openproject/app/views/wiki/diff.html.erb

<div class="contextual">
<%= link_to(l(:label_history), {:action => 'history', :id => @page.title}, :class => 'icon icon-history') %>
</div>

<h2><%= h(@page.pretty_title) %></h2>

<p>
<%= l(:label_version) %> <%= link_to @diff.content_from.version, :action => 'show', :id => @page.title, :project_id => @page.project, :version => @diff.content_from.version %>/<%= @page.content.version %>
<em>(<%= @diff.content_from.user ? link_to_user(@diff.content_from.user) : l(:label_user_anonymous) %>, <%= format_time(@diff.content_from.updated_on) %>)</em>
&#8594;
<%= l(:label_version) %> <%= link_to @diff.content_to.version, :action => 'show', :id => @page.title, :project_id => @page.project, :version => @diff.content_to.version %>/<%= @page.content.version %>
<em>(<%= @diff.content_to.user ? link_to_user(@diff.content_to.user) : l(:label_user_anonymous) %>, <%= format_time(@diff.content_to.updated_on) %>)</em>
</p>

<div class="text-diff">
  <%= @html_diff.html_safe %>
</div>