I commited a file called "Testdaten.sql" that is encoded in UTF-16 (with proper BOM) and set the mime-type to "text/plain". I changed the file and wanted to view the differences ("Query->Show Changes"). In the "File/Revision Compare" window the right side ("Working Copy") is shown correctly. The left side ("Pristine Copy") is apparently trying to display the file using some ANSI encoding. The BOM is displayed as two question marks and every second char is displayed as a "invalid char block".