diff --git a/NEWS.md b/NEWS.md
index 4d66fe04..b189007e 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -15,6 +15,8 @@ Red Panda C++ Version 2.8
   - enhancement: Let encoding options in the statusbar more explicit.
   - fix: Crash when find occurrences in a project that has missing files.
   - enhancement: Print current selection can be used in the print dialog.
+  - enhancement: Print syntax colored content.
+  - enhancement: Correctly handle tab in the exported RTF.
 
 Red Panda C++ Version 2.7
 
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index f31ee1f9..8ecdc004 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -31,8 +31,9 @@
 #include <QMimeData>
 #include "qsynedit/syntaxer/cpp.h"
 #include "syntaxermanager.h"
-#include "qsynedit/exporter/synrtfexporter.h"
-#include "qsynedit/exporter/synhtmlexporter.h"
+#include "qsynedit/exporter/rtfexporter.h"
+#include "qsynedit/exporter/htmlexporter.h"
+#include "qsynedit/exporter/qtsupportedhtmlexporter.h"
 #include "qsynedit/Constants.h"
 #include <QGuiApplication>
 #include <QClipboard>
@@ -1482,10 +1483,9 @@ void Editor::copyAsHTML()
 {
     if (!selAvail())
         return;
-    QSynedit::SynHTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
+    QSynedit::HTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
 
     exporter.setTitle(QFileInfo(mFilename).fileName());
-    exporter.setExportAsText(false);
     exporter.setUseBackground(pSettings->editor().copyHTMLUseBackground());
     exporter.setFont(font());
     QSynedit::PSyntaxer hl = syntaxer();
@@ -1504,7 +1504,7 @@ void Editor::copyAsHTML()
                                         ));
     exporter.setCreateHTMLFragment(true);
 
-    exporter.ExportRange(document(),blockBegin(),blockEnd());
+    exporter.exportRange(document(),blockBegin(),blockEnd());
 
     //clipboard takes the owner ship
     QMimeData * mimeData = new QMimeData;
@@ -2956,43 +2956,52 @@ void Editor::print()
     dialog.setWindowTitle(tr("Print Document"));
     dialog.setOption(QAbstractPrintDialog::PrintCurrentPage,false);
     dialog.setOption(QAbstractPrintDialog::PrintPageRange,false);
+
     if (selAvail())
-        dialog.setOption(QAbstractPrintDialog::PrintSelection);
+        dialog.setOption(QAbstractPrintDialog::PrintSelection,true);
+
     if (dialog.exec() != QDialog::Accepted) {
         return;
     }
-    QTextDocument doc;
-    QStringList lst;
-    if (dialog.testOption(QAbstractPrintDialog::PrintSelection))
-        lst = textToLines(selText());
-    else
-        lst = contents();
-    for (int i=0;i<lst.length();i++) {
-        int columns = 0;
-        QString line = lst[i];
-        QString newLine;
-        for (QChar ch:line) {
-            if (ch=='\t') {
-                int charCol = tabWidth() - (columns % tabWidth());
-                newLine += QString(charCol,' ');
-                columns += charCol;
-            } else {
-                newLine+=ch;
-                columns+=charColumns(ch);
-            }
-        }
-        lst[i]=newLine;
+
+    QSynedit::QtSupportedHtmlExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
+
+    exporter.setTitle(QFileInfo(mFilename).fileName());
+    exporter.setUseBackground(pSettings->editor().copyHTMLUseBackground());
+
+    exporter.setFont(font());
+    QSynedit::PSyntaxer hl = syntaxer();
+    if (!pSettings->editor().copyHTMLUseEditorColor()) {
+        hl = syntaxerManager.copy(syntaxer());
+        syntaxerManager.applyColorScheme(hl,pSettings->editor().copyHTMLColorScheme());
     }
+    exporter.setSyntaxer(hl);
+    exporter.setOnFormatToken(std::bind(&Editor::onExportedFormatToken,
+                                        this,
+                                        std::placeholders::_1,
+                                        std::placeholders::_2,
+                                        std::placeholders::_3,
+                                        std::placeholders::_4,
+                                        std::placeholders::_5
+                                        ));
+
+    if (dialog.testOption(QAbstractPrintDialog::PrintSelection))
+        exporter.exportRange(document(),blockBegin(),blockEnd());
+    else
+        exporter.exportAll(document());
+
+    QString html = exporter.text();
+    QTextDocument doc;
+
     doc.setDefaultFont(font());
-    doc.setPlainText(lst.join(lineBreak()));
+    doc.setHtml(html);
     doc.print(&printer);
 }
 
 void Editor::exportAsRTF(const QString &rtfFilename)
 {
-    QSynedit::SynRTFExporter exporter(pCharsetInfoManager->getDefaultSystemEncoding());
+    QSynedit::RTFExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
     exporter.setTitle(extractFileName(rtfFilename));
-    exporter.setExportAsText(true);
     exporter.setUseBackground(pSettings->editor().copyRTFUseBackground());
     exporter.setFont(font());
     QSynedit::PSyntaxer hl = syntaxer();
@@ -3009,15 +3018,14 @@ void Editor::exportAsRTF(const QString &rtfFilename)
                                         std::placeholders::_4,
                                         std::placeholders::_5
                                         ));
-    exporter.ExportAll(document());
-    exporter.SaveToFile(rtfFilename);
+    exporter.exportAll(document());
+    exporter.saveToFile(rtfFilename);
 }
 
 void Editor::exportAsHTML(const QString &htmlFilename)
 {
-    QSynedit::SynHTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
+    QSynedit::HTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
     exporter.setTitle(extractFileName(htmlFilename));
-    exporter.setExportAsText(false);
     exporter.setUseBackground(pSettings->editor().copyHTMLUseBackground());
     exporter.setFont(font());
     QSynedit::PSyntaxer hl = syntaxer();
@@ -3034,8 +3042,8 @@ void Editor::exportAsHTML(const QString &htmlFilename)
                                         std::placeholders::_4,
                                         std::placeholders::_5
                                         ));
-    exporter.ExportAll(document());
-    exporter.SaveToFile(htmlFilename);
+    exporter.exportAll(document());
+    exporter.saveToFile(htmlFilename);
 }
 
