# File lib/bundler/fetcher.rb, line 184
    def fetch_remote_specs(gem_names, full_dependency_list = [], last_spec_list = [])
      query_list = gem_names - full_dependency_list

      # only display the message on the first run
      if Bundler.ui.debug?
        Bundler.ui.debug "Query List: #{query_list.inspect}"
      else
        Bundler.ui.info ".", false
      end

      return {@remote_uri => last_spec_list} if query_list.empty?

      remote_specs = Bundler::Retry.new("dependency api").attempts do
        fetch_dependency_remote_specs(query_list)
      end

      spec_list, deps_list = remote_specs
      returned_gems = spec_list.map {|spec| spec.first }.uniq
      fetch_remote_specs(deps_list, full_dependency_list + returned_gems, spec_list + last_spec_list)
    rescue HTTPError, MarshalError, GemspecError => e
      Bundler.ui.info "" unless Bundler.ui.debug? # new line now that the dots are over
      Bundler.ui.debug "could not fetch from the dependency API, trying the full index"
      @use_api = false
      return nil
    end