizeSignal, app, &KDiff3App::setHScrollBarRange);
     chk_connect_a(this, &MergeResultWindow::resizeSignal, this, &MergeResultWindow::slotResize);
 
     chk_connect_a(this, &MergeResultWindow::selectionEnd, app, &KDiff3App::slotSelectionEnd);
     chk_connect_a(this, &MergeResultWindow::newSelection, app, &KDiff3App::slotSelectionStart);
     chk_connect_a(this, &MergeResultWindow::modifiedChanged, app, &KDiff3App::slotOutputModified);
     //TODO: Why two slots?
     chk_connect_a(this, &MergeResultWindow::updateAvailabilities, app, &KDiff3App::slotUpdateAvailabilities);
     chk_connect_a(this, &MergeResultWindow::updateAvailabilities, this, &MergeResultWindow::slotUpdateAvailabilities);
     chk_connect_a(app, &KDiff3App::updateAvailabilities, this, &MergeResultWindow::slotUpdateAvailabilities);
     chk_connect_a(this, &MergeResultWindow::showPopupMenu, app, &KDiff3App::showPopupMenu);
     chk_connect_a(this, &MergeResultWindow::noRelevantChangesDetected, app, &KDiff3App::slotNoRelevantChangesDetected);
     chk_connect_a(this, &MergeResultWindow::statusBarMessage, app, &KDiff3App::slotStatusMsg);
     //connect menu actions
     chk_connect_a(app, &KDiff3App::showWhiteSpaceToggled, this, static_cast<void (MergeResultWindow::*)(void)>(&MergeResultWindow::update));
     chk_connect_a(app, &KDiff3App::doRefresh, this, &MergeResultWindow::slotRefresh);
 
     chk_connect_a(app, &KDiff3App::autoSolve, this, &MergeResultWindow::slotAutoSolve);
     chk_connect_a(app, &KDiff3App::unsolve, this, &MergeResultWindow::slotUnsolve);
     chk_connect_a(app, &KDiff3App::mergeHistory, this, &MergeResultWindow::slotMergeHistory);
     chk_connect_a(app, &KDiff3App::regExpAutoMerge, this, &MergeResultWindow::slotRegExpAutoMerge);
 
     chk_connect_a(app, &KDiff3App::goCurrent, this, &MergeResultWindow::slotGoCurrent);
     chk_connect_a(app, &KDiff3App::goTop, this, &MergeResultWindow::slotGoTop);
     chk_connect_a(app, &KDiff3App::goBottom, this, &MergeResultWindow::slotGoBottom);
     chk_connect_a(app, &KDiff3App::goPrevUnsolvedConflict, this, &MergeResultWindow::slotGoPrevUnsolvedConflict);
     chk_connect_a(app, &KDiff3App::goNextUnsolvedConflict, this, &MergeResultWindow::slotGoNextUnsolvedConflict);
     chk_connect_a(app, &KDiff3App::goPrevConflict, this, &MergeResultWindow::slotGoPrevConflict);
     chk_connect_a(app, &KDiff3App::goNextConflict, this, &MergeResultWindow::slotGoNextConflict);
     chk_connect_a(app, &KDiff3App::goPrevDelta, this, &MergeResultWindow::slotGoPrevDelta);
     chk_connect_a(app, &KDiff3App::goNextDelta, this, &MergeResultWindow::slotGoNextDelta);
 
     chk_connect_a(app, &KDiff3App::changeOverViewMode, this, &MergeResultWindow::setOverviewMode);
 
     connections.push_back(KDiff3App::allowCut.connect(boost::bind(&MergeResultWindow::canCut, this)));
     connections.push_back(KDiff3App::allowCopy.connect(boost::bind(&MergeResultWindow::canCopy, this)));
     connections.push_back(KDiff3App::getSelection.connect(boost::bind(&MergeResultWindow::getSelection, this)));
 }
 
 void MergeResultWindow::slotResize()
 {
     mVScrollBar->setRange(0, std::max(0, getNofLines() - getNofVisibleLines()));
     mVScrollBar->setPageStep(getNofVisibleLines());
 }
 
 void MergeResultWindow::slotCut()
 {
     const QString curSelection = getSelection();
     assert(!curSelection.isEmpty() && hasFocus());
     deleteSelection();
     update();
 
     QApplication::clipboard()->setText(curSelection, QClipboard::Clipboard);
 }
 
 void MergeResultWindow::slotCopy()
 {
     if(!hasFocus())
         return;
 
     const QString curSelection = getSelection();
 
     if(!curSelection.isEmpty())
     {
         QApplication::clipboard()->setText(curSelection, QClipboard::Clipboard);
     }
 }
 
 void MergeResultWindow::slotSelectAll()
 {
     if(hasFocus())
     {
         setSelection(0, 0, getNofLines(), 0);
     }
 }
 
 void MergeResultWindow::showUnsolvedConflictsStatusMessage()
 {
     if(m_pStatusBar != nullptr)
     {
         qint32 wsc;
         qint32 nofUnsolved = getNumberOfUnsolvedConflicts(&wsc);
 
         m_persistentStatusMessage = i18n("Number of remaining unsolved conflicts: %1 (of which %2 are whitespace)", nofUnsolved, wsc);
 
         Q_EMIT statusBarMessage(m_persistentStatusMessage);
     }
 }
 
 void MergeResultWindow::slotRefresh()
 {
     setFont(gOptions->defaultFont());
     update();
 }
 
 void MergeResultWindow::slotUpdateAvailabilities()
 {
     const QWidget* frame = qobject_cast<QWidget*>(parent());
     assert(frame != nullptr);
     const bool bMergeEditorVisible = frame->isVisible();
     const bool bTripleDiff = KDiff3App::isTripleDiff();
 
     chooseAEverywhere->setEnabled(bMergeEditorVisible);
     chooseBEverywhere->setEnabled(bMergeEditorVisible);
     chooseCEverywhere->setEnabled(bMergeEditorVisible && bTripleDiff);
     chooseAForUnsolvedConflicts->setEnabled(bMergeEditorVisible);
     chooseBForUnsolvedConflicts->setEnabled(bMergeEditorVisible);
     chooseCForUnsolvedConflicts->setEnabled(bMergeEditorVisible && bTripleDiff);
     chooseAForUnsolvedWhiteSpaceConflicts->setEnabled(bMergeEditorVisible);
     chooseBForUnsolvedWhiteSpaceConflicts->setEnabled(bMergeEditorVisible);
     chooseCForUnsolvedWhiteSpaceConflicts->setEnabled(bMergeEditorVisible && bTripleDiff);
 }
 
 void MergeResultWindow::slotStatusMessageChanged(const QString& s)
 {
     if(s.isEmpty() && !m_persistentStatusMessage.isEmpty())
     {
         Q_EMIT statusBarMessage(m_persistentStatusMessage);
     }
 }
 
 void MergeResultWindow::reset()
 {
     mUndoRec.reset();
     m_mergeBlockList.clear();
 
     m_currentMergeBlockIt = m_mergeBlockList.end();
     m_pDiff3LineList = nullptr;
     m_pTotalDiffStatus = nullptr;
     m_pldA = nullptr;
     m_pldB = nullptr;
     m_pldC = nullptr;
     if(!m_persistentStatusMessage.isEmpty())
     {
         m_persistentStatusMessage = QString();
     }
 }
 
 void MergeResultWindow::merge(bool bAutoSolve, e_SrcSelector defaultSelector, bool bConflictsOnly, bool bWhiteSpaceOnly)
 {
     const bool lIsThreeWay = m_pldC != nullptr;
 
     if(!bConflictsOnly)
     {
         if(m_bModified)
         {
             KMessageBox::ButtonCode result = Compat::warningTwoActions(this,
                                                                        i18n("The output has been modified.\n"
                                                                             "If you continue your changes will be lost."),
                                                                        i18nc("Error dialog title", "Warning"),
                                                                        KStandardGuiItem::cont(),
                                                                        KStandardGuiItem::cancel());
             if(result == Compat::SecondaryAction)
                 return;
         }
 
         mUndoRec.reset();
         m_mergeBlockList.clear();
         m_currentMergeBlockIt = m_mergeBlockList.end();
 
         m_mergeBlockList.buildFromDiff3(*m_pDiff3LineList, lIsThreeWay);
     }
 
     bool bSolveWhiteSpaceConflicts = false;
     if(bAutoSolve) // when true, then the other params are not used and we can change them here. (see all invocations of merge())
     {
         if(!lIsThreeWay && gOptions->m_whiteSpace2FileMergeDefault != (qint32)e_SrcSelector::None) // Only two inputs
         {
             assert(gOptions->m_whiteSpace2FileMergeDefault <= (qint32)e_SrcSelector::Max && gOptions->m_whiteSpace2FileMergeDefault >= (qint32)e_SrcSelector::Min);
             defaultSelector = (e_SrcSelector)gOptions->m_whiteSpace2FileMergeDefault;
             bWhiteSpaceOnly = true;
             bSolveWhiteSpaceConflicts = true;
         }
         else if(lIsThreeWay && gOptions->m_whiteSpace3FileMergeDefault != (qint32)e_SrcSelector::None)
         {
             assert(gOptions->m_whiteSpace3FileMergeDefault <= (qint32)e_SrcSelector::Max && gOptions->m_whiteSpace2FileMergeDefault >= (qint32)e_SrcSelector::Min);
             defaultSelector = (e_SrcSelector)gOptions->m_whiteSpace3FileMergeDefault;
             bWhiteSpaceOnly = true;
             bSolveWhiteSpaceConflicts = true;
         }
     }
 
     if(!bAutoSolve || bSolveWhiteSpaceConflicts)
     {
         m_mergeBlockList.updateDefaults(defaultSelector, bConflictsOnly, bWhiteSpaceOnly);
     }
 
     for(MergeBlock& mb: m_mergeBlockList)
     {
         // Remove all lines that are empty, because no src lines are there.
         mb.removeEmptySource();
     }
 
     if(bAutoSolve && !bConflictsOnly)
     {
         if(gOptions->m_bRunHistoryAutoMergeOnMergeStart)
             slotMergeHistory();
         if(gOptions->m_bRunRegExpAutoMergeOnMergeStart)
             slotRegExpAutoMerge();
         if(m_pldC != nullptr && !doRelevantChangesExist())
             Q_EMIT noRelevantChangesDetected();
     }
 
     qint32 nrOfSolvedConflicts = 0;
     qint32 nrOfUnsolvedConflicts = 0;
     qint32 nrOfWhiteSpaceConflicts = 0;
 
     for(const MergeBlock& mb: m_mergeBlockList)
     {
         if(mb.isConflict())
             ++nrOfUnsolvedConflicts;
         else if(mb.isDelta())
             ++nrOfSolvedConflicts;
 
         if(mb.isWhiteSpaceConflict())
             ++nrOfWhiteSpaceConflicts;
     }
 
     m_pTotalDiffStatus->setUnsolvedConflicts(nrOfUnsolvedConflicts);
     m_pTotalDiffStatus->setSolvedConflicts(nrOfSolvedConflicts);
     m_pTotalDiffStatus->setWhitespaceConflicts(nrOfWhiteSpaceConflicts);
 
     m_cursorXPos = 0;
     m_cursorOldXPixelPos = 0;
     m_cursorYPos = 0;
     m_maxTextWidth = -1;
 
     //m_firstLine = 0; // Must not set line/column without scrolling there
     //m_horizScrollOffset = 0;
 
     setModified(false);
 
     m_currentMergeBlockIt = m_mergeBlockList.begin();
     slotGoTop();
 
     Q_EMIT updateAvailabilities();
     update();
 }
 
 void MergeResultWindow::setFirstLine(LineRef firstLine) //connected to qt controled signal
 {
     m_firstLine = std::max<LineRef>(0, firstLine);
     update();
 }
 
 void MergeResultWindow::setHorizScrollOffset(const qint32 horizScrollOffset)
 {
     m_horizScrollOffset = std::max(0, horizScrollOffset);
     update();
 }
 
 qint32 MergeResultWindow::getMaxTextWidth()
 {
     if(m_maxTextWidth < 0)
     {
         m_maxTextWidth = 0;
 
         for(const MergeBlock& mb: m_mergeBlockList)
         {
             for(const MergeEditLine& mel: mb.list())
             {
                 const QString s = mel.getString(m_pldA, m_pldB, m_pldC);
 
                 QTextLayout textLayout(s, font(), this);
                 textLayout.beginLayout();
                 textLayout.createLine();
                 textLayout.endLayout();
                 if(m_maxTextWidth < textLayout.maximumWidth())
                 {
                     m_maxTextWidth = qCeil(textLayout.maximumWidth());
                 }
             }
         }
         m_maxTextWidth += 5; // cursorwidth
     }
     return m_maxTextWidth;
 }
 
