diff --git a/src/plugins/clangcodemodel/clangbackendreceiver.cpp b/src/plugins/clangcodemodel/clangbackendreceiver.cpp
index 39c7415a840..34e31368301 100644
--- a/src/plugins/clangcodemodel/clangbackendreceiver.cpp
+++ b/src/plugins/clangcodemodel/clangbackendreceiver.cpp
@@ -221,7 +221,7 @@ CppTools::CursorInfo::Range toCursorInfoRange(const SourceRangeContainer &source
     const SourceLocationContainer &end = sourceRange.end;
     const unsigned length = end.column - start.column;
 
-    return CppTools::CursorInfo::Range(start.line, start.column, length);
+    return {start.line, start.column, length};
 }
 
 static
diff --git a/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h b/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
index b51029492f9..08574e50186 100644
--- a/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
+++ b/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
@@ -39,6 +39,7 @@ class ClangCompletionAssistInterface;
 class ClangCompletionContextAnalyzer
 {
 public:
+    ClangCompletionContextAnalyzer() = delete;
     ClangCompletionContextAnalyzer(const ClangCompletionAssistInterface *assistInterface,
                                    CPlusPlus::LanguageFeatures languageFeatures);
     void analyze();
@@ -61,8 +62,6 @@ public:
     bool addSnippets() const { return m_addSnippets; }
 
 private:
-    ClangCompletionContextAnalyzer();
-
     int startOfFunctionCall(int endOfExpression) const;
 
     void setActionAndClangPosition(CompletionAction action,
diff --git a/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp b/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
index 8bc0b925c29..8fcbe3477b0 100644
--- a/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
+++ b/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
@@ -91,7 +91,7 @@ QChar selectionEndChar(const QChar startSymbol)
         return QLatin1Char('"');
     if (startSymbol == '<')
         return QLatin1Char('>');
-    return QChar();
+    return {};
 }
 
 void selectToLocationEnd(QTextCursor &cursor)
diff --git a/src/plugins/clangcodemodel/clangdiagnostictooltipwidget.cpp b/src/plugins/clangcodemodel/clangdiagnostictooltipwidget.cpp
index 4811e1b5431..af8c13e76d1 100644
--- a/src/plugins/clangcodemodel/clangdiagnostictooltipwidget.cpp
+++ b/src/plugins/clangcodemodel/clangdiagnostictooltipwidget.cpp
@@ -386,10 +386,14 @@ private:
 
     static int widthLimit()
     {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
         auto screen = QGuiApplication::screenAt(QCursor::pos());
         if (!screen)
             screen = QGuiApplication::primaryScreen();
         return screen->availableGeometry().width() / 2;
+#else
+        return QApplication::desktop()->availableGeometry(QCursor::pos()).width() / 2;
+#endif
     }
 
 private:
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
index aaca6380d2e..706c5101a3a 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
@@ -209,12 +209,12 @@ TextEditor::BlockRange
 toTextEditorBlock(QTextDocument *textDocument,
                   const ClangBackEnd::SourceRangeContainer &sourceRangeContainer)
 {
-    return TextEditor::BlockRange(::Utils::Text::positionInText(textDocument,
-                                                                sourceRangeContainer.start.line,
-                                                                sourceRangeContainer.start.column),
-                                  ::Utils::Text::positionInText(textDocument,
-                                                                sourceRangeContainer.end.line,
-                                                                sourceRangeContainer.end.column));
+    return {::Utils::Text::positionInText(textDocument,
+                                          sourceRangeContainer.start.line,
+                                          sourceRangeContainer.start.column),
+            ::Utils::Text::positionInText(textDocument,
+                                          sourceRangeContainer.end.line,
+                                          sourceRangeContainer.end.column)};
 }
 
 QList<TextEditor::BlockRange>
diff --git a/src/plugins/clangcodemodel/clangfollowsymbol.cpp b/src/plugins/clangcodemodel/clangfollowsymbol.cpp
index e5c66f6c6b1..96df23ab20a 100644
--- a/src/plugins/clangcodemodel/clangfollowsymbol.cpp
+++ b/src/plugins/clangcodemodel/clangfollowsymbol.cpp
@@ -35,6 +35,8 @@
 #include <utils/textutils.h>
 #include <utils/algorithm.h>
 
