Program: 119119
Project: 119119
Buggy source:
@Override protected void doSetInput(IEditorInput input) throws CoreException {
  if (input instanceof FileEditorInput) {
    try {
      IRunProcessService runProcessService=(IRunProcessService)GlobalServiceRegister.getDefault().getService(IRunProcessService.class);
      ITalendProcessJavaProject talendJavaProject=runProcessService.getTalendProcessJavaProject();
      final String pathSeperator="String_Node_Str";
      String routinesFolderName=ERepositoryObjectType.ROUTINES.getFolder().split(pathSeperator)[1];
      String talendSrcFolderPath=talendJavaProject.getSrcFolder().getLocation().toString() + pathSeperator;
      String routineFolderPath=talendSrcFolderPath + routinesFolderName + pathSeperator;
      IFile openedFile=((FileEditorInput)input).getFile();
      String openedFilePath=openedFile.getLocation().toString();
      boolean isRoutine=openedFilePath.startsWith(routineFolderPath);
      boolean isTalendGeneratedFile=openedFilePath.startsWith(talendSrcFolderPath);
      String systemRoutineFolderName="String_Node_Str";
      String systemRoutineFolderPath=routineFolderPath + pathSeperator + systemRoutineFolderName+ pathSeperator;
      boolean isSystemRoutine=openedFilePath.startsWith(systemRoutineFolderPath);
      if (isSystemRoutine) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else       if (isRoutine) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else       if (isTalendGeneratedFile) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else {
        fileType=FILE_TYPE_OTHERS;
      }
    }
 catch (    Throwable e) {
      CommonExceptionHandler.process(e,Priority.WARN);
      fileType=FILE_TYPE_OTHERS;
    }
  }
  super.doSetInput(input);
}

Fixed version (ground truth):
@Override protected void doSetInput(IEditorInput input) throws CoreException {
  if (input instanceof FileEditorInput) {
    try {
      IRunProcessService runProcessService=(IRunProcessService)GlobalServiceRegister.getDefault().getService(IRunProcessService.class);
      ITalendProcessJavaProject talendJavaProject=runProcessService.getTalendProcessJavaProject();
      final String pathSeperator="String_Node_Str";
      String routinesFolderName=ERepositoryObjectType.ROUTINES.getFolder().split(pathSeperator)[1];
      String talendSrcFolderPath=talendJavaProject.getSrcFolder().getLocation().toString() + pathSeperator;
      String routineFolderPath=talendSrcFolderPath + routinesFolderName + pathSeperator;
      IFile openedFile=((FileEditorInput)input).getFile();
      String openedFilePath=openedFile.getLocation().toString();
      boolean isRoutine=openedFilePath.startsWith(routineFolderPath);
      boolean isTalendGeneratedFile=openedFilePath.startsWith(talendSrcFolderPath);
      String systemRoutineFolderName="String_Node_Str";
      String systemRoutineFolderPath=routineFolderPath + systemRoutineFolderName + pathSeperator;
      boolean isSystemRoutine=openedFilePath.startsWith(systemRoutineFolderPath);
      if (isSystemRoutine) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else       if (isRoutine) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else       if (isTalendGeneratedFile) {
        fileType=FILE_TYPE_TALEND_GENERATED_READONLY;
      }
 else {
        fileType=FILE_TYPE_OTHERS;
      }
    }
 catch (    Throwable e) {
      CommonExceptionHandler.process(e,Priority.WARN);
      fileType=FILE_TYPE_OTHERS;
    }
  }
  super.doSetInput(input);
}