 LineType MergeResultWindow::getNofLines() const
 {
     return m_nofLines;
 }
 
 qint32 MergeResultWindow::getVisibleTextAreaWidth() const
 {
     return width() - getTextXOffset();
 }
 
 qint32 MergeResultWindow::getNofVisibleLines() const
 {
     QFontMetrics fm = fontMetrics();
     return (height() - 3) / fm.lineSpacing() - 2;
 }
 
 qint32 MergeResultWindow::getTextXOffset() const
 {
     QFontMetrics fm = fontMetrics();
     return 3 * fm.horizontalAdvance('0');
 }
 
 void MergeResultWindow::resizeEvent(QResizeEvent* e)
 {
     QWidget::resizeEvent(e);
     Q_EMIT resizeSignal();
 }
 
 e_OverviewMode MergeResultWindow::getOverviewMode() const
 {
     return mOverviewMode;
 }
 
 void MergeResultWindow::setOverviewMode(e_OverviewMode eOverviewMode)
 {
     mOverviewMode = eOverviewMode;
 }
 
 // Check whether we should ignore current delta when moving to next/previous delta
 bool MergeResultWindow::checkOverviewIgnore(const MergeBlockList::const_iterator i) const
 {
     if(mOverviewMode == e_OverviewMode::eOMNormal) return false;
     if(mOverviewMode == e_OverviewMode::eOMAvsB)
         return i->details() == e_MergeDetails::eCAdded || i->details() == e_MergeDetails::eCDeleted || i->details() == e_MergeDetails::eCChanged;
     if(mOverviewMode == e_OverviewMode::eOMAvsC)
         return i->details() == e_MergeDetails::eBAdded || i->details() == e_MergeDetails::eBDeleted || i->details() == e_MergeDetails::eBChanged;
     if(mOverviewMode == e_OverviewMode::eOMBvsC)
         return i->details() == e_MergeDetails::eBCAddedAndEqual || i->details() == e_MergeDetails::eBCDeleted || i->details() == e_MergeDetails::eBCChangedAndEqual;
     return false;
 }
 
 // Go to prev/next delta/conflict or first/last delta.
 void MergeResultWindow::go(Direction eDir, EndPoint eEndPoint)
 {
     assert(eDir == Direction::eUp || eDir == Direction::eDown);
     MergeBlockList::iterator i = m_currentMergeBlockIt;
     bool bSkipWhiteConflicts = !gOptions->m_bShowWhiteSpace;
     if(eEndPoint == EndPoint::eEnd)
     {
         if(eDir == Direction::eUp)
             i = m_mergeBlockList.begin(); // first mergeline
         else
             i = --m_mergeBlockList.end(); // last mergeline
 
         while(isItAtEnd(eDir == Direction::eUp, i) && !i->isDelta())
         {
             if(eDir == Direction::eUp)
                 ++i; // search downwards
             else
                 --i; // search upwards
         }
     }
     else if(eEndPoint == EndPoint::eDelta && isItAtEnd(eDir != Direction::eUp, i))
     {
         do
         {
             if(eDir == Direction::eUp)
                 --i;
             else
                 ++i;
         } while(isItAtEnd(eDir != Direction::eUp, i) && (!i->isDelta() || checkOverviewIgnore(i) || (bSkipWhiteConflicts && i->isWhiteSpaceConflict())));
     }
     else if(eEndPoint == EndPoint::eConflict && isItAtEnd(eDir != Direction::eUp, i))
     {
         do
         {
             if(eDir == Direction::eUp)
                 --i;
             else
                 ++i;
         } while(isItAtEnd(eDir != Direction::eUp, i) && (!i->isConflict() || (bSkipWhiteConflicts && i->isWhiteSpaceConflict())));
     }
     else if(isItAtEnd(eDir != Direction::eUp, i) && eEndPoint == EndPoint::eUnsolvedConflict)
     {
         do
         {
             if(eDir == Direction::eUp)
                 --i;
             else
                 ++i;
         } while(isItAtEnd(eDir != Direction::eUp, i) && !i->list().begin()->isConflict());
     }
 
     if(isVisible())
         setFocus();
 
     setFastSelector(i);
 }
 
 bool MergeResultWindow::isDeltaAboveCurrent() const
 {
     bool bSkipWhiteConflicts = !gOptions->m_bShowWhiteSpace;
     if(m_mergeBlockList.empty()) return false;
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(i == m_mergeBlockList.begin()) return false;
     do
     {
         --i;
         if(i->isDelta() && !checkOverviewIgnore(i) && !(bSkipWhiteConflicts && i->isWhiteSpaceConflict())) return true;
     } while(i != m_mergeBlockList.begin());
 
     return false;
 }
 
 bool MergeResultWindow::isDeltaBelowCurrent() const
 {
     const bool bSkipWhiteConflicts = !gOptions->m_bShowWhiteSpace;
     if(m_mergeBlockList.empty()) return false;
 
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(i != m_mergeBlockList.end())
     {
         ++i;
         for(; i != m_mergeBlockList.end(); ++i)
         {
             if(i->isDelta() && !checkOverviewIgnore(i) && !(bSkipWhiteConflicts && i->isWhiteSpaceConflict())) return true;
         }
     }
     return false;
 }
 
 bool MergeResultWindow::isConflictAboveCurrent() const
 {
     if(m_mergeBlockList.empty()) return false;
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(i == m_mergeBlockList.cbegin()) return false;
 
     bool bSkipWhiteConflicts = !gOptions->m_bShowWhiteSpace;
 
     do
     {
         --i;
         if(i->isConflict() && !(bSkipWhiteConflicts && i->isWhiteSpaceConflict())) return true;
     } while(i != m_mergeBlockList.cbegin());
 
     return false;
 }
 
 bool MergeResultWindow::isConflictBelowCurrent() const
 {
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(m_mergeBlockList.empty()) return false;
 
     bool bSkipWhiteConflicts = !gOptions->m_bShowWhiteSpace;
 
     if(i != m_mergeBlockList.cend())
     {
         ++i;
         for(; i != m_mergeBlockList.cend(); ++i)
         {
             if(i->isConflict() && !(bSkipWhiteConflicts && i->isWhiteSpaceConflict())) return true;
         }
     }
     return false;
 }
 
 bool MergeResultWindow::isUnsolvedConflictAtCurrent() const
 {
     if(m_mergeBlockList.empty()) return false;
 
     return m_currentMergeBlockIt->list().cbegin()->isConflict();
 }
 
 bool MergeResultWindow::isUnsolvedConflictAboveCurrent() const
 {
     if(m_mergeBlockList.empty()) return false;
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(i == m_mergeBlockList.cbegin()) return false;
 
     do
     {
         --i;
         if(i->list().cbegin()->isConflict()) return true;
     } while(i != m_mergeBlockList.cbegin());
 
     return false;
 }
 
 bool MergeResultWindow::isUnsolvedConflictBelowCurrent() const
 {
     MergeBlockList::const_iterator i = m_currentMergeBlockIt;
     if(m_mergeBlockList.empty()) return false;
 
     if(i != m_mergeBlockList.cend())
     {
         ++i;
         for(; i != m_mergeBlockList.cend(); ++i)
         {
             if(i->list().cbegin()->isConflict()) return true;
         }
     }
     return false;
 }
 
 void MergeResultWindow::slotGoTop()
 {
     go(Direction::eUp, EndPoint::eEnd);
 }
 
 void MergeResultWindow::slotGoCurrent()
 {
     setFastSelector(m_currentMergeBlockIt);
 }
 
 void MergeResultWindow::slotGoBottom()
 {
     go(Direction::eDown, EndPoint::eEnd);
 }
 
 void MergeResultWindow::slotGoPrevDelta()
 {
     go(Direction::eUp, EndPoint::eDelta);
 }
 
 void MergeResultWindow::slotGoNextDelta()
 {
     go(Direction::eDown, EndPoint::eDelta);
 }
 
 void MergeResultWindow::slotGoPrevConflict()
 {
     go(Direction::eUp, EndPoint::eConflict);
 }
 
 void MergeResultWindow::slotGoNextConflict()
 {
     go(Direction::eDown, EndPoint::eConflict);
 }
 
 void MergeResultWindow::slotGoPrevUnsolvedConflict()
 {
     go(Direction::eUp, EndPoint::eUnsolvedConflict);
 }
 
 void MergeResultWindow::slotGoNextUnsolvedConflict()
 {
     go(Direction::eDown, EndPoint::eUnsolvedConflict);
 }
 
 /** The line is given as a index in the Diff3LineList.
     The function calculates the corresponding iterator. */
 void MergeResultWindow::slotSetFastSelectorLine(LineType line)
 {
     MergeBlockList::iterator i;
     for(i = m_mergeBlockList.begin(); i != m_mergeBlockList.end(); ++i)
     {
         if(line >= i->getIndex() && line < i->getIndex() + i->sourceRangeLength())
         {
             setFastSelector(i);
             break;
         }
     }
 }
 
 qint32 MergeResultWindow::getNumberOfUnsolvedConflicts(qint32* pNrOfWhiteSpaceConflicts) const
 {
     qint32 nrOfUnsolvedConflicts = 0;
     if(pNrOfWhiteSpaceConflicts != nullptr)
         *pNrOfWhiteSpaceConflicts = 0;
 
     for(const MergeBlock& mb: m_mergeBlockList)
     {
         MergeEditLineList::const_iterator melIt = mb.list().cbegin();
         if(melIt->isConflict())
         {
             ++nrOfUnsolvedConflicts;
             if(mb.isWhiteSpaceConflict() && pNrOfWhiteSpaceConflicts != nullptr)
                 ++*pNrOfWhiteSpaceConflicts;
         }
     }
 
     return nrOfUnsolvedConflicts;
 }
 
 void MergeResultWindow::showNumberOfConflicts(bool showIfNone)
 {
     if(!gOptions->m_bShowInfoDialogs)
         return;
     qint32 nrOfConflicts = 0;
     qint32 nrOfUnsolvedConflicts = getNumberOfUnsolvedConflicts();
 
     for(const MergeBlock& entry: m_mergeBlockList)
     {
         if(entry.isConflict() || entry.isDelta())
             ++nrOfConflicts;
     }
 
     if(!showIfNone && nrOfUnsolvedConflicts == 0)
         return;
 
     QString totalInfo;
     if(m_pTotalDiffStatus->isBinaryEqualAB() && m_pTotalDiffStatus->isBinaryEqualAC())
         totalInfo += i18n("All input files are binary equal.");
     else if(m_pTotalDiffStatus->isTextEqualAB() && m_pTotalDiffStatus->isTextEqualAC())
         totalInfo += i18n("All input files contain the same text.");
     else
     {
         if(m_pTotalDiffStatus->isBinaryEqualAB())
             totalInfo += i18n("Files %1 and %2 are binary equal.\n", QStringLiteral("A"), QStringLiteral("B"));
         else if(m_pTotalDiffStatus->isTextEqualAB())
             totalInfo += i18n("Files %1 and %2 have equal text.\n", QStringLiteral("A"), QStringLiteral("B"));
         if(m_pTotalDiffStatus->isBinaryEqualAC())
             totalInfo += i18n("Files %1 and %2 are binary equal.\n", QStringLiteral("A"), QStringLiteral("C"));
         else if(m_pTotalDiffStatus->isTextEqualAC())
             totalInfo += i18n("Files %1 and %2 have equal text.\n", QStringLiteral("A"), QStringLiteral("C"));
         if(m_pTotalDiffStatus->isBinaryEqualBC())
             totalInfo += i18n("Files %1 and %2 are binary equal.\n", QStringLiteral("B"), QStringLiteral("C"));
         else if(m_pTotalDiffStatus->isTextEqualBC())
             totalInfo += i18n("Files %1 and %2 have equal text.\n", QStringLiteral("B"), QStringLiteral("C"));
     }
 
     KMessageBox::information(this,
                              i18n("Total number of conflicts: %1\n"
                                   "Number of automatically solved conflicts: %2\n"
                                   "Number of unsolved conflicts: %3\n"
                                   "%4",
                                   nrOfConflicts, nrOfConflicts - nrOfUnsolvedConflicts,
                                   nrOfUnsolvedConflicts, totalInfo),
                              i18n("Conflicts"));
 }
 
 void MergeResultWindow::setFastSelector(MergeBlockList::iterator i)
 {
     if(i == m_mergeBlockList.end())
         return;
     m_currentMergeBlockIt = i;
     Q_EMIT setFastSelectorRange(i->getIndex(), i->sourceRangeLength());
 
     LineRef line1 = 0;
 
     MergeBlockList::const_iterator mbIt = m_mergeBlockList.cbegin();
     for(; mbIt != m_mergeBlockList.cend(); ++mbIt)
     {
         if(mbIt == m_currentMergeBlockIt)
             break;
         line1 += mbIt->lineCount();
     }
 