 void Editor::showCompletion(const QString& preWord,bool autoComplete, CodeCompletionType type)
diff --git a/libs/qsynedit/qsynedit.pro b/libs/qsynedit/qsynedit.pro
index a8dabd9d..d64b7ed0 100644
--- a/libs/qsynedit/qsynedit.pro
+++ b/libs/qsynedit/qsynedit.pro
@@ -27,9 +27,10 @@ SOURCES += qsynedit/CodeFolding.cpp \
     qsynedit/SynEdit.cpp \
     qsynedit/TextBuffer.cpp \
     qsynedit/TextPainter.cpp \
-    qsynedit/exporter/synexporter.cpp \
-    qsynedit/exporter/synhtmlexporter.cpp \
-    qsynedit/exporter/synrtfexporter.cpp \
+    qsynedit/exporter/exporter.cpp \
+    qsynedit/exporter/htmlexporter.cpp \
+    qsynedit/exporter/qtsupportedhtmlexporter.cpp \
+    qsynedit/exporter/rtfexporter.cpp \
     qsynedit/syntaxer/asm.cpp \
     qsynedit/syntaxer/cpp.cpp \
     qsynedit/syntaxer/customhighlighterv1.cpp \
@@ -53,9 +54,10 @@ HEADERS += qsynedit/Search.h \
     qsynedit/TextBuffer.h \
     qsynedit/TextPainter.h \
     qsynedit/Types.h \
-    qsynedit/exporter/synexporter.h \
-    qsynedit/exporter/synhtmlexporter.h \
-    qsynedit/exporter/synrtfexporter.h \
+    qsynedit/exporter/exporter.h \
+    qsynedit/exporter/htmlexporter.h \
+    qsynedit/exporter/qtsupportedhtmlexporter.h \
+    qsynedit/exporter/rtfexporter.h \
     qsynedit/syntaxer/asm.h \
     qsynedit/syntaxer/cpp.h \
     qsynedit/syntaxer/customhighlighterv1.h \
diff --git a/libs/qsynedit/qsynedit/exporter/exporter.cpp b/libs/qsynedit/qsynedit/exporter/exporter.cpp
new file mode 100644
index 00000000..290e9a69
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/exporter.cpp
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "exporter.h"
+
+#include <QClipboard>
+#include <QFile>
+#include <QGuiApplication>
+#include <QMimeData>
+#include <QTextCodec>
+
+namespace QSynedit {
+
+Exporter::Exporter(int tabSize, const QByteArray charset):
+    mTabSize(tabSize),
+    mCharset(charset)
+{
+    mFont = QGuiApplication::font();
+    mBackgroundColor = QGuiApplication::palette().color(QPalette::Base);
+    mForegroundColor = QGuiApplication::palette().color(QPalette::Text);
+    mUseBackground = false;
+    mFileEndingType = NewlineType::Windows;
+    clear();
+    setTitle("");
+}
+
+void Exporter::clear()
+{
+    mText.clear();
+    mLastStyle = FontStyle::fsNone;
+    mLastBG = QGuiApplication::palette().color(QPalette::Base);
+    mLastFG = QGuiApplication::palette().color(QPalette::Text);
+}
+
+void Exporter::exportAll(const PDocument& doc)
+{
+    exportRange(doc, BufferCoord{1, 1}, BufferCoord{INT_MAX, INT_MAX});
+}
+
+void Exporter::exportRange(const PDocument& doc, BufferCoord start, BufferCoord stop)
+{
+    // abort if not all necessary conditions are met
+    if (!doc || !mSyntaxer || (doc->count() == 0))
+        return;
+    stop.line = std::max(1, std::min(stop.line, doc->count()));
+    stop.ch = std::max(1, std::min(stop.ch, doc->getString(stop.line - 1).length() + 1));
+    start.line = std::max(1, std::min(start.line, doc->count()));
+    start.ch = std::max(1, std::min(start.ch, doc->getString(start.line - 1).length() + 1));
+    if ( (start.line > doc->count()) || (start.line > stop.line) )
+        return;
+    if ((start.line == stop.line) && (start.ch >= stop.ch))
+        return;
+    // initialization
+    mText.clear();
+    // export all the lines into fBuffer
+    mFirstAttribute = true;
+
+    if (start.line == 1)
+        mSyntaxer->resetState();
+    else
+        mSyntaxer->setState(doc->ranges(start.line-2));
+    for (int i = start.line; i<=stop.line; i++) {
+        QString Line = doc->getString(i-1);
+        // order is important, since Start.Y might be equal to Stop.Y
+//        if (i == Stop.Line)
+//            Line.remove(Stop.Char-1, INT_MAX);
+//        if ( (i = Start.Line) && (Start.Char > 1))
+//            Line.remove(0, Start.Char - 1);
+        // export the line
+        mSyntaxer->setLine(Line, i);
+        while (!mSyntaxer->eol()) {
+            PTokenAttribute attri = mSyntaxer->getTokenAttribute();
+            int startPos = mSyntaxer->getTokenPos();
+            QString token = mSyntaxer->getToken();
+            if (i==start.line && (startPos+token.length() < start.ch)) {
+                mSyntaxer->next();
+                continue;
+            }
+            if (i==stop.line && (startPos >= stop.ch-1)) {
+                mSyntaxer->next();
+                continue;
+            }
+            if (i==stop.line && (startPos+token.length() > stop.ch)) {
+                token = token.remove(stop.ch - startPos - 1);
+            }
+            if (i==start.line && startPos < start.ch-1) {
+                token = token.mid(start.ch-1-startPos);
+            }
+
+            QString Token = replaceReservedChars(token);
+            if (mOnFormatToken)
+                mOnFormatToken(mSyntaxer, i, mSyntaxer->getTokenPos()+1, mSyntaxer->getToken(),attri);
+            setTokenAttribute(attri);
+            formatToken(Token);
+            mSyntaxer->next();
+        }
+        if (i!=stop.line)
+            formatNewLine();
+    }
+    if (!mFirstAttribute)
+        formatAfterLastAttribute();
+    // insert header
+    insertData(0, getHeader());
+    // add footer
+    addData(getFooter());
+}
+
+void Exporter::saveToFile(const QString &filename)
+{
+    QFile file(filename);
+    if (file.open(QIODevice::WriteOnly)) {
+        writeToStream(file);
+    } else {
+        throw FileError(QObject::tr("Can't open file '%1' to write!").arg(filename));
+    }
+}
+
+void Exporter::writeToStream(QIODevice &stream)
+{
+    QTextCodec *codec=getCodec();
+    if (stream.write(codec->fromUnicode(mText))<0) {
+        throw FileError(QObject::tr("Failed to write data."));
+    }
+}
+
+QFont Exporter::font() const
+{
+    return mFont;
+}
+
+void Exporter::setFont(const QFont &font)
+{
+    mFont = font;
+}
+
+PSyntaxer Exporter::syntaxer() const
+{
+    return mSyntaxer;
+}
+
+void Exporter::setSyntaxer(PSyntaxer value)
+{
+    if (mSyntaxer != value) {
+        mSyntaxer = value;
+        clear();
+        if ((mSyntaxer) && (mSyntaxer->whitespaceAttribute()) && mUseBackground)
+            mBackgroundColor = mSyntaxer->whitespaceAttribute()->background();
+    }
+}
+
+QString Exporter::title() const
+{
+    return mTitle;
+}
+
+void Exporter::setTitle(const QString &Value)
+{
+    if (mTitle != Value) {
+      if (!Value.isEmpty())
+          mTitle = Value;
+      else
+          mTitle = "Untitled";
+    }
+}
+
+bool Exporter::useBackground() const
+{
+    return mUseBackground;
+}
+
+void Exporter::setUseBackground(bool Value)
+{
+    if (mUseBackground != Value) {
+        mUseBackground = Value;
+        clear();
+        if ((mSyntaxer) && (mSyntaxer->whitespaceAttribute()) && mUseBackground)
+            mBackgroundColor = mSyntaxer->whitespaceAttribute()->background();
+    }
+}
+
+NewlineType Exporter::fileEndingType() const
+{
+    return mFileEndingType;
+}
+
+void Exporter::setFileEndingType(const NewlineType &fileEndingType)
+{
+    mFileEndingType = fileEndingType;
+}
+
+QColor Exporter::foregroundColor() const
+{
+    return mForegroundColor;
+}
+
+void Exporter::setForegroundColor(const QColor &value)
+{
+    if (mForegroundColor != value) {
+        mForegroundColor = value;
+    }
+}
+
+QColor Exporter::backgroundColor() const
+{
+    return mBackgroundColor;
+}
+
+void Exporter::setBackgroundColor(const QColor &value)
+{
+    if (mBackgroundColor != value) {
+        mBackgroundColor = value;
+    }
+}
+
+QByteArray Exporter::charset() const
+{
+    return mCharset;
+}
+
+void Exporter::setCharset(const QByteArray &charset)
+{
+    mCharset = charset;
+}
+
+QString Exporter::defaultFilter() const
+{
+    return mDefaultFilter;
+}
+
+void Exporter::setDefaultFilter(const QString &defaultFilter)
+{
+    mDefaultFilter = defaultFilter;
+}
+
+void Exporter::addData(const QString &text)
+{
+    if (!text.isEmpty()) {
+        mText.append(text);
+    }
+}
+
+void Exporter::addDataNewLine(const QString &text)
+{
+    addData(text);
+    addNewLine();
+}
+
+void Exporter::addNewLine()
+{
+    addData(lineBreak());
+}
+
+void Exporter::formatToken(const QString &token)
+{
+    addData(token);
+}
+
+int Exporter::getBufferSize() const
+{
+    return mText.size();
+}
+
+QTextCodec * Exporter::getCodec() const {
+    QTextCodec* codec = QTextCodec::codecForName(mCharset);
+    if (codec == nullptr)
+        codec = QTextCodec::codecForLocale();
+    return codec;
+}
+void Exporter::insertData(int pos, const QString &text)
+{
+    if (!text.isEmpty()) {
+        mText.insert(pos,text);
+    }
+}
+
+QString Exporter::replaceReservedChars(const QString &token)
+{
+    if (token.isEmpty())
+        return "";
+    QString result;
+    for (QChar ch:token) {
+        if (mReplaceReserved.contains(ch)) {
+            result += mReplaceReserved[ch];
+        } else {
+            result += ch;
+        }
+    }
+    return result;
+}
+
+static QColor ValidatedColor(const QColor& color, const QColor& defaultColor) {
+    if (color.isValid())
+        return color;
+    else
+        return defaultColor;
+}
+
+void Exporter::setTokenAttribute(PTokenAttribute attri)
+{
+    if (mFirstAttribute) {
+        mFirstAttribute = false;
+        mLastBG = ValidatedColor(attri->background(), mBackgroundColor);
+        mLastFG = ValidatedColor(attri->foreground(), mForegroundColor);
+        mLastStyle = attri->styles();
+        formatBeforeFirstAttribute(
+                    mUseBackground && (mLastBG != mBackgroundColor),
+                    mLastFG != mForegroundColor, attri->styles());
+    } else {
+        bool ChangedBG = mUseBackground &&
+          (mLastBG != ValidatedColor(attri->background(), mBackgroundColor));
+        bool ChangedFG = (mLastFG != ValidatedColor(attri->foreground(), mForegroundColor));
+        if (ChangedBG || ChangedFG ||  (mLastStyle != attri->styles())) {
+            // which font style bits are to reset?
+            FontStyles ChangedStyles = mLastStyle & ~(attri->styles());
+            formatAttributeDone(ChangedBG, ChangedFG, ChangedStyles);
+            // which font style bits are to set?
+            ChangedStyles = attri->styles() & ~(mLastStyle);
+            mLastBG = ValidatedColor(attri->background(), mBackgroundColor);
+            mLastFG = ValidatedColor(attri->foreground(), mForegroundColor);
+            mLastStyle = attri->styles();
+            formatAttributeInit(ChangedBG, ChangedFG, ChangedStyles);
+        }
+    }
+}
+
+QByteArray Exporter::buffer() const
+{
+    QTextCodec* codec = getCodec();
+    return codec->fromUnicode(mText);
+}
+
+const QString &Exporter::text() const
+{
+    return mText;
+}
+
+QByteArray Exporter::clipboardFormat()
+{
+    return mClipboardFormat;
+}
+
+FormatTokenHandler Exporter::onFormatToken() const
+{
+    return mOnFormatToken;
+}
+
+void Exporter::setOnFormatToken(const FormatTokenHandler &onFormatToken)
+{
+    mOnFormatToken = onFormatToken;
+}
+
+QString Exporter::lineBreak()
+{
+    switch(mFileEndingType) {
+    case NewlineType::Unix:
+        return "\n";
+    case NewlineType::Windows:
+        return "\r\n";
+    case NewlineType::MacOld:
+        return "\r";
+    }
+    return "\n";
+}
+
+}
diff --git a/libs/qsynedit/qsynedit/exporter/synexporter.h b/libs/qsynedit/qsynedit/exporter/exporter.h
similarity index 68%
rename from libs/qsynedit/qsynedit/exporter/synexporter.h
rename to libs/qsynedit/qsynedit/exporter/exporter.h
index ee84b603..2d75f9d5 100644
--- a/libs/qsynedit/qsynedit/exporter/synexporter.h
+++ b/libs/qsynedit/qsynedit/exporter/exporter.h
@@ -14,8 +14,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-#ifndef SYNEXPORTER_H
-#define SYNEXPORTER_H
+#ifndef EXPORTER_H
+#define EXPORTER_H
 
