anchor.diff:  
   :# Get the Nth Python instance
   set "PYTHON="
  -if %INSTANCE%==0 ( :# Performance optimization for instance #0
  +if %PY#%==0 ( :# Performance optimization for instance #0
     call :GetPythonExe PYTHON
   )
  -if not defined PYTHON ( :# For %INSTANCE% > 0, or if the above search for #0 failed
  +if not defined PYTHON ( :# For %PY#% > 0, or if the above search for #0 failed
     call :GetAllPythonExe LIST
  -  call :lindex LIST %INSTANCE% PYTHON
  +  call :lindex LIST %PY#% PYTHON
   )
   if not defined PYTHON (
     echo %SCRIPT%: Error: No python interpreter found
  
positive.code: :#   2019-10-01 JFL Added options --, -# and -l.                              #
  :#   2019-10-02 JFL Use DisableDelayedExpansion to avoid issues w. ! in args. #
  :#                  Added option -V.                                          #
  :#                                                                            #
  :#          Copyright 2019 Hewlett Packard Enterprise Development LP         #
  :# Licensed under the Apache 2.0 license  www.apache.org/licenses/LICENSE-2.0 #
  :##############################################################################
  
  setlocal EnableExtensions DisableDelayedExpansion
  set "VERSION=2019-10-02"
  set "SCRIPT=%~nx0"		&:# Script name
  set "SNAME=%~n0"		&:# Script name, without its extension
  set "SPATH=%~dp0"		&:# Script path
  
negative.code: :main
  set "EXEC="
  set "PYARGS="
  if not defined PY# set "PY#=0"
  
  goto :get_arg
  :next_arg
  