merge-config.txt

merge.conflictstyle::
Specify the style in which conflicted hunks are written out to
working tree files upon merge. The default is "merge", which
shows a `<<<<<<<` conflict marker, changes made by one side,
a `=======` marker, changes made by the other side, and then
a `>>>>>>>` marker. An alternate style, "diff3", adds a `|||||||`
marker and the original text before the `=======` marker.

merge.defaultToUpstream::
If merge is called without any commit argument, merge the upstream
branches configured for the current branch by using their last
observed values stored in their remote-tracking branches.
The values of the `branch.<current branch>.merge` that name the
branches at the remote named by `branch.<current branch>.remote`
are consulted, and then they are mapped via `remote.<remote>.fetch`
to their corresponding remote-tracking branches, and the tips of
these tracking branches are merged.

merge.ff::
By default, Git does not create an extra merge commit when merging
a commit that is a descendant of the current commit. Instead, the
tip of the current branch is fast-forwarded. When set to `false`,
this variable tells Git to create an extra merge commit in such
a case (equivalent to giving the `--no-ff` option from the command
line). When set to `only`, only such fast-forward merges are
allowed (equivalent to giving the `--ff-only` option from the
command line).

merge.log::
In addition to branch names, populate the log message with at
most the specified number of one-line descriptions from the
actual commits that are being merged. Defaults to false, and
true is a synonym for 20.

merge.renameLimit::
The number of files to consider when performing rename detection
during a merge; if not specified, defaults to the value of
diff.renameLimit.

merge.renormalize::
Tell Git that canonical representation of files in the
repository has changed over time (e.g. earlier commits record
text files with CRLF line endings, but recent ones use LF line
endings). In such a repository, Git can convert the data
recorded in commits to a canonical form before performing a
merge to reduce unnecessary conflicts. For more information,
see section "Merging branches with differing checkin/checkout
attributes" in linkgit:gitattributes[5].

merge.stat::
Whether to print the diffstat between ORIG_HEAD and the merge result
at the end of the merge. True by default.

merge.tool::
Controls which merge tool is used by linkgit:git-mergetool[1].
The list below shows the valid built-in values.
Any other value is treated as a custom merge tool and requires
that a corresponding mergetool.<tool>.cmd variable is defined.

include::mergetools-merge.txt[]

merge.verbosity::
Controls the amount of output shown by the recursive merge
strategy. Level 0 outputs nothing except a final error
message if conflicts were detected. Level 1 outputs only
conflicts, 2 outputs conflicts and file changes. Level 5 and
above outputs debugging information. The default is level 2.
Can be overridden by the 'GIT_MERGE_VERBOSITY' environment variable.

merge.<driver>.name::
Defines a human-readable name for a custom low-level
merge driver. See linkgit:gitattributes[5] for details.

merge.<driver>.driver::
Defines the command that implements a custom low-level
merge driver. See linkgit:gitattributes[5] for details.

merge.<driver>.recursive::
Names a low-level merge driver to be used when
performing an internal merge between common ancestors.
See linkgit:gitattributes[5] for details.