Issue #3382. float 'F' formatting no longer maps to 'f'. This only affects nan and inf.
diff --git a/Misc/NEWS b/Misc/NEWS
index 35490d2..45bd9e7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
Core and Builtins
-----------------
+- Issue #3382: float.__format__, complex.__format__, and %-formatting
+ no longer map 'F' to 'f'. Because of issue #5859 (below), this only
+ affects nan -> NAN and inf -> INF.
+
- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
in all operations, including splitdrive, split, etc. splitunc() now issues
a PendingDeprecation warning.
@@ -45,7 +49,7 @@
restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
12.34 no longer raise an exception.
-- Issue #1588: Add complex.__format__. For example,
+- Issue #1588: Add complex.__format__. For example,
format(complex(1, 2./3), '.5') now produces a sensible result.
- Issue #5864: Fix empty format code formatting for floats so that it