diff --git a/app/helpers/issues_helper.rb b/app/helpers/issues_helper.rb
index 609aae204..18d2af317 100644
--- a/app/helpers/issues_helper.rb
+++ b/app/helpers/issues_helper.rb
@@ -18,6 +18,17 @@
 module IssuesHelper
   include ApplicationHelper
 
+  def issue_list(issues, &block)
+    ancestors = []
+    issues.each do |issue|
+      while (ancestors.any? && !issue.is_descendant_of?(ancestors.last))
+        ancestors.pop
+      end
+      yield issue, ancestors.size
+      ancestors << issue
+    end
+  end
+  
   def render_issue_tooltip(issue)
     @cached_label_start_date ||= l(:field_start_date)
     @cached_label_due_date ||= l(:field_due_date)
@@ -43,17 +54,14 @@ module IssuesHelper
   
   def render_descendants_tree(issue)
     s = '<form><table class="list issues">'
-    ancestors = []
-    issue.descendants.sort_by(&:lft).each do |child|
-      level = child.level - issue.level - 1
+    issue_list(issue.descendants.sort_by(&:lft)) do |child, level|
       s << content_tag('tr',
              content_tag('td', check_box_tag("ids[]", child.id, false, :id => nil), :class => 'checkbox') +
-             content_tag('td', link_to_issue(child, :truncate => 60), :class => 'subject',
-                                                                      :style => "padding-left: #{level * 20}px") +
+             content_tag('td', link_to_issue(child, :truncate => 60), :class => 'subject') +
              content_tag('td', h(child.status)) +
              content_tag('td', link_to_user(child.assigned_to)) +
              content_tag('td', progress_bar(child.done_ratio, :width => '80px')),
-             :class => "issue-#{child.id} hascontextmenu")
+             :class => "issue issue-#{child.id} hascontextmenu #{level > 0 ? "idnt idnt-#{level}" : nil}")
     end
     s << '</form></table>'
     s
diff --git a/app/helpers/queries_helper.rb b/app/helpers/queries_helper.rb
index ecfac55ad..997e5ff5a 100644
--- a/app/helpers/queries_helper.rb
+++ b/app/helpers/queries_helper.rb
@@ -57,6 +57,8 @@ module QueriesHelper
       l(:general_text_Yes)
     when 'FalseClass'
       l(:general_text_No)
+    when 'Issue'
+      link_to_issue(value, :subject => false)
     else
       h(value)
     end
diff --git a/app/helpers/sort_helper.rb b/app/helpers/sort_helper.rb
index 4ea7b87b0..c1a89db5a 100644
--- a/app/helpers/sort_helper.rb
+++ b/app/helpers/sort_helper.rb
@@ -81,7 +81,7 @@ module SortHelper
     def to_sql
       sql = @criteria.collect do |k,o|
         if s = @available_criteria[k]
-          (o ? s.to_a : s.to_a.collect {|c| "#{c} DESC"}).join(', ')
+          (o ? s.to_a : s.to_a.collect {|c| append_desc(c)}).join(', ')
         end
       end.compact.join(', ')
       sql.blank? ? nil : sql
@@ -120,6 +120,15 @@ module SortHelper
       @criteria.slice!(3)
       self
     end
+    
+    # Appends DESC to the sort criterion unless it has a fixed order
+    def append_desc(criterion)
+      if criterion =~ / (asc|desc)$/i
+        criterion
+      else
+        "#{criterion} DESC"
+      end
+    end
   end
   
   def sort_name
diff --git a/app/models/query.rb b/app/models/query.rb
index ae162b0a7..1ecf8dcea 100644
--- a/app/models/query.rb
+++ b/app/models/query.rb
@@ -27,10 +27,11 @@ class QueryColumn
       self.groupable = name.to_s
     end
     self.default_order = options[:default_order]
+    @caption_key = options[:caption] || "field_#{name}"
   end
   
   def caption
-    l("field_#{name}")
+    l(@caption_key)
   end
   
   # Returns true if the column is sortable, otherwise false
@@ -120,6 +121,7 @@ class Query < ActiveRecord::Base
   @@available_columns = [
     QueryColumn.new(:project, :sortable => "#{Project.table_name}.name", :groupable => true),
     QueryColumn.new(:tracker, :sortable => "#{Tracker.table_name}.position", :groupable => true),
+    QueryColumn.new(:parent, :sortable => ["#{Issue.table_name}.root_id", "#{Issue.table_name}.lft ASC"], :default_order => 'desc', :caption => :field_parent_issue),
     QueryColumn.new(:status, :sortable => "#{IssueStatus.table_name}.position", :groupable => true),
     QueryColumn.new(:priority, :sortable => "#{IssuePriority.table_name}.position", :default_order => 'desc', :groupable => true),
     QueryColumn.new(:subject, :sortable => "#{Issue.table_name}.subject"),
diff --git a/app/views/issues/_list.rhtml b/app/views/issues/_list.rhtml
index b29476d58..48e8311a5 100644
--- a/app/views/issues/_list.rhtml
+++ b/app/views/issues/_list.rhtml
@@ -13,7 +13,7 @@
 	</tr></thead>
 	<% previous_group = false %>
 	<tbody>
-	<% issues.each do |issue| -%>
+	<% issue_list(issues) do |issue, level| -%>
   <% if @query.grouped? && (group = @query.group_by_column.value(issue)) != previous_group %>
     <% reset_cycle %>
     <tr class="group open">
@@ -24,7 +24,7 @@
 		</tr>
 		<% previous_group = group %>
   <% end %>
-	<tr id="issue-<%= issue.id %>" class="hascontextmenu <%= cycle('odd', 'even') %> <%= issue.css_classes %>">
+	<tr id="issue-<%= issue.id %>" class="hascontextmenu <%= cycle('odd', 'even') %> <%= issue.css_classes %> <%= level > 0 ? "idnt idnt-#{level}" : nil %>">
 	    <td class="checkbox"><%= check_box_tag("ids[]", issue.id, false, :id => nil) %></td>
 		<td><%= link_to issue.id, :controller => 'issues', :action => 'show', :id => issue %></td>
         <% query.columns.each do |column| %><%= content_tag 'td', column_content(column, issue), :class => column.name %><% end %>
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index e82e6341b..356e25471 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -118,6 +118,17 @@ tr.issue td.subject, tr.issue td.category, td.assigned_to { white-space: normal;
 tr.issue td.subject { text-align: left; }
 tr.issue td.done_ratio table.progress { margin-left:auto; margin-right: auto;}
 
+tr.issue.idnt td.subject a {background: url(../images/bullet_arrow_right.png) no-repeat 0 50%; padding-left: 16px;}
+tr.issue.idnt-1 td.subject {padding-left: 0.5em;}
+tr.issue.idnt-2 td.subject {padding-left: 2em;}
+tr.issue.idnt-3 td.subject {padding-left: 3.5em;}
+tr.issue.idnt-4 td.subject {padding-left: 5em;}
+tr.issue.idnt-5 td.subject {padding-left: 6.5em;}
+tr.issue.idnt-6 td.subject {padding-left: 8em;}
+tr.issue.idnt-7 td.subject {padding-left: 9.5em;}
+tr.issue.idnt-8 td.subject {padding-left: 11em;}
+tr.issue.idnt-9 td.subject {padding-left: 12.5em;}
+
 tr.entry { border: 1px solid #f8f8f8; }
 tr.entry td { white-space: nowrap; }
 tr.entry td.filename { width: 30%; }