From 4e24d6ee17c81f7a426c2aaa22d951b9c9688197 Mon Sep 17 00:00:00 2001
From: Samuel Colvin <s@muelcolvin.com>
Date: Sun, 2 Jul 2017 11:26:29 +0100
Subject: [PATCH] correct error for badly closed tag

---
 chevron/tokenizer.py | 6 +++++-
 test_spec.py         | 8 ++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/chevron/tokenizer.py b/chevron/tokenizer.py
index ea3f6b2..ed5799e 100644
--- a/chevron/tokenizer.py
+++ b/chevron/tokenizer.py
@@ -79,7 +79,11 @@ def parse_tag(template, l_del, r_del):
     }
 
     # Get the tag
-    tag, template = template.split(r_del, 1)
+    try:
+        tag, template = template.split(r_del, 1)
+    except ValueError:
+        raise ChevronError('unclosed tag '
+                           'at line {0}'.format(_CURRENT_LINE))
 
     # Find the type meaning of the first character
     tag_type = tag_types.get(tag[0], 'variable')
diff --git a/test_spec.py b/test_spec.py
index 4fb5d14..5b34811 100755
--- a/test_spec.py
+++ b/test_spec.py
@@ -194,6 +194,14 @@ class ExpandedCoverage(unittest.TestCase):
 
         self.assertEqual(result, expected)
 
+    def test_closing_tag_only(self):
+        args = {
+            'template': '{{ foo } bar',
+            'data': {'foo': 'xx'}
+        }
+
+        self.assertRaises(chevron.ChevronError, chevron.render, **args)
+
 
 # Run unit tests from command line
 if __name__ == "__main__":
-- 
2.47.3