anchor.diff:  
   
   
  +
  +
  +rem ===========================================================================
  +rem   create remove_file_silent.bat script
  +rem ===========================================================================
  +
  +set out=%tmp%\remove_file_silent.bat
  +echo @echo off                                                      >  %out%
  +echo rem usage: path                                                >> %out%
  +echo if exist %%1 del %%1 ^> nul                                    >> %out%
  +echo if not %%ERRORLEVEL%%==0 echo ERROR: removing %%1 failed       >> %out%
  +
  +
  +
  +
  +
  +
   rem ===========================================================================
   rem   download and unpack 7zip using msiexec
   rem ===========================================================================
  
positive.code: echo libmpc-0.8.1-1-mingw32-dll-2.tar      >> %out%
  echo libmpfr-2.4.1-1-mingw32-dll-1.tar     >> %out%
  
  rem echo libpthread-2.8.0-3-mingw32-dll-2.tar  >> %out%
  
  echo pthreads-w32-2.8.0-3-mingw32-dev.tar  >> %out%
  
  
  set A=for /F %%F in (%tmp%\mingw_lzma_packages.txt) do
  
negative.code: 
  
  set out=%tmp%\msys_gz_packages.txt
  echo xz-4.999.9beta_20100401-1-msys-1.0.13-bin.tar         >  %out%
  echo liblzma-4.999.9beta_20100401-1-msys-1.0.13-dll-1.tar  >> %out%
  echo libbz2-1.0.5-1-msys-1.0.11-dll-1.tar                  >> %out%
  
  
  set A=for /F %%F in (%tmp%\msys_gz_packages.txt) do
  