save_yaml

# File lib/bundler/vendor/thor/lib/thor/runner.rb, line 194
  def save_yaml(yaml)
    yaml_file = File.join(thor_root, "thor.yml")

    unless File.exist?(yaml_file)
      require "fileutils"
      FileUtils.mkdir_p(thor_root)
      yaml_file = File.join(thor_root, "thor.yml")
      FileUtils.touch(yaml_file)
    end

    File.open(yaml_file, "w") { |f| f.puts yaml.to_yaml }
  end