Redmine/app/views/attachments/diff.html.erb

<h2><%=h @attachment.filename %></h2>

<div class="attachments">
<p><%= h("#{@attachment.description} - ") unless @attachment.description.blank? %>
   <span class="author"><%= link_to_user(@attachment.author) %>, <%= format_time(@attachment.created_on) %></span></p>
<p><%= link_to_attachment @attachment, :text => l(:button_download), :download => true -%>
   <span class="size">(<%= number_to_human_size @attachment.filesize %>)</span></p>
</div>
<p>
<%= form_tag({}, :method => 'get') do %>
    <label><%= l(:label_view_diff) %></label>
    <%= select_tag 'type',
                    options_for_select(
                      [[l(:label_diff_inline), "inline"], [l(:label_diff_side_by_side), "sbs"]], @diff_type),
                    :onchange => "if (this.value != '') {this.form.submit()}" %>
<% end %>
</p>
<%= render :partial => 'common/diff', :locals => {:diff => @diff, :diff_type => @diff_type} %>

<% html_title @attachment.filename %>

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