diff --git a/NEWS.md b/NEWS.md
index 521d3fbe..672b16b7 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -24,6 +24,7 @@ Red Panda C++ Version 2.27
   - fix: Selected lines doesn't draw line break glyphs.
   - fix: issue #215 (Caret may be drawn in the gutter.)
   - change: Force use utf8 as the exec encoding for fmtlib in the auto link options page.
+  - fix: After spaces in comments and strings, symbol completion for '{' and '(' are wrong.
 
 Red Panda C++ Version 2.26
   - enhancement: Code suggestion for embedded std::vectors.
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index dd23c4e1..4b53f09d 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -605,15 +605,15 @@ void Editor::undoSymbolCompletion(int pos)
 {
     QSynedit::PTokenAttribute attr;
     QString token;
-    bool tokenFinished;
+    QSynedit::SyntaxState syntaxState;
 
     if (!syntaxer())
         return;
     if (!pSettings->editor().removeSymbolPairs())
         return;
-    if (!getTokenAttriAtRowCol(caretXY(), token, tokenFinished, attr))
+    if (!getTokenAttriAtRowCol(caretXY(), token, attr, syntaxState))
         return;
-    if ((attr->tokenType() == QSynedit::TokenType::Comment) && (!tokenFinished))
+    if (syntaxer()->isCommentNotFinished(syntaxState.state))
         return ;
     //convert caret x to string index;
     pos--;
@@ -745,7 +745,7 @@ void Editor::keyPressEvent(QKeyEvent *event)
                 syntaxer()->setLine(s,caretY());
                 syntaxer()->nextToEol();
                 int state = syntaxer()->getState().state;
-                if (syntaxer()->isLastLineCommentNotFinished(state)) {
+                if (syntaxer()->isCommentNotFinished(state)) {
                     if (s=="/**") { //javadoc style docstring
                         s = lineText().mid(caretX()-1).trimmed();
                         if (s=="*/") {
@@ -2543,9 +2543,9 @@ bool Editor::handleSymbolCompletion(QChar key)
     if (syntaxer()) {
         if (caretX() <= 1) {
             if (caretY()>1) {
-                if (syntaxer()->isLastLineCommentNotFinished(document()->getSyntaxState(caretY() - 2).state))
+                if (syntaxer()->isCommentNotFinished(document()->getSyntaxState(caretY() - 2).state))
                     return false;
-                if (syntaxer()->isLastLineStringNotFinished(document()->getSyntaxState(caretY() - 2).state)
+                if (syntaxer()->isStringNotFinished(document()->getSyntaxState(caretY() - 2).state)
                         && (key!='\"') && (key!='\''))
                     return false;
             }
@@ -2554,11 +2554,11 @@ bool Editor::handleSymbolCompletion(QChar key)
             // Check if that line is highlighted as  comment
             QSynedit::PTokenAttribute attr;
             QString token;
-            bool tokenFinished;
-            if (getTokenAttriAtRowCol(HighlightPos, token, tokenFinished, attr)) {
-                if ((attr->tokenType() == QSynedit::TokenType::Comment) && (!tokenFinished))
+            QSynedit::SyntaxState syntaxState;
+            if (getTokenAttriAtRowCol(HighlightPos, token, attr, syntaxState)) {
+                if (syntaxer()->isCommentNotFinished(syntaxState.state))
                     return false;
-                if ((attr->tokenType() == QSynedit::TokenType::String) && (!tokenFinished)
+                if (syntaxer()->isStringNotFinished(syntaxState.state)
                         && (key!='\'') && (key!='\"') && (key!='(') && (key!=')'))
                     return false;
                 if (( key=='<' || key =='>') && (mParser && !mParser->isIncludeLine(lineText())))
@@ -3080,7 +3080,7 @@ Editor::QuoteStatus Editor::getQuoteStatus()
     QuoteStatus Result = QuoteStatus::NotQuote;
     if (!syntaxer())
         return Result;
-    if ((caretY()>1) && syntaxer()->isLastLineStringNotFinished(document()->getSyntaxState(caretY() - 2).state))
+    if ((caretY()>1) && syntaxer()->isStringNotFinished(document()->getSyntaxState(caretY() - 2).state))
         Result = QuoteStatus::DoubleQuote;
 
