diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index 6d841f13..e0cfd9b6 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -287,7 +287,6 @@ void Editor::loadFile(QString filename) {
         checkSyntaxInBack();
     }
     reparseTodo();
-
     saveAutoBackup();
 }
 
@@ -1041,11 +1040,12 @@ void Editor::keyPressEvent(QKeyEvent *event)
             return;
         case '(': {
             if (!selAvail()) {
-                QChar nextCh = nextNonSpaceChar(caretY()-1,caretX()-1);
-                if (!isIdentChar(nextCh) && nextCh!='('
-                        && nextCh!='"' && nextCh!='\'' ){
-                    handled = handleSymbolCompletion(ch);
-                }
+                // QChar nextCh = nextNonSpaceChar(caretY()-1,caretX()-1);
+                // if (!isIdentChar(nextCh) && nextCh!='('
+                //         && nextCh!='"' && nextCh!='\'' ){
+                //     handled = handleSymbolCompletion(ch);
+                // }
+                handled = handleSymbolCompletion(ch);
             } else {
                 handled = handleSymbolCompletion(ch);
             }
@@ -3513,6 +3513,57 @@ void Editor::showCompletion(const QString& preWord,bool autoComplete, CodeComple
         }
     }
 
+    // Scan the current function body
+    QSet<QString> keywords;
+
+    if (syntaxer()->language() != QSynedit::ProgrammingLanguage::CPP ) {
+        if (syntaxer()->language()==QSynedit::ProgrammingLanguage::ATTAssembly) {
+            if (word.startsWith("."))
+                keywords = QSynedit::ASMSyntaxer::ATTDirectives;
+            else if (word.startsWith("%"))
+                keywords = QSynedit::ASMSyntaxer::ATTRegisters;
+            else {
+                keywords = QSynedit::ASMSyntaxer::InstructionNames;
+            }
+        } else {
+            int pos = word.lastIndexOf(".");
+            if (pos>=0) {
+                QString scopeWord=word.left(pos);
+                word = word.mid(pos+1);
+                QMap<QString, QSet<QString> > scopedKeywords = syntaxer()->scopedKeywords();
+                keywords = scopedKeywords.value(scopeWord, QSet<QString>());
+            } else
+                keywords = syntaxer()->keywords();
+        }
+    } else {
+        switch(calcParserLanguage()) {
+        case ParserLanguage::CPlusPlus:
+            foreach (const QString& keyword, CppKeywords.keys()) {
+                keywords.insert(keyword);
+            }
+            break;
+        case ParserLanguage::C:
+            keywords = CKeywords;
+            break;
+#ifdef ENABLE_SDCC
+        case ParserLanguage::SDCC:
+            keywords = CKeywords;
+            foreach (const QString& keyword, SDCCKeywords.keys()) {
+                keywords.insert(keyword);
+            }
+            break;
+#endif
+        }
+        if (pSettings->editor().enableCustomCTypeKeywords()) {
+            foreach (const QString& keyword, pSettings->editor().customCTypeKeywords()) {
+                keywords.insert(keyword);
+            }
+        }
+    }
+
+    if (type == CodeCompletionType::KeywordsOnly && keywords.isEmpty())
+        return;
+
     mCompletionPopup->setRecordUsage(pSettings->codeCompletion().recordUsage());
     mCompletionPopup->setSortByScope(pSettings->codeCompletion().sortByScope());
     mCompletionPopup->setShowKeywords(pSettings->codeCompletion().showKeywords());
@@ -3566,54 +3617,6 @@ void Editor::showCompletion(const QString& preWord,bool autoComplete, CodeComple
     }
     pMainWindow->functionTip()->hide();
     mCompletionPopup->show();
-    // Scan the current function body
-    QSet<QString> keywords;
-
-    if (syntaxer()->language() != QSynedit::ProgrammingLanguage::CPP ) {
-        if (syntaxer()->language()==QSynedit::ProgrammingLanguage::ATTAssembly) {
-            if (word.startsWith("."))
-                keywords = QSynedit::ASMSyntaxer::ATTDirectives;
-            else if (word.startsWith("%"))
-                keywords = QSynedit::ASMSyntaxer::ATTRegisters;
-            else {
-                keywords = QSynedit::ASMSyntaxer::InstructionNames;
-            }
-        } else {
-            int pos = word.lastIndexOf(".");
-            if (pos>=0) {
-                QString scopeWord=word.left(pos);
-                word = word.mid(pos+1);
-                QMap<QString, QSet<QString> > scopedKeywords = syntaxer()->scopedKeywords();
-                keywords = scopedKeywords.value(scopeWord, QSet<QString>());
-            } else
-                keywords = syntaxer()->keywords();
-        }
-    } else {
-        switch(calcParserLanguage()) {
-        case ParserLanguage::CPlusPlus:
-            foreach (const QString& keyword, CppKeywords.keys()) {
-                keywords.insert(keyword);
-            }
-            break;
-        case ParserLanguage::C:
-            keywords = CKeywords;
-            break;
-#ifdef ENABLE_SDCC
-        case ParserLanguage::SDCC:
-            keywords = CKeywords;
-            foreach (const QString& keyword, SDCCKeywords.keys()) {
-                keywords.insert(keyword);
-            }
-            break;
-#endif
-        }
-        if (pSettings->editor().enableCustomCTypeKeywords()) {
-            foreach (const QString& keyword, pSettings->editor().customCTypeKeywords()) {
-                keywords.insert(keyword);
-            }
-        }
-    }
-
 
