--- a/tests/test.py	Fri May 07 10:36:47 2021 +0200
+++ b/tests/test.py	Fri May 07 10:43:46 2021 +0200
@@ -782,8 +782,17 @@
             self._cfg.getvar_s("events.qc-2021%x2e1-5G-summit.xref.%x23"))
 
     def test_quoting_and_unquoting_are_inverse(self):
-        for c in """abc09'"#:|%.{}[]/""":
-            self.assertEqual(c, self._cfg.unquote(self._cfg.quote(c)))
+        for c in """%.:#|"'{}[]""":
+            qc = self._cfg.quote(c)
+            self.assertTrue(qc.startswith("%x") and len(qc) == 4)
+            self.assertEqual(c, self._cfg.unquote(qc))
+
+    def test_quoting_and_unquoting_are_identical(self):
+        # other characters
+        for c in """abc09/""":
+            qc = self._cfg.quote(c)
+            self.assertEqual(c, qc)
+            self.assertEqual(c, self._cfg.unquote(qc))
 
     def test_namespace_quoting(self):
         v1 = self._cfg.getvar("PY:version")