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flush(output=nil) public

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# File lib/webrick/httpauth/htpasswd.rb, line 51
      def flush(output=nil)
        output ||= @path
        tmp = Tempfile.new("htpasswd", File::dirname(output))
        begin
          each{|item| tmp.puts(item.join(":")) }
          tmp.close
          File::rename(tmp.path, output)
        rescue
          tmp.close(true)
        end
      end
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