Index: openacs-4/packages/xowiki/tcl/includelet-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/includelet-procs.tcl,v
diff -u -N -r1.206 -r1.207
--- openacs-4/packages/xowiki/tcl/includelet-procs.tcl	11 Sep 2017 10:48:17 -0000	1.206
+++ openacs-4/packages/xowiki/tcl/includelet-procs.tcl	1 Oct 2017 12:10:25 -0000	1.207
@@ -3815,7 +3815,7 @@
       # All labels of the following switch statement are used
       # as variable names. Take care when adding new labels not to
       # overwrite existing variables.
-      switch $attr {
+      switch -- $attr {
         orderby {set $attr _[::xowiki::formfield::FormField fc_decode $value]}
         buttons - publish_status - category_id - unless -
         where -   with_categories - with_form_link - csv - view_field -