anchor.diff:      platform_version="6.0"
     fi
   # Apple OS X
  -elif [ -f "/usr/bin/sw_vers" ];
  -then
  +elif [ -f "/usr/bin/sw_vers" ]; then
     platform="mac_os_x"
     # Matching the tab-space with sed is error-prone
     platform_version=`sw_vers | awk '/^ProductVersion:/ { print $2 }'`
  
positive.code: os=`uname -s`
  
  # Retrieve Platform and Platform Version
  if [ -f "/etc/lsb-release" ] && grep -q DISTRIB_ID /etc/lsb-release;
  then
    platform=`grep DISTRIB_ID /etc/lsb-release | cut -d "=" -f 2 | tr '[A-Z]' '[a-z]'`
    platform_version=`grep DISTRIB_RELEASE /etc/lsb-release | cut -d "=" -f 2`
  elif [ -f "/etc/debian_version" ];
  then
    platform="debian"
    platform_version=`cat /etc/debian_version`
  elif [ -f "/etc/redhat-release" ];
  then
    platform=`sed 's/^\(.\+\) release.*/\1/' /etc/redhat-release | tr '[A-Z]' '[a-z]'`
    platform_version=`sed 's/^.\+ release \([.0-9]\+\).*/\1/' /etc/redhat-release`
  
  
negative.code: elif [ "x$os" = "xFreeBSD" ]; then
    platform="freebsd"
    platform_version=`uname -r | sed 's/-.*//'`
  elif [ "x$os" = "xAIX" ]; then
    platform="aix"
    platform_version=`uname -v`
    machine="ppc"
  fi
  
  if [ "x$platform" = "x" ];
  