<p><%= t(message.category) %>: <strong><%= t(message.type) %>
<% if message.row %>
  on row <%= message.row %>  
<% end %>
<% if message.column %>
  in column <%= message.column %>
<% end %></strong></p>
<% if message.content %>
  	<%= content_tag :pre, message.content.to_s.encode("utf-8", :invalid=>:replace, :undef=>:replace) %>
<% end %>
<% if i18n_set?("#{message.type}_guidance_html") %>
  <p><%= t("#{message.type}_guidance_html", message_variables(validator, message) ) %></p>
<% end %>
<% extra_guidance(validator, message).each do |extra| %>
	<% if i18n_set?("#{extra}_guidance_html") %>
	  <p><%= t("#{extra}_guidance_html", message_variables(validator, message) ) %></p>
	<% end %>
<% end %>
<p><%= t(message.category) %>: <strong><%= t(message.type) %>
<% if message.row %>
  on row <%= message.row %>
<% end %>
<% if message.column %>
  in column <%= message.column %>
<% end %></strong></p>
<% if message.content != ""%>
  	<%= content_tag :pre, message.content.to_s.encode("utf-8", :invalid=>:replace, :undef=>:replace) %>
<% end %>
<% if i18n_set?("#{message.type}_guidance_html") %>
  <p><%= t("#{message.type}_guidance_html", message_variables(validator, message) ) %></p>
<% end %>
<% extra_guidance(validator, message).each do |extra| %>
	<% if i18n_set?("#{extra}_guidance_html") %>
	  <p><%= t("#{extra}_guidance_html", message_variables(validator, message) ) %></p>
	<% end %>
<% end %>

Check for empty string rather than nil
Check for empty string rather than nil

I think we’re done here.
