svn diff has bug

Hi
I think Subversion has bug (only on windows).

in case of emacs backup ~ files exists,
svn diff abort.

ｔhough it is a specification of Windows API...

thanx in advance.

% svn diff -r{2006-09-01}:{2006-10-01} *.cpp
svn: 'xxxxxx.cpp~' is not under version control

% dir xxxxxx.*
2007/07/31 11:43 81,532 xxxxxx.BAK
2007/07/31 12:04 81,394 xxxxxx.cpp
2007/07/31 12:04 81,394 xxxxxx.cpp.~BASE~
2007/07/31 12:03 81,394 xxxxxx.cpp.~BASE~~
2007/07/31 11:43 81,522 xxxxxx.cpp~
2007/07/31 20:50 118,035 xxxxxx.obj

% svn st -vq | grep -i bxsect
            9023 9023 myname xxxxxx.cpp

% ver
Microsoft Windows XP [Version 5.1.2600]

% svn --version
svn, version 1.4.4 (r25188)
   compiled Jun 8 2007, 18:49:42

---
% cvs diff -D 2006/09/01 -D 2006/10/01 *.cpp
%