Fix reload file but document marked as unsaved bug

Closes #689

PowerEditor/src/ScitillaComponent/Buffer.cpp

@@ -674,6 +674,10 @@ bool FileManager::reloadBuffer(BufferID id)
 	FormatType bkformat;
 	LangType lang = buf->getLangType();
 
+
+	buf->setLoadedDirty(false);	// Since the buffer will be reloaded from the disk, and it will be clean (not dirty), we can set _isLoadedDirty false safetly.
+								// Set _isLoadedDirty false before calling "_pscratchTilla->execute(SCI_CLEARALL);" in loadFileData() to avoid setDirty in SCN_SAVEPOINTREACHED / SCN_SAVEPOINTLEFT
+
 	bool res = loadFileData(doc, buf->getFullPathName(), data, &UnicodeConvertor, lang, encoding, &bkformat);
 	buf->_canNotify = true;
 
@@ -1344,8 +1348,7 @@ LangType FileManager::detectLanguageFromTextBegining(const unsigned char *data,
 	return L_TEXT;
 }
 
-inline bool FileManager::loadFileData(Document doc, const TCHAR * filename, char* data, Utf8_16_Read * UnicodeConvertor,
-	LangType & language, int & encoding, FormatType* pFormat)
+inline bool FileManager::loadFileData(Document doc, const TCHAR * filename, char* data, Utf8_16_Read * UnicodeConvertor, LangType & language, int & encoding, FormatType* pFormat)
 {
 	FILE *fp = generic_fopen(filename, TEXT("rb"));
 	if (!fp)

PowerEditor/src/ScitillaComponent/Buffer.h

@@ -393,5 +393,5 @@ private:
 	// For backup system
 	generic_string _backupFileName;
 	bool _isModified = false;
-	bool _isLoadedDirty = false;
+	bool _isLoadedDirty = false; // it's the indicator for finding buffer's initial state
 };