add 'nonstd' escape modifier

NEWS

@@ -1,3 +1,5 @@
+  - add 'nonstd' to escape modifier for escaping non-std chars,
+    such as ms doc quote (Monte)
   - adjusted textformat to not output wrap chars after last para
     (Monte)
   - use tempnam() instead of unqid() to create better temporary files in

libs/plugins/modifier.escape.php

@@ -64,6 +64,21 @@ function smarty_modifier_escape($string, $esc_type = 'html')
             // safe way to display e-mail address on a web page
             return str_replace(array('@', '.'),array(' [AT] ', ' [DOT] '), $string);
             
+        case 'nonstd':
+           // escape non-standard chars, such as ms document quotes
+           $_res = '';
+           for($_i = 0, $_len = strlen($string); $_i < $_len; $_i++) {
+               $_ord = ord($string{$_i});
+               // non-standard char, escape it
+               if($_ord >= 126){
+                   $_res .= '&#' . $_ord . ';';
+               }
+               else {
+                   $_res .= $string{$_i};
+               }
+           }
+           return $_res;
+
         default:
             return $string;
     }