     QString Line = document()->getLine(caretY()-1);
@@ -3470,11 +3470,10 @@ void Editor::showCompletion(const QString& preWord,bool autoComplete, CodeComple
 
     QString s;
     QSynedit::PTokenAttribute attr;
-    bool tokenFinished;
     QSynedit::BufferCoord pBeginPos, pEndPos;
     if (getTokenAttriAtRowCol(
                 QSynedit::BufferCoord{caretX() - 1,
-                caretY()}, s, tokenFinished, attr)) {
+                caretY()}, s, attr)) {
         if (attr->tokenType() == QSynedit::TokenType::Preprocessor) {//Preprocessor
             word = getWordAtPosition(this,caretXY(),pBeginPos,pEndPos, WordPurpose::wpDirective);
             if (!word.startsWith('#')) {
diff --git a/libs/qsynedit/qsynedit/formatter/cppformatter.cpp b/libs/qsynedit/qsynedit/formatter/cppformatter.cpp
index 296c3efa..4336d079 100644
--- a/libs/qsynedit/qsynedit/formatter/cppformatter.cpp
+++ b/libs/qsynedit/qsynedit/formatter/cppformatter.cpp
@@ -128,7 +128,7 @@ namespace QSynedit {
         SyntaxState range;
         while (commentStartLine>=1) {
             range = editor->document()->getSyntaxState(commentStartLine-1);
-            if (!editor->syntaxer()->isLastLineCommentNotFinished(range.state)){
+            if (!editor->syntaxer()->isCommentNotFinished(range.state)){
                 commentStartLine++;
                 break;
             }
diff --git a/libs/qsynedit/qsynedit/qsynedit.cpp b/libs/qsynedit/qsynedit/qsynedit.cpp
index 22dc4d6a..908c7c4e 100644
--- a/libs/qsynedit/qsynedit/qsynedit.cpp
+++ b/libs/qsynedit/qsynedit/qsynedit.cpp
@@ -341,7 +341,9 @@ bool QSynEdit::getTokenAttriAtRowCol(const BufferCoord &pos, QString &token, PTo
     return getTokenAttriAtRowColEx(pos, token, tmpStart, attri);
 }
 
-bool QSynEdit::getTokenAttriAtRowCol(const BufferCoord &pos, QString &token, bool &tokenFinished, PTokenAttribute &attri)
+bool QSynEdit::getTokenAttriAtRowCol(
+        const BufferCoord &pos, QString &token,
+        PTokenAttribute &attri, SyntaxState &syntaxState)
 {
     int posX, posY, endPos, start;
     QString line;
@@ -362,10 +364,7 @@ bool QSynEdit::getTokenAttriAtRowCol(const BufferCoord &pos, QString &token, boo
                 endPos = start + token.length()-1;
                 if ((posX >= start) && (posX <= endPos)) {
                     attri = mSyntaxer->getTokenAttribute();
-                    if (posX == endPos)
-                        tokenFinished = mSyntaxer->getTokenFinished();
-                    else
-                        tokenFinished = false;
+                    syntaxState = mSyntaxer->getState();
                     return true;
                 }
                 mSyntaxer->next();
@@ -374,7 +373,6 @@ bool QSynEdit::getTokenAttriAtRowCol(const BufferCoord &pos, QString &token, boo
     }
     token = "";
     attri = PTokenAttribute();
-    tokenFinished = false;
     return false;
 }
 
