Handle lower-case hex digits in CJK ideograph escapes

Author: SnoopJ

Lib/test/test_ucn.py

@@ -238,6 +238,7 @@ def test_issue16335(self, size):
 
     def test_issue80667(self):
         self.assertEqual(str(b'\\N{cjK UniFIeD idEogRAph-732B}', "unicode-escape"), '猫')
+        self.assertEqual(str(b'\\N{cjK UniFIeD idEogRAph-732b}', "unicode-escape"), '猫')
         self.assertEqual(str(b'\\N{haNGul SYllABle WAe}', "unicode-escape"), '왜')
 
 

Modules/unicodedata.c

@@ -1246,10 +1246,11 @@ _getcode(PyObject* self,
             return 0;
         while (namelen--) {
             v *= 16;
-            if (*name >= '0' && *name <= '9')
-                v += *name - '0';
-            else if (*name >= 'A' && *name <= 'F')
-                v += *name - 'A' + 10;
+            Py_UCS1 c = Py_TOUPPER(*name);
+            if (c >= '0' && c <= '9')
+                v += c - '0';
+            else if (c >= 'A' && c <= 'F')
+                v += c - 'A' + 10;
             else
                 return 0;
             name++;