Index: mozilla/webtools/bugzilla/Bugzilla/Search.pm
===================================================================
RCS file: /cvsroot/mozilla/webtools/bugzilla/Bugzilla/Search.pm,v
retrieving revision 1.146
diff -up -r1.146 mozilla/webtools/bugzilla/Bugzilla/Search.pm
--- mozilla/webtools/bugzilla/Bugzilla/Search.pm
+++ mozilla/webtools/bugzilla/Bugzilla/Search.pm
@@ -114,6 +114,7 @@ sub init {
     my @groupby;
     @fields = @$fieldsref if $fieldsref;
     my @specialchart;
+    my @specialchartnegate;
     my @andlist;
     my %chartfields;
 
@@ -272,7 +273,10 @@ sub init {
                 push(@clist, "commenter", $type, $email);
         }
         if (@clist) {
-            push(@specialchart, \@clist);
+            my $slot = push(@specialchart, \@clist);
+            if ($params->param("negate$id") {
+                $specialchartnegate[$slot - 1] = 1;
+            }
         } else {
             ThrowUserError("missing_email_type",
                            { email => $email });
@@ -1176,6 +1180,9 @@ sub init {
     my $row = 0;
     foreach my $ref (@specialchart) {
         my $col = 0;
+        if (defined $specialchartnegate[$row]) {
+            $params->param("negate$chart-$row", 1);
+        }
         while (@$ref) {
             $params->param("field$chart-$row-$col", shift(@$ref));
             $params->param("type$chart-$row-$col", shift(@$ref));
Index: mozilla/webtools/bugzilla/template/en/default/search/form.html.tmpl
===================================================================
RCS file: /cvsroot/mozilla/webtools/bugzilla/template/en/default/search/form.html.tmpl,v
retrieving revision 1.49
diff -up -r1.49 mozilla/webtools/bugzilla/template/en/default/search/form.html.tmpl
--- mozilla/webtools/bugzilla/template/en/default/search/form.html.tmpl
+++ mozilla/webtools/bugzilla/template/en/default/search/form.html.tmpl
@@ -453,7 +453,10 @@ function doOnSelectProduct(selectmode) {
 <table cellspacing="0" cellpadding="0">
   <tr>
     <td>
-      Any one of:
+      <select name="negate[% n %]">
+        <option [% " selected" IF !default.negate.$n %]>Any
+        <option value="1" [% " selected" IF default.negate.$n %]>None
+      </select> of:
     </td>
   </tr>
   <tr>