class Bundler::Settings

def load_config(config_file)
  return {} if !config_file || ignore_config?
  SharedHelpers.filesystem_access(config_file, :read) do |file|
    valid_file = file.exist? && !file.size.zero?
    return {} unless valid_file
    require_relative "yaml_serializer"
    YAMLSerializer.load(file.read).inject({}) do |config, (k, v)|
      new_k = k
      if k.include?("-")
        Bundler.ui.warn "Your #{file} config includes `#{k}`, which contains the dash character (`-`).\n" \
          "This is deprecated, because configuration through `ENV` should be possible, but `ENV` keys cannot include dashes.\n" \
          "Please edit #{file} and replace any dashes in configuration keys with a triple underscore (`___`)."
        new_k = k.gsub("-", "___")
      end
      config[new_k] = v
      config
    end
  end
end