 #include <QString>
 #include "../SynEdit.h"
@@ -23,48 +23,41 @@
 namespace QSynedit {
 using FormatTokenHandler = std::function<void(PSyntaxer syntaxHighlighter, int line, int column, const QString& token,
     PTokenAttribute& attr)>;
-class SynExporter
+class Exporter
 {
 
 public:
-    explicit SynExporter(const QByteArray charset);
+    explicit Exporter(int tabSize, const QByteArray charset);
 
     /**
      * @brief Clears the output buffer and any internal data that relates to the last
      *       exported text.
      */
     virtual void clear();
-    /**
-     * @brief Copies the output buffer contents to the clipboard, as the native format
-     *       or as text depending on the ExportAsText property.
-     */
-    void CopyToClipboard();
     /**
      * @brief Exports everything in the strings parameter to the output buffer.
-     * @param ALines
+     * @param doc
      */
-    void ExportAll(PDocument ALines);
+    void exportAll(const PDocument& doc);
 
     /**
      * @brief Exports the given range of the strings parameter to the output buffer.
-     * @param ALines
-     * @param Start
-     * @param Stop
+     * @param doc
+     * @param start
+     * @param stop
      */
-    void ExportRange(PDocument ALines,
-                     BufferCoord Start, BufferCoord Stop);
+    void exportRange(const PDocument& doc,
+                     BufferCoord start, BufferCoord stop);
     /**
      * @brief Saves the contents of the output buffer to a file.
      * @param AFileName
      */
-    void SaveToFile(const QString& AFileName);
+    void saveToFile(const QString& filename);
     /**
      * @brief Saves the contents of the output buffer to a stream.
-     * @param AStream
+     * @param stream
      */
-    void SaveToStream(QIODevice& AStream);
-    bool exportAsText() const;
-    void setExportAsText(bool Value);
+    void writeToStream(QIODevice& stream);
 
     QFont font() const;
     void setFont(const QFont &font);
@@ -85,7 +78,7 @@ public:
      * @brief The clipboard format the exporter creates as native format.
      * @return
      */
-    virtual QByteArray clipboardFormat();
+    QByteArray clipboardFormat();
 
     QColor foregroundColor() const;
     void setForegroundColor(const QColor &value);
@@ -102,15 +95,16 @@ public:
     FormatTokenHandler onFormatToken() const;
     void setOnFormatToken(const FormatTokenHandler &onFormatToken);
 
-    const QByteArray& buffer() const;
+    QByteArray buffer() const;
+    const QString& text() const;
 
 protected:
+    int mTabSize;
+    QByteArray mClipboardFormat;
     QByteArray mCharset;
     QColor mBackgroundColor;
     QColor mForegroundColor;
-    QByteArray mClipboardFormat;
     QString mDefaultFilter;
-    bool mExportAsText;
     QFont mFont;
     PSyntaxer mSyntaxer;
     QColor mLastBG;
@@ -125,126 +119,119 @@ protected:
 
     /**
      * @brief Adds a string to the output buffer.
-     * @param AText
+     * @param text
      */
-    void AddData(const QString& AText);
+    void addData(const QString& text);
 
     /**
      * @brief Adds a string and a trailing newline to the output buffer.
-     * @param AText
+     * @param text
      */
-    void AddDataNewLine(const QString& AText);
+    void addDataNewLine(const QString& text);
 
     /**
      * @brief Adds a newline to the output buffer.
      */
-    void AddNewLine();
-
-
-     /**
-     * @brief Copies the data under this format to the clipboard. The clipboard has to
-     *   be opened explicitly when more than one format is to be set.
-     */
-    void CopyToClipboardFormat(QByteArray AFormat);
+    void addNewLine();
 
     /**
      * @brief Has to be overridden in descendant classes to add the closing format
      *  strings to the output buffer.  The parameters can be used to track what
      *    changes are made for the next token.
-     * @param BackgroundChanged
-     * @param ForegroundChanged
-     * @param FontStylesChanged
+     * @param backgroundChanged
+     * @param foregroundChanged
+     * @param fontStyles
      */
-    virtual void FormatAttributeDone(bool BackgroundChanged, bool ForegroundChanged,
-                             FontStyles  FontStylesChanged) = 0;
+    virtual void formatAttributeDone(bool backgroundChanged, bool foregroundChanged,
+                             FontStyles  fontStyles) = 0;
 
     /**
      * @brief Has to be overridden in descendant classes to add the opening format
      *   strings to the output buffer.  The parameters can be used to track what
      *   changes have been made in respect to the previous token.
-     * @param BackgroundChanged
-     * @param ForegroundChanged
-     * @param FontStylesChanged
+     * @param backgroundChanged
+     * @param foregroundChanged
+     * @param fontStyles
      */
-    virtual void FormatAttributeInit(bool BackgroundChanged, bool ForegroundChanged,
-                                     FontStyles  FontStylesChanged) = 0;
+    virtual void formatAttributeInit(bool backgroundChanged, bool foregroundChanged,
+                                     FontStyles  fontStyles) = 0;
     /**
      * @brief Has to be overridden in descendant classes to add the closing format
      *   strings to the output buffer after the last token has been written.
      */
-    virtual void FormatAfterLastAttribute() = 0;
+    virtual void formatAfterLastAttribute() = 0;
 
     /**
      * @brief Has to be overridden in descendant classes to add the opening format
      *   strings to the output buffer when the first token is about to be written.
-     * @param BackgroundChanged
-     * @param ForegroundChanged
-     * @param FontStylesChanged
+     * @param backgroundChanged
+     * @param foregroundChanged
+     * @param fontStyles
      */
-    virtual void FormatBeforeFirstAttribute(bool BackgroundChanged, bool ForegroundChanged,
-                                            FontStyles  FontStylesChanged) = 0;
+    virtual void formatBeforeFirstAttribute(bool backgroundChanged, bool foregroundChanged,
+                                            FontStyles  fontStyles) = 0;
     /**
      * @brief Can be overridden in descendant classes to add the formatted text of
      *   the actual token text to the output buffer.
      */
-    virtual void FormatToken(const QString& Token) ;
+    virtual void formatToken(const QString& token) ;
     /**
      * @brief Has to be overridden in descendant classes to add a newline in the output
      *   format to the output buffer.
      */
-    virtual void FormatNewLine() = 0;
+    virtual void formatNewLine() = 0;
     /**
      * @brief Returns the size of the formatted text in the output buffer, to be used
      *   in the format header or footer.
      * @return
      */
-    int GetBufferSize();
+    int getBufferSize() const;
     /**
      * @brief Has to be overridden in descendant classes to return the correct output
      *   format footer.
      * @return
      */
-    virtual QString GetFooter() = 0;
+    virtual QString getFooter() = 0;
     /**
      * @brief Has to be overridden in descendant classes to return the name of the
      *   output format.
      * @return
      */
-    virtual QString GetFormatName() = 0;
+    virtual QString getFormatName() = 0;
     /**
      * @brief Has to be overridden in descendant classes to return the correct output
      *   format header.
      * @return
      */
-    virtual QString GetHeader() = 0;
+    virtual QString getHeader() = 0;
     /**
      * @brief Inserts a data block at the given position into the output buffer.  Is
      *   used to insert the format header after the exporting, since some header
      *     data may be known only after the conversion is done.
-     * @param APos
-     * @param AText
+     * @param pos
+     * @param text
      */
-    void InsertData(int APos, const QString& AText);
+    void insertData(int pos, const QString& text);
     /**
      * @brief Returns a string that has all the invalid chars of the output format
      *   replaced with the entries in the replacement array.
      */
-    QString ReplaceReservedChars(const QString &AToken);
+    QString replaceReservedChars(const QString &token);
     /**
      * @brief Sets the token attribute of the next token to determine the changes
      *   of colors and font styles so the properties of the next token can be
      *     added to the output buffer.
-     * @param Attri
+     * @param attri
      */
-    virtual void SetTokenAttribute(PTokenAttribute Attri);
+    virtual void setTokenAttribute(PTokenAttribute attri);
 
-    QTextCodec *getCodec();
+    QTextCodec *getCodec() const;
 private:
-    QByteArray mBuffer;
+    QString mText;
     bool mFirstAttribute;
     FormatTokenHandler mOnFormatToken;
 
 };
 }
 
-#endif // SYNEXPORTER_H
+#endif // EXPORTER_H
diff --git a/libs/qsynedit/qsynedit/exporter/synhtmlexporter.cpp b/libs/qsynedit/qsynedit/exporter/htmlexporter.cpp
similarity index 52%
rename from libs/qsynedit/qsynedit/exporter/synhtmlexporter.cpp
rename to libs/qsynedit/qsynedit/exporter/htmlexporter.cpp
index 91a353db..da917a44 100644
--- a/libs/qsynedit/qsynedit/exporter/synhtmlexporter.cpp
+++ b/libs/qsynedit/qsynedit/exporter/htmlexporter.cpp
@@ -14,14 +14,14 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-#include "synhtmlexporter.h"
+#include "htmlexporter.h"
 #include "../MiscProcs.h"
 #include <functional>
 
 namespace QSynedit {
 
-SynHTMLExporter::SynHTMLExporter(int tabSize,const QByteArray charset):
-    SynExporter(charset)
+HTMLExporter::HTMLExporter(int tabSize,const QByteArray charset):
+    Exporter(tabSize,charset)
 {
     mClipboardFormat = "text/html";
     mDefaultFilter = "HTML Documents (*.htm;*.html)|*.htm;*.html";
@@ -35,139 +35,139 @@ SynHTMLExporter::SynHTMLExporter(int tabSize,const QByteArray charset):
     mCreateHTMLFragment = false;
 }
 
