--- loncom/interface/lonhtmlcommon.pm	2017/03/15 15:17:43	1.358.2.11
+++ loncom/interface/lonhtmlcommon.pm	2018/04/29 16:30:35	1.358.2.11.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.358.2.11 2017/03/15 15:17:43 raeburn Exp $
+# $Id: lonhtmlcommon.pm,v 1.358.2.11.2.2 2018/04/29 16:30:35 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -92,7 +92,7 @@ sub raw_href_to_link {
 
 sub entity_encode {
     my ($text)=@_;
-    return &HTML::Entities::encode($text, '<>&"');
+    return &HTML::Entities::encode($text, '\'<>&"');
 }
 
 sub direct_parm_link {
@@ -1690,7 +1690,7 @@ sub show_return_link {
             (($env{'request.noversionuri'}=~/^\/adm\//) &&
              ($env{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
              ($env{'request.noversionuri'}!~
-              m{^/adm/.*/(smppg|bulletinboard)($|\?)})
+              m{^/adm/.*/(smppg|bulletinboard|ext\.tool)($|\?)})
            ));
 }