Index: lib/redmine/export/pdf.rb
===================================================================
--- lib/redmine/export/pdf.rb	(revision 6073)
+++ lib/redmine/export/pdf.rb	(working copy)
@@ -28,6 +28,7 @@
     module PDF
       include ActionView::Helpers::TextHelper
       include ActionView::Helpers::NumberHelper
+      include IssuesHelper
 
       class ITCPDF < TCPDF
         include Redmine::I18n
@@ -182,7 +183,7 @@
         pdf.SetFontStyle('',8)
         pdf.SetFillColor(255, 255, 255)
         previous_group = false
-        issues.each do |issue|
+        issue_list(issues) do |issue, level|
           if query.grouped? &&
                (group = query.group_by_column.value(issue)) != previous_group
             pdf.SetFontStyle('B',9)
@@ -199,6 +200,9 @@
               show_value(cv)
             else
               value = issue.send(column.name)
+              if column.name == :subject
+                value = "  " * level + value
+              end
               if value.is_a?(Date)
                 format_date(value)
               elsif value.is_a?(Time)