Allow rewording the head commit during interactive rebase

pkg/commands/git_commands/rebase.go

@@ -34,7 +34,7 @@ func NewRebaseCommands(
 }
 
 func (self *RebaseCommands) RewordCommit(commits []*models.Commit, index int, message string) error {
-	if index == 0 {
+	if models.IsHeadCommit(commits, index) {
 		// we've selected the top commit so no rebase is required
 		return self.commit.RewordLastCommit(message)
 	}

pkg/commands/models/commit.go

@@ -65,3 +65,7 @@ func (c *Commit) IsMerge() bool {
 func (c *Commit) IsTODO() bool {
 	return c.Action != ""
 }
+
+func IsHeadCommit(commits []*Commit, index int) bool {
+	return !commits[index].IsTODO() && (index == 0 || commits[index-1].IsTODO())
+}

pkg/gui/controllers/local_commits_controller.go

@@ -229,7 +229,7 @@ func (self *LocalCommitsController) reword(commit *models.Commit) error {
 func (self *LocalCommitsController) doRewordEditor() error {
 	self.c.LogAction(self.c.Tr.Actions.RewordCommit)
 
-	if self.context().GetSelectedLineIdx() == 0 {
+	if self.isHeadCommit() {
 		return self.c.RunSubprocessAndRefresh(self.os.Cmd.New("git commit --allow-empty --amend --only"))
 	}
 
@@ -728,3 +728,7 @@ func (self *LocalCommitsController) context() *context.LocalCommitsContext {
 func (self *LocalCommitsController) paste() error {
 	return self.helpers.CherryPick.Paste()
 }
+
+func (self *LocalCommitsController) isHeadCommit() bool {
+	return models.IsHeadCommit(self.model.Commits, self.context().GetSelectedLineIdx())
+}

pkg/integration/tests/interactive_rebase/reword_you_are_here_commit.go

@@ -0,0 +1,47 @@
+package interactive_rebase
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var RewordYouAreHereCommit = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Rewords the current HEAD commit in an interactive rebase",
+	ExtraCmdArgs: "",
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.
+			CreateNCommits(3)
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			Focus().
+			Lines(
+				Contains("commit 03").IsSelected(),
+				Contains("commit 02"),
+				Contains("commit 01"),
+			).
+			NavigateToLine(Contains("commit 02")).
+			Press(keys.Universal.Edit).
+			Lines(
+				Contains("commit 03"),
+				Contains("<-- YOU ARE HERE --- commit 02").IsSelected(),
+				Contains("commit 01"),
+			).
+			Press(keys.Commits.RenameCommit).
+			Tap(func() {
+				t.ExpectPopup().Prompt().
+					Title(Equals("reword commit")).
+					InitialText(Equals("commit 02")).
+					Clear().
+					Type("renamed 02").
+					Confirm()
+			}).
+			Lines(
+				Contains("commit 03"),
+				Contains("<-- YOU ARE HERE --- renamed 02").IsSelected(),
+				Contains("commit 01"),
+			)
+	},
+})

pkg/integration/tests/interactive_rebase/reword_you_are_here_commit_with_editor.go

@@ -0,0 +1,47 @@
+package interactive_rebase
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var RewordYouAreHereCommitWithEditor = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Rewords the current HEAD commit in an interactive rebase with editor",
+	ExtraCmdArgs: "",
+	Skip:         false,
+	SetupConfig: func(config *config.AppConfig) {
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.
+			CreateNCommits(3).
+			SetConfig("core.editor", "sh -c 'echo renamed 02 >.git/COMMIT_EDITMSG'")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			Focus().
+			Lines(
+				Contains("commit 03").IsSelected(),
+				Contains("commit 02"),
+				Contains("commit 01"),
+			).
+			NavigateToLine(Contains("commit 02")).
+			Press(keys.Universal.Edit).
+			Lines(
+				Contains("commit 03"),
+				Contains("<-- YOU ARE HERE --- commit 02").IsSelected(),
+				Contains("commit 01"),
+			).
+			Press(keys.Commits.RenameCommitWithEditor).
+			Tap(func() {
+				t.ExpectPopup().Confirmation().
+					Title(Equals("Reword in editor")).
+					Content(Contains("Are you sure you want to reword this commit in your editor?")).
+					Confirm()
+			}).
+			Lines(
+				Contains("commit 03"),
+				Contains("<-- YOU ARE HERE --- renamed 02").IsSelected(),
+				Contains("commit 01"),
+			)
+	},
+})

pkg/integration/tests/test_list.go

@@ -90,6 +90,8 @@ var tests = []*components.IntegrationTest{
 	interactive_rebase.Rebase,
 	interactive_rebase.RewordFirstCommit,
 	interactive_rebase.RewordLastCommit,
+	interactive_rebase.RewordYouAreHereCommit,
+	interactive_rebase.RewordYouAreHereCommitWithEditor,
 	interactive_rebase.SquashDownFirstCommit,
 	interactive_rebase.SquashDownSecondCommit,
 	interactive_rebase.SquashFixupsAboveFirstCommit,