updated behaviour, the environment variable `GIT_MERGE_AUTOEDIT` can be
set to `no` at the beginning of them.
+--cleanup=<mode>::
+ This option determines how the merge message will be cleaned up before
+ commiting. See linkgit:git-commit[1] for more details. In addition, if
+ the '<mode>' is given a value of `scissors`, scissors will be appended
+ to `MERGE_MSG` before being passed on to the commit machinery in the
+ case of a merge conflict.
+
--ff::
When the merge resolves as a fast-forward, only update the branch
pointer, without creating a merge commit. This is the default