     LineType nofLines = m_currentMergeBlockIt->lineCount();
     LineRef newFirstLine = getBestFirstLine(line1, nofLines, m_firstLine, getNofVisibleLines());
     if(newFirstLine != m_firstLine)
     {
         scrollVertically(newFirstLine - m_firstLine);
     }
 
     if(m_selection.isEmpty())
     {
         m_cursorXPos = 0;
         m_cursorOldXPixelPos = 0;
         m_cursorYPos = line1;
     }
 
     update();
     updateSourceMask();
     Q_EMIT updateAvailabilities();
 }
 
 void MergeResultWindow::choose(const e_SrcSelector selector)
 {
     if(m_currentMergeBlockIt == m_mergeBlockList.end())
         return;
 
     setModified();
 
     // First find range for which this change works.
     MergeBlock& mb = *m_currentMergeBlockIt;
 
     MergeEditLineList::iterator melIt;
 
     // Now check if selector is active for this range already.
     bool bActive = false;
 
     // Remove unneeded lines in the range.
     for(melIt = mb.list().begin(); melIt != mb.list().end();)
     {
         const MergeEditLine& mel = *melIt;
         if(mel.src() == selector)
             bActive = true;
 
         if(mel.src() == selector || !mel.isEditableText() || mel.isModified())
             melIt = mb.list().erase(melIt);
         else
             ++melIt;
     }
 
     if(!bActive) // Selected source wasn't active.
     {            // Append the lines from selected source here at rangeEnd.
         Diff3LineList::const_iterator d3llit = mb.id3l();
         qint32 j;
 
         for(j = 0; j < mb.sourceRangeLength(); ++j)
         {
             MergeEditLine mel(d3llit);
             mel.setSource(selector, false);
             mb.list().push_back(mel);
 
             ++d3llit;
         }
     }
 
     if(!mb.list().empty())
     {
         // Remove all lines that are empty, because no src lines are there.
         for(melIt = mb.list().begin(); melIt != mb.list().end();)
         {
             const MergeEditLine& mel = *melIt;
             const LineRef srcLine = mel.src() == e_SrcSelector::A ? mel.id3l()->getLineA() : mel.src() == e_SrcSelector::B ? mel.id3l()->getLineB() : mel.src() == e_SrcSelector::C ? mel.id3l()->getLineC() : LineRef();
 
             if(!srcLine.isValid())
                 melIt = mb.list().erase(melIt);
             else
                 ++melIt;
         }
     }
 
     if(mb.list().empty())
     {
         // Insert a dummy line:
         MergeEditLine mel(mb.id3l());
 
         if(bActive)
             mel.setConflict(); // All src entries deleted => conflict
         else
             mel.setRemoved(selector); // No lines in corresponding src found.
 
         mb.list().push_back(mel);
     }
 
     if(m_cursorYPos >= m_nofLines)
     {
         m_cursorYPos = m_nofLines - 1;
         m_cursorXPos = 0;
     }
 
     m_maxTextWidth = -1;
     update();
     updateSourceMask();
     Q_EMIT updateAvailabilities();
     showUnsolvedConflictsStatusMessage();
 }
 
 // bConflictsOnly: automatically choose for conflicts only (true) or for everywhere (false)
 void MergeResultWindow::chooseGlobal(e_SrcSelector selector, bool bConflictsOnly, bool bWhiteSpaceOnly)
 {
     resetSelection();
 
     merge(false, selector, bConflictsOnly, bWhiteSpaceOnly);
     setModified(true);
     update();
     showUnsolvedConflictsStatusMessage();
 }
 
 void MergeResultWindow::slotAutoSolve()
 {
     resetSelection();
     merge(true, e_SrcSelector::Invalid);
     setModified(true);
     update();
     showUnsolvedConflictsStatusMessage();
     showNumberOfConflicts();
 }
 
 void MergeResultWindow::slotUnsolve()
 {
     resetSelection();
     merge(false, e_SrcSelector::Invalid);
     setModified(true);
     update();
     showUnsolvedConflictsStatusMessage();
 }
 
 bool findParenthesesGroups(const QString& s, QStringList& sl)
 {
     sl.clear();
     QtSizeType i = 0;
     std::list<QtSizeType> startPosStack;
     QtSizeType length = s.length();
     for(i = 0; i < length; ++i)
     {
         if(s[i] == '\\' && i + 1 < length && (s[i + 1] == '\\' || s[i + 1] == '(' || s[i + 1] == ')'))
         {
             ++i;
             continue;
         }
         if(s[i] == '(')
         {
             startPosStack.push_back(i);
         }
         else if(s[i] == ')')
         {
             if(startPosStack.empty())
                 return false; // Parentheses don't match
             QtSizeType startPos = startPosStack.back();
             startPosStack.pop_back();
             sl.push_back(s.mid(startPos + 1, i - startPos - 1));
         }
     }
     return startPosStack.empty(); // false if parentheses don't match
 }
 
 QString calcHistorySortKey(const QString& keyOrder, QRegularExpressionMatch& regExprMatch, const QStringList& parenthesesGroupList)
 {
     const QStringList keyOrderList = keyOrder.split(',');
     QString key;
 
     for(const QString& keyIt : keyOrderList)
     {
         if(keyIt.isEmpty())
             continue;
         bool bOk = false;
         qint32 groupIdx = keyIt.toInt(&bOk);
         if(!bOk || groupIdx < 0 || groupIdx > parenthesesGroupList.size())
             continue;
         QString s = regExprMatch.captured(groupIdx);
         if(groupIdx == 0)
         {
             key += s + ' ';
             continue;
         }
 
         QString groupRegExp = parenthesesGroupList[groupIdx - 1];
         if(groupRegExp.indexOf('|') < 0 || groupRegExp.indexOf('(') >= 0)
         {
             bOk = false;
             qint32 i = s.toInt(&bOk);
             if(bOk && i >= 0 && i < 10000)
             {
                 s += QString(4 - s.size(), '0'); // This should help for correct sorting of numbers.
             }
             key += s + ' ';
         }
         else
         {
             // Assume that the groupRegExp consists of something like "Jan|Feb|Mar|Apr"
             // s is the string that managed to match.
             // Now we want to know at which position it occurred. e.g. Jan=0, Feb=1, Mar=2, etc.
             QStringList sl = groupRegExp.split('|');
             QtSizeType idx = sl.indexOf(s);
             if(idx >= 0)
             {
                 QString sIdx;
                 sIdx.setNum(idx);
                 assert(sIdx.size() <= 2);
                 sIdx += QString(2 - sIdx.size(), '0'); // Up to 99 words in the groupRegExp (more than 12 aren't expected)
                 key += sIdx + ' ';
             }
         }
     }
     return key;
 }
 
 void MergeResultWindow::collectHistoryInformation(
     e_SrcSelector src, const HistoryRange& historyRange,
     HistoryMap& historyMap,
     std::list<HistoryMap::iterator>& hitList // list of iterators
 )
 {
     std::list<HistoryMap::iterator>::const_iterator itHitListFront = hitList.cbegin();
     Diff3LineList::const_iterator id3l = historyRange.start;
     QString historyLead;
 
     historyLead = Utils::calcHistoryLead(id3l->getLineData(src).getLine());
 
     QRegularExpression historyStart(gOptions->m_historyStartRegExp);
     if(id3l == historyRange.end)
         return;
     //TODO: Where is this assumption coming from?
     ++id3l; // Skip line with "$Log ... $"
     QRegularExpression newHistoryEntry(gOptions->m_historyEntryStartRegExp);
     QRegularExpressionMatch match;
     QStringList parenthesesGroups;
     findParenthesesGroups(gOptions->m_historyEntryStartRegExp, parenthesesGroups);
     QString key;
     MergeEditLineList melList;
     bool bPrevLineIsEmpty = true;
     bool bUseRegExp = !gOptions->m_historyEntryStartRegExp.isEmpty();
 
     for(; id3l != historyRange.end; ++id3l)
     {
         const LineData& pld = id3l->getLineData(src);
         const QString& oriLine = pld.getLine();
         if(historyLead.isEmpty()) historyLead = Utils::calcHistoryLead(oriLine);
         QString sLine = oriLine.mid(historyLead.length());
         match = newHistoryEntry.match(sLine);
         if((!bUseRegExp && !sLine.trimmed().isEmpty() && bPrevLineIsEmpty) || (bUseRegExp && match.hasMatch()))
         {
             if(!key.isEmpty() && !melList.empty())
             {
                 // Only insert new HistoryMapEntry if key not found; in either case p.first is a valid iterator to element key.
                 std::pair<HistoryMap::iterator, bool> p = historyMap.insert(HistoryMap::value_type(key, HistoryMapEntry()));
                 HistoryMapEntry& hme = p.first->second;
                 if(src == e_SrcSelector::A) hme.mellA = melList;
                 else if(src == e_SrcSelector::B) hme.mellB = melList;
                 else hme.mellC = melList;
                 if(p.second) // Not in list yet?
                 {
                     hitList.insert(itHitListFront, p.first);
                 }
             }
 
             if(!bUseRegExp)
                 key = sLine;
             else
                 key = calcHistorySortKey(gOptions->m_historyEntryStartSortKeyOrder, match, parenthesesGroups);
 
             melList.clear();
             melList.push_back(MergeEditLine(id3l, src));
         }
         else if(!historyStart.match(oriLine).hasMatch())
         {
             melList.push_back(MergeEditLine(id3l, src));
         }
 
         bPrevLineIsEmpty = sLine.trimmed().isEmpty();
     }
     if(!key.isEmpty())
     {
         // Only insert new HistoryMapEntry if key not found; in either case p.first is a valid iterator to element key.
         std::pair<HistoryMap::iterator, bool> p = historyMap.insert(HistoryMap::value_type(key, HistoryMapEntry()));
         HistoryMapEntry& hme = p.first->second;
         if(src == e_SrcSelector::A) hme.mellA = melList;
         if(src == e_SrcSelector::B) hme.mellB = melList;
         if(src == e_SrcSelector::C) hme.mellC = melList;
         if(p.second) // Not in list yet?
         {
             hitList.insert(itHitListFront, p.first);
         }
     }
     // End of the history
 }
 
 MergeEditLineList& MergeResultWindow::HistoryMapEntry::choice(bool bThreeInputs)
 {
     if(!bThreeInputs)
         return mellA.empty() ? mellB : mellA;
     else
     {
         if(mellA.empty())
             return mellC.empty() ? mellB : mellC; // A doesn't exist, return one that exists
         else if(!mellB.empty() && !mellC.empty())
         { // A, B and C exist
             return mellA;
         }
         else
             return mellB.empty() ? mellB : mellC; // A exists, return the one that doesn't exist
     }
 }
 
 bool MergeResultWindow::HistoryMapEntry::staysInPlace(bool bThreeInputs, Diff3LineList::const_iterator& iHistoryEnd)
 {
     // The entry should stay in place if the decision made by the automerger is correct.
     Diff3LineList::const_iterator& iHistoryLast = iHistoryEnd;
     --iHistoryLast;
     if(!bThreeInputs)
     {
         if(!mellA.empty() && !mellB.empty() && mellA.begin()->id3l() == mellB.begin()->id3l() &&
            mellA.back().id3l() == iHistoryLast && mellB.back().id3l() == iHistoryLast)
         {
             iHistoryEnd = mellA.begin()->id3l();
             return true;
         }
         else
         {
             return false;
         }
     }
     else
     {
         if(!mellA.empty() && !mellB.empty() && !mellC.empty() && mellA.begin()->id3l() == mellB.begin()->id3l() && mellA.begin()->id3l() == mellC.begin()->id3l() && mellA.back().id3l() == iHistoryLast && mellB.back().id3l() == iHistoryLast && mellC.back().id3l() == iHistoryLast)
         {
             iHistoryEnd = mellA.begin()->id3l();
             return true;
         }
         else
         {
             return false;
         }
     }
 }
 
 void MergeResultWindow::slotMergeHistory()
 {
     HistoryRange        historyRange;
 
     // Search for history start, history end in the diff3LineList
     m_pDiff3LineList->findHistoryRange(QRegularExpression(gOptions->m_historyStartRegExp), m_pldC != nullptr, historyRange);
     if(historyRange.start != m_pDiff3LineList->end())
     {
         mUndoRec.reset();
         // Now collect the historyMap information
         HistoryMap historyMap;
         std::list<HistoryMap::iterator> hitList;
         if(m_pldC == nullptr)
         {
             collectHistoryInformation(e_SrcSelector::A, historyRange, historyMap, hitList);
             collectHistoryInformation(e_SrcSelector::B, historyRange, historyMap, hitList);
         }
         else
         {
             collectHistoryInformation(e_SrcSelector::A, historyRange, historyMap, hitList);
             collectHistoryInformation(e_SrcSelector::B, historyRange, historyMap, hitList);
             collectHistoryInformation(e_SrcSelector::C, historyRange, historyMap, hitList);
         }
 