     if (word.isEmpty()) {
         //word=getWordAtPosition(this,caretXY(),pBeginPos,pEndPos, WordPurpose::wpCompletion);
diff --git a/libs/qsynedit/qsynedit/document.h b/libs/qsynedit/qsynedit/document.h
index ec66b126..b0968689 100644
--- a/libs/qsynedit/qsynedit/document.h
+++ b/libs/qsynedit/qsynedit/document.h
@@ -566,7 +566,7 @@ signals:
     void cleared();
     void deleted(int startLine, int count);
     void inserted(int startLine, int count);
-    void putted(int startLine, int count);
+    void putted(int line);
 protected:
     QString getTextStr() const;
     void setUpdateState(bool Updating);
diff --git a/libs/qsynedit/qsynedit/painter.cpp b/libs/qsynedit/qsynedit/painter.cpp
index 62e4e017..f23644c0 100644
--- a/libs/qsynedit/qsynedit/painter.cpp
+++ b/libs/qsynedit/qsynedit/painter.cpp
@@ -970,7 +970,6 @@ void QSynEditPainter::paintLines()
         int lineWidth;
         QList<int> glyphStartCharList = mEdit->mDocument->getGlyphStartCharList(vLine-1,sLine);
         QList<int> glyphStartPositionsList = mEdit->mDocument->getGlyphStartPositionList(vLine-1,sLine, lineWidth);
-        {
         // Initialize highlighter with line text and range info. It is
         // necessary because we probably did not scan to the end of the last
         // line - the internal highlighter range might be wrong.
diff --git a/libs/qsynedit/qsynedit/qsynedit.cpp b/libs/qsynedit/qsynedit/qsynedit.cpp
index 70c3f7b2..a3011d3f 100644
--- a/libs/qsynedit/qsynedit/qsynedit.cpp
+++ b/libs/qsynedit/qsynedit/qsynedit.cpp
@@ -328,7 +328,7 @@ bool QSynEdit::canRedo() const
 int QSynEdit::maxScrollWidth() const
 {
     int maxWidth = mDocument->longestLineWidth();
-    if (mSyntaxer->supportFolding())
+    if (useCodeFolding())
         maxWidth += stringWidth(syntaxer()->foldString(""),maxWidth);
     if (mOptions.testFlag(eoScrollPastEol))
         return std::max(maxWidth ,1);
@@ -3478,7 +3478,7 @@ void QSynEdit::findSubFoldRange(PCodeFoldingRanges topFoldRanges, PCodeFoldingRa
     PCodeFoldingRange  collapsedFold;
     int line = 0;
     QString curLine;
-    if (mSyntaxer->supportFolding())
+    if (!useCodeFolding())
         return;
 
