Index: openacs-4/packages/xotcl-core/tcl/generic-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/generic-procs.tcl,v
diff -u -N -r1.106 -r1.107
--- openacs-4/packages/xotcl-core/tcl/generic-procs.tcl	30 Apr 2018 09:46:44 -0000	1.106
+++ openacs-4/packages/xotcl-core/tcl/generic-procs.tcl	1 May 2018 08:40:01 -0000	1.107
@@ -467,7 +467,7 @@
     # edit button will be the first list element,
     # in between there will be user's elements,
     # delete button will be last
-    set elements [concat $elements ${:elements}]
+    lappend elements {*}${:elements}
     # build delete button
     if {!${:no_delete_p}} {
       set title [_ xotcl-core.delete_item]