-bool SynHTMLExporter::createHTMLFragment() const
+bool HTMLExporter::createHTMLFragment() const
 {
     return mCreateHTMLFragment;
 }
 
-void SynHTMLExporter::setCreateHTMLFragment(bool createHTMLFragment)
+void HTMLExporter::setCreateHTMLFragment(bool createHTMLFragment)
 {
     mCreateHTMLFragment = createHTMLFragment;
 }
 
-QString SynHTMLExporter::AttriToCSS(PTokenAttribute Attri, const QString &UniqueAttriName)
+QString HTMLExporter::attriToCSS(PTokenAttribute attri, const QString &uniqueAttriName)
 {
-    QString StyleName = MakeValidName(UniqueAttriName);
+    QString styleName = makeValidName(uniqueAttriName);
 
-    QString Result = "." + StyleName + " { ";
-    if (mUseBackground && Attri->background().isValid())
-        Result += "background-color: " + ColorToHTML(Attri->background()) + "; ";
-    if (Attri->foreground().isValid())
-        Result += "color: " + ColorToHTML(Attri->foreground()) + "; ";
+    QString result = "." + styleName + " { ";
+    if (mUseBackground && attri->background().isValid())
+        result += "background-color: " + colorToHTML(attri->background()) + "; ";
+    if (attri->foreground().isValid())
+        result += "color: " + colorToHTML(attri->foreground()) + "; ";
 
-    if (Attri->styles().testFlag(FontStyle::fsBold))
-        Result += "font-weight: bold; ";
-    if (Attri->styles().testFlag(FontStyle::fsItalic))
-        Result += "font-style: italic; ";
-    if (Attri->styles().testFlag(FontStyle::fsUnderline))
-        Result += "text-decoration: underline; ";
-    if (Attri->styles().testFlag(FontStyle::fsStrikeOut))
-        Result += "text-decoration: line-through; ";
-    Result += "}";
-    return Result;
-}
-
-bool SynHTMLExporter::AttriToCSSCallback(PSyntaxer , PTokenAttribute Attri, const QString& UniqueAttriName, QList<void *> params)
-{
-    QString& styles = *static_cast<QString *>(params[0]);
-    styles.append(AttriToCSS(Attri,UniqueAttriName) + lineBreak());
-    return true;
-}
-
-QString SynHTMLExporter::ColorToHTML(const QColor &AColor)
-{
-    return AColor.name();
-}
-
-QString SynHTMLExporter::GetStyleName(PSyntaxer Highlighter, PTokenAttribute Attri)
-{
-    QString result;
-    enumTokenAttributes(Highlighter,false,
-                          std::bind(
-                              &SynHTMLExporter::StyleNameCallback,this,
-                              std::placeholders::_1, std::placeholders::_2,
-                              std::placeholders::_3, std::placeholders::_4),
-                          {&Attri,&result});
+    if (attri->styles().testFlag(FontStyle::fsBold))
+        result += "font-weight: bold; ";
+    if (attri->styles().testFlag(FontStyle::fsItalic))
+        result += "font-style: italic; ";
+    if (attri->styles().testFlag(FontStyle::fsUnderline))
+        result += "text-decoration: underline; ";
+    if (attri->styles().testFlag(FontStyle::fsStrikeOut))
+        result += "text-decoration: line-through; ";
+    result += "}";
     return result;
 }
 
-QString SynHTMLExporter::MakeValidName(const QString &Name)
+bool HTMLExporter::attriToCSSCallback(PSyntaxer , PTokenAttribute attri, const QString& uniqueAttriName, QList<void *> params)
 {
-    QString Result;
-    for (QChar ch:Name) {
-        ch = ch.toLower();
-        if (ch == '.' || ch =='_')
-            Result += '-';
-        else if ((ch >='a' && ch <= 'z') || (ch>='0' && ch<='9') || (ch == '-'))
-            Result += ch;
-    }
-    return Result;
+    QString& styles = *static_cast<QString *>(params[0]);
+    styles.append(attriToCSS(attri,uniqueAttriName) + lineBreak());
+    return true;
 }
 
-bool SynHTMLExporter::StyleNameCallback(PSyntaxer /*Highlighter*/, PTokenAttribute Attri, const QString& UniqueAttriName, QList<void *> params)
+QString HTMLExporter::colorToHTML(const QColor &color) const
 {
-    PTokenAttribute& AttriToFind = *static_cast<PTokenAttribute*>(params[0]);
-    QString& StyleName = *static_cast<QString *>(params[1]);
+    return color.name();
+}
 
-    if (Attri == AttriToFind) {
-        StyleName.clear();
-        StyleName.append(MakeValidName(UniqueAttriName));
+QString HTMLExporter::getStyleName(PSyntaxer syntaxer, PTokenAttribute attri)
+{
+    QString result;
+    enumTokenAttributes(syntaxer,false,
+                          std::bind(
+                              &HTMLExporter::styleNameCallback,this,
+                              std::placeholders::_1, std::placeholders::_2,
+                              std::placeholders::_3, std::placeholders::_4),
+                          {&attri,&result});
+    return result;
+}
+
+QString HTMLExporter::makeValidName(const QString &name)
+{
+    QString result;
+    for (QChar ch:name) {
+        ch = ch.toLower();
+        if (ch == '.' || ch =='_')
+            result += '-';
+        else if ((ch >='a' && ch <= 'z') || (ch>='0' && ch<='9') || (ch == '-'))
+            result += ch;
+    }
+    return result;
+}
+
+bool HTMLExporter::styleNameCallback(PSyntaxer /*syntaxer*/, PTokenAttribute attri, const QString& uniqueAttriName, QList<void *> params)
+{
+    PTokenAttribute& attriToFind = *static_cast<PTokenAttribute*>(params[0]);
+    QString& styleName = *static_cast<QString *>(params[1]);
+
+    if (attri == attriToFind) {
+        styleName.clear();
+        styleName.append(makeValidName(uniqueAttriName));
         return false;
     }
     return true;
 }
 
-void SynHTMLExporter::FormatAttributeDone(bool , bool , FontStyles )
+void HTMLExporter::formatAttributeDone(bool , bool , FontStyles )
 {
-    AddData("</span>");
+    addData("</span>");
 }
 
-void SynHTMLExporter::FormatAttributeInit(bool , bool , FontStyles )
+void HTMLExporter::formatAttributeInit(bool , bool , FontStyles )
 {
-    QString StyleName = GetStyleName(mSyntaxer, mLastAttri);
-    AddData(QString("<span class=\"%1\">").arg(StyleName));
+    QString styleName = getStyleName(mSyntaxer, mLastAttri);
+    addData(QString("<span class=\"%1\">").arg(styleName));
 }
 
-void SynHTMLExporter::FormatAfterLastAttribute()
+void HTMLExporter::formatAfterLastAttribute()
 {
-    AddData("</span>");
+    addData("</span>");
 }
 
-void SynHTMLExporter::FormatBeforeFirstAttribute(bool, bool, FontStyles)
+void HTMLExporter::formatBeforeFirstAttribute(bool, bool, FontStyles)
 {
-    QString StyleName = GetStyleName(mSyntaxer, mLastAttri);
-    AddData(QString("<span class=\"%1\">").arg(StyleName));
+    QString styleName = getStyleName(mSyntaxer, mLastAttri);
+    addData(QString("<span class=\"%1\">").arg(styleName));
 }
 
-void SynHTMLExporter::FormatNewLine()
+void HTMLExporter::formatNewLine()
 {
-    AddData("<br />");
-    AddNewLine();
+    addData("<br />");
+    addNewLine();
 }
 
-QString SynHTMLExporter::GetFooter()
+QString HTMLExporter::getFooter()
 {
-    QString Result = "";
-    Result = "</span>" + lineBreak();
+    QString result = "";
+    result = "</div>" + lineBreak();
     if (mCreateHTMLFragment)
-        Result += "<!--EndFragment-->";
-    Result += "</body>"+lineBreak()+ "</html>";
-    return Result;
+        result += "<!--EndFragment-->";
+    result += "</body>"+lineBreak()+ "</html>";
+    return result;
 }
 
-QString SynHTMLExporter::GetFormatName()
+QString HTMLExporter::getFormatName()
 {
     return "HTML";
 }
 
-QString SynHTMLExporter::GetHeader()
+QString HTMLExporter::getHeader()
 {
     using namespace std::placeholders;
-    QString Styles;
+    QString styles;
     enumTokenAttributes(mSyntaxer, true,
-                          std::bind(&SynHTMLExporter::AttriToCSSCallback,
+                          std::bind(&HTMLExporter::attriToCSSCallback,
                                     this, _1, _2, _3, _4),
-                          {&Styles});
+                          {&styles});
 
