signinedit: Auto-disable the plugin when all authentication methods are disabled.

IkiWiki/Plugin/signinedit.pm

@@ -29,6 +29,7 @@ sub canedit ($$$) {
 	# signin can override this.
         if (! defined $session->param("name") ||
             ! IkiWiki::userinfo_get($session->param("name"), "regdate")) {
+	        return "" unless exists $IkiWiki::hooks{auth};
 		return sub { IkiWiki::needsignin($cgi, $session) };
 	}
 	else {

debian/changelog

@@ -2,6 +2,8 @@ ikiwiki (3.20100104) UNRELEASED; urgency=low
 
   * inline: Avoid showing edit links if page editing is disabled.
     (Sjoerd)
+  * signinedit: Auto-disable the plugin when all authentication methods
+    are disabled.
 
  -- Joey Hess <joeyh@debian.org>  Mon, 04 Jan 2010 12:53:24 -0500