Issue 4474: On platforms with sizeof(wchar_t) == 4 and
sizeof(Py_UNICODE) == 2, PyUnicode_FromWideChar now converts
each character outside the BMP to the appropriate surrogate pair.
Thanks Victor Stinner for the patch.
(backport of r70452 from py3k to trunk)
diff --git a/Misc/NEWS b/Misc/NEWS
index c59ba94..9ac44f9 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
Core and Builtins
-----------------
+- Issue #4474: PyUnicode_FromWideChar now converts characters outside
+ the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
+ and sizeof(Py_UNICODE) == 2.
+
- Issue #5237: Allow auto-numbered fields in str.format(). For
example: '{} {}'.format(1, 2) == '1 2'.