     QString HTMLAsTextHeader = "<?xml version=\"1.0\" encoding=\"%2\"?>"+lineBreak() +
             "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">" + lineBreak() +
@@ -184,12 +184,12 @@ QString SynHTMLExporter::GetHeader()
             "</style>" + lineBreak() +
             "</head>" + lineBreak() +
             "<body>" + lineBreak();
-    QString Header = HTMLAsTextHeader
+    QString header = HTMLAsTextHeader
             .arg(mTitle)
             .arg(QString(mCharset))
-            .arg(ColorToHTML(mForegroundColor))
-            .arg(ColorToHTML(mBackgroundColor))
-            .arg(Styles);
+            .arg(colorToHTML(mForegroundColor))
+            .arg(colorToHTML(mBackgroundColor))
+            .arg(styles);
     if (mCreateHTMLFragment) {
         HTMLAsTextHeader = "<?xml version=\"1.0\" encoding=\"%2\"?>"+lineBreak() +
                     "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">" + lineBreak() +
@@ -205,26 +205,26 @@ QString SynHTMLExporter::GetHeader()
                     "</style>" + lineBreak() +
                     "</head>" + lineBreak() +
                     "<body>" + lineBreak();
-        Header = HTMLAsTextHeader
+        header = HTMLAsTextHeader
                     .arg(QString(mCharset))
-                    .arg(ColorToHTML(mForegroundColor))
-                    .arg(ColorToHTML(mBackgroundColor))
-                    .arg(Styles);
+                    .arg(colorToHTML(mForegroundColor))
+                    .arg(colorToHTML(mBackgroundColor))
+                    .arg(styles);
     }
-    QString Result = Header;
+    QString result = header;
     if (mCreateHTMLFragment) {
-        Result += "<!--StartFragment-->";
+        result += "<!--StartFragment-->";
     }
-    Result += QString("<span style=\"font: %1pt %2;\">")
+    result += QString("<div style=\"font: %1pt %2;\">")
             .arg(pixelToPoint(mFont.pixelSize()))
             .arg(mFont.family());
 
