def summary(images, max)
      return <<-EOF

        Creating a sprite from following images:
        \n#{images.map{|i| "        #{report_path(i[:filename])} (#{i[:width]}x#{i[:height]})" }.join("\n")}

        Output files:
          #{report_path(output_image_file)}
          #{report_path(output_style_file)}

        Output size:
          #{max[:width]}x#{max[:height]}

      EOF
    end
def summary(images, max)
      return <<-EOF

        Creating a sprite from following images:
        \n#{images.map{|i| "        #{report_path(i[:filename])} (#{i[:width]}x#{i[:height]})" }.join("\n")}

        Output files:
          #{report_path(output_image_file)}
          #{report_path(output_style_file)}

        Output size:
          #{max[:width]}x#{max[:height]}

      EOF
    end
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