Index: openacs-4/packages/acs-tcl/tcl/xml-1-dom-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/xml-1-dom-procs.tcl,v
diff -u -N -r1.11.2.2 -r1.11.2.3
--- openacs-4/packages/acs-tcl/tcl/xml-1-dom-procs.tcl	5 Jan 2021 17:10:17 -0000	1.11.2.2
+++ openacs-4/packages/acs-tcl/tcl/xml-1-dom-procs.tcl	1 Feb 2021 10:51:09 -0000	1.11.2.3
@@ -1723,7 +1723,7 @@
 	' '
     }
 
-    regsub -all {([$<>&"'])} $value {$Entity(\1)} value
+    regsub -all -- {([$<>&"'])} $value {$Entity(\1)} value
 
     return [subst -nocommand -nobackslash $value]
 }