anchor.diff:  
   prerelease="false"
   
  +project="chef"
  +
   # Check whether a command exists - returns 0 if it does, 1 if it does not
   exists() {
     if command -v $1 >/dev/null 2>&1
  
positive.code: }
  
  # Get command line arguments
  while getopts spv:f: opt
  do
    case "$opt" in
  
  
negative.code:     s)  use_shell=1;;
      p)  prerelease="true";;
      f)  cmdline_filename="$OPTARG";;
      p)  project="$OPTARG";;
      \?)   # unknown flag
        echo >&2 \
        "usage: $0 [-s] [-p] [-v version] [-f filename]"
  