Merged revisions 71947 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r71947 | martin.v.loewis | 2009-04-26 02:53:18 +0200 (So, 26 Apr 2009) | 3 lines

  Issue #4971: Fix titlecase for characters that are their own
  titlecase, but not their own uppercase.
........

Lib/test/test_unicodedata.py

@@ -20,7 +20,7 @@ encoding = 'utf-8'
 class UnicodeMethodsTest(unittest.TestCase):
 
     # update this, if the database changes
-    expectedchecksum = 'b7db9b5f1d804976fa921d2009cbef6f025620c1'
+    expectedchecksum = '6ec65b65835614ec00634c674bba0e50cd32c189'
 
     def test_method_checksum(self):
         h = hashlib.sha1()
@@ -271,6 +271,11 @@ class UnicodeMiscTest(UnicodeDatabaseTest):
             [0]
         )
 
+    def test_buf_4971(self):
+        # LETTER DZ WITH CARON: DZ, Dz, dz
+        self.assertEqual("\u01c4".title(), "\u01c5")
+        self.assertEqual("\u01c5".title(), "\u01c5")
+        self.assertEqual("\u01c6".title(), "\u01c5")
 
 def test_main():
     test.support.run_unittest(

Misc/NEWS

@@ -12,6 +12,9 @@ What's New in Python 3.1 beta 1?
 Core and Builtins
 -----------------
 
+- Issue #4971: Fix titlecase for characters that are their own
+  titlecase, but not their own uppercase.
+
 - Issue #5283: Setting __class__ in __del__ caused a segfault.
 
 - Issue #5816: complex(repr(z)) now recovers z exactly, even when

Objects/unicodectype.c

@@ -79,12 +79,7 @@ int _PyUnicode_IsLinebreak(register const Py_UNICODE ch)
 Py_UNICODE _PyUnicode_ToTitlecase(register Py_UNICODE ch)
 {
     const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-    int delta;
-
-    if (ctype->title)
-        delta = ctype->title;
-    else
-	delta = ctype->upper;
+    int delta = ctype->title;
 
     if (ctype->flags & NODELTA_MASK)
 	return delta;