~/.gitconfig
[merge] tool = kdiff3
[mergetool "kdiff3"] cmd = "D:\\KDiff3\\kdiff3" "$BASE" "$LOCAL" "$REMOTE" -o "$MERGED" keepBackup = false trustExitCode = false
[diff] tool = kdiff3 guitool = kdiff3
[difftool "kdiff3"] cmd = "D:\\KDiff3\\kdiff3" "$LOCAL" "$REMOTE" keepBackup = false trustExitCode = false
[mergetool] keepBackup = false
abc