+#include <memory>
+
 namespace ClangCodeModel {
 namespace Internal {
 
@@ -199,7 +201,7 @@ void ClangFollowSymbol::findLink(const CppTools::CursorInEditor &data,
     if (m_watcher)
         m_watcher->cancel();
 
-    m_watcher.reset(new FutureSymbolWatcher());
+    m_watcher = std::make_unique<FutureSymbolWatcher>();
 
     QObject::connect(m_watcher.get(), &FutureSymbolWatcher::finished, [=, filePath=data.filePath(),
                      callback=std::move(processLinkCallback)]() mutable {
diff --git a/src/plugins/clangcodemodel/clanghighlightingresultreporter.cpp b/src/plugins/clangcodemodel/clanghighlightingresultreporter.cpp
index 125d4405a72..27eeea1af4a 100644
--- a/src/plugins/clangcodemodel/clanghighlightingresultreporter.cpp
+++ b/src/plugins/clangcodemodel/clanghighlightingresultreporter.cpp
@@ -138,10 +138,7 @@ TextEditor::HighlightingResult toHighlightingResult(
 {
     const auto textStyles = toTextStyles(tokenInfo.types);
 
-    return TextEditor::HighlightingResult(tokenInfo.line,
-                                          tokenInfo.column,
-                                          tokenInfo.length,
-                                          textStyles);
+    return {tokenInfo.line, tokenInfo.column, tokenInfo.length, textStyles};
 }
 
 } // anonymous
diff --git a/src/plugins/clangcodemodel/clangoverviewmodel.cpp b/src/plugins/clangcodemodel/clangoverviewmodel.cpp
index e182fa7e885..8c92e2f2461 100644
--- a/src/plugins/clangcodemodel/clangoverviewmodel.cpp
+++ b/src/plugins/clangcodemodel/clangoverviewmodel.cpp
@@ -233,8 +233,8 @@ bool OverviewModel::isGenerated(const QModelIndex &) const
     auto item = static_cast<TokenTreeItem *>(itemForIndex(sourceIndex));
     if (!item)
         return {};
-    return ::Utils::LineColumn(static_cast<int>(item->token.line),
-                               static_cast<int>(item->token.column));
+    return {static_cast<int>(item->token.line),
+            static_cast<int>(item->token.column)};
 }
 
 OverviewModel::Range OverviewModel::rangeFromIndex(const QModelIndex &sourceIndex) const
diff --git a/src/plugins/clangformat/clangformatbaseindenter.cpp b/src/plugins/clangformat/clangformatbaseindenter.cpp
index f5bc876020a..e8c6b5e9026 100644
--- a/src/plugins/clangformat/clangformatbaseindenter.cpp
+++ b/src/plugins/clangformat/clangformatbaseindenter.cpp
@@ -408,6 +408,36 @@ int ClangFormatBaseIndenter::indentBeforeCursor(const QTextBlock &block,
     return cursorPositionInEditor;
 }
 
+static bool doNotIndentInContext(QTextDocument *doc, int pos)
+{
+    const QChar character = doc->characterAt(pos);
+    const QTextBlock currentBlock = doc->findBlock(pos);
+    const QString text = currentBlock.text().left(pos - currentBlock.position());
+    switch (character.toLatin1()) {
+    default:
+        break;
+    case ':':
+        // Do not indent when it's the first ':' and it's not the 'case' line.
+        if (text.contains(QLatin1String("case")) || text.contains(QLatin1String("default"))
+            || text.contains(QLatin1String("public")) || text.contains(QLatin1String("private"))
+            || text.contains(QLatin1String("protected")) || text.contains(QLatin1String("signals"))
+            || text.contains(QLatin1String("Q_SIGNALS"))) {
+            return false;
+        }
+        if (pos > 0 && doc->characterAt(pos - 1) != ':')
+            return true;
+        break;
+    case '<':
+    case '>':
+        // "<<" and ">>" could be problematic
+        if (pos > 0 && doc->characterAt(pos - 1) == character)
+            return true;
+        break;
+    }
+
+    return false;
+}
+
 void ClangFormatBaseIndenter::indentBlock(const QTextBlock &block,
                                           const QChar &typedChar,
                                           int cursorPositionInEditor)
@@ -416,12 +446,21 @@ void ClangFormatBaseIndenter::indentBlock(const QTextBlock &block,
     const int blockPosition = currentBlock.position();
     trimFirstNonEmptyBlock(currentBlock);
 
