anchor.diff:  
   
   ##
  -## settings 
  +## settings
   ##
   
   
  
positive.code: 
  
  install_chef() {
    if ! which chef-solo > /dev/null ; then 
      echo installing chef via omnibus...
      curl -L --silent https://www.opscode.com/chef/install.sh | sudo bash -s -- -v 11.2.0  1>&2
    else 
      echo chef is already installed
    fi
  }
  
negative.code:   git_wrapper=/etc/chef/git_wrapper
    local keyfile=/etc/chef/git_key
    mkdir -p $(dirname $repo_dir)
    if [ -d $repo_dir ]; then
      echo updating source...
      (cd $repo_dir && GIT_SSH=$git_wrapper git fetch && git reset --hard origin/$branch && git clean -fdx)
    else
  