Add MatchObject.groups which got messed up during a merge.
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index c3323df..73ed56f 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -871,6 +871,9 @@
>>> m.group(1) # Returns only the last match.
'c3'
+
+ .. method:: MatchObject.groups(default=None)
+
Return a tuple containing all the subgroups of the match, from 1 up to however
many groups are in the pattern. The *default* argument is used for groups that
did not participate in the match; it defaults to ``None``. (Incompatibility