@@ -2321,9 +2319,9 @@ void QSynEdit::insertLine(bool moveCaret)
         mSyntaxer->setLine(leftLineText, mCaretY-1);
         mSyntaxer->nextToEol();
         mDocument->setSyntaxState(mCaretY-1,mSyntaxer->getState());
-        notInComment = !mSyntaxer->isLastLineCommentNotFinished(
+        notInComment = !mSyntaxer->isCommentNotFinished(
                     mSyntaxer->getState().state)
-                && !mSyntaxer->isLastLineStringNotFinished(
+                && !mSyntaxer->isStringNotFinished(
                     mSyntaxer->getState().state);
     }
     int indentSpaces = 0;
@@ -5465,9 +5463,9 @@ int QSynEdit::doInsertTextByNormalMode(const BufferCoord& pos, const QStringList
     for (int i=1;i<text.length();i++) {
         bool notInComment = true;
 //        if (mHighlighter) {
-//            notInComment = !mHighlighter->isLastLineCommentNotFinished(
+//            notInComment = !mHighlighter->isCommentNotFinished(
 //                    mHighlighter->getRangeState().state)
-//                && !mHighlighter->isLastLineStringNotFinished(
+//                && !mHighlighter->isStringNotFinished(
 //                    mHighlighter->getRangeState().state);
 //        }
         caretY=pos.line+i;
diff --git a/libs/qsynedit/qsynedit/qsynedit.h b/libs/qsynedit/qsynedit/qsynedit.h
index fc17ed03..a9b70e12 100644
--- a/libs/qsynedit/qsynedit/qsynedit.h
+++ b/libs/qsynedit/qsynedit/qsynedit.h
@@ -264,7 +264,7 @@ public:
     bool getTokenAttriAtRowCol(const BufferCoord& pos, QString& token,
       PTokenAttribute& attri);
     bool getTokenAttriAtRowCol(const BufferCoord& pos, QString& token,
-      bool& tokenFinished, PTokenAttribute& attri);
+      PTokenAttribute& attri, SyntaxState &syntaxState);
     bool getTokenAttriAtRowColEx(const BufferCoord& pos, QString& token,
       int &start, PTokenAttribute& attri);
 
diff --git a/libs/qsynedit/qsynedit/syntaxer/asm.cpp b/libs/qsynedit/qsynedit/syntaxer/asm.cpp
index 0c6723c2..d4b8dda5 100644
--- a/libs/qsynedit/qsynedit/syntaxer/asm.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/asm.cpp
@@ -344,7 +344,7 @@ void ASMSyntaxer::UnknownProc()
     mTokenID = TokenId::Unknown;
 }
 
-bool ASMSyntaxer::isIdentStartChar(const QChar &ch)
+bool ASMSyntaxer::isIdentStartChar(const QChar &ch) const
 {
     if (ch == '_') {
         return true;
@@ -1718,17 +1718,12 @@ void ASMSyntaxer::setLine(const QString &newLine, int lineNumber)
     next();
 }
 
-bool ASMSyntaxer::getTokenFinished() const
+bool ASMSyntaxer::isCommentNotFinished(int /*state*/) const
 {
     return true;
 }
 
-bool ASMSyntaxer::isLastLineCommentNotFinished(int /*state*/) const
-{
-    return true;
-}
-
-bool ASMSyntaxer::isLastLineStringNotFinished(int /*state*/) const
+bool ASMSyntaxer::isStringNotFinished(int /*state*/) const
 {
     return true;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/asm.h b/libs/qsynedit/qsynedit/syntaxer/asm.h
index f5b73b72..31340321 100644
--- a/libs/qsynedit/qsynedit/syntaxer/asm.h
+++ b/libs/qsynedit/qsynedit/syntaxer/asm.h
@@ -91,7 +91,7 @@ private:
     void StringProc();
     void SymbolProc();
     void UnknownProc();
-    bool isIdentStartChar(const QChar& ch);
+    bool isIdentStartChar(const QChar& ch) const override;
     static void initData();
 
     // SynHighlighter interface
@@ -108,9 +108,8 @@ public:
 
     // SynHighlighter interface
 public:
-    bool getTokenFinished() const override;
-    bool isLastLineCommentNotFinished(int state) const override;
-    bool isLastLineStringNotFinished(int state) const override;
+    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;
diff --git a/libs/qsynedit/qsynedit/syntaxer/cpp.cpp b/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
index 06195fe7..67336a63 100644
--- a/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
@@ -1505,17 +1505,7 @@ QString CppSyntaxer::blockCommentEndSymbol()
     return "*/";
 }
 
