Index: openacs-4/packages/acs-tcl/tcl/html-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/html-procs.tcl,v
diff -u -r1.5.2.2 -r1.5.2.3
--- openacs-4/packages/acs-tcl/tcl/html-procs.tcl	6 Dec 2020 08:45:47 -0000	1.5.2.2
+++ openacs-4/packages/acs-tcl/tcl/html-procs.tcl	1 Feb 2021 10:51:09 -0000	1.5.2.3
@@ -162,7 +162,7 @@
       }
       # Formfield's name can contain colons,
       # I need to escape them.
-      regsub -all {:} $name {\:} name
+      regsub -all -- {:} $name {\:} name
       lappend vars [list $name $value]
     }