-    return Result;
+    return result;
 }
 
-void SynHTMLExporter::SetTokenAttribute(PTokenAttribute Attri)
+void HTMLExporter::setTokenAttribute(PTokenAttribute attri)
 {
-    mLastAttri = Attri;
-    SynExporter::SetTokenAttribute(Attri);
+    mLastAttri = attri;
+    Exporter::setTokenAttribute(attri);
 }
 }
diff --git a/libs/qsynedit/qsynedit/exporter/htmlexporter.h b/libs/qsynedit/qsynedit/exporter/htmlexporter.h
new file mode 100644
index 00000000..41c86150
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/htmlexporter.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#ifndef HTMLEXPORTER_H
+#define HTMLEXPORTER_H
+
+#include "exporter.h"
+
+namespace QSynedit {
+class HTMLExporter : public Exporter
+{
+public:
+    HTMLExporter(int tabSize,const QByteArray charset);
+    bool createHTMLFragment() const;
+    void setCreateHTMLFragment(bool createHTMLFragment);
+
+protected:
+    bool mCreateHTMLFragment;
+private:
+    PTokenAttribute mLastAttri;
+    QString attriToCSS(PTokenAttribute attri, const QString& uniqueAttriName);
+    bool attriToCSSCallback(PSyntaxer syntaxer, PTokenAttribute attri,
+                            const QString& uniqueAttriName,  QList<void *> params);
+    QString colorToHTML(const QColor &color) const;
+    QString getStyleName(PSyntaxer syntaxer,
+                         PTokenAttribute attri);
+    QString makeValidName(const QString &name);
+    bool styleNameCallback(PSyntaxer syntaxer, PTokenAttribute  attri,
+                           const QString& uniqueAttriName,  QList<void *> params);
+
+    // SynExporter interface
+protected:
+    void formatAttributeDone(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatAttributeInit(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatAfterLastAttribute();
+    void formatBeforeFirstAttribute(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatNewLine();
+    QString getFooter();
+    QString getFormatName();
+    QString getHeader();
+    void setTokenAttribute(PTokenAttribute Attri);
+};
+}
+#endif // HTMLEXPORTER_H
diff --git a/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.cpp b/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.cpp
new file mode 100644
index 00000000..2c8adf2f
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.cpp
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "qtsupportedhtmlexporter.h"
+#include "../MiscProcs.h"
+#include <functional>
+
+namespace QSynedit {
+
+QtSupportedHtmlExporter::QtSupportedHtmlExporter(int tabSize,const QByteArray charset):
+    Exporter(tabSize,charset)
+{
+    mClipboardFormat = "text/html";
+    mDefaultFilter = "HTML Documents (*.htm;*.html)|*.htm;*.html";
+    // setup array of chars to be replaced
+    mReplaceReserved['&'] = "&amp;";
+    mReplaceReserved['<'] = "&lt;";
+    mReplaceReserved['>'] = "&gt;";
+    mReplaceReserved['"'] = "&quot;";
+    mReplaceReserved[' '] = "&nbsp;";
+    mReplaceReserved['\t'] = mReplaceReserved[' '].repeated(tabSize);
+    mCreateHTMLFragment = false;
+}
+
+bool QtSupportedHtmlExporter::createHTMLFragment() const
+{
+    return mCreateHTMLFragment;
+}
+
+void QtSupportedHtmlExporter::setCreateHTMLFragment(bool createHTMLFragment)
+{
+    mCreateHTMLFragment = createHTMLFragment;
+}
+
+QString QtSupportedHtmlExporter::attriToCSS(PTokenAttribute attri)
+{
+    QString result;
+    if (mUseBackground && attri->background().isValid())
+        result += "background-color: " + colorToHTML(attri->background()) + "; ";
+    if (attri->foreground().isValid())
+        result += "color: " + colorToHTML(attri->foreground()) + "; ";
+
+    if (attri->styles().testFlag(FontStyle::fsBold))
+        result += "font-weight: bold; ";
+    if (attri->styles().testFlag(FontStyle::fsItalic))
+        result += "font-style: italic; ";
+    if (attri->styles().testFlag(FontStyle::fsUnderline))
+        result += "text-decoration: underline; ";
+    if (attri->styles().testFlag(FontStyle::fsStrikeOut))
+        result += "text-decoration: line-through; ";
+    return result;
+}
+
+QString QtSupportedHtmlExporter::colorToHTML(const QColor &color)
+{
+    return color.name();
+}
+
+void QtSupportedHtmlExporter::formatAttributeDone(bool , bool , FontStyles )
+{
+    addData("</span>");
+}
+
+void QtSupportedHtmlExporter::formatAttributeInit(bool , bool , FontStyles )
+{
+    addData(QString("<span style=\"%1\">").arg(attriToCSS(mLastAttri)));
+}
+
+void QtSupportedHtmlExporter::formatAfterLastAttribute()
+{
+    addData("</span>");
+}
+
+void QtSupportedHtmlExporter::formatBeforeFirstAttribute(bool, bool, FontStyles)
+{
+    addData(QString("<span style=\"%1\">").arg(attriToCSS(mLastAttri)));
+}
+
+void QtSupportedHtmlExporter::formatNewLine()
+{
+    addData("<br />");
+    addNewLine();
+}
+
+QString QtSupportedHtmlExporter::getFooter()
+{
+    QString result = "";
+    result = "</div>" + lineBreak();
+    if (mCreateHTMLFragment)
+        result += "<!--EndFragment-->";
+    result += "</body>"+lineBreak()+ "</html>";
+    return result;
+}
+
+QString QtSupportedHtmlExporter::getFormatName()
+{
+    return "HTML";
+}
+
+QString QtSupportedHtmlExporter::getHeader()
+{
+    using namespace std::placeholders;
+    QString styles;
+
+
+    QString HTMLAsTextHeader = "<?xml version=\"1.0\" encoding=\"%2\"?>"+lineBreak() +
+            "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">" + lineBreak() +
+            "<html xmlns=\"http://www.w3.org/1999/xhtml\">" + lineBreak() +
+            "<head>"+ lineBreak() +
+            "<title>%1</title>" + lineBreak() +
+            "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=%2\" />" + lineBreak() +
+            "<meta name=\"generator\" content=\"QSynEdit HTML exporter\" />" + lineBreak() +
+            "</head>" + lineBreak() +
+            "<body>" + lineBreak();
+    QString header = HTMLAsTextHeader
+            .arg(mTitle)
+            .arg(QString(mCharset));
+    if (mCreateHTMLFragment) {
+        HTMLAsTextHeader = "<?xml version=\"1.0\" encoding=\"%2\"?>"+lineBreak() +
+                    "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">" + lineBreak() +
+                    "<html xmlns=\"http://www.w3.org/1999/xhtml\">" + lineBreak() +
+                    "<head>"+ lineBreak() +
+                    "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=%1\" />" + lineBreak() +
+                    "<meta name=\"generator\" content=\"QSynEdit HTML exporter\" />" + lineBreak() +
+                    "</head>" + lineBreak() +
+                    "<body>" + lineBreak();
+        header = HTMLAsTextHeader
+                    .arg(QString(mCharset));
+    }
+    QString result = header;
+    if (mCreateHTMLFragment) {
+        result += "<!--StartFragment-->"+lineBreak();
+    }
+    if (mUseBackground) {
+        result += QString("<div style=\"color: %1; background-color: %2; font: %3pt %4;\">")
+            .arg(colorToHTML(mForegroundColor))
+            .arg(colorToHTML(mBackgroundColor))
+            .arg(pixelToPoint(mFont.pixelSize()))
+            .arg(mFont.family())+lineBreak();
+    } else {
+        result += QString("<div style=\"color: %1; font: %2pt %3;\">")
+            .arg(colorToHTML(mForegroundColor))
+            .arg(pixelToPoint(mFont.pixelSize()))
+            .arg(mFont.family())+lineBreak();
+    }
+
+    return result;
+}
+
+void QtSupportedHtmlExporter::setTokenAttribute(PTokenAttribute Attri)
+{
+    mLastAttri = Attri;
+    Exporter::setTokenAttribute(Attri);
+}
+}
diff --git a/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.h b/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.h
new file mode 100644
index 00000000..6f5bfd0e
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/qtsupportedhtmlexporter.h
@@ -0,0 +1,34 @@
+#ifndef QTSUPPORTEDHTMLEXPORTER_H
+#define QTSUPPORTEDHTMLEXPORTER_H
+
+#include "exporter.h"
+
+namespace QSynedit {
+class QtSupportedHtmlExporter : public Exporter
+{
+public:
+    QtSupportedHtmlExporter(int tabSize,const QByteArray charset);
+    bool createHTMLFragment() const;
+    void setCreateHTMLFragment(bool createHTMLFragment);
+
+protected:
+    bool mCreateHTMLFragment;
+private:
+    PTokenAttribute mLastAttri;
+    QString attriToCSS(PTokenAttribute attri);
+    QString colorToHTML(const QColor &color);
+
+    // SynExporter interface
+protected:
+    void formatAttributeDone(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatAttributeInit(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatAfterLastAttribute();
+    void formatBeforeFirstAttribute(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles);
+    void formatNewLine();
+    QString getFooter();
+    QString getFormatName();
+    QString getHeader();
+    void setTokenAttribute(PTokenAttribute Attri);
+};
+}
+#endif // QTSUPPORTEDHTMLEXPORTER_H
diff --git a/libs/qsynedit/qsynedit/exporter/rtfexporter.cpp b/libs/qsynedit/qsynedit/exporter/rtfexporter.cpp
new file mode 100644
index 00000000..91aa1bc0
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/rtfexporter.cpp
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "rtfexporter.h"
+namespace QSynedit {
+
+RTFExporter::RTFExporter(int tabSize, const QByteArray charset):Exporter(tabSize,charset)
+{
+    mDefaultFilter = "Rich Text Format Documents (*.rtf)|*.rtf";
+    mClipboardFormat = "application/x-qt-windows-mime;value=\"Rich Format Text\"";
+    //mClipboardFormat = "Rich Format Text";
+    // setup array of chars to be replaced
+    mReplaceReserved['\\'] = "\\\\";
+    mReplaceReserved['{'] = "\\{";
+    mReplaceReserved['}'] = "\\}";
+    mReplaceReserved['\t'] = "\\tab";
+
+}
+
+QString RTFExporter::colorToRTF(const QColor &color) const
+{
+    return QString("\\red%1\\green%2\\blue%3;")
+            .arg(color.red())
+            .arg(color.green())
+            .arg(color.blue());
+}
+
+int RTFExporter::getColorIndex(const QColor &color)
+{
+    int index = mListColors.indexOf(color);
+    if (index<0) {
+        mListColors.append(color);
+        index = mListColors.length()-1;
+    }
+    return index;
+}
+
+QString RTFExporter::getFontTable()
+{
+    QString result = "{\\fonttbl{\\f0\\fmodern\\fcharset134 "
+        + replaceReservedChars(mFont.family());
+    result = result + ";}}" + lineBreak();
+    return result;
+}
+
+void RTFExporter::formatAttributeDone(bool , bool , FontStyles fontStyles)
+{
+    // nothing to do about the color, but reset the font style
+    if (fontStyles.testFlag(FontStyle::fsBold)) {
+        mAttributesChanged = true;
+        addData("\\b0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsItalic)) {
+        mAttributesChanged = true;
+        addData("\\i0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsUnderline)) {
+        mAttributesChanged = true;
+        addData("\\ul0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsStrikeOut)) {
+        mAttributesChanged = true;
+        addData("\\strike0");
+    }
+}
+
+void RTFExporter::formatAttributeInit(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles)
+{
+    // background color
+    if (backgroundChanged) {
+        addData(QString("\\chshdng0\\chcbpat%1\\cb%2\\highlight%3 ")
+              .arg(getColorIndex(mLastBG))
+              .arg(getColorIndex(mLastBG))
+              .arg(getColorIndex(mLastBG)));