+    if (typedChar != QChar::Null && cursorPositionInEditor > 0
+        && m_doc->characterAt(cursorPositionInEditor - 1) == typedChar
+        && doNotIndentInContext(m_doc, cursorPositionInEditor - 1)) {
+        return;
+    }
+
     if (formatWhileTyping()
-        && (cursorPositionInEditor == -1 || cursorPositionInEditor >= blockPosition)) {
+        && (cursorPositionInEditor == -1 || cursorPositionInEditor >= blockPosition)
+        && (typedChar == QChar::Null || typedChar == ';' || typedChar == '}')) {
         // Format before current position only in case the cursor is inside the indented block.
         // So if cursor position is less then the block position then the current line is before
         // the indented block - don't trigger extra formatting in this case.
         // cursorPositionInEditor == -1 means the consition matches automatically.
+
+        // Format only before newline or complete statement not to break code.
         if (cursorPositionInEditor >= 0)
             cursorPositionInEditor += currentBlock.position() - blockPosition;
         else
diff --git a/src/plugins/cppeditor/cppeditordocument.cpp b/src/plugins/cppeditor/cppeditordocument.cpp
index c1577424570..d058adac9ee 100644
--- a/src/plugins/cppeditor/cppeditordocument.cpp
+++ b/src/plugins/cppeditor/cppeditordocument.cpp
@@ -462,6 +462,8 @@ static int formatRange(QTextDocument *doc,
 bool CppEditorDocument::save(QString *errorString, const QString &fileName, bool autoSave)
 {
     if (indenter()->formatOnSave()) {
+        QTextCursor cursor(document());
+        cursor.joinPreviousEditBlock();
         auto *layout = qobject_cast<TextEditor::TextDocumentLayout *>(document()->documentLayout());
         const int documentRevision = layout->lastSaveRevision;
 
@@ -483,6 +485,7 @@ bool CppEditorDocument::save(QString *errorString, const QString &fileName, bool
         }
         if (editedRange.first != -1)
             formatRange(document(), indenter(), editedRange, tabSettings());
+        cursor.endEditBlock();
     }
 
     return TextEditor::TextDocument::save(errorString, fileName, autoSave);
diff --git a/src/plugins/debugger/debuggertooltipmanager.cpp b/src/plugins/debugger/debuggertooltipmanager.cpp
index 2f8cef1d243..6f23a9df629 100644
--- a/src/plugins/debugger/debuggertooltipmanager.cpp
+++ b/src/plugins/debugger/debuggertooltipmanager.cpp
@@ -624,11 +624,15 @@ void DebuggerToolTipWidget::computeSize()
     // Add a bit of space to account for tooltip border, and not
     // touch the border of the screen.
     QPoint pos(x(), y());
-    QTC_ASSERT(QApplication::desktop(), return);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
     auto screen = QGuiApplication::screenAt(pos);
     if (!screen)
         screen = QGuiApplication::primaryScreen();
     QRect desktopRect = screen->availableGeometry();
+#else
+    QTC_ASSERT(QApplication::desktop(), return);
+    QRect desktopRect = QApplication::desktop()->availableGeometry();
+#endif
     const int maxWidth = desktopRect.right() - pos.x() - 5 - 5;
     const int maxHeight = desktopRect.bottom() - pos.y() - 5 - 5;
 