-bool CppSyntaxer::getTokenFinished() const
-{
-    if (mTokenId == TokenId::Comment
-            || mTokenId == TokenId::String
-            || mTokenId == TokenId::RawString) {
-        return mRange.state == RangeState::rsUnknown;
-    }
-    return true;
-}
-
-bool CppSyntaxer::isLastLineCommentNotFinished(int state) const
+bool CppSyntaxer::isCommentNotFinished(int state) const
 {
     return (state == RangeState::rsAnsiC ||
             state == RangeState::rsDirectiveComment||
@@ -1523,7 +1513,7 @@ bool CppSyntaxer::isLastLineCommentNotFinished(int state) const
             state == RangeState::rsCppComment);
 }
 
-bool CppSyntaxer::isLastLineStringNotFinished(int state) const
+bool CppSyntaxer::isStringNotFinished(int state) const
 {
     return state == RangeState::rsString;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/cpp.h b/libs/qsynedit/qsynedit/syntaxer/cpp.h
index 2c7509ad..ff3620dd 100644
--- a/libs/qsynedit/qsynedit/syntaxer/cpp.h
+++ b/libs/qsynedit/qsynedit/syntaxer/cpp.h
@@ -177,9 +177,8 @@ private:
 
     // SynHighligterBase interface
 public:
-    bool getTokenFinished() const override;
-    bool isLastLineCommentNotFinished(int state) const override;
-    bool isLastLineStringNotFinished(int state) const override;
+    bool isCommentNotFinished(int state) const override;
+    bool isStringNotFinished(int state) const override;
     bool isDocstringNotFinished(int state) const override;
     bool eol() const override;
     QString getToken() const override;
diff --git a/libs/qsynedit/qsynedit/syntaxer/glsl.cpp b/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
index a020f53e..65a460f8 100644
--- a/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/glsl.cpp
@@ -1236,24 +1236,14 @@ void GLSLSyntaxer::pushIndents(IndentType indentType, int line)
     mRange.indents.push_back(IndentInfo{indentType,line});
 }
 
-bool GLSLSyntaxer::getTokenFinished() const
-{
-    if (mTokenId == TokenId::Comment
-            || mTokenId == TokenId::String
-            || mTokenId == TokenId::RawString) {
-        return mRange.state == RangeState::rsUnknown;
-    }
-    return true;
-}
-
-bool GLSLSyntaxer::isLastLineCommentNotFinished(int state) const
+bool GLSLSyntaxer::isCommentNotFinished(int state) const
 {
     return (state == RangeState::rsAnsiC ||
             state == RangeState::rsDirectiveComment||
             state == RangeState::rsCppComment);
 }
 
-bool GLSLSyntaxer::isLastLineStringNotFinished(int state) const
+bool GLSLSyntaxer::isStringNotFinished(int state) const
 {
     return state == RangeState::rsMultiLineString;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/glsl.h b/libs/qsynedit/qsynedit/syntaxer/glsl.h
index 1caf9f2f..66e7f4a5 100644
--- a/libs/qsynedit/qsynedit/syntaxer/glsl.h
+++ b/libs/qsynedit/qsynedit/syntaxer/glsl.h
@@ -161,9 +161,8 @@ private:
 
     // SynHighligterBase interface
 public:
-    bool getTokenFinished() const override;
-    bool isLastLineCommentNotFinished(int state) const override;
-    bool isLastLineStringNotFinished(int state) const override;
+    bool isCommentNotFinished(int state) const override;
+    bool isStringNotFinished(int state) const override;
     bool eol() const override;
     QString getToken() const override;
     const PTokenAttribute &getTokenAttribute() const override;
diff --git a/libs/qsynedit/qsynedit/syntaxer/lua.cpp b/libs/qsynedit/qsynedit/syntaxer/lua.cpp
index 288af9a2..ccbf2d61 100644
--- a/libs/qsynedit/qsynedit/syntaxer/lua.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/lua.cpp
@@ -1005,22 +1005,13 @@ QMap<QString, QSet<QString> > LuaSyntaxer::scopedKeywords()
     return StdLibTables;
 }
 