         Diff3LineList::const_iterator iD3LHistoryOrigEnd = historyRange.end;
 
         bool bHistoryMergeSorting = gOptions->m_bHistoryMergeSorting && !gOptions->m_historyEntryStartSortKeyOrder.isEmpty() &&
                                     !gOptions->m_historyEntryStartRegExp.isEmpty();
 
         if(gOptions->m_maxNofHistoryEntries == -1)
         {
             // Remove parts from the historyMap and hitList that stay in place
             if(bHistoryMergeSorting)
             {
                 while(!historyMap.empty())
                 {
                     HistoryMap::iterator hMapIt = historyMap.begin();
                     if(hMapIt->second.staysInPlace(m_pldC != nullptr, historyRange.end))
                         historyMap.erase(hMapIt);
                     else
                         break;
                 }
             }
             else
             {
                 while(!hitList.empty())
                 {
                     HistoryMap::iterator hMapIt = hitList.back();
                     if(hMapIt->second.staysInPlace(m_pldC != nullptr, historyRange.end))
                         hitList.pop_back();
                     else
                         break;
                 }
             }
             while(iD3LHistoryOrigEnd != historyRange.end)
             {
                 --iD3LHistoryOrigEnd;
                 --historyRange.endIdx;
             }
         }
 
         MergeBlockList::iterator iMBLStart = m_mergeBlockList.splitAtDiff3LineIdx(historyRange.startIdx);
         MergeBlockList::iterator iMBLEnd = m_mergeBlockList.splitAtDiff3LineIdx(historyRange.endIdx);
         // Now join all MergeBlocks in the history
         MergeBlockList::iterator i = iMBLStart;
         if(i != iMBLEnd)
         {
             ++i;
             while(i != iMBLEnd)
             {
                 iMBLStart->join(*i);
                 i = m_mergeBlockList.erase(i);
             }
         }
         iMBLStart->list().clear();
         // Now insert the complete history into the first MergeLine of the history
         iMBLStart->list().push_back(MergeEditLine(historyRange.start, m_pldC == nullptr ? e_SrcSelector::B : e_SrcSelector::C));
         const QString lead = Utils::calcHistoryLead(historyRange.start->getString(e_SrcSelector::A));
         MergeEditLine mel(m_pDiff3LineList->end());
         mel.setString(lead);
         iMBLStart->list().push_back(mel);
 
         qint32 historyCount = 0;
         if(bHistoryMergeSorting)
         {
             // Create a sorted history
             HistoryMap::reverse_iterator hmit;
             for(hmit = historyMap.rbegin(); hmit != historyMap.rend(); ++hmit)
             {
                 if(historyCount == gOptions->m_maxNofHistoryEntries)
                     break;
                 ++historyCount;
                 HistoryMapEntry& hme = hmit->second;
                 MergeEditLineList& mell = hme.choice(m_pldC != nullptr);
                 if(!mell.empty())
                     iMBLStart->list().splice(iMBLStart->list().end(), mell, mell.begin(), mell.end());
             }
         }
         else
         {
             // Create history in order of appearance
             std::list<HistoryMap::iterator>::const_iterator hlit;
             for(hlit = hitList.begin(); hlit != hitList.end(); ++hlit)
             {
                 if(historyCount == gOptions->m_maxNofHistoryEntries)
                     break;
                 ++historyCount;
                 HistoryMapEntry& hme = (*hlit)->second;
                 MergeEditLineList& mell = hme.choice(m_pldC != nullptr);
                 if(!mell.empty())
                     iMBLStart->list().splice(iMBLStart->list().end(), mell, mell.begin(), mell.end());
             }
             // If the end of start is empty and the first line at the end is empty remove the last line of start
             if(!iMBLStart->list().empty() && !iMBLEnd->list().empty())
             {
                 const QString lastLineOfStart = iMBLStart->list().back().getString(m_pldA, m_pldB, m_pldC);
                 const QString firstLineOfEnd = iMBLEnd->list().front().getString(m_pldA, m_pldB, m_pldC);
                 if(lastLineOfStart.mid(lead.length()).trimmed().isEmpty() && firstLineOfEnd.mid(lead.length()).trimmed().isEmpty())
                     iMBLStart->list().pop_back();
             }
         }
         setFastSelector(iMBLStart);
         update();
     }
 }
 
 void MergeResultWindow::slotRegExpAutoMerge()
 {
     if(gOptions->m_autoMergeRegExp.isEmpty())
         return;
 
     QRegularExpression vcsKeywords(gOptions->m_autoMergeRegExp);
     MergeBlockList::iterator i;
 
     mUndoRec.reset();
     for(i = m_mergeBlockList.begin(); i != m_mergeBlockList.end(); ++i)
     {
         if(i->isConflict())
         {
             Diff3LineList::const_iterator id3l = i->id3l();
             if(vcsKeywords.match(id3l->getString(e_SrcSelector::A)).hasMatch() &&
                vcsKeywords.match(id3l->getString(e_SrcSelector::B)).hasMatch() &&
                (m_pldC == nullptr || vcsKeywords.match(id3l->getString(e_SrcSelector::C)).hasMatch()))
             {
                 MergeEditLine& mel = *i->list().begin();
                 mel.setSource(m_pldC == nullptr ? e_SrcSelector::B : e_SrcSelector::C, false);
                 m_mergeBlockList.splitAtDiff3LineIdx(i->getIndex() + 1);
             }
         }
     }
     update();
 }
 
 // This doesn't detect user modifications and should only be called after automatic merge
 // This will only do something for three file merge.
 // Irrelevant changes are those where all contributions from B are already contained in C.
 // Also irrelevant are conflicts automatically solved (auto-merge regexp and history auto-merge)
 // Precondition: The VCS-keyword would also be C.
 bool MergeResultWindow::doRelevantChangesExist()
 {
     if(m_pldC == nullptr || m_mergeBlockList.size() <= 1)
         return true;
 
     for(const MergeBlock& mergeBlock: m_mergeBlockList)
     {
         if((mergeBlock.isConflict() && mergeBlock.list().cbegin()->src() != e_SrcSelector::C) || mergeBlock.source() == e_SrcSelector::B)
         {
             return true;
         }
     }
 
     return false;
 }
 
 void MergeResultWindow::slotSplitDiff(qint32 firstD3lLineIdx, qint32 lastD3lLineIdx)
 {
     mUndoRec.reset();
 
     if(lastD3lLineIdx >= 0)
         m_mergeBlockList.splitAtDiff3LineIdx(lastD3lLineIdx + 1);
     setFastSelector(m_mergeBlockList.splitAtDiff3LineIdx(firstD3lLineIdx));
 }
 
 void MergeResultWindow::slotJoinDiffs(qint32 firstD3lLineIdx, qint32 lastD3lLineIdx)
 {
     MergeBlockList::iterator i;
     MergeBlockList::iterator iMBLStart = m_mergeBlockList.end();
     MergeBlockList::iterator iMBLEnd = m_mergeBlockList.end();
 
     mUndoRec.reset();
     for(i = m_mergeBlockList.begin(); i != m_mergeBlockList.end(); ++i)
     {
         const MergeBlock& mb = *i;
         if(firstD3lLineIdx >= mb.getIndex() && firstD3lLineIdx < mb.getIndex() + mb.sourceRangeLength())
         {
             iMBLStart = i;
         }
         if(lastD3lLineIdx >= mb.getIndex() && lastD3lLineIdx < mb.getIndex() + mb.sourceRangeLength())
         {
             iMBLEnd = i;
             ++iMBLEnd;
             break;
         }
     }
 
     bool bJoined = false;
     for(i = iMBLStart; i != iMBLEnd && i != m_mergeBlockList.end();)
     {
         if(i == iMBLStart)
         {
             ++i;
         }
         else
         {
             iMBLStart->join(*i);
             i = m_mergeBlockList.erase(i);
             bJoined = true;
         }
     }
     if(bJoined)
     {
         iMBLStart->list().clear();
         // Insert a conflict line as placeholder
         iMBLStart->list().push_back(MergeEditLine(iMBLStart->id3l()));
     }
     setFastSelector(iMBLStart);
 }
 
 void MergeResultWindow::myUpdate(qint32 afterMilliSecs)
 {
     if(m_delayedDrawTimer)
         killTimer(m_delayedDrawTimer);
     m_bMyUpdate = true;
     m_delayedDrawTimer = startTimer(afterMilliSecs);
 }
 
 void MergeResultWindow::timerEvent(QTimerEvent*)
 {
     killTimer(m_delayedDrawTimer);
     m_delayedDrawTimer = 0;
 
     if(m_bMyUpdate)
     {
         update();
         m_bMyUpdate = false;
     }
 
     if(m_scrollDeltaX != 0 || m_scrollDeltaY != 0)
     {
         QtSizeType newPos = m_selection.getLastPos() + m_scrollDeltaX;
         try
         {
             LineRef newLine = m_selection.getLastLine() + m_scrollDeltaY;
             m_selection.end(newLine, newPos > 0 ? newPos : 0);
         }
         catch(const std::system_error&)
         {
             m_selection.end(LineRef::invalid, newPos > 0 ? newPos : 0);
         }
 
         Q_EMIT scrollMergeResultWindow(m_scrollDeltaX, m_scrollDeltaY);
         killTimer(m_delayedDrawTimer);
         m_delayedDrawTimer = startTimer(50);
     }
 }
 
 QVector<QTextLayout::FormatRange> MergeResultWindow::getTextLayoutForLine(LineRef line, const QString& str, QTextLayout& textLayout)
 {
     // tabs
     QTextOption textOption;
 
     textOption.setTabStopDistance(QFontMetricsF(font()).horizontalAdvance(' ') * gOptions->tabSize());
 
     if(gOptions->m_bShowWhiteSpaceCharacters)
     {
         textOption.setFlags(QTextOption::ShowTabsAndSpaces);
     }
     textLayout.setTextOption(textOption);
 
     if(gOptions->m_bShowWhiteSpaceCharacters)
     {
         // This additional format is only necessary for the tab arrow
         QVector<QTextLayout::FormatRange> formats;
         QTextLayout::FormatRange formatRange;
         formatRange.start = 0;
         formatRange.length = SafeInt<qint32>(str.length());
         formatRange.format.setFont(font());
         formats.append(formatRange);
         textLayout.setFormats(formats);
     }
     QVector<QTextLayout::FormatRange> selectionFormat;
     textLayout.beginLayout();
     if(m_selection.lineWithin(line))
     {
         QtSizeType firstPosInText = m_selection.firstPosInLine(line);
         QtSizeType lastPosInText = m_selection.lastPosInLine(line);
 
         QtSizeType lengthInText = std::max<QtSizeType>(0, lastPosInText - firstPosInText);
         assert(lengthInText <= limits<qint32>::max());
 
         QTextLayout::FormatRange selection;
         selection.start = SafeInt<qint32>(firstPosInText);
         selection.length = SafeInt<qint32>(lengthInText);
         selection.format.setBackground(palette().highlight());
         selection.format.setForeground(palette().highlightedText().color());
         selectionFormat.push_back(selection);
     }
     QTextLine textLine = textLayout.createLine();
     textLine.setPosition(QPointF(0, fontMetrics().leading()));
     textLayout.endLayout();
     qint32 cursorWidth = 5;
     if(gOptions->m_bRightToLeftLanguage)
         textLayout.setPosition(QPointF(width() - textLayout.maximumWidth() - getTextXOffset() + m_horizScrollOffset - cursorWidth, 0));
     else
         textLayout.setPosition(QPointF(getTextXOffset() - m_horizScrollOffset, 0));
     return selectionFormat;
 }
 
 void MergeResultWindow::writeLine(
     RLPainter& p, LineRef line, const QString& str,
     e_SrcSelector srcSelect, e_MergeDetails mergeDetails, RangeFlags rangeMark, bool bUserModified, bool bLineRemoved, bool bWhiteSpaceConflict)
 {
     const QFontMetrics& fm = fontMetrics();
     qint32 fontHeight = fm.lineSpacing();
     qint32 fontAscent = fm.ascent();
 
     qint32 topLineYOffset = 0;
     qint32 xOffset = getTextXOffset();
 
     qint32 yOffset = (line - m_firstLine) * fontHeight;
     if(yOffset < 0 || yOffset > height())
         return;
 
     yOffset += topLineYOffset;
 
