--- Prefs.pm.orig	2005-01-22 01:37:18.000000000 -0200
+++ Prefs.pm	2005-01-22 14:40:38.000000000 -0200
@@ -669,7 +669,22 @@
 {
     my $textRef = \$_[0];
 
+    # picks LANGWEB, maybe from session. If we do have a defined LANGWEB,
+    # use it. This makes the session value (set by SesionPlugin)
+    # have precedence over the preferences one (set by * Set LANGWEB = ...)
+    my $langweb = getPreferencesValue("LANGWEB");
+
+    # substitute LANGWEB
+    if ($langweb) {
+        $$textRef =~ s/%LANGWEB%/$langweb/ge;
+    }
+
     $requestPrefs->replacePreferencesTags($$textRef);
+
+    # substitute LANGWEB again, because preferences can (they should) use it.
+    if ($langweb) {
+        $$textRef =~ s/%LANGWEB%/$langweb/ge;
+    }
     
     if( $$textRef =~ /\%VAR{(.*?)}\%/ ) {
         # handle web specific variables