Redmine/app/views/repositories/diff.rhtml

<h2><%= render :partial => 'navigation', :locals => { :path => @path, :kind => 'file', :revision => @rev } %></h2>

<% parsing = false
line_num_l = 0
line_num_r = 0 %>
<% @diff.each do |line| %>
<% 
   if line =~ /^Index: (.*)$/
     if parsing %>
       </tbody></table>
     <%
     end
     parsing = false %>
       <table class="list"><thead>
         <tr><th colspan="3" class="list-filename"><%= l(:label_attachment) %>: <%= $1 %></th></tr>
         <tr><th>@<%= @rev %></th><th>@<%= @rev_to %></th><th></th></tr>
	</thead><tbody>
     <%
     next
   elsif line =~ /^@@ (\+|\-)(\d+)(,\d+)? (\+|\-)(\d+)(,\d+)? @@/
     line_num_l = $2.to_i
     line_num_r = $5.to_i
     parsing = true
     next
   elsif line =~ /^_+$/
     # We have reached the 'Properties' section.
     parsing = false
     next
   end
   next unless parsing
%>

<tr>

<% case line[0, 1] 
   when " " %>
<th class="line-num"><%= line_num_l %></th>
<th class="line-num"><%= line_num_r %></th>
<td class="line-code">
<% line_num_l = line_num_l + 1
   line_num_r = line_num_r + 1
   
   when "-" %>
<th class="line-num"></th>
<th class="line-num"><%= line_num_r %></th>
<td class="line-code" style="background: #fdd;">
<% line_num_r = line_num_r + 1

   when "+" %>
<th class="line-num"><%= line_num_l %></th>
<th class="line-num"></th>
<td class="line-code" style="background: #dfd;">
<% line_num_l = line_num_l + 1

   else
     next
   end %>
   
<%= h(line[1..-1]).gsub(/\s/, "&nbsp;") %></td></tr>

<% end %>
</tbody>
</table>

<% content_for :header_tags do %>
<%= stylesheet_link_tag "scm" %>
<% end %>