--- loncom/lonnet/perl/lonnet.pm	2021/02/10 15:48:14	1.1172.2.118.2.18
+++ loncom/lonnet/perl/lonnet.pm	2021/02/11 20:25:43	1.1172.2.118.2.19
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1172.2.118.2.18 2021/02/10 15:48:14 raeburn Exp $
+# $Id: lonnet.pm,v 1.1172.2.118.2.19 2021/02/11 20:25:43 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3785,6 +3785,10 @@ sub clean_filename {
 # Replace all .\d. sequences with _\d. so they no longer look like version
 # numbers
     $fname=~s/\.(\d+)(?=\.)/_$1/g;
+# Replace three or more adjacent underscores with one for consistency
+# with loncfile::filename_check() so complete url can be extracted by
+# lonnet::decode_symb()
+    $fname=~s/_{3,}/_/g;
     return $fname;
 }