anchor.diff:  
   :check_python
   SETLOCAL
  -1>NUL 2>NUL CMD /c where python
  -IF %ERRORLEVEL% NEQ 0 (
  +SET FOUND_PYTHON_EXE=""
  +1>NUL 2>NUL CMD /c where python2
  +IF NOT ERRORLEVEL 1 (
  +  ECHO FOUND PYTHON 2
  +  SET FOUND_PYTHON_EXE=python2
  +)
  +IF %FOUND_PYTHON_EXE% EQU "" (
  +  1>NUL 2>NUL CMD /c where python
  +  IF NOT ERRORLEVEL 1 (
  +    SET FOUND_PYTHON_EXE=python
  +  )
  +)
  +IF %FOUND_PYTHON_EXE% EQU "" (
  +  ECHO ERROR: no Python executable found on PATH.
  +  ECHO Make sure you can run 'python' or 'python2' in a Command Prompt.
     ENDLOCAL & SET _RESULT=1
     GOTO :eof
   )
  -CMD /c python -c "import sys; sys.exit(1 if not sys.version_info[:2] == (2, 7) else 0)"
  +CMD /C %FOUND_PYTHON_EXE% -c "import sys; sys.exit(1 if not sys.version_info[:2] == (2, 7) else 0)"
   IF %ERRORLEVEL% NEQ 0 (
  +  ECHO ERROR: Python version mismatch - not 2.7
     ENDLOCAL & SET _RESULT=1
     GOTO :eof
   )
  -ENDLOCAL & SET _RESULT=0
  +ENDLOCAL & (
  +  SET _RESULT=0
  +  SET PYTHON_EXE=%FOUND_PYTHON_EXE%
  +)
   GOTO :eof
  
positive.code: 
  CALL :check_python
  IF %_RESULT% NEQ 0 (
    ECHO ERROR:
    ECHO Python 2.7 must be installed and on PATH:
    ECHO https://www.python.org/ftp/python/2.7.9/python-2.7.9.msi
    GOTO :exit_error
  
negative.code: REM Trampoline into xenia-build
  REM ============================================================================
  
  %PYTHON_EXE% xenia-build %*
  EXIT /b %ERRORLEVEL%
  
  
  