+        mAttributesChanged = true;
+    }
+    // text color
+    if (foregroundChanged) {
+        addData(QString("\\cf%1").arg(getColorIndex(mLastFG)));
+        mAttributesChanged = true;
+    }
+    // font styles
+    // nothing to do about the color, but reset the font style
+    if (fontStyles.testFlag(FontStyle::fsBold)) {
+        mAttributesChanged = true;
+        addData("\\b0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsItalic)) {
+        mAttributesChanged = true;
+        addData("\\i0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsUnderline)) {
+        mAttributesChanged = true;
+        addData("\\ul0");
+    }
+    if (fontStyles.testFlag(FontStyle::fsStrikeOut)) {
+        mAttributesChanged = true;
+        addData("\\strike0");
+    }
+    if (mAttributesChanged) {
+        addData(" ");
+        mAttributesChanged = false;
+    }
+}
+
+void RTFExporter::formatAfterLastAttribute()
+{
+    // no need to reset the font style here...
+}
+
+void RTFExporter::formatBeforeFirstAttribute(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles)
+{
+    formatAttributeInit(backgroundChanged, foregroundChanged, fontStyles);
+}
+
+void RTFExporter::formatNewLine()
+{
+    addNewLine();
+    addData("\\par ");
+}
+
+QString RTFExporter::getFooter()
+{
+    return "}";
+}
+
+QString RTFExporter::getFormatName()
+{
+    return "RTF";
+}
+
+QString RTFExporter::getHeader()
+{
+    QFontMetrics fm(mFont);
+    int tabWidth = mTabSize * fm.horizontalAdvance("M")*72*20/fm.fontDpi();
+
+    QString result = QString("{\\rtf1\\ansi\\deff0\\deftab%1").arg(tabWidth) + getFontTable();
+    // all the colors
+    result = result + "{\\colortbl";
+    for (int i = 0; i<mListColors.count();i++) {
+        result = result + colorToRTF(mListColors[i]);
+    }
+    result = result + colorToRTF(mBackgroundColor);
+    result = result + "}" + lineBreak();
+    // title and creator comment
+    result = result + "{\\info{\\comment Generated by the QSynEdit RTF " +
+        "exporter}" + lineBreak();
+    result = result + "{\\title " + mTitle + "}}" + lineBreak();
+//    if (mUseBackground)
+//        Result = Result + { TODO } #13#10;
+    result = result + QString("\\deflang1033\\pard\\plain\\f0\\fs%1 ").arg((int)(2 * pixelToPoint(mFont.pixelSize())));
+    if (mUseBackground)
+        result = result + QString("\\chshdng0\\chcbpat%1\\cb%2\\highlight%3 ")
+                .arg(getColorIndex(mLastBG))
+                .arg(getColorIndex(mBackgroundColor))
+                .arg(getColorIndex(mBackgroundColor));
+    return result;
+}
+}
diff --git a/libs/qsynedit/qsynedit/exporter/rtfexporter.h b/libs/qsynedit/qsynedit/exporter/rtfexporter.h
new file mode 100644
index 00000000..ab3d60c3
--- /dev/null
+++ b/libs/qsynedit/qsynedit/exporter/rtfexporter.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#ifndef RTFEXPORTER_H
+#define RTFEXPORTER_H
+
+#include "exporter.h"
+
+namespace QSynedit {
+
+class RTFExporter : public Exporter
+{
+public:
+    explicit RTFExporter(int tabSize,const QByteArray charset);
+private:
+    bool mAttributesChanged;
+    QList<QColor> mListColors;
+    QString colorToRTF(const QColor& AColor) const;
+    int getColorIndex(const QColor& AColor);
+    QString getFontTable();
+
+    // SynExporter interface
+protected:
+    void formatAttributeDone(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles) override;
+    void formatAttributeInit(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles) override;
+    void formatAfterLastAttribute() override;
+    void formatBeforeFirstAttribute(bool backgroundChanged, bool foregroundChanged, FontStyles fontStyles) override;
+    void formatNewLine() override;
+    QString getFooter() override;
+    QString getFormatName() override;
+    QString getHeader() override;
+};
+
+}
+#endif // RTFEXPORTER_H
diff --git a/libs/qsynedit/qsynedit/exporter/synexporter.cpp b/libs/qsynedit/qsynedit/exporter/synexporter.cpp
deleted file mode 100644
index eb13d9b3..00000000
--- a/libs/qsynedit/qsynedit/exporter/synexporter.cpp
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-#include "synexporter.h"
-
-#include <QClipboard>
-#include <QFile>
-#include <QGuiApplication>
-#include <QMimeData>
-#include <QTextCodec>
-
-namespace QSynedit {
-
-SynExporter::SynExporter(const QByteArray charset):mCharset(charset)
-{
-    mClipboardFormat = "text/plain";
-    mFont = QGuiApplication::font();
-    mBackgroundColor = QGuiApplication::palette().color(QPalette::Base);
-    mForegroundColor = QGuiApplication::palette().color(QPalette::Text);
-    mUseBackground = false;
-    mExportAsText = false;
-    mFileEndingType = NewlineType::Windows;
-    clear();
-    setTitle("");
-}
-
-void SynExporter::clear()
-{
-    mBuffer.clear();
-    mLastStyle = FontStyle::fsNone;
-    mLastBG = QGuiApplication::palette().color(QPalette::Base);
-    mLastFG = QGuiApplication::palette().color(QPalette::Text);
-}
-
-void SynExporter::CopyToClipboard()
-{
-    if (mExportAsText) {
-        CopyToClipboardFormat("text/plain");
-    } else
-        CopyToClipboardFormat(clipboardFormat());
-}
-
-void SynExporter::ExportAll(PDocument ALines)
-{
-    ExportRange(ALines, BufferCoord{1, 1}, BufferCoord{INT_MAX, INT_MAX});
-}
-
-void SynExporter::ExportRange(PDocument ALines, BufferCoord Start, BufferCoord Stop)
-{
-    // abort if not all necessary conditions are met
-    if (!ALines || !mSyntaxer || (ALines->count() == 0))
-        return;
-    Stop.line = std::max(1, std::min(Stop.line, ALines->count()));
-    Stop.ch = std::max(1, std::min(Stop.ch, ALines->getString(Stop.line - 1).length() + 1));
-    Start.line = std::max(1, std::min(Start.line, ALines->count()));
-    Start.ch = std::max(1, std::min(Start.ch, ALines->getString(Start.line - 1).length() + 1));
-    if ( (Start.line > ALines->count()) || (Start.line > Stop.line) )
-        return;
-    if ((Start.line == Stop.line) && (Start.ch >= Stop.ch))
-        return;
-    // initialization
-    mBuffer.clear();
-    // export all the lines into fBuffer
-    mFirstAttribute = true;
-
-    if (Start.line == 1)
-        mSyntaxer->resetState();
-    else
-        mSyntaxer->setState(ALines->ranges(Start.line-2));
-    for (int i = Start.line; i<=Stop.line; i++) {
-        QString Line = ALines->getString(i-1);
-        // order is important, since Start.Y might be equal to Stop.Y
-//        if (i == Stop.Line)
-//            Line.remove(Stop.Char-1, INT_MAX);
-//        if ( (i = Start.Line) && (Start.Char > 1))
-//            Line.remove(0, Start.Char - 1);
-        // export the line
-        mSyntaxer->setLine(Line, i);
-        while (!mSyntaxer->eol()) {
-            PTokenAttribute attri = mSyntaxer->getTokenAttribute();
-            int startPos = mSyntaxer->getTokenPos();
-            QString token = mSyntaxer->getToken();
-            if (i==Start.line && (startPos+token.length() < Start.ch)) {
-                mSyntaxer->next();
-                continue;
-            }
-            if (i==Stop.line && (startPos >= Stop.ch-1)) {
-                mSyntaxer->next();
-                continue;
-            }
-            if (i==Stop.line && (startPos+token.length() > Stop.ch)) {
-                token = token.remove(Stop.ch - startPos - 1);
-            }
-            if (i==Start.line && startPos < Start.ch-1) {
-                token = token.mid(Start.ch-1-startPos);
-            }
-
-            QString Token = ReplaceReservedChars(token);
-            if (mOnFormatToken)
-                mOnFormatToken(mSyntaxer, i, mSyntaxer->getTokenPos()+1, mSyntaxer->getToken(),attri);
-            SetTokenAttribute(attri);
-            FormatToken(Token);
-            mSyntaxer->next();
-        }
-        if (i!=Stop.line)
-            FormatNewLine();
-    }
-    if (!mFirstAttribute)
-        FormatAfterLastAttribute();
-    // insert header
-    InsertData(0, GetHeader());
-    // add footer
-    AddData(GetFooter());
-}
-
-void SynExporter::SaveToFile(const QString &AFileName)
-{
-    QFile file(AFileName);
-    if (file.open(QIODevice::WriteOnly)) {
-        SaveToStream(file);
-    } else {
-        throw FileError(QObject::tr("Can't open file '%1' to write!").arg(AFileName));
-    }
-}
-
-void SynExporter::SaveToStream(QIODevice &AStream)
-{
-    if (AStream.write(mBuffer)<0) {
-        throw FileError(QObject::tr("Failed to write data."));
-    }
-}
-
-bool SynExporter::exportAsText() const
-{
-    return mExportAsText;
-}
-
-void SynExporter::setExportAsText(bool Value)
-{
-    if (mExportAsText != Value) {
-        mExportAsText = Value;
-        clear();
-    }
-}
-
-QFont SynExporter::font() const
-{
-    return mFont;
-}
-
-void SynExporter::setFont(const QFont &font)
-{
-    mFont = font;
-}
-
-PSyntaxer SynExporter::syntaxer() const
-{
-    return mSyntaxer;
-}
-
-void SynExporter::setSyntaxer(PSyntaxer value)
-{
-    if (mSyntaxer != value) {
-        mSyntaxer = value;
-        clear();
-        if ((mSyntaxer) && (mSyntaxer->whitespaceAttribute()) && mUseBackground)
-            mBackgroundColor = mSyntaxer->whitespaceAttribute()->background();
-    }
-}
-
-QString SynExporter::title() const
-{
-    return mTitle;
-}
-
-void SynExporter::setTitle(const QString &Value)
-{
-    if (mTitle != Value) {
-      if (!Value.isEmpty())
-          mTitle = Value;
-      else
-          mTitle = "Untitled";
-    }
-}
-
-bool SynExporter::useBackground() const
-{
-    return mUseBackground;
-}
-
-void SynExporter::setUseBackground(bool Value)
-{
-    if (mUseBackground != Value) {
-        mUseBackground = Value;
-        clear();
-        if ((mSyntaxer) && (mSyntaxer->whitespaceAttribute()) && mUseBackground)
-            mBackgroundColor = mSyntaxer->whitespaceAttribute()->background();
-    }
-}
-
-NewlineType SynExporter::fileEndingType() const
-{
-    return mFileEndingType;
-}
-
-void SynExporter::setFileEndingType(const NewlineType &fileEndingType)
-{
-    mFileEndingType = fileEndingType;
-}
-
-QColor SynExporter::foregroundColor() const
-{
-    return mForegroundColor;
-}
-
-void SynExporter::setForegroundColor(const QColor &value)
-{
-    if (mForegroundColor != value) {
-        mForegroundColor = value;
-    }
-}
-
-QColor SynExporter::backgroundColor() const
-{
-    return mBackgroundColor;
-}
-
-void SynExporter::setBackgroundColor(const QColor &value)
-{
-    if (mBackgroundColor != value) {
-        mBackgroundColor = value;
-    }
-}
-
-QByteArray SynExporter::charset() const
-{
-    return mCharset;
-}
-
-void SynExporter::setCharset(const QByteArray &charset)
-{
-    mCharset = charset;
-}
-
-QString SynExporter::defaultFilter() const
-{
-    return mDefaultFilter;
-}
-
-void SynExporter::setDefaultFilter(const QString &defaultFilter)
-{
-    mDefaultFilter = defaultFilter;
-}
-
-void SynExporter::AddData(const QString &AText)
-{
-    if (!AText.isEmpty()) {
-        QTextCodec* codec = getCodec();
-        mBuffer.append(codec->fromUnicode(AText));
-    }
-}
-
-void SynExporter::AddDataNewLine(const QString &AText)
-{
-    AddData(AText);
-    AddNewLine();
-}
-
-void SynExporter::AddNewLine()
-{
-    AddData(lineBreak());
-}
-
-void SynExporter::CopyToClipboardFormat(QByteArray AFormat)
-{
-    QClipboard* clipboard = QGuiApplication::clipboard();
-    QMimeData * mimeData = new QMimeData();
