diff --git a/NEWS.md b/NEWS.md
index b7583a1d..a5d257e7 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -3,6 +3,9 @@ Red Panda C++ Version 1.0.4
   - enhancement: add help link for regular expression in search dialog
   - enhancement: remember current problem set's filename
   - enhancement: F1 shorcut opens offcial website
+  - enhancement: don't auto complete '(', if the next non-space char is neither '(' nor ident char
+  - enhancement: if a project's unit encoding is the same with project's encoding, don't save its encoding
+  - fix: files will be saved to default encoding inspite of its original encoding
 
 Red Panda C++ Version 1.0.3
   - fix: when oj problem grabbed by competitive companion received,
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index 8f0e775d..411fb73b 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -228,7 +228,10 @@ void Editor::loadFile(QString filename) {
 
 void Editor::saveFile(QString filename) {
     QFile file(filename);
-    this->lines()->saveToFile(file,mEncodingOption,
+    QByteArray encoding = mFileEncoding;
+    if (mFileEncoding==ENCODING_ASCII)
+        encoding = mEncodingOption;
+    this->lines()->saveToFile(file,encoding,
                               pSettings->editor().defaultEncoding(),
                               mFileEncoding);
     emit fileSaved(filename, mInProject);
@@ -797,13 +800,14 @@ void Editor::keyPressEvent(QKeyEvent *event)
         case '*':
             handled = handleSymbolCompletion(ch);
             return;
-        case '(':
-            if (caretX()-1>=lineText().length()
-                    || caretX()<=0
-                    || isSpaceOrRightParenthesis(lineText().at(caretX()-1))) {
+        case '(': {
+            QChar nextCh = nextNotspaceChar(caretY()-1,caretX()-1);
+            qDebug()<<nextCh;
+            if (!isIdentChar(nextCh) && nextCh!='('  ){
                 handled = handleSymbolCompletion(ch);
             }
             return;
+        }
         case '>':
             if ((caretX() <= 1) || lineText().isEmpty()
                     ||  lineText()[caretX() - 2] != '-') {
diff --git a/RedPandaIDE/project.cpp b/RedPandaIDE/project.cpp
index 33ad6d03..76177e50 100644
--- a/RedPandaIDE/project.cpp
+++ b/RedPandaIDE/project.cpp
@@ -608,7 +608,8 @@ bool Project::saveUnits()
         ini.SetLongValue(groupName,"OverrideBuildCmd", unit->overrideBuildCmd());
         ini.SetValue(groupName,"BuildCmd", toByteArray(unit->buildCmd()));
         ini.SetLongValue(groupName,"DetectEncoding", unit->encoding()==ENCODING_AUTO_DETECT);
-        ini.SetValue(groupName,"FileEncoding", toByteArray(unit->encoding()));
+        if (unit->encoding() != options().encoding)
+            ini.SetValue(groupName,"FileEncoding", toByteArray(unit->encoding()));
     }
     ini.SetLongValue("Project","UnitCount",count);
     ini.SaveFile(mFilename.toLocal8Bit());
@@ -927,7 +928,7 @@ PProjectUnit Project::addUnit(const QString &inFileName, PProjectModelNode paren
         newUnit->setEncoding(e->fileEncoding());
         e->setInProject(true);
     } else {
-        newUnit->setEncoding(pSettings->editor().defaultEncoding());
+        newUnit->setEncoding(options().encoding.toUtf8());
     }
     newUnit->setFolder(getFolderPath(parentNode));
     newUnit->setNode(makeNewFileNode(extractFileName(newUnit->fileName()), false, parentNode));
diff --git a/RedPandaIDE/qsynedit/SynEdit.cpp b/RedPandaIDE/qsynedit/SynEdit.cpp
index a370dc6b..dca25886 100644
--- a/RedPandaIDE/qsynedit/SynEdit.cpp
+++ b/RedPandaIDE/qsynedit/SynEdit.cpp
@@ -1100,6 +1100,23 @@ QChar SynEdit::charAt(const BufferCoord &pos)
     return QChar(0);
 }
 
+QChar SynEdit::nextNotspaceChar(int line, int ch)
+{
+    if (ch<0)
+        return QChar();
+    QString s = mLines->getString(line);
+    if (s.isEmpty())
+        return QChar();
+    int x=ch;
+    while (x<s.length()) {
+        QChar ch = s[x];
+        if (!ch.isSpace())
+            return ch;
+        x++;
+    }
+    return QChar();
+}
+
 void SynEdit::setCaretAndSelection(const BufferCoord &ptCaret, const BufferCoord &ptBefore, const BufferCoord &ptAfter)
 {
     SynSelectionMode vOldMode = mActiveSelectionMode;
diff --git a/RedPandaIDE/qsynedit/SynEdit.h b/RedPandaIDE/qsynedit/SynEdit.h
index 473c5b19..f56f6d32 100644
--- a/RedPandaIDE/qsynedit/SynEdit.h
+++ b/RedPandaIDE/qsynedit/SynEdit.h
@@ -214,6 +214,7 @@ public:
     QString wordAtRowCol(const BufferCoord& XY);
 
     QChar charAt(const BufferCoord& pos);
+    QChar nextNotspaceChar(int line, int ch);
     int charColumns(QChar ch) const;
 
     bool isPointInSelection(const BufferCoord& Value) const;