MAGETWO-99669: [Magento Cloud] Error on searching for < symbol

Author: dhorytskyi

app/code/Magento/Search/Model/ResourceModel/SynonymReader.php

@@ -106,7 +106,7 @@ private function queryByPhrase($phrase)
      */
     private function escapePhrase(string $phrase): string
     {
-        return preg_replace('/@+|[@+-]+$/', '', $phrase);
+        return preg_replace('/@+|[@+-]+$|[<>]/', '', $phrase);
     }
 
     /**

dev/tests/integration/testsuite/Magento/Search/Model/SynonymReaderTest.php

@@ -64,6 +64,15 @@ public static function loadByPhraseDataProvider()
             [
                 'query_value+@', []
             ],
+            [
+                '<', []
+            ],
+            [
+                '>', []
+            ],
+            [
+                '<english>', [['synonyms' => 'british,english', 'store_id' => 1, 'website_id' => 0]]
+            ],
         ];
     }