--- loncom/lond	2016/04/02 04:30:29	1.519
+++ loncom/lond	2016/05/08 19:05:10	1.520
@@ -2,7 +2,7 @@
 # The LearningOnline Network
 # lond "LON Daemon" Server (port "LOND" 5663)
 #
-# $Id: lond,v 1.519 2016/04/02 04:30:29 raeburn Exp $
+# $Id: lond,v 1.520 2016/05/08 19:05:10 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -64,7 +64,7 @@ my $DEBUG = 0;		       # Non zero to ena
 my $status='';
 my $lastlog='';
 
-my $VERSION='$Revision: 1.519 $'; #' stupid emacs
+my $VERSION='$Revision: 1.520 $'; #' stupid emacs
 my $remoteVERSION;
 my $currenthostid="default";
 my $currentdomainid;
@@ -2496,11 +2496,20 @@ sub remove_user_file_handler {
 	    if (-e $file) {
 		#
 		#   If the file is a regular file unlink is fine...
-		#   However it's possible the client wants a dir.
-		#   removed, in which case rmdir is more approprate:
+		#   However it's possible the client wants a dir 
+		#   removed, in which case rmdir is more appropriate.
+		#   Note: rmdir will only remove an empty directory.
 		#
 	        if (-f $file){
 		    unlink($file);
+                    # for html files remove the associated .bak file 
+                    # which may have been created by the editor.
+                    if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
+                        my $path = $1;
+                        if (-e $file.'.bak') {
+                            unlink($file.'.bak');
+                        }
+                    }
 		} elsif(-d $file) {
 		    rmdir($file);
 		}