Index: openacs-4/packages/xowiki/catalog/xowiki.en_US.ISO-8859-1.xml
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/catalog/xowiki.en_US.ISO-8859-1.xml,v
diff -u -r1.50 -r1.51
--- openacs-4/packages/xowiki/catalog/xowiki.en_US.ISO-8859-1.xml	24 Nov 2008 14:06:06 -0000	1.50
+++ openacs-4/packages/xowiki/catalog/xowiki.en_US.ISO-8859-1.xml	30 Dec 2008 16:24:12 -0000	1.51
@@ -89,6 +89,7 @@
   <msg key="Page-title">Page Title</msg>
   <msg key="Page-validate_form_constraints">%errorMsg%</msg>
   <msg key="Page-validate_name">Another item with the name '%value%' exists already in this folder                                </msg>
+  <msg key="Page-validate_page_order">Page Order invalid; might only contain upper and lower case letters, underscore, digits and dots</msg>
   <msg key="page_type">Page Type</msg>
   <msg key="PageInstance-instance_attributes">Instance Attributes</msg>
   <msg key="PageInstance-page_template">Page Instance</msg>
Index: openacs-4/packages/xowiki/tcl/xowiki-form-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-form-procs.tcl,v
diff -u -r1.113 -r1.114
--- openacs-4/packages/xowiki/tcl/xowiki-form-procs.tcl	17 Dec 2008 23:00:56 -0000	1.113
+++ openacs-4/packages/xowiki/tcl/xowiki-form-procs.tcl	30 Dec 2008 16:24:12 -0000	1.114
@@ -23,9 +23,12 @@
 	{f.text "= richtext,editor=xinha"}
         {f.description "="}
         {f.nls_language "="}
-        {validate
-          {{name {\[::xowiki::validate_name\]} {Another item with this name exists \
-                already in this folder}}}}
+        {validate {
+          {name {\[::xowiki::validate_name\]} {Another item with this name exists \
+                already in this folder}}
+          {page_order {\[::xowiki::validate_form_field page_order\]} {Page Order invalid; \
+                might only contain upper and lower case letters, underscore, digits and dots}}
+        }}
         {with_categories true}
         {submit_link "view"}
         {folderspec ""}
@@ -255,20 +258,28 @@
     return 1
   }
 
-
-  proc ::xowiki::validate_form_constraints {} {
-    upvar form_constraints form_constraints
+  proc ::xowiki::validate_form_field {field_name} {
+    #
+    # Generic ad_compliant validator using validation methods from
+    # form_fields
+    #
+    upvar $field_name $field_name
     my instvar data
-    set f [$data lookup_form_field -name form_constraints [my set form_fields]]
-    $f value $form_constraints
+    #
+    # Get the form-field and set its value....
+    #
+    set f [$data lookup_form_field -name $field_name [my set form_fields]]
+    $f value [set $field_name]
     set validation_error [$f validate $data]
+    #
+    # If we get an error, we report it as well via util-user message
+    # 
+    #my msg "***** field_name = $field_name, cls=[$f info class] validation_error=$validation_error"
     if {$validation_error ne ""} {
-      util_user_message -message "Error in form constraints: $validation_error"
-      set success 0
-    } else {
-      set success 1
+      util_user_message -message "Error in field [$f label]: $validation_error"
+      return 0
     }
-    return $success
+    return 1
   }
 
 ##  We could strip the language prefix from the name, since it is essentially
@@ -437,9 +448,11 @@
             {html {size 30}} }}
         {validate {
           {upload_file {\[::xowiki::validate_file\]} {For new entries, \
-                                                          a upload file must be provided}}
+                       a upload file must be provided}}
+          {page_order {\[::xowiki::validate_form_field page_order\]} {Page Order invalid; 
+                       might only contain upper and lower case letters, underscore, digits and dots}}
           {name {\[::xowiki::validate_name\]} {Another item with this name exists \
-                                                   already in this folder}}
+                       already in this folder}}
           }}
         }
   FileForm instproc tidy {} {
@@ -504,9 +517,11 @@
 	  description}}
         {validate {
           {upload_file {\[::xowiki::validate_file\]} {For new entries, \
-                                                          a upload file must be provided}}
+                       a upload file must be provided}}
           {name {\[::xowiki::validate_name\]} {Another item with this name exists \
-                                                   already in this folder}}
+                       already in this folder}}
+          {page_order {\[::xowiki::validate_form_field page_order\]} {Page Order invalid; 
+                       might only contain upper and lower case letters, underscore, digits and dots}}
           {duration {\[::xowiki::validate_duration\]} {Check duration and provide default}}
           }}
       }
@@ -788,8 +803,10 @@
         {name {\[::xowiki::validate_name\]} {Another item with this name exists \
                                                  already in this folder}}
         {text {\[::xowiki::validate_form_text\]} {Form must contain a valid template}}
+        {page_order {\[::xowiki::validate_form_field page_order\]} {Page Order invalid; 
+               might only contain upper and lower case letters, underscore, digits and dots}}
         {form {\[::xowiki::validate_form_form\]} {Form must contain a toplevel HTML form element}}
-        {form_constraints {\[::xowiki::validate_form_constraints\]} {Invalid form constraints}}
+        {form_constraints {\[::xowiki::validate_form_field form_constraints\]} {Invalid form constraints}}
       }}
     }
   
Index: openacs-4/packages/xowiki/tcl/xowiki-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-procs.tcl,v
diff -u -r1.316 -r1.317
--- openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	29 Dec 2008 02:42:40 -0000	1.316
+++ openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	30 Dec 2008 16:24:12 -0000	1.317
@@ -1377,6 +1377,7 @@
     if {[my exists page_order]} {
       set page_order [string trim $value " ."]
       my page_order $page_order
+      return [expr {![regexp {[^0-9a-zA-Z_]} $page_order]}]
     }
     return 1
   }