Index: openacs-4/packages/acs-tcl/tcl/test/html-conversion-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/test/html-conversion-procs.tcl,v
diff -u -r1.20.2.2 -r1.20.2.3
--- openacs-4/packages/acs-tcl/tcl/test/html-conversion-procs.tcl	3 Jul 2019 18:12:25 -0000	1.20.2.2
+++ openacs-4/packages/acs-tcl/tcl/test/html-conversion-procs.tcl	4 Jul 2019 14:14:25 -0000	1.20.2.3
@@ -118,6 +118,8 @@
     aa_true "protocol 'javascript' is not allowed" {[ad_html_security_check $html] ne ""}
     set html "<a href=\"data:alert('hi')\">An Link</a>"
     aa_true "protocol 'data' is not allowed" {[ad_html_security_check $html] ne ""}
+    set html "<a href=\"blob:https://noth.ing/')\">An Link</a>"
+    aa_true "protocol 'blob' is not allowed" {[ad_html_security_check $html] ne ""}
 }
 
 aa_register_case \