     QString srcName = QChar(' ');
     if(bUserModified)
         srcName = QChar('m');
     else if(srcSelect == e_SrcSelector::A && mergeDetails != e_MergeDetails::eNoChange)
         srcName = QStringLiteral("A");
     else if(srcSelect == e_SrcSelector::B)
         srcName = QStringLiteral("B");
     else if(srcSelect == e_SrcSelector::C)
         srcName = QStringLiteral("C");
 
     if(rangeMark & RangeMark::current)
     {
         p.fillRect(xOffset, yOffset, width(), fontHeight, gOptions->getCurrentRangeBgColor());
     }
 
     if((srcSelect > e_SrcSelector::None || bUserModified) && !bLineRemoved)
     {
         if(!gOptions->m_bRightToLeftLanguage)
             p.setClipRect(QRectF(xOffset, 0, width() - xOffset, height()));
         else
             p.setClipRect(QRectF(0, 0, width() - xOffset, height()));
 
         p.setPen(gOptions->foregroundColor());
 
         QTextLayout textLayout(str, font(), this);
         QVector<QTextLayout::FormatRange> selectionFormat = getTextLayoutForLine(line, str, textLayout);
         textLayout.draw(&p, QPointF(0, yOffset), selectionFormat);
 
         if(line == m_cursorYPos)
         {
             m_cursorXPixelPos = qCeil(textLayout.lineAt(0).cursorToX((qint32)m_cursorXPos));
             if(gOptions->m_bRightToLeftLanguage)
                 m_cursorXPixelPos += qCeil(textLayout.position().x() - m_horizScrollOffset);
         }
 
         p.setClipping(false);
 
         p.setPen(gOptions->foregroundColor());
 
         p.drawText(1, yOffset + fontAscent, srcName, true);
     }
     else if(bLineRemoved)
     {
         p.setPen(gOptions->conflictColor());
         p.drawText(xOffset, yOffset + fontAscent, i18n("<No src line>"));
         p.drawText(1, yOffset + fontAscent, srcName);
         if(m_cursorYPos == line) m_cursorXPos = 0;
     }
     else if(srcSelect == e_SrcSelector::None)
     {
         p.setPen(gOptions->conflictColor());
         if(bWhiteSpaceConflict)
             p.drawText(xOffset, yOffset + fontAscent, i18n("<Merge Conflict (Whitespace only)>"));
         else
             p.drawText(xOffset, yOffset + fontAscent, i18n("<Merge Conflict>"));
         p.drawText(1, yOffset + fontAscent, "?");
         if(m_cursorYPos == line) m_cursorXPos = 0;
     }
     else
         assert(false);
 
     xOffset -= fm.horizontalAdvance('0');
     p.setPen(gOptions->foregroundColor());
     if(rangeMark & RangeMark::begin) // begin mark
     {
         p.drawLine(xOffset, yOffset + 1, xOffset, yOffset + fontHeight / 2);
         p.drawLine(xOffset, yOffset + 1, xOffset - 2, yOffset + 1);
     }
     else
     {
         p.drawLine(xOffset, yOffset, xOffset, yOffset + fontHeight / 2);
     }
 
     if(rangeMark & RangeMark::end) // end mark
     {
         p.drawLine(xOffset, yOffset + fontHeight / 2, xOffset, yOffset + fontHeight - 1);
         p.drawLine(xOffset, yOffset + fontHeight - 1, xOffset - 2, yOffset + fontHeight - 1);
     }
     else
     {
         p.drawLine(xOffset, yOffset + fontHeight / 2, xOffset, yOffset + fontHeight);
     }
 
     if(rangeMark & RangeMark::current)
     {
         p.fillRect(xOffset + 3, yOffset, 3, fontHeight, gOptions->foregroundColor());
         /*      p.setPen( blue );
       p.drawLine( xOffset+2, yOffset, xOffset+2, yOffset+fontHeight-1 );
       p.drawLine( xOffset+3, yOffset, xOffset+3, yOffset+fontHeight-1 );*/
     }
 }
 
 void MergeResultWindow::setPaintingAllowed(bool bPaintingAllowed)
 {
     setUpdatesEnabled(bPaintingAllowed);
     if(!bPaintingAllowed)
     {
         reset();
     }
     else
         update();
 }
 
 void MergeResultWindow::paintEvent(QPaintEvent*)
 {
     if(m_pDiff3LineList == nullptr)
         return;
 
     const QFontMetrics& fm = fontMetrics();
     const qint32 fontWidth = fm.horizontalAdvance('0');
 
     if(!m_bCursorUpdate) // Don't redraw everything for blinking cursor?
     {
         const auto dpr = devicePixelRatioF();
         if(size() * dpr != m_pixmap.size())
         {
             m_pixmap = QPixmap(size() * dpr);
             m_pixmap.setDevicePixelRatio(dpr);
         }
 
         RLPainter p(&m_pixmap, gOptions->m_bRightToLeftLanguage, width(), fontWidth);
         p.setFont(font());
         p.QPainter::fillRect(rect(), gOptions->backgroundColor());
 
         //qint32 visibleLines = height() / fontHeight;
 
         const LineRef lastVisibleLine = m_firstLine + getNofVisibleLines() + 5;
         LineRef line = 0;
         MergeBlockList::const_iterator mbIt = m_mergeBlockList.cbegin();
         for(; mbIt != m_mergeBlockList.cend(); ++mbIt)
         {
             const MergeBlock& mb = *mbIt;
             if(line > lastVisibleLine || line + mb.lineCount() < m_firstLine)
             {
                 line += mb.lineCount();
             }
             else
             {
                 MergeEditLineList::const_iterator melIt;
                 for(melIt = mb.list().cbegin(); melIt != mb.list().cend(); ++melIt)
                 {
                     if(line >= m_firstLine && line <= lastVisibleLine)
                     {
                         const MergeEditLine& mel = *melIt;
                         MergeEditLineList::const_iterator melIt1 = melIt;
                         ++melIt1;
 
                         RangeFlags rangeMark = RangeMark::none;
                         if(melIt == mb.list().cbegin()) rangeMark |= RangeMark::begin; // Begin range mark
                         if(melIt1 == mb.list().cend()) rangeMark |= RangeMark::end;    // End range mark
 
                         if(mbIt == m_currentMergeBlockIt) rangeMark |= RangeMark::current; // Mark of the current line
 
                         const QString s = mel.getString(m_pldA, m_pldB, m_pldC);
 
                         writeLine(p, line, s, mel.src(), mb.details(), rangeMark,
                                   mel.isModified(), mel.isRemoved(), mb.isWhiteSpaceConflict());
                     }
                     ++line;
                 }
             }
         }
 
         if(line != m_nofLines)
         {
             m_nofLines = line;
 
             Q_EMIT resizeSignal();
         }
 
         p.end();
     }
 
     QPainter painter(this);
 
     if(!m_bCursorUpdate)
         painter.drawPixmap(0, 0, m_pixmap);
     else
     {
         painter.drawPixmap(0, 0, m_pixmap); // Draw everything. (Internally cursor rect is clipped anyway.)
         m_bCursorUpdate = false;
     }
 
     if(m_bCursorOn && hasFocus() && m_cursorYPos >= m_firstLine)
     {
         painter.setPen(gOptions->foregroundColor());
 
         QString str = getString(m_cursorYPos);
         QTextLayout textLayout(str, font(), this);
         getTextLayoutForLine(m_cursorYPos, str, textLayout);
         textLayout.drawCursor(&painter, QPointF(0, (m_cursorYPos - m_firstLine) * fontMetrics().lineSpacing()), m_cursorXPos);
     }
 
     painter.end();
 }
 
 void MergeResultWindow::updateSourceMask()
 {
     qint32 srcMask = 0;
     qint32 enabledMask = 0;
     if(!hasFocus() || m_pDiff3LineList == nullptr || !updatesEnabled() || m_currentMergeBlockIt == m_mergeBlockList.end())
     {
         srcMask = 0;
         enabledMask = 0;
     }
     else
     {
         enabledMask = m_pldC == nullptr ? 3 : 7;
         MergeBlock& mb = *m_currentMergeBlockIt;
 
         srcMask = 0;
         bool bModified = false;
         MergeEditLineList::iterator melIt;
         for(melIt = mb.list().begin(); melIt != mb.list().end(); ++melIt)
         {
             MergeEditLine& mel = *melIt;
             if(mel.src() == e_SrcSelector::A) srcMask |= 1;
             if(mel.src() == e_SrcSelector::B) srcMask |= 2;
             if(mel.src() == e_SrcSelector::C) srcMask |= 4;
             if(mel.isModified() || !mel.isEditableText()) bModified = true;
         }
 
         if(mb.details() == e_MergeDetails::eNoChange)
         {
             srcMask = 0;
             enabledMask = bModified ? 1 : 0;
         }
     }
 
     Q_EMIT sourceMask(srcMask, enabledMask);
 }
 
 void MergeResultWindow::focusInEvent(QFocusEvent* e)
 {
     updateSourceMask();
     QWidget::focusInEvent(e);
 }
 
 LineRef MergeResultWindow::convertToLine(qint32 y)
 {
     const QFontMetrics& fm = fontMetrics();
     const qint32 fontHeight = fm.lineSpacing();
     constexpr qint32 topLineYOffset = 0;
 
     qint32 yOffset = topLineYOffset - m_firstLine * fontHeight;
     if(yOffset > y)
         return LineRef::invalid;
 
     const LineRef line = std::min((y - yOffset) / fontHeight, m_nofLines - 1);
     return line;
 }
 
 void MergeResultWindow::mousePressEvent(QMouseEvent* e)
 {
     m_bCursorOn = true;
 
     const qint32 xOffset = getTextXOffset();
 
     const LineRef line = std::max<LineType>(convertToLine(e->pos().y()), 0);
     const QString s = getString(line);
     QTextLayout textLayout(s, font(), this);
     getTextLayoutForLine(line, s, textLayout);
     qint32 pos = textLayout.lineAt(0).xToCursor(e->pos().x() - textLayout.position().x());
 
     const bool lLeftMouseButton = e->button() == Qt::LeftButton;
     const bool lMiddleMouseButton = e->button() == Qt::MiddleButton;
     const bool lRightMouseButton = e->button() == Qt::RightButton;
 
     if((lLeftMouseButton && (e->pos().x() < xOffset)) || lRightMouseButton) // Fast range selection
     {
         m_cursorXPos = 0;
         m_cursorOldXPixelPos = 0;
         m_cursorYPos = line;
         LineType l = 0;
         MergeBlockList::iterator i;
         for(i = m_mergeBlockList.begin(); i != m_mergeBlockList.end(); ++i)
         {
             if(l == line)
                 break;
 
             l += i->lineCount();
             if(l > line)
                 break;
         }
         m_selection.reset(); // Disable current selection
 
         m_bCursorOn = true;
         setFastSelector(i);
 
         if(lRightMouseButton)
         {
             Q_EMIT showPopupMenu(QCursor::pos());
         }
     }
     else if(lLeftMouseButton) // Normal cursor placement
     {
         pos = std::max(pos, 0);
         if(e->modifiers() & Qt::ShiftModifier)
         {
             if(!m_selection.isValidFirstLine())
                 m_selection.start(line, pos);
             m_selection.end(line, pos);
         }
         else
         {
             // Selection
             m_selection.reset();
             m_selection.start(line, pos);
             m_selection.end(line, pos);
         }
         m_cursorXPos = pos;
         m_cursorXPixelPos = qCeil(textLayout.lineAt(0).cursorToX(pos));
         if(gOptions->m_bRightToLeftLanguage)
             m_cursorXPixelPos += qCeil(textLayout.position().x() - m_horizScrollOffset);
         m_cursorOldXPixelPos = m_cursorXPixelPos;
         m_cursorYPos = line;
 
         update();
     }
     else if(lMiddleMouseButton) // Paste clipboard
     {
         pos = std::max(pos, 0);
 
         m_selection.reset();
         m_cursorXPos = pos;
         m_cursorOldXPixelPos = m_cursorXPixelPos;
         m_cursorYPos = line;
 
         pasteClipboard(true);
     }
 }
 
 void MergeResultWindow::mouseDoubleClickEvent(QMouseEvent* e)
 {
     if(e->button() == Qt::LeftButton)
     {
         const LineRef line = convertToLine(e->pos().y());
         const QString s = getString(line);
         QTextLayout textLayout(s, font(), this);
         getTextLayoutForLine(line, s, textLayout);
         qint32 pos = textLayout.lineAt(0).xToCursor(e->pos().x() - textLayout.position().x());
         m_cursorXPos = pos;
         m_cursorOldXPixelPos = m_cursorXPixelPos;
         m_cursorYPos = line;
 
         if(!s.isEmpty())
         {
             const bool selectionWasEmpty = m_selection.isEmpty();
             QtSizeType pos1, pos2;
 
