--- rat/lonpageflip.pm	2018/11/13 03:59:17	1.98
+++ rat/lonpageflip.pm	2018/12/30 19:47:06	1.101
@@ -2,7 +2,7 @@
 #
 # Page flip handler
 #
-# $Id: lonpageflip.pm,v 1.98 2018/11/13 03:59:17 raeburn Exp $
+# $Id: lonpageflip.pm,v 1.101 2018/12/30 19:47:06 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -313,11 +313,17 @@ sub check_http_req {
         if (($$srcref =~ m{^\Q/public/$cdom/$cnum/syllabus\E($|\?)}) &&
             ($ENV{'SERVER_PORT'} == 443) &&
             ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
-            $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1';
-            $usehttp = 1;
+            unless (&Apache::lonnet::uses_sts()) {
+                $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1';
+                $usehttp = 1;
+            }
         } elsif (($$srcref =~ m{^\Q/adm/wrapper/ext/\E(?!https:)}) &&
                  ($ENV{'SERVER_PORT'} == 443)) {
-            $usehttp = 1;
+            unless (&Apache::lonnet::uses_sts()) {
+                my ($url,$anchor) = ($$srcref =~ /^([^\#]+)(?:|(\#[^\#]+))$/);
+                $$srcref = $url . (($$srcref =~/\?/)? '&':'?') . 'usehttp=1' .$anchor; 
+                $usehttp = 1;
+            }
         }
     }
     return $usehttp;
@@ -466,7 +472,7 @@ sub handler {
 	      return REDIRECT;
           }
       }
-      if ($direction eq 'return') { 
+      if ($direction eq 'return') {
 # -------------------------------------------------------- Return to last known
          my ($newloc,$usehttp);
          if (($last) && (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db',
@@ -478,8 +484,12 @@ sub handler {
                 $usehttp = &check_http_req(\$newloc);
 		if ($hash{'encrypted_'.$id}) { 
                     $newloc=&Apache::lonenc::encrypted($newloc);
-                } elsif ($newloc =~ m{^(/adm/wrapper/ext/[^\#]+)\#([^\#]+)$}) {
-                    $newloc = $1.&escape('#').$2;
+                }
+                if ($newloc =~ m{^(/adm/wrapper/ext/[^\#]+)(?:|(\#[^\#]+))$}) {
+                    my ($url,$anchor) = ($1,$2);
+                    if ($anchor) {
+                        $newloc = $url.(($url=~/\?/)?'&':'?').'symb='.&escape($last).$anchor;
+                    }
                 }
 	    } else {
 		$newloc='/adm/navmaps';