Issue #5864: format(1234.5, '.4') gives misleading result
(Backport of r72109 from py3k.)
diff --git a/Misc/NEWS b/Misc/NEWS
index 3cd5094..35846ea 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
Core and Builtins
-----------------
+- Issue #5864: Fix empty format code formatting for floats so that it
+ never gives more than the requested number of significant digits.
+
- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.