             Utils::calcTokenPos(s, pos, pos1, pos2);
 
             resetSelection();
             m_selection.start(line, pos1);
             m_selection.end(line, pos2);
             if(!m_selection.isEmpty() && selectionWasEmpty)
                 Q_EMIT newSelection();
 
             update();
             // Q_EMIT selectionEnd() happens in the mouseReleaseEvent.
         }
     }
 }
 
 void MergeResultWindow::mouseReleaseEvent(QMouseEvent* e)
 {
     if(e->button() == Qt::LeftButton)
     {
         if(m_delayedDrawTimer)
         {
             killTimer(m_delayedDrawTimer);
             m_delayedDrawTimer = 0;
         }
 
         if(m_selection.isValidFirstLine())
         {
             Q_EMIT selectionEnd();
         }
 
         Q_EMIT updateAvailabilities();
     }
 }
 
 void MergeResultWindow::mouseMoveEvent(QMouseEvent* e)
 {
     const LineRef line = convertToLine(e->pos().y());
     const QString s = getString(line);
     QTextLayout textLayout(s, font(), this);
     getTextLayoutForLine(line, s, textLayout);
     const qint32 pos = textLayout.lineAt(0).xToCursor(e->pos().x() - textLayout.position().x());
     m_cursorXPos = pos;
     m_cursorOldXPixelPos = m_cursorXPixelPos;
     m_cursorYPos = line;
     if(m_selection.isValidFirstLine())
     {
         const bool selectionWasEmpty = m_selection.isEmpty();
         m_selection.end(line, pos);
         if(!m_selection.isEmpty() && selectionWasEmpty)
             Q_EMIT newSelection();
 
         myUpdate(0);
 
         // Scroll because mouse moved out of the window
         const QFontMetrics& fm = fontMetrics();
         const qint32 fontWidth = fm.horizontalAdvance('0');
         constexpr qint32 topLineYOffset = 0;
         qint32 deltaX = 0;
         qint32 deltaY = 0;
         if(!gOptions->m_bRightToLeftLanguage)
         {
             if(e->pos().x() < getTextXOffset()) deltaX = -1;
             if(e->pos().x() > width()) deltaX = +1;
         }
         else
         {
             if(e->pos().x() > width() - 1 - getTextXOffset()) deltaX = -1;
             if(e->pos().x() < fontWidth) deltaX = +1;
         }
         if(e->pos().y() < topLineYOffset) deltaY = -1;
         if(e->pos().y() > height()) deltaY = +1;
         m_scrollDeltaX = deltaX;
         m_scrollDeltaY = deltaY;
         if(deltaX != 0 || deltaY != 0)
         {
             Q_EMIT scrollMergeResultWindow(deltaX, deltaY);
         }
     }
 }
 
 void MergeResultWindow::slotCursorUpdate()
 {
     m_cursorTimer.stop();
     m_bCursorOn = !m_bCursorOn;
 
     if(isVisible())
     {
         m_bCursorUpdate = true;
 
         const QFontMetrics& fm = fontMetrics();
         constexpr qint32 topLineYOffset = 0;
         qint32 yOffset = (m_cursorYPos - m_firstLine) * fm.lineSpacing() + topLineYOffset;
 
         repaint(0, yOffset, width(), fm.lineSpacing() + 2);
 
         m_bCursorUpdate = false;
     }
 
     m_cursorTimer.start(500);
 }
 
 void MergeResultWindow::wheelEvent(QWheelEvent* pWheelEvent)
 {
     const QPoint delta = pWheelEvent->angleDelta();
     //Block diagonal scrolling easily generated unintentionally with track pads.
     if(delta.y() != 0 && abs(delta.y()) > abs(delta.x()) && mVScrollBar != nullptr)
     {
         pWheelEvent->accept();
         QCoreApplication::sendEvent(mVScrollBar, pWheelEvent);
     }
 }
 
 bool MergeResultWindow::event(QEvent* e)
 {
     if(e->type() == QEvent::KeyPress)
     {
         QKeyEvent* keyEvent = static_cast<QKeyEvent*>(e);
         if(keyEvent->key() == Qt::Key_Tab)
         {
             // special tab handling here to avoid moving focus
             keyPressEvent(keyEvent);
             return true;
         }
     }
     return QWidget::event(e);
 }
 
 void MergeResultWindow::keyPressEvent(QKeyEvent* keyEvent)
 {
     qint32 y = m_cursorYPos;
     MergeBlockList::iterator mbIt;
     MergeEditLineList::iterator melIt;
     if(!calcIteratorFromLineNr(y, mbIt, melIt))
     {
         // no data loaded or y out of bounds
         keyEvent->ignore();
         return;
     }
 
     QString str = melIt->getString(m_pldA, m_pldB, m_pldC);
     SafeInt<qint32> x = m_cursorXPos;
 
     QTextLayout textLayoutOrig(str, font(), this);
     getTextLayoutForLine(y, str, textLayoutOrig);
 
     bool bCtrl = (keyEvent->modifiers() & Qt::ControlModifier) != 0;
     bool bShift = (keyEvent->modifiers() & Qt::ShiftModifier) != 0;
 #ifdef Q_OS_WIN
     bool bAlt = (keyEvent->modifiers() & Qt::AltModifier) != 0;
     if(bCtrl && bAlt)
     {
         bCtrl = false;
         bAlt = false;
     } // AltGr-Key pressed.
 #endif
 
     bool bYMoveKey = false;
     // Special keys
     switch(keyEvent->key())
     {
         case Qt::Key_Pause:
         case Qt::Key_Print:
         case Qt::Key_SysReq:
         case Qt::Key_Escape:
         case Qt::Key_Backtab:
             break;
         case Qt::Key_Delete: {
             if(deleteSelection2(str, x, y, mbIt, melIt) || !melIt->isEditableText()) break;
 
             if(x >= str.length())
             {
                 if(y < m_nofLines - 1)
                 {
                     setModified();
                     MergeBlockList::iterator mbIt1;
                     MergeEditLineList::iterator melIt1;
                     if(calcIteratorFromLineNr(y + 1, mbIt1, melIt1) && melIt1->isEditableText())
                     {
                         const QString s2 = melIt1->getString(m_pldA, m_pldB, m_pldC);
                         melIt->setString(str + s2);
 
                         // Remove the line
                         if(mbIt1->lineCount() > 1)
                             mbIt1->list().erase(melIt1);
                         else
                             melIt1->setRemoved();
                     }
                 }
             }
             else
             {
                 QString s = str.left(x);
                 s += QStringView(str).mid(x + 1);
                 melIt->setString(s);
                 setModified();
             }
             break;
         }
         case Qt::Key_Backspace: {
             if(deleteSelection2(str, x, y, mbIt, melIt) || !melIt->isEditableText()) break;
 
             if(x == 0)
             {
                 if(y > 0)
                 {
                     setModified();
                     MergeBlockList::iterator mbIt1;
                     MergeEditLineList::iterator melIt1;
                     if(calcIteratorFromLineNr(y - 1, mbIt1, melIt1) && melIt1->isEditableText())
                     {
                         QString s1 = melIt1->getString(m_pldA, m_pldB, m_pldC);
                         melIt1->setString(s1 + str);
 
                         // Remove the previous line
                         if(mbIt->lineCount() > 1)
                             mbIt->list().erase(melIt);
                         else
                             melIt->setRemoved();
 
                         --y;
                         x = str.length();
                     }
                 }
             }
             else
             {
                 QString s = str.left(x - 1);
                 s += QStringView(str).mid(x);
                 --x;
                 melIt->setString(s);
                 setModified();
             }
             break;
         }
         case Qt::Key_Return:
         case Qt::Key_Enter: {
             if(!melIt->isEditableText()) break;
             deleteSelection2(str, x, y, mbIt, melIt);
             setModified();
             QString indentation;
             if(gOptions->autoIndent())
             { // calc last indentation
                 MergeBlockList::iterator mbIt1 = mbIt;
                 MergeEditLineList::iterator melIt1 = melIt;
                 for(;;)
                 {
                     const QString s = melIt1->getString(m_pldA, m_pldB, m_pldC);
                     if(!s.isEmpty())
                     {
                         QtSizeType i;
                         for(i = 0; i < s.length(); ++i)
                         {
                             if(s[i] != ' ' && s[i] != '\t') break;
                         }
                         if(i < s.length())
                         {
                             indentation = s.left(i);
                             break;
                         }
                     }
                     // Go back one line
                     if(melIt1 != mbIt1->list().begin())
                         --melIt1;
                     else
                     {
                         if(mbIt1 == m_mergeBlockList.begin()) break;
                         --mbIt1;
                         melIt1 = mbIt1->list().end();
                         --melIt1;
                     }
                 }
             }
             MergeEditLine mel(mbIt->id3l()); // Associate every mel with an id3l, even if not really valid.
             mel.setString(indentation + str.mid(x));
 
             if(x < str.length()) // Cut off the old line.
             {
                 // Since ps possibly points into melIt->str, first copy it into a temporary.
                 QString temp = str.left(x);
                 melIt->setString(temp);
             }
 
             ++melIt;
             mbIt->list().insert(melIt, mel);
             x = indentation.length();
             ++y;
             break;
         }
         case Qt::Key_Insert:
             m_bInsertMode = !m_bInsertMode;
             break;
         case Qt::Key_Home:
             x = 0;
             if(bCtrl)
             {
                 y = 0;
             }
             break; // cursor movement
         case Qt::Key_End:
             x = limits<qint32>::max();
             if(bCtrl)
             {
                 y = limits<qint32>::max();
             }
             break;
 
         case Qt::Key_Left:
         case Qt::Key_Right:
             if((keyEvent->key() == Qt::Key_Left) != gOptions->m_bRightToLeftLanguage)
             {
                 if(!bCtrl)
                 {
                     qint32 newX = textLayoutOrig.previousCursorPosition(x);
                     if(newX == x && y > 0)
                     {
                         --y;
                         x = limits<qint32>::max();
                     }
                     else
                     {
                         x = newX;
                     }
                 }
                 else
                 {
                     while(x > 0 && (str[(QtSizeType)x - 1] == ' ' || str[(QtSizeType)x - 1] == '\t'))
                     {
                         qint32 newX = textLayoutOrig.previousCursorPosition(x);
                         if(newX == x) break;
                         x = newX;
                     }
                     while(x > 0 && (str[(QtSizeType)x - 1] != ' ' && str[(QtSizeType)x - 1] != '\t'))
                     {
                         qint32 newX = textLayoutOrig.previousCursorPosition(x);
                         if(newX == x) break;
                         x = newX;
                     }
                 }
             }
             else
             {
                 if(!bCtrl)
                 {
                     qint32 newX = textLayoutOrig.nextCursorPosition(x);
                     if(newX == x && y < m_nofLines - 1)
                     {
                         ++y;
                         x = 0;
                     }
                     else
                     {
                         x = newX;
                     }
                 }
                 else
                 {
                     while(x < str.length() && (str[(QtSizeType)x] == ' ' || str[(QtSizeType)x] == '\t'))
                     {
                         qint32 newX = textLayoutOrig.nextCursorPosition(x);
                         if(newX == x) break;
                         x = newX;
                     }
                     while(x < str.length() && (str[(QtSizeType)x] != ' ' && str[(QtSizeType)x] != '\t'))
                     {
                         qint32 newX = textLayoutOrig.nextCursorPosition(x);
                         if(newX == x) break;
                         x = newX;
                     }
                 }
             }
             break;
 
         case Qt::Key_Up:
             if(!bCtrl)
             {
                 --y;
                 bYMoveKey = true;
             }
             break;
         case Qt::Key_Down:
             if(!bCtrl)
             {
                 ++y;
                 bYMoveKey = true;
             }
             break;
         case Qt::Key_PageUp:
             if(!bCtrl)
             {
                 y -= getNofVisibleLines();
                 bYMoveKey = true;
             }
             break;
         case Qt::Key_PageDown:
             if(!bCtrl)
             {
                 y += getNofVisibleLines();
                 bYMoveKey = true;
             }
             break;
         default: {
             QString t = keyEvent->text();
             if(t.isEmpty() || bCtrl || !melIt->isEditableText())
             {
                 keyEvent->ignore();
                 return;
             }
 
             deleteSelection2(str, x, y, mbIt, melIt);
 
             setModified();
             // Characters to insert
             QString s = str;
             if(t[0] == '\t' && gOptions->replaceTabs())
             {
                 qint32 spaces = (m_cursorXPos / gOptions->tabSize() + 1) * gOptions->tabSize() - m_cursorXPos;
                 t.fill(' ', spaces);
             }
             if(m_bInsertMode)
                 s.insert(x, t);
             else
                 s.replace(x, t.length(), t);
 
             melIt->setString(s);
             x += t.length();
             bShift = false;
         } // default case
     } // switch(e->key())
 
 
     y = qBound(0, y, m_nofLines - 1);
 
     str = calcIteratorFromLineNr(y, mbIt, melIt) ? melIt->getString(m_pldA, m_pldB, m_pldC) : QString();
 
     x = qBound<qint32>(0, x, SafeInt<qint32>(str.length()));
 
     qint32 newFirstLine = m_firstLine;
     qint32 newHorizScrollOffset = m_horizScrollOffset;
 
     if(y < m_firstLine)
         newFirstLine = y;
     else if(y > m_firstLine + getNofVisibleLines())
         newFirstLine = y - getNofVisibleLines();
 
