# File lib/pry/pry_class.rb, line 80
  def self.real_path_to(file)
    expanded = Pathname.new(File.expand_path(file)).realpath.to_s
    # For rbx 1.9 mode [see rubinius issue #2165]
    File.exist?(expanded) ? expanded : nil
  rescue Errno::ENOENT
    nil
  end