Index: openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl,v
diff -u -r1.189.2.32 -r1.189.2.33
--- openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	7 Nov 2019 15:23:25 -0000	1.189.2.32
+++ openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	14 Nov 2019 08:24:21 -0000	1.189.2.33
@@ -2635,7 +2635,11 @@
     set text [string trim [string tolower $original_text]]
 
     # Save some german and french characters from removal by replacing
-    # them with their ascii counterparts.
+    # them with their ASCII counterparts.
+    #
+    # TODO: The following mappings are based on ISO8859-*, which are rarely used today.
+    #       Should be use (parts?) of ad_sanitize_filename or be replaced by it.
+    #
     set text [string map { \xe4 ae \xf6 oe \xfc ue \xdf ss \xf8 o \xe0 a \xe1 a \xe8 e \xe9 e } $text]
 
     # here's the Danish ones (hm. the o-slash conflicts with the definition above, which just says 'o')