to_sh.rb

require 'parse_tree'
require 'ruby2ruby'
require 'parse_tree_extensions'
require 'shellwords'

class Proc
  def to_sh
    ruby = `which ruby`.strip
    command = Shellwords.shellescape(to_ruby.gsub(/\Aproc \{(.*)\}\Z/m, '\1').strip)
    paths = $LOAD_PATH.map {|p| Shellwords.shellescape("-I" + p)}.join(" ")
    requires = $LOADED_FEATURES.reverse.map {|p| Shellwords.shellescape("-r" + p)}.join(" ")
    "#{ruby} #{paths} #{requires} -e #{command}"
  end
end