     while (line < mDocument->count()) { // index is valid for LinesToScan and fLines
@@ -6596,18 +6596,18 @@ void QSynEdit::onLinesCleared()
 
 void QSynEdit::onLinesDeleted(int line, int count)
 {
-    if (mUseCodeFolding)
+    if (useCodeFolding())
         foldOnLinesDeleted(line + 1, count);
     if (mSyntaxer->needsLineState()) {
         reparseLines(line, mDocument->count());
     }
     invalidateLines(line + 1, INT_MAX);
-//    invalidateGutterLines(index + 1, INT_MAX);
+    //invalidateGutterLines(line + 1, INT_MAX);
 }
 
 void QSynEdit::onLinesInserted(int line, int count)
 {
-    if (mUseCodeFolding)
+    if (useCodeFolding())
         foldOnLinesInserted(line + 1, count);
     if (mSyntaxer->needsLineState()) {
         reparseLines(line, mDocument->count());
@@ -6616,7 +6616,7 @@ void QSynEdit::onLinesInserted(int line, int count)
         reparseLines(line, line + count);
     }
     invalidateLines(line + 1, INT_MAX);
-//    invalidateGutterLines(index + 1, INT_MAX);
+    //invalidateGutterLines(line + 1, INT_MAX);
 }
 
 void QSynEdit::onLinesPutted(int line)
@@ -6624,9 +6624,11 @@ void QSynEdit::onLinesPutted(int line)
     if (mSyntaxer->needsLineState()) {
         reparseLines(line, mDocument->count());
         invalidateLines(line + 1, INT_MAX);
+        //invalidateGutterLines(line +1 , INT_MAX);
     } else {
         reparseLines(line, line+1);
         invalidateLine( line + 1 );
+        //invalidateGutterLine(line +1);
     }
 }
 
@@ -6711,7 +6713,7 @@ void QSynEdit::setBlockEnd(BufferCoord value)
           value.ch = 1;
     } else {
         int maxLen = mDocument->longestLineWidth();
-        if (mSyntaxer->supportFolding())
+        if (useCodeFolding())
             maxLen += stringWidth(mSyntaxer->foldString(""),maxLen);
         value.ch = minMax(value.ch, 1, maxLen+1);
     }
@@ -6818,7 +6820,7 @@ void QSynEdit::setBlockBegin(BufferCoord value)
             value.ch = 1;
     } else {
         int maxLen = mDocument->longestLineWidth();
-        if (mSyntaxer->supportFolding())
+        if (useCodeFolding())
             maxLen += stringWidth(mSyntaxer->foldString(""),maxLen);
         value.ch = minMax(value.ch, 1, maxLen+1);
     }
diff --git a/libs/qsynedit/qsynedit/qsynedit.h b/libs/qsynedit/qsynedit/qsynedit.h
index 7337b9f0..1ad9783f 100644
--- a/libs/qsynedit/qsynedit/qsynedit.h
+++ b/libs/qsynedit/qsynedit/qsynedit.h
@@ -533,7 +533,7 @@ private:
     QString expandAtWideGlyphs(const QString& S);
     void updateModifiedStatus();
     void reparseLines(int startLine, int endLine);
-    void reparseLine(int line);
+    //void reparseLine(int line);
     void reparseDocument();
     void uncollapse(PCodeFoldingRange FoldRange);
     void collapse(PCodeFoldingRange FoldRange);
@@ -657,7 +657,7 @@ private slots:
     void onLinesCleared();
     void onLinesDeleted(int line, int count);
     void onLinesInserted(int line, int count);
-    void onLinesPutted(int line, int count);
+    void onLinesPutted(int line);
     //void onRedoAdded();
     void onScrollTimeout();
     void onDraggingScrollTimeout();
diff --git a/libs/qsynedit/qsynedit/syntaxer/asm.h b/libs/qsynedit/qsynedit/syntaxer/asm.h
index 31340321..4cd162ef 100644
--- a/libs/qsynedit/qsynedit/syntaxer/asm.h
+++ b/libs/qsynedit/qsynedit/syntaxer/asm.h
@@ -106,23 +106,18 @@ public:
     void next() override;
     void setLine(const QString &newLine, int lineNumber) override;
 
