Index: openacs-4/packages/general-comments/www/view-comment.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/general-comments/www/view-comment.tcl,v
diff -u -r1.9.2.3 -r1.9.2.4
--- openacs-4/packages/general-comments/www/view-comment.tcl	6 Sep 2013 17:37:20 -0000	1.9.2.3
+++ openacs-4/packages/general-comments/www/view-comment.tcl	3 Oct 2013 08:41:29 -0000	1.9.2.4
@@ -43,7 +43,7 @@
 # if the user has write permissions then allow
 # viewing of selected revision
 if { $write_perm_p == 1 } {
-    if { [empty_string_p $revision_id] } {
+    if { $revision_id eq "" } {
 	# get the latest revision
 	set revision_id [db_string get_latest_revision {
             select content_item.get_latest_revision(:comment_id) from dual