From efd9a742f9e5fce8aa8c5c8ead82bb8efaa31b9c Mon Sep 17 00:00:00 2001
From: Libo Song <lsong@hubspot.com>
Date: Tue, 12 Dec 2023 11:12:39 -0500
Subject: [PATCH] Fix bad tag token.

---
 src/main/java/com/hubspot/jinjava/tree/parse/TagToken.java | 7 +++++++
 .../java/com/hubspot/jinjava/tree/parse/TagTokenTest.java  | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/src/main/java/com/hubspot/jinjava/tree/parse/TagToken.java b/src/main/java/com/hubspot/jinjava/tree/parse/TagToken.java
index d73c33b22..14a11ff49 100644
--- a/src/main/java/com/hubspot/jinjava/tree/parse/TagToken.java
+++ b/src/main/java/com/hubspot/jinjava/tree/parse/TagToken.java
@@ -44,6 +44,13 @@ public int getType() {
   @Override
   protected void parse() {
     if (image.length() < 4) {
+      if (image.equals("{%}")) {
+        tagName = "";
+        rawTagName = "";
+        helpers = "";
+        content = "";
+        return;
+      }
       throw new TemplateSyntaxException(
         image,
         "Malformed tag token",
diff --git a/src/test/java/com/hubspot/jinjava/tree/parse/TagTokenTest.java b/src/test/java/com/hubspot/jinjava/tree/parse/TagTokenTest.java
index 83bd6b96d..5bc0b8962 100644
--- a/src/test/java/com/hubspot/jinjava/tree/parse/TagTokenTest.java
+++ b/src/test/java/com/hubspot/jinjava/tree/parse/TagTokenTest.java
@@ -38,4 +38,11 @@ public void itThrowsParseErrorWhenMalformed() {
       assertThat(e).hasMessageContaining("Malformed");
     }
   }
+
+  @Test
+  public void testParseEmptyTagWithHelpers() {
+    TagToken t = new TagToken("{%}", 1, 2, SYMBOLS);
+    assertThat(t.getTagName()).isEqualTo("");
+    assertThat(t.getHelpers().trim()).isEqualTo("");
+  }
 }