Redmine

    group_by_keys(issue.project_id, issue.tracker_id, issue.visible_custom_field_values(user)).each do |title, values|

      if values.present?

        if title.nil?

          values.each do |value|

            items << "#{value.custom_field.name}: #{show_value(value, false)}"

          end

        else   

          item = [ "#{title}" ]

          values.each do |value|

            item << "#{value.custom_field.name}: #{show_value(value, false)}"

          end

          items << item

        end

      end

      content_tag('ul', items.select{|s| s.is_a? String}.map{|s| content_tag('li', s)}.join("\n").html_safe) + "\n" +

      items.select{|s| !s.is_a? String}.map{|item| content_tag('div', item.shift) + "\n" +

        content_tag('ul', item.map{|s| content_tag('li', s)}.join("\n").html_safe)}.join("\n").html_safe

      items.select{|s| s.is_a? String}.map{|s| "* #{s}"}.join("\n") + "\n" +

      items.select{|s| !s.is_a? String}.map{|item| "#{item.shift}\n" + item.map{|s| "* #{s}"}.join("\n")}.join("\n")

          group_by_keys(issue.project_id, issue.tracker_id, issue.visible_custom_field_values).each do |title, values|

            unless title.nil?

              pdf.RDMCell(35+155, 5, title, "LRT", 1)

              left = []

              right = []

            end  

            half = (values.size / 2.0).ceil

            values.each_with_index do |custom_value, i|

              (i < half ? left : right) << [custom_value.custom_field.name, show_value(custom_value, false)]

            end

            if pdf.get_rtl

              border_first_top = 'RT'

              border_last_top  = 'LT'

              border_first = 'R'

              border_last  = 'L'

            else

              border_first_top = 'LT'

              border_last_top  = 'RT'

              border_first = 'L'

              border_last  = 'R'

            end

            rows = left.size > right.size ? left.size : right.size

            rows.times do |i|

              heights = []

              pdf.SetFontStyle('B',9)

              item = left[i]

              heights << pdf.get_string_height(35, item ? "#{item.first}:" : "")

              item = right[i]

              heights << pdf.get_string_height(35, item ? "#{item.first}:" : "")

              pdf.SetFontStyle('',9)

              item = left[i]

              heights << pdf.get_string_height(60, item ? item.last.to_s  : "")

              item = right[i]

              heights << pdf.get_string_height(60, item ? item.last.to_s  : "")

              height = heights.max

              item = left[i]

              pdf.SetFontStyle('B',9)

              pdf.RDMMultiCell(35, height, item ? "#{item.first}:" : "", (i == 0 ? border_first_top : border_first), '', 0, 0)

              pdf.SetFontStyle('',9)

              pdf.RDMMultiCell(60, height, item ? item.last.to_s : "", (i == 0 ? border_last_top : border_last), '', 0, 0)

              item = right[i]

              pdf.SetFontStyle('B',9)

              pdf.RDMMultiCell(35, height, item ? "#{item.first}:" : "",  (i == 0 ? border_first_top : border_first), '', 0, 0)

              pdf.SetFontStyle('',9)

              pdf.RDMMultiCell(60, height, item ? item.last.to_s : "", (i == 0 ? border_last_top : border_last), '', 0, 2)

              pdf.set_x(base_x)

            end