#12888: Fix a bug in HTMLParser.unescape that prevented it to escape more than 128 entities.  Patch by Peter Otten.
diff --git a/Lib/test/test_htmlparser.py b/Lib/test/test_htmlparser.py
index 637ab01..d45e453 100644
--- a/Lib/test/test_htmlparser.py
+++ b/Lib/test/test_htmlparser.py
@@ -377,7 +377,8 @@
         p = html.parser.HTMLParser()
         self.assertEqual(p.unescape('&#bad;'),'&#bad;')
         self.assertEqual(p.unescape('&'),'&')
-
+        # see #12888
+        self.assertEqual(p.unescape('{ ' * 1050), '{ ' * 1050)
 
 def test_main():
     support.run_unittest(HTMLParserTestCase, HTMLParserTolerantTestCase)