-bool LuaSyntaxer::getTokenFinished() const
-{
-    if (mTokenId == TokenId::Comment
-            || mTokenId == TokenId::String) {
-        return mRange.state == RangeState::rsUnknown;
-    }
-    return true;
-}
-
-bool LuaSyntaxer::isLastLineCommentNotFinished(int state) const
+bool LuaSyntaxer::isCommentNotFinished(int state) const
 {
     return (state == RangeState::rsComment ||
             state == RangeState::rsLongComment);
 }
 
-bool LuaSyntaxer::isLastLineStringNotFinished(int state) const
+bool LuaSyntaxer::isStringNotFinished(int state) const
 {
     return state == RangeState::rsString;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/lua.h b/libs/qsynedit/qsynedit/syntaxer/lua.h
index d031a70e..fa01621e 100644
--- a/libs/qsynedit/qsynedit/syntaxer/lua.h
+++ b/libs/qsynedit/qsynedit/syntaxer/lua.h
@@ -140,9 +140,8 @@ private:
 
     // SynHighligterBase interface
 public:
-    bool getTokenFinished() const override;
-    bool isLastLineCommentNotFinished(int state) const override;
-    bool isLastLineStringNotFinished(int state) const override;
+    bool isCommentNotFinished(int state) const override;
+    bool isStringNotFinished(int state) const override;
     bool eol() const override;
     QString getToken() const override;
     const PTokenAttribute &getTokenAttribute() const override;
diff --git a/libs/qsynedit/qsynedit/syntaxer/makefile.cpp b/libs/qsynedit/qsynedit/syntaxer/makefile.cpp
index f74ac3d8..476f12f4 100644
--- a/libs/qsynedit/qsynedit/syntaxer/makefile.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/makefile.cpp
@@ -649,17 +649,12 @@ void MakefileSyntaxer::setLine(const QString &newLine, int lineNumber)
     next();
 }
 
-bool MakefileSyntaxer::getTokenFinished() const
-{
-    return true;
-}
-
-bool MakefileSyntaxer::isLastLineCommentNotFinished(int /*state*/) const
+bool MakefileSyntaxer::isCommentNotFinished(int /*state*/) const
 {
     return false;
 }
 
-bool MakefileSyntaxer::isLastLineStringNotFinished(int /*state*/) const
+bool MakefileSyntaxer::isStringNotFinished(int /*state*/) const
 {
     return false;
 }
diff --git a/libs/qsynedit/qsynedit/syntaxer/makefile.h b/libs/qsynedit/qsynedit/syntaxer/makefile.h
index 1a6c00eb..cfbf797e 100644
--- a/libs/qsynedit/qsynedit/syntaxer/makefile.h
+++ b/libs/qsynedit/qsynedit/syntaxer/makefile.h
@@ -108,7 +108,7 @@ private:
 
     void pushState();
     void popState();
-    bool isIdentStartChar(const QChar& ch) {
+    bool isIdentStartChar(const QChar& ch)  const override{
         if ((ch>='a') && (ch <= 'z')) {
             return true;
         }
@@ -145,9 +145,8 @@ public:
 
     // SynHighlighter interface
 public:
-    bool getTokenFinished() const override;
-    bool isLastLineCommentNotFinished(int state) const override;
-    bool isLastLineStringNotFinished(int state) const override;
+    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;
diff --git a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
index 96a708a2..203ea449 100644
--- a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
+++ b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
@@ -141,9 +141,8 @@ public:
     virtual bool isIdentChar(const QChar& ch) const;
     virtual bool isIdentStartChar(const QChar& ch) const;
 
-    virtual bool getTokenFinished() const = 0;
-    virtual bool isLastLineCommentNotFinished(int state) const = 0;
-    virtual bool isLastLineStringNotFinished(int state) const = 0;
+    virtual bool isCommentNotFinished(int state) const = 0;
+    virtual bool isStringNotFinished(int state) const = 0;
     virtual bool isDocstringNotFinished(int /* state */) const { return false; }
     virtual bool eol() const = 0;
     virtual SyntaxState getState() const = 0;