SequenceMatcher(None, [], []).get_grouped_opcodes() now returns a generator
that behaves as if both lists has an empty string in each of them.
Closes bug #979794 (and duplicate bug #980117).
diff --git a/Misc/NEWS b/Misc/NEWS
index 73abaa4..507c7a5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -29,6 +29,10 @@
Library
-------
+- Bug #979794: difflib.get_grouped_opcodes() now handles the case of when it is
+ comparing two empty lists. Was affecting both context_diff() and
+ unified_diff(). Was also a duplicate of bug #980117.
+
- Bug #980938: smtplib now prints debug output to sys.stderr.
- Bug #930024: posixpath.realpath() now handles infinite loops in symlinks by