     QTextLayout textLayout(str, font(), this);
     getTextLayoutForLine(m_cursorYPos, str, textLayout);
 
     // try to preserve cursor x pixel position when moving to another line
     if(bYMoveKey)
     {
         if(gOptions->m_bRightToLeftLanguage)
             x = textLayout.lineAt(0).xToCursor(m_cursorOldXPixelPos - (textLayout.position().x() - m_horizScrollOffset));
         else
             x = textLayout.lineAt(0).xToCursor(m_cursorOldXPixelPos);
     }
 
     m_cursorXPixelPos = qCeil(textLayout.lineAt(0).cursorToX((qint32)x));
     qint32 hF = 1; // horizontal factor
     if(gOptions->m_bRightToLeftLanguage)
     {
         m_cursorXPixelPos += qCeil(textLayout.position().x() - m_horizScrollOffset);
         hF = -1;
     }
     qint32 cursorWidth = 5;
     if(m_cursorXPixelPos < hF * m_horizScrollOffset)
         newHorizScrollOffset = hF * m_cursorXPixelPos;
     else if(m_cursorXPixelPos > hF * m_horizScrollOffset + getVisibleTextAreaWidth() - cursorWidth)
         newHorizScrollOffset = hF * (m_cursorXPixelPos - (getVisibleTextAreaWidth() - cursorWidth));
 
     qint32 newCursorX = x;
     if(bShift)
     {
         if(!m_selection.isValidFirstLine())
             m_selection.start(m_cursorYPos, m_cursorXPos);
 
         m_selection.end(y, newCursorX);
     }
     else
         m_selection.reset();
 
     m_cursorYPos = y;
     m_cursorXPos = newCursorX;
 
     // TODO if width of current line exceeds the current maximum width then force recalculating the scrollbars
     if(textLayout.maximumWidth() > getMaxTextWidth())
     {
         m_maxTextWidth = qCeil(textLayout.maximumWidth());
         Q_EMIT resizeSignal();
     }
     if(!bYMoveKey)
         m_cursorOldXPixelPos = m_cursorXPixelPos;
 
     m_bCursorOn = true;
     m_cursorTimer.start(500);
 
     Q_EMIT updateAvailabilities();
     update();
     if(newFirstLine != m_firstLine || newHorizScrollOffset != m_horizScrollOffset)
     {
         Q_EMIT scrollMergeResultWindow(newHorizScrollOffset - m_horizScrollOffset, newFirstLine - m_firstLine);
         return;
     }
 }
 
 /**
  * Determine MergeBlock and MergeEditLine from line number
  *
  * @param       line
  *              line number to look up
  * @param[out]  mbIt
  *              iterator to merge-line
  *              or m_mergeBlockList.end() if not available
  * @param[out]  melIt
  *              iterator to MergeEditLine
  *              or mbIt->mergeEditLineList.end() if not available
  *              @warning uninitialized if mbIt is not available!
  * @return      whether line is available;
  *              when true, @p mbIt and @p melIt are set to valid iterators
  */
 bool MergeResultWindow::calcIteratorFromLineNr(
     LineType line,
     MergeBlockList::iterator& mbIt,
     MergeEditLineList::iterator& melIt)
 {
     for(mbIt = m_mergeBlockList.begin(); mbIt != m_mergeBlockList.end(); ++mbIt)
     {
         MergeBlock& mb = *mbIt;
         if(line > mb.lineCount())
         {
             line -= mb.lineCount();
         }
         else
         {
             for(melIt = mb.list().begin(); melIt != mb.list().end(); ++melIt)
             {
                 --line;
                 if(line <= LineRef::invalid) return true;
             }
         }
     }
     return false;
 }
 
 QString MergeResultWindow::getSelection() const
 {
     QString selectionString;
 
     LineRef line = 0;
     for(const MergeBlock& mb: m_mergeBlockList)
     {
         for(const MergeEditLine& mel: mb.list())
         {
             if(m_selection.lineWithin(line))
             {
                 qint32 outPos = 0;
                 if(mel.isEditableText())
                 {
                     const QString str = mel.getString(m_pldA, m_pldB, m_pldC);
 
                     // Consider tabs
                     for(QtSizeType i = 0; i < str.length(); ++i)
                     {
                         qint32 spaces = 1;
                         if(str[i] == '\t')
                         {
                             spaces = tabber(outPos, gOptions->tabSize());
                         }
 
                         if(m_selection.within(line, outPos))
                         {
                             selectionString += str[i];
                         }
 
                         outPos += spaces;
                     }
                 }
                 else if(mel.isConflict())
                 {
                     selectionString += i18n("<Merge Conflict>");
                 }
 
                 if(m_selection.within(line, outPos))
                 {
 #ifdef Q_OS_WIN
                     selectionString += '\r';
 #endif
                     selectionString += '\n';
                 }
             }
 
             ++line;
         }
     }
 
     return selectionString;
 }
 
 bool MergeResultWindow::deleteSelection2(QString& s, SafeInt<qint32>& x, qint32& y,
                                          MergeBlockList::iterator& mbIt, MergeEditLineList::iterator& melIt)
 {
     if(!m_selection.isEmpty())
     {
         assert(m_selection.isValidFirstLine());
         deleteSelection();
 
         y = m_cursorYPos;
         x = m_cursorXPos;
 
         if(!calcIteratorFromLineNr(y, mbIt, melIt))
         {
             // deleteSelection() should never remove or empty the first line, so
             // resolving m_cursorYPos shall always succeed
             assert(false);
         }
 
         s = melIt->getString(m_pldA, m_pldB, m_pldC);
         return true;
     }
 
     return false;
 }
 
 void MergeResultWindow::deleteSelection()
 {
     if(m_selection.isEmpty())
     {
         return;
     }
     assert(m_selection.isValidFirstLine());
 
     setModified();
 
     LineRef line = 0;
     std::optional<MergeEditLineList::iterator> melItFirst;
     QString firstLineString;
 
     LineRef firstLine;
     LineRef lastLine;
 
     for(const MergeBlock& mb: m_mergeBlockList)
     {
         for(const MergeEditLine& mel: mb.list())
         {
             if(mel.isEditableText() && m_selection.lineWithin(line))
             {
                 if(!firstLine.isValid())
                     firstLine = line;
                 lastLine = line;
             }
 
             ++line;
         }
     }
 
     if(!firstLine.isValid())
     {
         return; // Nothing to delete.
     }
 
     MergeBlockList::iterator mbIt;
     line = 0;
     for(mbIt = m_mergeBlockList.begin(); mbIt != m_mergeBlockList.end(); ++mbIt)
     {
         MergeBlock& mb = *mbIt;
         MergeEditLineList::iterator melIt, melIt1;
         for(melIt = mb.list().begin(); melIt != mb.list().end();)
         {
             const MergeEditLine& mel = *melIt;
             melIt1 = melIt;
             ++melIt1;
 
             if(mel.isEditableText() && m_selection.lineWithin(line))
             {
                 const QString lineString = mel.getString(m_pldA, m_pldB, m_pldC);
                 QtSizeType firstPosInLine = m_selection.firstPosInLine(line);
                 QtSizeType lastPosInLine = m_selection.lastPosInLine(line);
 
                 if(line == firstLine)
                 {
                     mUndoRec = std::make_shared<UndoRecord>(m_selection, mbIt);
                     melItFirst = melIt;
                     QtSizeType pos = firstPosInLine;
                     firstLineString = lineString.left(pos);
                 }
                 assert(mUndoRec);
                 mUndoRec->push(mb);
 
                 if(line == lastLine)
                 {
                     assert(melItFirst.has_value());
                     // This is the last line in the selection
                     QtSizeType pos = lastPosInLine;
                     firstLineString += QStringView(lineString).mid(pos); // rest of line
                     melItFirst.value()->setString(firstLineString);
                 }
 
                 if(line != firstLine || (m_selection.endPos() - m_selection.beginPos()) == lineString.length())
                 {
                     // Remove the line
                     if(mb.lineCount() > 1)
                         mb.list().erase(melIt);
                     else
                         melIt->setRemoved();
                 }
             }
 
             ++line;
             melIt = melIt1;
         }
     }
 
     m_cursorYPos = m_selection.beginLine();
     m_cursorXPos = m_selection.beginPos();
     m_cursorOldXPixelPos = m_cursorXPixelPos;
 
     m_selection.reset();
 }
 
 void MergeResultWindow::pasteClipboard(bool bFromSelection)
 {
     mUndoRec.reset();
     //checking of m_selection if needed is done by deleteSelection no need for check here.
     deleteSelection();
 
     setModified();
 
     LineRef y = m_cursorYPos;
     MergeBlockList::iterator mbIt;
     MergeEditLineList::iterator melIt, melItAfter;
     if (!calcIteratorFromLineNr(y, mbIt, melIt))
     {
         return;
     }
     melItAfter = melIt;
     ++melItAfter;
     const QString str = melIt->getString(m_pldA, m_pldB, m_pldC);
     qint32 x = m_cursorXPos;
 
     if(!QApplication::clipboard()->supportsSelection())
         bFromSelection = false;
 
     const QString clipBoard = QApplication::clipboard()->text(bFromSelection ? QClipboard::Selection : QClipboard::Clipboard);
 
     QString currentLine = str.left(x);
     const QString endOfLine = str.mid(x);
     QtSizeType i;
     const QtSizeType len = clipBoard.length();
     for(i = 0; i < len; ++i)
     {
         QChar c = clipBoard[i];
         if(c == '\n' || (c == '\r' && clipBoard[i + 1] != '\n'))
         {
             melIt->setString(currentLine);
             MergeEditLine mel(mbIt->id3l()); // Associate every mel with an id3l, even if not really valid.
             melIt = mbIt->list().insert(melItAfter, mel);
             currentLine = "";
             x = 0;
             ++y;
         }
         else
         {
             if(c == '\r') continue;
 
             currentLine += c;
             ++x;
         }
     }
 
     currentLine += endOfLine;
     melIt->setString(currentLine);
 
     m_cursorYPos = y;
     m_cursorXPos = x;
     m_cursorOldXPixelPos = m_cursorXPixelPos;
 
     update();
 }
 
 void MergeResultWindow::resetSelection()
 {
     m_selection.reset();
     update();
 }
 
 void MergeResultWindow::setModified(bool bModified)
 {
     if(bModified != m_bModified)
     {
         m_bModified = bModified;
         Q_EMIT modifiedChanged(m_bModified);
     }
 }
 
 /// Saves and returns true when successful.
 bool MergeResultWindow::saveDocument(const QString& fileName, const char* encoding, e_LineEndStyle eLineEndStyle)
 {
     // Are still conflicts somewhere?
     if(getNumberOfUnsolvedConflicts() > 0)
     {
         KMessageBox::error(this,
                            i18n("Not all conflicts are solved yet.\n"
                                 "File not saved."),
                            i18nc("Dialog title", "Conflicts Left"));
         return false;
     }
 
     if(eLineEndStyle == eLineEndStyleConflict || eLineEndStyle == eLineEndStyleUndefined)
     {
         KMessageBox::error(this,
                            i18n("There is a line end style conflict. Please choose the line end style manually.\n"
                                 "File not saved."),
                            i18nc("Dialog title", "Conflicts Left"));
         return false;
     }
 
     update();
 
     FileAccess file(fileName, true /*bWantToWrite*/);
     if(gOptions->m_bDmCreateBakFiles && file.exists())
     {
         bool bSuccess = file.createBackup(".orig");
         if(!bSuccess)
         {
             KMessageBox::error(this, file.getStatusText() + i18n("\n\nCreating backup failed. File not saved."), i18n("File Save Error"));
             return false;
         }
     }
 
     QByteArray dataArray;
     EncodedDataStream textOutStream(&dataArray, QIODevice::WriteOnly);
     if(strcmp(encoding, "UTF-8") != 0)
         textOutStream.setGenerateByteOrderMark(false);
     else
         textOutStream.setGenerateByteOrderMark(true); // Only for UTF-16
 
     textOutStream.setEncoding(encoding);
 
