Maybe fix #233

klaus/templates/history.inc.html

@@ -47,7 +47,7 @@
   <ul>
   {% for commit in history %}
     <li>
-      <a class=commit href="{{ url_for('commit', repo=repo.name, rev=commit.id) }}">
+      <a class=commit href="{{ url_for('commit', repo=repo.name, rev=commit.id|force_unicode) }}">
         <span class=line1>
           <span>{{ commit.message|force_unicode|shorten_message }}</span>
         </span>