+OPTIONS
+-------
+
+--summary::
+ In addition to branch names, populate the log message with
+ one-line descriptions from the actual commits that are being
+ merged.
+
+--no-summary::
+ Do not list one-line descriptions from the actual commits being
+ merged.
+
+--file <file>, -F <file>::
+ Take the list of merged objects from <file> instead of
+ stdin.
+
+CONFIGURATION
+-------------
+
+merge.summary::
+ Whether to include summaries of merged commits in newly
+ merge commit messages. False by default.