anchor.diff:    DoDeactivatePictureMode;
     DoDeactivateViewerMode;
   
  -  if AFileName2<>'' then
  +  bFilename2Valid:= (AFileName2<>'') and not SameFileName(AFileName, AFileName2);
  +  if bFilename2Valid then
       EditorsLinked:= false; //set it before opening 1st file
   
     DoFileOpen_Ex(Ed1, AFileName,
  
positive.code: procedure TEditorFrame.DoFileOpen(const AFileName, AFileName2: string;
    AAllowLoadHistory, AAllowLoadBookmarks, AAllowLexerDetect, AAllowErrorMsgBox, AAllowLoadUndo: boolean;
    AOpenMode: TAppOpenMode);
  begin
    NotifEnabled:= false; //for binary-viewer and pictures, NotifEnabled must be False
    FileProps.Inited:= false; //loading of new filename must not trigger notif-thread
  
negative.code:     AAllowLoadUndo,
      AOpenMode);
  
    if bFilename2Valid then
    begin
      SplitHorz:= false;
      Splitted:= true;
  