Index: app/views/issues/_changesets.html.erb
===================================================================
--- app/views/issues/_changesets.html.erb	(revision 13203)
+++ app/views/issues/_changesets.html.erb	(working copy)
@@ -1,7 +1,15 @@
 <% changesets.each do |changeset| %>
     <div class="changeset <%= cycle('odd', 'even') %>">
     <p><%= link_to_revision(changeset, changeset.repository,
-                            :text => "#{l(:label_revision)} #{changeset.format_identifier}") %><br />
+                            :text => "#{l(:label_revision)} #{changeset.format_identifier}") %>
+        <%= link_to('(diff)',
+               :controller => 'repositories',
+               :action => 'diff',
+               :id     => @issue.project,
+               :repository_id => changeset.repository.identifier_param,
+               :path   => "",
+               :rev    => changeset.identifier) if changeset.filechanges.any? %>
+        <br />
         <span class="author"><%= authoring(changeset.committed_on, changeset.author) %></span></p>
     <div class="wiki">
         <%= textilizable(changeset, :comments) %>