current `HEAD` is already up to date or the merge can be
resolved as a fast-forward.
+-S[<keyid>]::
+--gpg-sign[=<keyid>]::
+ GPG-sign the resulting merge commit. The `keyid` argument is
+ optional and defaults to the committer identity; if specified,
+ it must be stuck to the option without a space.
+
--log[=<n>]::
--no-log::
In addition to branch names, populate the log message with
With --no-log do not list one-line descriptions from the
actual commits being merged.
+--signoff::
+--no-signoff::
+ Add Signed-off-by line by the committer at the end of the commit
+ log message. The meaning of a signoff depends on the project,
+ but it typically certifies that committer has
+ the rights to submit this work under the same license and
+ agrees to a Developer Certificate of Origin
+ (see http://developercertificate.org/ for more information).
++
+With --no-signoff do not add a Signed-off-by line.
--stat::
-n::