# File lib/rubygems.rb, line 988
  def self.loaded_path? path
    # TODO: ruby needs a feature to let us query what's loaded in 1.8 and 1.9
    $LOADED_FEATURES.find { |s|
      s =~ /(^|\/)#{Regexp.escape path}#{Regexp.union(*Gem.suffixes)}$/
    }
  end