_tail.rhtml in olddoc-1.9.0

- old
+ new

@@ -1,9 +1,9 @@
 <%
 public_email = @old_cfg['public_email']
 private_email = @old_cfg['private_email']
 source_code = Array(@old_cfg['source_code']).dup
-archive_urls = Array(@old_cfg['ml_url']) + Array(@old_cfg['nntp_url'])
+archive_urls = Array(@old_cfg.values_at(*%W(ml_url nntp_url imap_url))).flatten
 if url = archive_urls.shift %><hr /><pre>
 mail archives: <a
 href="<%= url %>"><%= url %></a><%
   archive_urls.each do |u| %>
 	<a