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

<%#-- copyright
OpenProject is a project management system.
Copyright (C) 2012-2015 the OpenProject Foundation (OPF)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 3.

OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
Copyright (C) 2006-2013 Jean-Philippe Lang
Copyright (C) 2010-2013 the ChiliProject Team

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

See doc/COPYRIGHT.rdoc for more details.

++#%>
<%= toolbar title: h(@page.title) do %>
  <li class="toolbar-item">
    <%= link_to({action: 'history', id: @page}, class: 'button') do %>
      <i class="button--icon icon-wiki"></i>
      <span class="button--text"><%= t(:label_history) %></span>
    <% end %>
  </li>
<% end %>

<p>
  <%= Version.model_name.human %> <%= link_to @diff.content_from.version, action: 'show', id: @page, 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.created_at) %>)</em>
  &#8594;
  <%= Version.model_name.human %> <%= link_to @diff.content_to.version, action: 'show', id: @page, 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.created_at) %>)</em>
</p>
<div class="text-diff">
  <%= nl2br @html_diff %>
</div>