make it possible to have variadic URLs in links (#3917)

extra/modules/root.ptl

@@ -3,6 +3,8 @@ from quixote.directory import Directory
 from quixote.html import htmltext
 from quixote.util import StaticDirectory
 
+from wcs.qommon.misc import get_variadic_url
+
 import os
 import re
 import string
@@ -1120,6 +1122,7 @@ class AlternateRootDirectory(OldRootDirectory):
             # generic title
             '<h3>%s</h3>' % _('Useful links')
         has_ul = False
+        vars = get_publisher().substitutions.get_context_variables()
         for link in links:
             if not link.url:
                 # acting title
@@ -1132,7 +1135,7 @@ class AlternateRootDirectory(OldRootDirectory):
                 if not has_ul:
                     '<ul>'
                     has_ul = True
-                '<li><a href="%s">%s</a></li>' % (link.url, link.title)
+                '<li><a href="%s">%s</a></li>' % (get_variadic_url(link.url, vars), link.title)
         if has_ul:
             '</ul>'
         '</div>'