diff --git a/src/plugins/perfprofiler/perfprofilertool.cpp b/src/plugins/perfprofiler/perfprofilertool.cpp
index bbd35ac3637..57de5ce14ac 100644
--- a/src/plugins/perfprofiler/perfprofilertool.cpp
+++ b/src/plugins/perfprofiler/perfprofilertool.cpp
@@ -164,7 +164,9 @@ PerfProfilerTool::PerfProfilerTool(QObject *parent) :
     m_filterMenu = new QMenu(m_filterButton);
     m_aggregateButton = new QToolButton;
     m_recordedLabel = new QLabel;
+    m_recordedLabel->setProperty("panelwidget", true);
     m_delayLabel = new QLabel;
+    m_delayLabel->setProperty("panelwidget", true);
 
     m_perspective.setAboutToActivateCallback([this]() { createViews(); });
 }
diff --git a/src/plugins/perfprofiler/perftimelinemodel.cpp b/src/plugins/perfprofiler/perftimelinemodel.cpp
index b1469725513..c2a383161b9 100644
--- a/src/plugins/perfprofiler/perftimelinemodel.cpp
+++ b/src/plugins/perfprofiler/perftimelinemodel.cpp
@@ -82,10 +82,6 @@ QVariantList PerfTimelineModel::labels() const
     sample.insert(QLatin1String("id"), PerfEvent::LastSpecialTypeId);
     result << sample;
 
-    QVariantMap kernel;
-    kernel.insert(QLatin1String("description"), tr("[kernel]"));
-    result << kernel;
-
     const PerfProfilerTraceManager *manager = traceManager();
     const bool aggregated = manager->aggregateAddresses();
     for (int i = 0; i < m_locationOrder.length(); ++i) {
diff --git a/src/plugins/projectexplorer/buildsteplist.cpp b/src/plugins/projectexplorer/buildsteplist.cpp
index 2734f4139d7..3b4ce596a48 100644
--- a/src/plugins/projectexplorer/buildsteplist.cpp
+++ b/src/plugins/projectexplorer/buildsteplist.cpp
@@ -185,7 +185,11 @@ bool BuildStepList::removeStep(int position)
 
 void BuildStepList::moveStepUp(int position)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
     m_steps.swapItemsAt(position - 1, position);
+#else
+    m_steps.swap(position - 1, position);
+#endif
     emit stepMoved(position, position - 1);
 }
 
diff --git a/src/plugins/qmakeprojectmanager/qmakenodes.cpp b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
index ab518780abd..7ae34f31b62 100644
--- a/src/plugins/qmakeprojectmanager/qmakenodes.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
@@ -171,7 +171,28 @@ bool QmakePriFileNode::removeSubProject(const QString &proFilePath)
 bool QmakePriFileNode::addFiles(const QStringList &filePaths, QStringList *notAdded)
 {
     QmakePriFile *pri = priFile();
-    return pri ? pri->addFiles(filePaths, notAdded) : false;
+    if (!pri)
+        return false;
+    QList<Node *> matchingNodes = findNodes([filePaths](const Node *n) {
+        return n->nodeType() == NodeType::File && filePaths.contains(n->filePath().toString());
+    });
+    matchingNodes = filtered(matchingNodes, [](const Node *n) {
+        for (const Node *parent = n->parentFolderNode(); parent;
+             parent = parent->parentFolderNode()) {
+            if (dynamic_cast<const ResourceEditor::ResourceTopLevelNode *>(parent))
+                return false;
+        }
+        return true;
+    });
+    QStringList alreadyPresentFiles = transform<QStringList>(matchingNodes,
+            [](const Node *n) { return n->filePath().toString(); });
+    alreadyPresentFiles.removeDuplicates();
+    QStringList actualFilePaths = filePaths;
+    for (const QString &e : alreadyPresentFiles)
+        actualFilePaths.removeOne(e);
+    if (notAdded)
+        *notAdded = alreadyPresentFiles;
+    return pri->addFiles(actualFilePaths, notAdded);
 }
 
 bool QmakePriFileNode::removeFiles(const QStringList &filePaths, QStringList *notRemoved)
diff --git a/src/plugins/qmlprofiler/qmlprofilertool.cpp b/src/plugins/qmlprofiler/qmlprofilertool.cpp
index 9669ed0b2cc..20798fd8c3a 100644
--- a/src/plugins/qmlprofiler/qmlprofilertool.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilertool.cpp
@@ -213,9 +213,7 @@ QmlProfilerTool::QmlProfilerTool()
             this, &QmlProfilerTool::toggleVisibleFeature);
 
