Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -N -r1.368.2.44 -r1.368.2.45
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	28 Oct 2019 14:46:11 -0000	1.368.2.44
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	29 Oct 2019 13:56:32 -0000	1.368.2.45
@@ -368,8 +368,9 @@
     $f notification_notify
 
     foreach var {return_url:localurl template_file title detail_link:localurl text} {
-      if {[:exists_query_parameter $var]} {
-        set $var [:query_parameter $var]
+      regexp {^([^:]+):?} $var . key
+      if {[:exists_query_parameter $key]} {
+        set $key [:query_parameter $var]
       }
     }