     // Determine the line feed for this file
     const QString lineFeed(eLineEndStyle == eLineEndStyleDos ? QString("\r\n") : QString("\n"));
 
     bool isFirstLine = true;
     for(const MergeBlock& mb: m_mergeBlockList)
     {
         for(const MergeEditLine& mel: mb.list())
         {
             if(mel.isEditableText())
             {
                 const QString str = mel.getString(m_pldA, m_pldB, m_pldC);
 
                 if(!isFirstLine && !mel.isRemoved())
                 {
                     // Put line feed between lines, but not for the first line
                     // or between lines that have been removed (because there
                     // isn't a line there).
                     textOutStream << lineFeed;
                 }
 
                 if(isFirstLine)
                     isFirstLine = mel.isRemoved();
 
                 textOutStream << str;
             }
         }
     }
 
     bool bSuccess = !textOutStream.hasError();
     if(bSuccess)
         bSuccess = file.writeFile(dataArray.data(), dataArray.size());
 
     if(!bSuccess)
     {
         KMessageBox::error(this, i18n("Error while writing."), i18n("File Save Error"));
         return false;
     }
 
     setModified(false);
     update();
 
     return true;
 }
 
 QString MergeResultWindow::getString(qint32 lineIdx)
 {
     MergeBlockList::iterator mbIt;
     MergeEditLineList::iterator melIt;
     if(!calcIteratorFromLineNr(lineIdx, mbIt, melIt))
     {
         return QString();
     }
     return melIt->getString(m_pldA, m_pldB, m_pldC);
 }
 
 bool MergeResultWindow::findString(const QString& s, LineRef& d3vLine, QtSizeType& posInLine, bool bDirDown, bool bCaseSensitive)
 {
     qint32 it = d3vLine;
     qint32 endIt = bDirDown ? getNofLines() : -1;
     qint32 step = bDirDown ? 1 : -1;
     QtSizeType startPos = posInLine;
 
     for(; it != endIt; it += step)
     {
         QString line = getString(it);
         if(!line.isEmpty())
         {
             QtSizeType pos = line.indexOf(s, startPos, bCaseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive);
 
             if(pos != -1)
             {
                 d3vLine = it;
                 posInLine = pos;
                 return true;
             }
 
             startPos = 0;
         }
     }
     return false;
 }
 
 void MergeResultWindow::setSelection(LineType firstLine, QtSizeType startPos, LineType lastLine, QtSizeType endPos)
 {
     if(lastLine >= getNofLines())
     {
         lastLine = getNofLines() - 1;
         QString s = getString(lastLine);
         endPos = s.length();
     }
     m_selection.reset();
     m_selection.start(firstLine, startPos);
     m_selection.end(lastLine, endPos);
     update();
 }
 
 void MergeResultWindow::scrollVertically(qint32 deltaY)
 {
     mVScrollBar->setValue(mVScrollBar->value()  + deltaY);
 }
 
 WindowTitleWidget::WindowTitleWidget()
 {
     setAutoFillBackground(true);
 
     QHBoxLayout* pHLayout = new QHBoxLayout(this);
     pHLayout->setContentsMargins(2, 2, 2, 2);
     pHLayout->setSpacing(2);
 
     m_pLabel = new QLabel(i18n("Output:"));
     pHLayout->addWidget(m_pLabel);
 
     m_pFileNameLineEdit = new FileNameLineEdit();
     pHLayout->addWidget(m_pFileNameLineEdit, 6);
     m_pFileNameLineEdit->installEventFilter(this);//for focus tracking
     m_pFileNameLineEdit->setAcceptDrops(true);
     m_pFileNameLineEdit->setReadOnly(true);
 
     //m_pBrowseButton = new QPushButton("...");
     //pHLayout->addWidget( m_pBrowseButton, 0 );
     //chk_connect_a( m_pBrowseButton, &QPushButton::clicked), this, &MergeResultWindow::slotBrowseButtonClicked);
 
     m_pModifiedLabel = new QLabel(i18n("[Modified]"));
     pHLayout->addWidget(m_pModifiedLabel);
     m_pModifiedLabel->setMinimumSize(m_pModifiedLabel->sizeHint());
     m_pModifiedLabel->setText("");
 
     pHLayout->addStretch(1);
 
     m_pEncodingLabel = new QLabel(i18n("Encoding for saving:"));
     pHLayout->addWidget(m_pEncodingLabel);
 
     m_pEncodingSelector = new QComboBox();
     m_pEncodingSelector->setSizeAdjustPolicy(QComboBox::AdjustToContents);
     pHLayout->addWidget(m_pEncodingSelector, 2);
     setEncodings(nullptr, nullptr, nullptr);
 
     m_pLineEndStyleLabel = new QLabel(i18n("Line end style:"));
     pHLayout->addWidget(m_pLineEndStyleLabel);
     m_pLineEndStyleSelector = new QComboBox();
     m_pLineEndStyleSelector->setSizeAdjustPolicy(QComboBox::AdjustToContents);
     pHLayout->addWidget(m_pLineEndStyleSelector);
     setLineEndStyles(eLineEndStyleUndefined, eLineEndStyleUndefined, eLineEndStyleUndefined);
 }
 
 void WindowTitleWidget::setFileName(const QString& fileName)
 {
     m_pFileNameLineEdit->setText(QDir::toNativeSeparators(fileName));
 }
 
 QString WindowTitleWidget::getFileName()
 {
     return m_pFileNameLineEdit->text();
 }
 
 //static QString getLineEndStyleName( e_LineEndStyle eLineEndStyle )
 //{
 //   if ( eLineEndStyle == eLineEndStyleDos )
 //      return "DOS";
 //   else if ( eLineEndStyle == eLineEndStyleUnix )
 //      return "Unix";
 //   return QString();
 //}
 
 void WindowTitleWidget::setLineEndStyles(e_LineEndStyle eLineEndStyleA, e_LineEndStyle eLineEndStyleB, e_LineEndStyle eLineEndStyleC)
 {
     m_pLineEndStyleSelector->clear();
     QString dosUsers;
     if(eLineEndStyleA == eLineEndStyleDos)
         dosUsers += QStringLiteral("A");
     if(eLineEndStyleB == eLineEndStyleDos)
         dosUsers += QLatin1String(dosUsers.isEmpty() ? "" : ", ") + QStringLiteral("B");
     if(eLineEndStyleC == eLineEndStyleDos)
         dosUsers += QLatin1String(dosUsers.isEmpty() ? "" : ", ") + QStringLiteral("C");
     QString unxUsers;
     if(eLineEndStyleA == eLineEndStyleUnix)
         unxUsers += QStringLiteral("A");
     if(eLineEndStyleB == eLineEndStyleUnix)
         unxUsers += QLatin1String(unxUsers.isEmpty() ? "" : ", ") + QStringLiteral("B");
     if(eLineEndStyleC == eLineEndStyleUnix)
         unxUsers += QLatin1String(unxUsers.isEmpty() ? "" : ", ") + QStringLiteral("C");
 
     m_pLineEndStyleSelector->addItem(i18n("Unix") + (unxUsers.isEmpty() ? QString("") : u8" (" + unxUsers + u8")"));
     m_pLineEndStyleSelector->addItem(i18n("DOS") + (dosUsers.isEmpty() ? QString("") : u8" (" + dosUsers + u8")"));
 
     e_LineEndStyle autoChoice = (e_LineEndStyle)gOptions->m_lineEndStyle;
 
     if(gOptions->m_lineEndStyle == eLineEndStyleAutoDetect)
     {
         if(eLineEndStyleA != eLineEndStyleUndefined && eLineEndStyleB != eLineEndStyleUndefined && eLineEndStyleC != eLineEndStyleUndefined)
         {
             if(eLineEndStyleA == eLineEndStyleB)
                 autoChoice = eLineEndStyleC;
             else if(eLineEndStyleA == eLineEndStyleC)
                 autoChoice = eLineEndStyleB;
             else
                 autoChoice = eLineEndStyleConflict; //conflict (not likely while only two values exist)
         }
         else
         {
             e_LineEndStyle c1, c2;
             if(eLineEndStyleA == eLineEndStyleUndefined)
             {
                 c1 = eLineEndStyleB;
                 c2 = eLineEndStyleC;
             }
             else if(eLineEndStyleB == eLineEndStyleUndefined)
             {
                 c1 = eLineEndStyleA;
                 c2 = eLineEndStyleC;
             }
             else /*if( eLineEndStyleC == eLineEndStyleUndefined )*/
             {
                 c1 = eLineEndStyleA;
                 c2 = eLineEndStyleB;
             }
             if(c1 == c2 && c1 != eLineEndStyleUndefined)
                 autoChoice = c1;
             else
                 autoChoice = eLineEndStyleConflict;
         }
     }
 
     if(autoChoice == eLineEndStyleUnix)
         m_pLineEndStyleSelector->setCurrentIndex(0);
     else if(autoChoice == eLineEndStyleDos)
         m_pLineEndStyleSelector->setCurrentIndex(1);
     else if(autoChoice == eLineEndStyleConflict)
     {
         m_pLineEndStyleSelector->addItem(i18n("Conflict"));
         m_pLineEndStyleSelector->setCurrentIndex(2);
     }
 }
 
 e_LineEndStyle WindowTitleWidget::getLineEndStyle()
 {
 
     qint32 current = m_pLineEndStyleSelector->currentIndex();
     if(current == 0)
         return eLineEndStyleUnix;
     else if(current == 1)
         return eLineEndStyleDos;
     else
         return eLineEndStyleConflict;
 }
 
 void WindowTitleWidget::setEncodings(const char* pCodecForA, const char* pCodecForB, const char* pCodecForC)
 {
     m_pEncodingSelector->clear();
 
     //Gather unique codecs not aliases
     const QList<qint32> mibs = QTextCodec::availableMibs();
     QList<QByteArray> names;
     for(const qint32 mib: mibs)
     {
         names.append(QTextCodec::codecForMib(mib)->name());
     }
 
     if(pCodecForA != nullptr)
         m_pEncodingSelector->addItem(i18n("Codec from A: %1", QLatin1String(pCodecForA)), QVariant::fromValue(QByteArray(pCodecForA)));
     if(pCodecForB != nullptr)
         m_pEncodingSelector->addItem(i18n("Codec from B: %1", QLatin1String(pCodecForB)), QVariant::fromValue(QByteArray(pCodecForB)));
     if(pCodecForC != nullptr)
         m_pEncodingSelector->addItem(i18n("Codec from C: %1", QLatin1String(pCodecForC)), QVariant::fromValue(QByteArray(pCodecForC)));
 
     m_pEncodingSelector->addItem("UTF 8", QVariant::fromValue(QByteArray("UTF-8")));
     m_pEncodingSelector->addItem("UTF 8 (BOM)", QVariant::fromValue(QByteArray("UTF-8-BOM")));
 
     for(const QByteArray& name: names)
     {
         m_pEncodingSelector->addItem(QString::fromUtf8(name), QVariant::fromValue(name));
     }
     m_pEncodingSelector->setMinimumSize(m_pEncodingSelector->sizeHint());
 
     if(pCodecForC != nullptr && pCodecForB != nullptr && pCodecForA != nullptr)
     {
         if(pCodecForA == pCodecForC)
             m_pEncodingSelector->setCurrentIndex(1); // B
         else
             m_pEncodingSelector->setCurrentIndex(2); // C
     }
     else if(pCodecForA != nullptr && pCodecForB != nullptr)
         m_pEncodingSelector->setCurrentIndex(1); // B
     else
         m_pEncodingSelector->setCurrentIndex(0);
 }
 
 const char* WindowTitleWidget::getEncoding()
 {
     return (const char*)m_pEncodingSelector->itemData(m_pEncodingSelector->currentIndex()).value<void*>();
 }
 
 void WindowTitleWidget::setEncoding(const char* encoding)
 {
     qint32 idx = m_pEncodingSelector->findText(QLatin1String(encoding));
     if(idx >= 0)
         m_pEncodingSelector->setCurrentIndex(idx);
 }
 
 //void WindowTitleWidget::slotBrowseButtonClicked()
 //{
 //   QString current = m_pFileNameLineEdit->text();
 //
 //   QUrl newURL = KFileDialog::getSaveUrl( current, 0, this, i18n("Select file (not saving yet)"));
 //   if ( !newURL.isEmpty() )
 //   {
 //      m_pFileNameLineEdit->setText( newURL.url() );
 //   }
 //}
 
 void WindowTitleWidget::slotSetModified(bool bModified)
 {
     m_pModifiedLabel->setText(bModified ? i18n("[Modified]") : "");
 }
 
 bool WindowTitleWidget::eventFilter([[maybe_unused]] QObject* o, QEvent* e)
 {
     if(e->type() == QEvent::FocusIn || e->type() == QEvent::FocusOut)
     {
         QPalette p = m_pLabel->palette();
 
         QColor c1 = gOptions->foregroundColor();
         QColor c2 = Qt::lightGray;
         if(e->type() == QEvent::FocusOut)
             c2 = gOptions->backgroundColor();
 
         p.setColor(QPalette::Window, c2);
         setPalette(p);
 
         p.setColor(QPalette::WindowText, c1);
         m_pLabel->setPalette(p);
         m_pEncodingLabel->setPalette(p);
         m_pEncodingSelector->setPalette(p);
     }
     return false;
 }
 
 //#include "mergeresultwindow.moc"