anchor.diff:  
   <% if @configuration['modules'].has_key?('http') -%>
   --module=http
  -<% @configuration['modules']['http'].each do |k,v| -%>
  +<% @configuration['modules'].fetch('http', []).each do |k,v| -%>
   <%= k %>=<%= v %>
   <% end -%>
   <% end -%>
  
positive.code: 
  <% if @configuration['modules'].has_key?('deploy') -%>
  --module=deploy
  <% @configuration['modules'].has_key?('deploy').each do |k,v| -%>
  <%= k %>=<%= v %>
  <% end -%>
  <% end -%>
  
negative.code: 
  <% if @configuration['modules'].has_key?('server') -%>
  --module=server
  <% @configuration['modules'].fetch('server',[]).each do |k,v| -%>
  <%= k %>=<%= v %>
  <% end -%>
  <% end -%>
  