class Pry::Command::ShellCommand

def path_from_cd_path(dest)
  return if !(dest && cd_path_exists?) || special_case_path?(dest)
  cd_path_env.split(File::PATH_SEPARATOR).each do |path|
    return path if File.directory?(path) && path.split(File::SEPARATOR).last == dest
  end
  nil
end