Bug 238544: Emit appropriate error if content and matches are used in

Bugzilla/Search.pm

@@ -478,6 +478,9 @@ sub init {
                  push(@fields, $select_term);
              }
          },
+         "^content," => sub {
+             ThrowUserError("search_content_without_matches");
+         },
          "^commenter,(?:equals|anyexact),(%\\w+%)" => sub {
              my $match = pronoun($1, $user);
              my $chartseq = $chartid;
@@ -828,6 +831,9 @@ sub init {
          ",lessthan" => sub {
              $term = "$ff < $q";
          },
+         ",matches" => sub {
+             ThrowUserError("search_content_without_matches");
+         },
          ",greaterthan" => sub {
              $term = "$ff > $q";
          },

template/en/default/global/user-error.html.tmpl

@@ -691,6 +691,12 @@
     [% title = "Access Denied" %]
     You do not have the permissions necessary to run a sanity check.
 
+  [% ELSIF error == "search_content_without_matches" %]
+    [% title = "Illegal Search" %]
+    The "content" field can only be used with "matches" search 
+    and the "matches" search can only be used with the "content"
+    field.
+
   [% ELSIF error == "series_already_exists" %]
     [% title = "Series Already Exists" %]
       A series named <em>[% series.category FILTER html %] /