Accept a plain text file as user input. The program is not robust at all and imposes a limit for the reply of 256 bytes, so even medium-sized files are likely to cause buffer overflow. These do not cause crashes but are still unpleasant user experience. The application logic should be fixed to automatically grow the reply buffer.
Learn words in UTF-8. RTL languages are not handled properly; the code needs to be reorganized to use Pango in order to support them. . Fix memory leak in ClearDictionary. Check fscanf result and close stream in Niall_LoadDictionary.
