feat(log): allow to disable git.log.order

docs/Config.md

@@ -74,7 +74,7 @@ git:
     # extra args passed to `git merge`, e.g. --no-ff
     args: ''
   log:
-    # one of date-order, author-date-order, topo-order.
+    # one of date-order, author-date-order, topo-order or default.
     # topo-order makes it easier to read the git log graph, but commits may not
     # appear chronologically. See https://git-scm.com/docs/git-log#_commit_ordering
     order: 'topo-order'

pkg/commands/git_commands/commit_loader.go

@@ -426,7 +426,10 @@ func (self *CommitLoader) getLogCmd(opts GetCommitsOptions) oscommands.ICmdObj {
 
 	config := self.UserConfig.Git.Log
 
-	orderFlag := "--" + config.Order
+	orderFlag := ""
+	if config.Order != "default" {
+		orderFlag = " --" + config.Order
+	}
 	allFlag := ""
 	if opts.All {
 		allFlag = " --all"

pkg/commands/git_commands/commit_loader_test.go

@@ -27,6 +27,7 @@ func TestGetCommits(t *testing.T) {
 		runner            *oscommands.FakeCmdObjRunner
 		expectedCommits   []*models.Commit
 		expectedError     error
+		logOrder          string
 		rebaseMode        enums.RebaseMode
 		currentBranchName string
 		opts              GetCommitsOptions
@@ -35,6 +36,7 @@ func TestGetCommits(t *testing.T) {
 	scenarios := []scenario{
 		{
 			testName:          "should return no commits if there are none",
+			logOrder:          "topo-order",
 			rebaseMode:        enums.REBASE_MODE_NONE,
 			currentBranchName: "master",
 			opts:              GetCommitsOptions{RefName: "HEAD", IncludeRebaseCommits: false},
@@ -47,6 +49,7 @@ func TestGetCommits(t *testing.T) {
 		},
 		{
 			testName:          "should return commits if they are present",
+			logOrder:          "topo-order",
 			rebaseMode:        enums.REBASE_MODE_NONE,
 			currentBranchName: "master",
 			opts:              GetCommitsOptions{RefName: "HEAD", IncludeRebaseCommits: false},
@@ -174,13 +177,29 @@ func TestGetCommits(t *testing.T) {
 			},
 			expectedError: nil,
 		},
+		{
+			testName:          "should not specify order if `log.order` is `default`",
+			logOrder:          "default",
+			rebaseMode:        enums.REBASE_MODE_NONE,
+			currentBranchName: "master",
+			opts:              GetCommitsOptions{RefName: "HEAD", IncludeRebaseCommits: false},
+			runner: oscommands.NewFakeRunner(t).
+				Expect(`git merge-base "HEAD" "HEAD"@{u}`, "b21997d6b4cbdf84b149d8e6a2c4d06a8e9ec164", nil).
+				Expect(`git -c log.showSignature=false log "HEAD" --oneline --pretty=format:"%H%x00%at%x00%aN%x00%ae%x00%d%x00%p%x00%s" --abbrev=40`, "", nil),
+
+			expectedCommits: []*models.Commit{},
+			expectedError:   nil,
+		},
 	}
 
 	for _, scenario := range scenarios {
 		scenario := scenario
 		t.Run(scenario.testName, func(t *testing.T) {
+			common := utils.NewDummyCommon()
+			common.UserConfig.Git.Log.Order = scenario.logOrder
+
 			builder := &CommitLoader{
-				Common: utils.NewDummyCommon(),
+				Common: common,
 				cmd:    oscommands.NewDummyCmdObjBuilder(scenario.runner),
 				getCurrentBranchInfo: func() (BranchInfo, error) {
 					return BranchInfo{RefName: scenario.currentBranchName, DisplayName: scenario.currentBranchName, DetachedHead: false}, nil