-    // SynHighlighter interface
-public:
     bool isCommentNotFinished(int state) const override;
     bool isStringNotFinished(int state) const override;
     SyntaxState getState() const override;
     void setState(const SyntaxState& rangeState) override;
     void resetState() override;
 
-
-public:
+    bool supportFolding() override;
+    bool needsLineState() override;
     QSet<QString> keywords() override;
 
     bool isATT() const;
     void setATT(bool newATT);
-
-    // Syntaxer interface
-public:
     QString commentSymbol() override;
     QString blockCommentBeginSymbol() override;
     QString blockCommentEndSymbol() override;
diff --git a/libs/qsynedit/qsynedit/syntaxer/cpp.h b/libs/qsynedit/qsynedit/syntaxer/cpp.h
index ff3620dd..0b4fdf43 100644
--- a/libs/qsynedit/qsynedit/syntaxer/cpp.h
+++ b/libs/qsynedit/qsynedit/syntaxer/cpp.h
@@ -175,7 +175,7 @@ private:
     PTokenAttribute mGlobalVarAttribute;
     PTokenAttribute mLocalVarAttribute;
 
-    // SynHighligterBase interface
+    // Syntaxer interface
 public:
     bool isCommentNotFinished(int state) const override;
     bool isStringNotFinished(int state) const override;
@@ -193,34 +193,21 @@ public:
     QString languageName() override;
     ProgrammingLanguage language() override;
 
-    // SynHighlighter interface
-public:
     SyntaxState getState() const override;
-
-    // SynHighlighter interface
-public:
     bool isIdentChar(const QChar &ch) const override;
     bool isIdentStartChar(const QChar &ch) const override;
-
-    // SynHighlighter interface
-public:
     QSet<QString> keywords() override;
-
-    // SynHighlighter interface
-public:
     QString foldString(QString startLine) override;
     const QSet<QString> &customTypeKeywords() const;
     void setCustomTypeKeywords(const QSet<QString> &newCustomTypeKeywords);
 
-    // Highlighter interface
-public:
     bool supportBraceLevel() override;
 
-    // Syntaxer interface
-public:
     QString commentSymbol() override;
     QString blockCommentBeginSymbol() override;
     QString blockCommentEndSymbol() override;
+    virtual bool supportFolding() override;
+    virtual bool needsLineState() override;
 };
 
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/glsl.cpp b/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
index ea7a291c..939f7396 100644
--- a/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
@@ -1446,6 +1446,6 @@ bool GLSLSyntaxer::supportFolding()
 
 bool GLSLSyntaxer::needsLineState()
 {
-
+    return true;
 }
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/glsl.h b/libs/qsynedit/qsynedit/syntaxer/glsl.h
index 66e7f4a5..7299431f 100644
--- a/libs/qsynedit/qsynedit/syntaxer/glsl.h
+++ b/libs/qsynedit/qsynedit/syntaxer/glsl.h
@@ -175,24 +175,14 @@ public:
 
     QString languageName() override;
     ProgrammingLanguage language() override;
-
-    // SynHighlighter interface
-public:
     SyntaxState getState() const override;
-
-    // SynHighlighter interface
-public:
     QSet<QString> keywords() override;
-
-    // Highlighter interface
-public:
     bool supportBraceLevel() override;
-
-    // Syntaxer interface
-public:
     QString commentSymbol() override;
     QString blockCommentBeginSymbol() override;
     QString blockCommentEndSymbol() override;
+    bool supportFolding() override;
+    bool needsLineState() override;
 };
 
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/lua.h b/libs/qsynedit/qsynedit/syntaxer/lua.h
index fa01621e..4b22b7d0 100644
--- a/libs/qsynedit/qsynedit/syntaxer/lua.h
+++ b/libs/qsynedit/qsynedit/syntaxer/lua.h
@@ -138,7 +138,7 @@ private:
     PTokenAttribute mStringEscapeSequenceAttribute;
     PTokenAttribute mCharAttribute;
 
