anchor.diff:  xcopy /F /G /H /R /K /Y /S /E reference %DISTDIR%\reference\
   
   cd %DISTROOT%
  -7za a %ARCHIVE% %DISTDIR%
  +7za a %DIST_ARCHIVE% %DISTDIR%
   goto :eof
   
   :usage
  
positive.code: mkdir %DISTDIR%\reference
  mkdir %DISTDIR%\site-lisp
  
  cd %BUILDDIR%
  call git clone %GIT_REPO% %BUILDDIR% || exit /b 1
  call git checkout %TAG% || git tag; exit /b 1
  call build.bat || exit /b 1
  call bytecompile.bat || exit /b 1
  
  
negative.code: 
  set TAG=v%VERSION%
  set APPNAME=xyzzy
  
  set BASEDIR=%~dp0
  set GIT_REPO=%BASEDIR%
  set DISTROOT=%BASEDIR%\_dist
  set DISTDIR=%BASEDIR%\_dist\%APPNAME%
  set SRCDIR=%BASEDIR%\_dist\%APPNAME%-src-%VERSION%
  set DIST_ARCHIVE=%DISTROOT%\%APPNAME%-%VERSION%.zip
  set SRC_ARCHIVE=%DISTROOT%\%APPNAME%-src-%VERSION%.zip
  
  call git tag %TAG% -a -m "%APPNAME% %VERSION% released!" || exit /b 1
  call git tag
  