-    mimeData->setData(AFormat,mBuffer);
-    clipboard->clear();
-    clipboard->setMimeData(mimeData);
-}
-
-void SynExporter::FormatToken(const QString &Token)
-{
-    AddData(Token);
-}
-
-int SynExporter::GetBufferSize()
-{
-    return mBuffer.size();
-}
-
-QTextCodec * SynExporter::getCodec() {
-    QTextCodec* codec = QTextCodec::codecForName(mCharset);
-    if (codec == nullptr)
-        codec = QTextCodec::codecForLocale();
-    return codec;
-}
-void SynExporter::InsertData(int APos, const QString &AText)
-{
-    if (!AText.isEmpty()) {
-        QTextCodec* codec = getCodec();
-        mBuffer.insert(APos,codec->fromUnicode(AText));
-    }
-}
-
-QString SynExporter::ReplaceReservedChars(const QString &AToken)
-{
-    if (AToken.isEmpty())
-        return "";
-    QString result;
-    for (QChar ch:AToken) {
-        if (mReplaceReserved.contains(ch)) {
-            result += mReplaceReserved[ch];
-        } else {
-            result += ch;
-        }
-    }
-    return result;
-}
-
-static QColor ValidatedColor(const QColor& color, const QColor& defaultColor) {
-    if (color.isValid())
-        return color;
-    else
-        return defaultColor;
-}
-void SynExporter::SetTokenAttribute(PTokenAttribute Attri)
-{
-    if (mFirstAttribute) {
-        mFirstAttribute = false;
-        mLastBG = ValidatedColor(Attri->background(), mBackgroundColor);
-        mLastFG = ValidatedColor(Attri->foreground(), mForegroundColor);
-        mLastStyle = Attri->styles();
-        FormatBeforeFirstAttribute(
-                    mUseBackground && (mLastBG != mBackgroundColor),
-                    mLastFG != mForegroundColor, Attri->styles());
-    } else {
-        bool ChangedBG = mUseBackground &&
-          (mLastBG != ValidatedColor(Attri->background(), mBackgroundColor));
-        bool ChangedFG = (mLastFG != ValidatedColor(Attri->foreground(), mForegroundColor));
-        if (ChangedBG || ChangedFG ||  (mLastStyle != Attri->styles())) {
-            // which font style bits are to reset?
-            FontStyles ChangedStyles = mLastStyle & ~(Attri->styles());
-            FormatAttributeDone(ChangedBG, ChangedFG, ChangedStyles);
-            // which font style bits are to set?
-            ChangedStyles = Attri->styles() & ~(mLastStyle);
-            mLastBG = ValidatedColor(Attri->background(), mBackgroundColor);
-            mLastFG = ValidatedColor(Attri->foreground(), mForegroundColor);
-            mLastStyle = Attri->styles();
-            FormatAttributeInit(ChangedBG, ChangedFG, ChangedStyles);
-        }
-    }
-}
-
-const QByteArray &SynExporter::buffer() const
-{
-    return mBuffer;
-}
-
-QByteArray SynExporter::clipboardFormat()
-{
-    return this->mClipboardFormat;
-}
-
-FormatTokenHandler SynExporter::onFormatToken() const
-{
-    return mOnFormatToken;
-}
-
-void SynExporter::setOnFormatToken(const FormatTokenHandler &onFormatToken)
-{
-    mOnFormatToken = onFormatToken;
-}
-
-QString SynExporter::lineBreak()
-{
-    switch(mFileEndingType) {
-    case NewlineType::Unix:
-        return "\n";
-    case NewlineType::Windows:
-        return "\r\n";
-    case NewlineType::MacOld:
-        return "\r";
-    }
-    return "\n";
-}
-
-}
diff --git a/libs/qsynedit/qsynedit/exporter/synhtmlexporter.h b/libs/qsynedit/qsynedit/exporter/synhtmlexporter.h
deleted file mode 100644
index 1439914c..00000000
--- a/libs/qsynedit/qsynedit/exporter/synhtmlexporter.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-#ifndef SYNHTMLEXPORTER_H
-#define SYNHTMLEXPORTER_H
-
-#include "synexporter.h"
-
-namespace QSynedit {
-class SynHTMLExporter : public SynExporter
-{
-public:
-    SynHTMLExporter(int tabSize,const QByteArray charset);
-    bool createHTMLFragment() const;
-    void setCreateHTMLFragment(bool createHTMLFragment);
-
-protected:
-    bool mCreateHTMLFragment;
-private:
-    PTokenAttribute mLastAttri;
-    QString AttriToCSS(PTokenAttribute Attri, const QString& UniqueAttriName);
-    bool AttriToCSSCallback(PSyntaxer Highlighter, PTokenAttribute  Attri,
-                            const QString& UniqueAttriName,  QList<void *> params);
-    QString ColorToHTML(const QColor &AColor);
-    QString GetStyleName(PSyntaxer Highlighter,
-                         PTokenAttribute Attri);
-    QString MakeValidName(const QString &Name);
-    bool StyleNameCallback(PSyntaxer Highlighter, PTokenAttribute  Attri,
-                           const QString& UniqueAttriName,  QList<void *> params);
-
-    // SynExporter interface
-protected:
-    void FormatAttributeDone(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged);
-    void FormatAttributeInit(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged);
-    void FormatAfterLastAttribute();
-    void FormatBeforeFirstAttribute(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged);
-    void FormatNewLine();
-    QString GetFooter();
-    QString GetFormatName();
-    QString GetHeader();
-    void SetTokenAttribute(PTokenAttribute Attri);
-};
-}
-#endif // SYNHTMLEXPORTER_H
diff --git a/libs/qsynedit/qsynedit/exporter/synrtfexporter.cpp b/libs/qsynedit/qsynedit/exporter/synrtfexporter.cpp
deleted file mode 100644
index aa75940e..00000000
--- a/libs/qsynedit/qsynedit/exporter/synrtfexporter.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-#include "synrtfexporter.h"
-namespace QSynedit {
-
-SynRTFExporter::SynRTFExporter(const QByteArray charset):SynExporter(charset)
-{
-    mDefaultFilter = "Rich Text Format Documents (*.rtf)|*.rtf";
-    mClipboardFormat = "application/x-qt-windows-mime;value=\"Rich Format Text\"";
-    //mClipboardFormat = "Rich Format Text";
-    // setup array of chars to be replaced
-    mReplaceReserved['\\'] = "\\\\";
-    mReplaceReserved['{'] = "\\{";
-    mReplaceReserved['}'] = "\\}";
-
-}
-
-QString SynRTFExporter::ColorToRTF(const QColor &AColor) const
-{
-    return QString("\\red%1\\green%2\\blue%3;")
-            .arg(AColor.red())
-            .arg(AColor.green())
-            .arg(AColor.blue());
-}
-
-int SynRTFExporter::GetColorIndex(const QColor &AColor)
-{
-    int index = mListColors.indexOf(AColor);
-    if (index<0) {
-        mListColors.append(AColor);
-        index = mListColors.length()-1;
-    }
-    return index;
-}
-
-QString SynRTFExporter::GetFontTable()
-{
-    QString Result = "{\\fonttbl{\\f0\\fmodern\\fcharset134 "
-        + ReplaceReservedChars(mFont.family());
-    Result = Result + ";}}" + lineBreak();
-    return Result;
-}
-
-void SynRTFExporter::FormatAttributeDone(bool , bool , FontStyles FontStylesChanged)
-{
-    // nothing to do about the color, but reset the font style
-    if (FontStylesChanged.testFlag(FontStyle::fsBold)) {
-        mAttributesChanged = true;
-        AddData("\\b0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsItalic)) {
-        mAttributesChanged = true;
-        AddData("\\i0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsUnderline)) {
-        mAttributesChanged = true;
-        AddData("\\ul0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsStrikeOut)) {
-        mAttributesChanged = true;
-        AddData("\\strike0");
-    }
-}
-
-void SynRTFExporter::FormatAttributeInit(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged)
-{
-    // background color
-    if (BackgroundChanged) {
-        AddData(QString("\\chshdng0\\chcbpat%1\\cb%2\\highlight%3 ")
-              .arg(GetColorIndex(mLastBG))
-              .arg(GetColorIndex(mLastBG))
-              .arg(GetColorIndex(mLastBG)));
-        mAttributesChanged = true;
-    }
-    // text color
-    if (ForegroundChanged) {
-        AddData(QString("\\cf%1").arg(GetColorIndex(mLastFG)));
-        mAttributesChanged = true;
-    }
-    // font styles
-    // nothing to do about the color, but reset the font style
-    if (FontStylesChanged.testFlag(FontStyle::fsBold)) {
-        mAttributesChanged = true;
-        AddData("\\b0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsItalic)) {
-        mAttributesChanged = true;
-        AddData("\\i0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsUnderline)) {
-        mAttributesChanged = true;
-        AddData("\\ul0");
-    }
-    if (FontStylesChanged.testFlag(FontStyle::fsStrikeOut)) {
-        mAttributesChanged = true;
-        AddData("\\strike0");
-    }
-    if (mAttributesChanged) {
-        AddData(" ");
-        mAttributesChanged = false;
-    }
-}
-
-void SynRTFExporter::FormatAfterLastAttribute()
-{
-    // no need to reset the font style here...
-}
-
-void SynRTFExporter::FormatBeforeFirstAttribute(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged)
-{
-    FormatAttributeInit(BackgroundChanged, ForegroundChanged, FontStylesChanged);
-}
-
-void SynRTFExporter::FormatNewLine()
-{
-    AddNewLine();
-    AddData("\\par ");
-}
-
-QString SynRTFExporter::GetFooter()
-{
-    return "}";
-}
-
-QString SynRTFExporter::GetFormatName()
-{
-    return "RTF";
-}
-
-QString SynRTFExporter::GetHeader()
-{
-    QString Result = "{\\rtf1\\ansi\\deff0\\deftab720" + GetFontTable();
-    // all the colors
-    Result = Result + "{\\colortbl";
-    for (int i = 0; i<mListColors.count();i++) {
-        Result = Result + ColorToRTF(mListColors[i]);
-    }
-    Result = Result + ColorToRTF(mBackgroundColor);
-    Result = Result + "}" + lineBreak();
-    // title and creator comment
-    Result = Result + "{\\info{\\comment Generated by the QSynEdit RTF " +
-        "exporter}" + lineBreak();
-    Result = Result + "{\\title " + mTitle + "}}" + lineBreak();
-//    if (mUseBackground)
-//        Result = Result + { TODO } #13#10;
-    Result = Result + QString("\\deflang1033\\pard\\plain\\f0\\fs%1 ").arg((int)(2 * pixelToPoint(mFont.pixelSize())));
-    if (mUseBackground)
-        Result = Result + QString("\\chshdng0\\chcbpat%1\\cb%2\\highlight%3 ")
-                .arg(GetColorIndex(mLastBG))
-                .arg(GetColorIndex(mBackgroundColor))
-                .arg(GetColorIndex(mBackgroundColor));
-    return Result;
-}
-}
diff --git a/libs/qsynedit/qsynedit/exporter/synrtfexporter.h b/libs/qsynedit/qsynedit/exporter/synrtfexporter.h
deleted file mode 100644
index 46026554..00000000
--- a/libs/qsynedit/qsynedit/exporter/synrtfexporter.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-#ifndef SYNRTFEXPORTER_H
-#define SYNRTFEXPORTER_H
-
-#include "synexporter.h"
-
-namespace QSynedit {
-
-class SynRTFExporter : public SynExporter
-{
-public:
-    explicit SynRTFExporter(const QByteArray charset);
-private:
-    bool mAttributesChanged;
-    QList<QColor> mListColors;
-    QString ColorToRTF(const QColor& AColor) const;
-    int GetColorIndex(const QColor& AColor);
-    QString GetFontTable();
-
-    // SynExporter interface
-protected:
-    void FormatAttributeDone(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged) override;
-    void FormatAttributeInit(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged) override;
-    void FormatAfterLastAttribute() override;
-    void FormatBeforeFirstAttribute(bool BackgroundChanged, bool ForegroundChanged, FontStyles FontStylesChanged) override;
-    void FormatNewLine() override;
-    QString GetFooter() override;
-    QString GetFormatName() override;
-    QString GetHeader() override;
-};
-
-}
-#endif // SYNRTFEXPORTER_H