     d->m_timeLabel = new QLabel();
-    QPalette palette;
-    palette.setColor(QPalette::WindowText, Qt::white);
-    d->m_timeLabel->setPalette(palette);
+    d->m_timeLabel->setProperty("panelwidget", true);
     d->m_timeLabel->setIndent(10);
     updateTimeDisplay();
     connect(d->m_timeLabel, &QObject::destroyed, &d->m_recordingTimer, &QTimer::stop);
diff --git a/src/plugins/texteditor/highlighter.cpp b/src/plugins/texteditor/highlighter.cpp
index c88a5aacb59..857c0f88cc7 100644
--- a/src/plugins/texteditor/highlighter.cpp
+++ b/src/plugins/texteditor/highlighter.cpp
@@ -121,6 +121,11 @@ Highlighter::Definition Highlighter::definitionForFileName(const QString &fileNa
     return highlightRepository()->definitionForFileName(fileName);
 }
 
+Highlighter::Definition Highlighter::definitionForName(const QString &name)
+{
+    return highlightRepository()->definitionForName(name);
+}
+
 Highlighter::Definitions Highlighter::definitionsForDocument(const TextDocument *document)
 {
     const Utils::MimeType mimeType = Utils::mimeTypeForName(document->mimeType());
diff --git a/src/plugins/texteditor/highlighter.h b/src/plugins/texteditor/highlighter.h
index cec2b0fb698..776f92faf35 100644
--- a/src/plugins/texteditor/highlighter.h
+++ b/src/plugins/texteditor/highlighter.h
@@ -46,6 +46,7 @@ public:
     static Definition definitionForDocument(const TextDocument *document);
     static Definition definitionForMimeType(const QString &mimeType);
     static Definition definitionForFileName(const QString &fileName);
+    static Definition definitionForName(const QString &name);
 
     static Definitions definitionsForDocument(const TextDocument *document);
     static Definitions definitionsForMimeType(const QString &mimeType);
diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index 6cf1b701366..5ac69be40ce 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -611,7 +611,7 @@ public:
     void updateCodeFoldingVisible();
 
     void reconfigure();
-    void updateSyntaxInfoBar(bool showInfo);
+    void updateSyntaxInfoBar(const Highlighter::Definitions &definitions, const QString &fileName);
     void configureGenericHighlighter(const KSyntaxHighlighting::Definition &definition);
 
 public:
@@ -3274,27 +3274,43 @@ void TextEditorWidgetPrivate::reconfigure()
     q->configureGenericHighlighter();
 }
 
-void TextEditorWidgetPrivate::updateSyntaxInfoBar(bool showInfo)
+void TextEditorWidgetPrivate::updateSyntaxInfoBar(const Highlighter::Definitions &definitions,
+                                                  const QString &fileName)
 {
-    Id id(Constants::INFO_SYNTAX_DEFINITION);
+    Id missing(Constants::INFO_MISSING_SYNTAX_DEFINITION);
+    Id multiple(Constants::INFO_MULTIPLE_SYNTAX_DEFINITIONS);
     InfoBar *infoBar = m_document->infoBar();
 
