-<link rel="stylesheet" type="text/css" href="[% c.uri_for('/static/css/syntax/' + language + '.css') %]"/>
+<link rel="stylesheet" type="text/css" href="[% c.uri_for('/static/css/syntax/' _ language _ '.css') %]"/>
[% FOREACH item IN diff %]
<div class='diff-head'>
diff --git