-    // SynHighligterBase interface
+
 public:
     bool isCommentNotFinished(int state) const override;
     bool isStringNotFinished(int state) const override;
@@ -154,41 +154,23 @@ public:
 
     QString languageName() override;
     ProgrammingLanguage language() override;
-
-    // SynHighlighter interface
-public:
     SyntaxState getState() const override;
-
-    // SynHighlighter interface
-public:
     bool isIdentChar(const QChar &ch) const override;
     bool isIdentStartChar(const QChar& ch) const override;
-
-    // SynHighlighter interface
-public:
     QSet<QString> keywords() override;
-
-    // SynHighlighter interface
-public:
     QString foldString(QString startLine) override;
     const QSet<QString> &customTypeKeywords() const;
     void setCustomTypeKeywords(const QSet<QString> &newCustomTypeKeywords);
-
-    // Highlighter interface
-public:
     bool supportBraceLevel() override;
-
-    // Syntaxer interface
-public:
     QMap<QString, QSet<QString> > scopedKeywords() override;
     bool useXMakeLibs() const;
     void setUseXMakeLibs(bool newUseXMakeLibs);
-
-    // Syntaxer interface
-public:
     QString commentSymbol() override;
     QString blockCommentBeginSymbol() override;
     QString blockCommentEndSymbol() override;
+    bool supportFolding() override;
+    bool needsLineState() override;
+
 };
 
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/makefile.h b/libs/qsynedit/qsynedit/syntaxer/makefile.h
index cfbf797e..015afcf4 100644
--- a/libs/qsynedit/qsynedit/syntaxer/makefile.h
+++ b/libs/qsynedit/qsynedit/syntaxer/makefile.h
@@ -131,7 +131,6 @@ private:
         return (ch>='0') && (ch<='9');
     }
 
-    // SynHighlighter interface
 public:
     bool eol() const override;
 
@@ -142,23 +141,17 @@ public:
     int getTokenPos() override;
     void next() override;
     void setLine(const QString &newLine, int lineNumber) override;
-
-    // SynHighlighter interface
-public:
     bool isCommentNotFinished(int state) const override;
     bool isStringNotFinished(int state) const override;
     SyntaxState getState() const override;
     void setState(const SyntaxState& rangeState) override;
     void resetState() override;
-
     bool isIdentChar(const QChar& ch) const override;
-public:
     QSet<QString> keywords() override;
-
-
-    // Syntaxer interface
-public:
     QString commentSymbol() override;
+    bool supportFolding() override;
+    bool needsLineState() override;
+
 };
 
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/syntaxer.cpp b/libs/qsynedit/qsynedit/syntaxer/syntaxer.cpp
index e48072ab..727f761d 100644
--- a/libs/qsynedit/qsynedit/syntaxer/syntaxer.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/syntaxer.cpp
@@ -19,7 +19,6 @@
 
 namespace QSynedit {
 Syntaxer::Syntaxer() :
-    mEnabled(true),
     mWordBreakChars{ WordBreakChars }
 {
     mCommentAttribute = std::make_shared<TokenAttribute>(SYNS_AttrComment,
@@ -42,7 +41,7 @@ Syntaxer::Syntaxer() :
     addAttribute(mSymbolAttribute);
 }
 
-const QMap<QString, PTokenAttribute>& Syntaxer::attributes() const
+QMap<QString, PTokenAttribute> Syntaxer::attributes() const
 {
     return mAttributes;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
index 4ad887ef..8f1ef306 100644
--- a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
+++ b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
@@ -122,7 +122,7 @@ public:
     Syntaxer(const Syntaxer&)=delete;
     Syntaxer& operator=(const Syntaxer&)=delete;
 
-    virtual const QMap<QString, PTokenAttribute>& attributes() const;
+    virtual QMap<QString, PTokenAttribute> attributes() const;
 
     const QSet<QChar>& wordBreakChars() const;