-    if (showInfo) {
-        InfoBarEntry info(id,
-                          BaseTextEditor::tr(
-                              "A highlight definition was not found for this file. "
-                              "Would you like to update highlight definition files?"),
+    if (definitions.isEmpty() && infoBar->canInfoBeAdded(missing)
+        && !TextEditorSettings::highlighterSettings().isIgnoredFilePattern(fileName)) {
+        InfoBarEntry info(missing,
+                          BaseTextEditor::tr("A highlight definition was not found for this file. "
+                                             "Would you like to update highlight definition files?"),
                           InfoBarEntry::GlobalSuppressionEnabled);
-        info.setCustomButtonInfo(BaseTextEditor::tr("Update Definitions"), [&]() {
-            m_document->infoBar()->removeInfo(id);
+        info.setCustomButtonInfo(BaseTextEditor::tr("Update Definitions"), [missing, this]() {
+            m_document->infoBar()->removeInfo(missing);
             Highlighter::updateDefinitions([widget = QPointer<TextEditorWidget>(q)]() {
                 if (widget)
                     widget->configureGenericHighlighter();
             });
         });
+
+        infoBar->removeInfo(multiple);
+        infoBar->addInfo(info);
+    } else if (definitions.size() > 1) {
+        InfoBarEntry info(multiple,
+                          BaseTextEditor::tr("More than one highlight definition was found for this file. "
+                                             "Which one should be used to highlight this file?"));
+        info.setComboInfo(Utils::transform(definitions, &Highlighter::Definition::name),
+                          [this](const QString &definition) {
+            this->configureGenericHighlighter(Highlighter::definitionForName(definition));
+        });
+
+        infoBar->removeInfo(missing);
         infoBar->addInfo(info);
     } else {
-        infoBar->removeInfo(id);
+        infoBar->removeInfo(multiple);
+        infoBar->removeInfo(missing);
     }
 }
 
@@ -8236,7 +8252,11 @@ void TextEditorWidgetPrivate::updateTabStops()
     // to be set as an int. A work around is to access directly the QTextOption.
     qreal charWidth = QFontMetricsF(q->font()).width(QLatin1Char(' '));
     QTextOption option = q->document()->defaultTextOption();
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
     option.setTabStopDistance(charWidth * m_document->tabSettings().m_tabSize);
+#else
+    option.setTabStop(charWidth * m_document->tabSettings().m_tabSize);
+#endif
     q->document()->setDefaultTextOption(option);
 }
 
@@ -8514,11 +8534,10 @@ QString TextEditorWidget::textAt(int from, int to) const
 
 void TextEditorWidget::configureGenericHighlighter()
 {
-    const Highlighter::Definition definition = Highlighter::definitionForDocument(textDocument());
-    d->configureGenericHighlighter(definition);
-    d->updateSyntaxInfoBar(!definition.isValid()
-            && !TextEditorSettings::highlighterSettings().isIgnoredFilePattern(
-                                  textDocument()->filePath().fileName()));
+    const Highlighter::Definitions definitions = Highlighter::definitionsForDocument(textDocument());
+    d->configureGenericHighlighter(definitions.isEmpty() ? Highlighter::Definition()
+                                                         : definitions.first());
+    d->updateSyntaxInfoBar(definitions, textDocument()->filePath().fileName());
 }
 
 int TextEditorWidget::blockNumberForVisibleRow(int row) const
diff --git a/src/plugins/texteditor/texteditorconstants.h b/src/plugins/texteditor/texteditorconstants.h
index 22fa68d83bd..949b4934570 100644
--- a/src/plugins/texteditor/texteditorconstants.h
+++ b/src/plugins/texteditor/texteditorconstants.h
@@ -188,7 +188,8 @@ const char GOTO_NEXT_WORD_WITH_SELECTION[] = "TextEditor.GotoNextWordWithSelecti
 const char GOTO_PREVIOUS_WORD_CAMEL_CASE_WITH_SELECTION[] = "TextEditor.GotoPreviousWordCamelCaseWithSelection";
 const char GOTO_NEXT_WORD_CAMEL_CASE_WITH_SELECTION[] = "TextEditor.GotoNextWordCamelCaseWithSelection";
 const char C_TEXTEDITOR_MIMETYPE_TEXT[] = "text/plain";
-const char INFO_SYNTAX_DEFINITION[] = "TextEditor.InfoSyntaxDefinition";
+const char INFO_MISSING_SYNTAX_DEFINITION[] = "TextEditor.InfoSyntaxDefinition";
+const char INFO_MULTIPLE_SYNTAX_DEFINITIONS[] = "TextEditor.InfoMultipleSyntaxDefinitions";
 const char TASK_OPEN_FILE[]        = "TextEditor.Task.OpenFile";
 const char CIRCULAR_PASTE[]        = "TextEditor.CircularPaste";
 const char SWITCH_UTF8BOM[]        = "TextEditor.SwitchUtf8bom";