comments: Add cache avoidance.

This got lost when we added the jump-to-comment anchor.

IkiWiki/Plugin/comments.pm

@@ -506,7 +506,10 @@ sub sessioncgi ($$) {
 		error($conflict) if defined $conflict;
 
 		# Jump to the new comment on the page.
-		IkiWiki::redirect($cgi, urlto($page, undef, 1)."#$location");
+		# The trailing question mark tries to avoid broken
+		# caches and get the most recent version of the page.
+		IkiWiki::redirect($cgi, urlto($page, undef, 1)."#$location?updated");
+
 	}
 	else {
 		IkiWiki::showform ($form, \@buttons, $session, $cgi,

debian/changelog

@@ -16,6 +16,7 @@ ikiwiki (3.00) UNRELEASED; urgency=low
   * Replace blank OpenID placeholder logo with an unofficial OpenID
     logo developed by Anna Hess. The official logo does not seem destined to
     be free.
+  * comments: Add cache avoidance.
 
  -- Joey Hess <joeyh@debian.org>  Wed, 24 Dec 2008 19:49:36 -0500