Index: openacs-4/packages/search/tcl/syndicate-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/search/tcl/syndicate-procs.tcl,v
diff -u -r1.4.2.1 -r1.4.2.2
--- openacs-4/packages/search/tcl/syndicate-procs.tcl	1 Mar 2021 18:01:00 -0000	1.4.2.1
+++ openacs-4/packages/search/tcl/syndicate-procs.tcl	8 Jun 2022 14:02:14 -0000	1.4.2.2
@@ -45,7 +45,7 @@
 
         set published [lc_time_fmt $syn(pubDate) "%a, %d %b %Y %H:%M:%S GMT"]
 
-   set xmlMap [list & "&amp;" < "&lt;" > "&gt;" \" "&quot;" ' "&apos;"]
+        set xmlMap [list & "&amp;" < "&lt;" > "&gt;" \" "&quot;" ' "&apos;" \x00 ""]
         set rss_xml_frag " <item>
   <title>[string map $xmlMap $d(title)]</title>
   <link>[string map $xmlMap $url]</link>