Redmine/app/views/common/_diff.rhtml

<% diff = Redmine::UnifiedDiff.new(diff, :type => diff_type, :max_lines => Setting.diff_max_lines_displayed.to_i) -%>

<% diff.each do |table_file| -%>
<div class="autoscroll">
<% if diff.diff_type == 'sbs' -%>
<table class="filecontent">
<thead>
<tr><th colspan="4" class="filename"><%=to_utf8 table_file.file_name %></th></tr>
</thead>
<tbody>
<% table_file.each_line do |spacing, line| -%>
<% if spacing -%>
<tr class="spacing">
  <th class="line-num">...</th><td></td><th class="line-num">...</th><td></td>
</tr>
<% end -%>
<tr>
  <th class="line-num"><%= line.nb_line_left %></th>
  <td class="line-code <%= line.type_diff_left %>">
    <pre><%=to_utf8 line.html_line_left %></pre>
  </td>
  <th class="line-num"><%= line.nb_line_right %></th>
  <td class="line-code <%= line.type_diff_right %>">
    <pre><%=to_utf8 line.html_line_right %></pre>
  </td>
</tr>
<% end -%>
</tbody>
</table>

<% else -%>
<table class="filecontent">
<thead>
<tr><th colspan="3" class="filename"><%=to_utf8 table_file.file_name %></th></tr>
</thead>
<tbody>
<% table_file.each_line do |spacing, line| %>
<% if spacing -%>
<tr class="spacing">
  <th class="line-num">...</th><th class="line-num">...</th><td></td>
</tr>
<% end -%>
<tr>
  <th class="line-num"><%= line.nb_line_left %></th>
  <th class="line-num"><%= line.nb_line_right %></th>
  <td class="line-code <%= line.type_diff %>">
    <pre><%=to_utf8 line.html_line %></pre>
  </td>
</tr>
<% end -%>
</tbody>
</table>
<% end -%>
</div>
<% end -%>

<%= l(:text_diff_truncated) if diff.truncated? %>