Index: openacs-4/packages/acs-templating/www/doc/demo/show.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/www/doc/demo/show.tcl,v
diff -u -r1.1 -r1.2
--- openacs-4/packages/acs-templating/www/doc/demo/show.tcl	13 Mar 2001 22:59:27 -0000	1.1
+++ openacs-4/packages/acs-templating/www/doc/demo/show.tcl	27 Oct 2014 16:40:19 -0000	1.2
@@ -1,11 +1,15 @@
 set file [ns_queryget file]
 
-if { [regexp {\.\.|^/} $file] } {
+if { $file eq "" } {
 
+  set output "no file specified"
+
+} elseif { [regexp {\.\.|^/} $file] } {
+
   set output "Only files within this directory may be shown."
 
 } else {
- 
+
   # [ns_url2file [ns_conn url]]  fails under request processor !
   # the file for URL pkg/page may be in packages/pkg/www/page, not www/pkg/page
   set dir [file dirname [ad_conn file]]