Index: openacs-4/packages/categories/www/cadmin/synonym-delete-2.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/categories/www/cadmin/synonym-delete-2.tcl,v
diff -u -N -r1.7.2.2 -r1.7.2.3
--- openacs-4/packages/categories/www/cadmin/synonym-delete-2.tcl	20 Dec 2019 21:18:10 -0000	1.7.2.2
+++ openacs-4/packages/categories/www/cadmin/synonym-delete-2.tcl	3 May 2020 17:39:48 -0000	1.7.2.3
@@ -20,7 +20,7 @@
     foreach synonym_id [db_list check_synonyms_for_delete [subst {
         select s.synonym_id
         from category_synonyms s, categories c
-        where s.synonym_id in ([join $synonym_id ,])
+        where s.synonym_id in ([ns_dbquotelist $synonym_id])
         and c.category_id = s.category_id
         and acs_permission.permission_p(c.tree_id,:user_id,'category_tree_write') = 't'
         and s.synonym_p = 't'