How to use Bundler for a script run via symlink

script-with-bundler.rb

#!/usr/bin/env ruby

# Bundler needs to find the Gemfile in the current directory, so we 
#   need to dereference symlinks, then chdir to where this script lives
this_file = __FILE__
while( File.symlink?(this_file) )
  this_file = File.readlink(this_file)
end
Dir.chdir(File.dirname(this_file))

require "rubygems"
require "bundler"
Bundler.setup

# Now we can start doing whatever it was we were going to do