Add tracker searches

src/search.js

@@ -27,7 +27,10 @@ export function search_criteria(text) {
       }
       const [field, value] = t.split(op);
       if (op == ":") {
-        return { op: "ilike", field, value: `%${t}%` };
+        if (field == "tracker") {
+          return { op: "has", field: "tracker_urls", value };
+        }
+        return { op: "ilike", field, value };
       }
       if (!isNaN(numeral(value).value())) {
         return {

src/ui/search_help.js

@@ -28,7 +28,9 @@ function SearchHelp(props) {
     "throttle_down": "throttle down in bits/sec",
     "transferred_up": "total transfer up in bits/sec",
     "transferred_down": "total transfer down in bits/sec",
+    "tracker": "tracker url",
     "peers": "number of peers",
+    "trackers": "number of trackers",
     "files": "number of files",
   };
 
@@ -70,6 +72,7 @@ function SearchHelp(props) {
         <li>{searchLink("files>1")}</li>
         <li>{searchLink("files==1")}</li>
         <li>{searchLink("progress<0.1")}</li>
+        <li>{searchLink("tracker:archlinux.org")}</li>
       </ul>
     </div>
   );