Add a "Mark commit as base commit for rebase" command

This allows to do the equivalent of "git rebase --onto <target> <base>", by
first marking the <base> commit with the new command, and then selecting the
target branch and invoking the usual rebase command there.

docs/keybindings/Keybindings_en.md

@@ -84,6 +84,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: Move commit down one
   <kbd>&lt;c-k&gt;</kbd>: Move commit up one
   <kbd>v</kbd>: Paste commits (cherry-pick)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: Amend commit with staged changes
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: Revert commit

docs/keybindings/Keybindings_ja.md

@@ -103,6 +103,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: コミットを1つ下に移動
   <kbd>&lt;c-k&gt;</kbd>: コミットを1つ上に移動
   <kbd>v</kbd>: コミットを貼り付け (cherry-pick)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: ステージされた変更でamendコミット
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: コミットをrevert

docs/keybindings/Keybindings_ko.md

@@ -265,6 +265,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: 커밋을 1개 아래로 이동
   <kbd>&lt;c-k&gt;</kbd>: 커밋을 1개 위로 이동
   <kbd>v</kbd>: 커밋을 붙여넣기 (cherry-pick)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: Amend commit with staged changes
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: 커밋 되돌리기

docs/keybindings/Keybindings_nl.md

@@ -143,6 +143,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: Verplaats commit 1 naar beneden
   <kbd>&lt;c-k&gt;</kbd>: Verplaats commit 1 naar boven
   <kbd>v</kbd>: Plak commits (cherry-pick)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: Wijzig commit met staged veranderingen
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: Commit ongedaan maken

docs/keybindings/Keybindings_pl.md

@@ -69,6 +69,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: Przenieś commit 1 w dół
   <kbd>&lt;c-k&gt;</kbd>: Przenieś commit 1 w górę
   <kbd>v</kbd>: Wklej commity (przebieranie)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: Popraw commit zmianami z poczekalni
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: Odwróć commit

docs/keybindings/Keybindings_ru.md

@@ -151,6 +151,7 @@ _Связки клавиш_
   <kbd>&lt;c-j&gt;</kbd>: Переместить коммит вниз на один
   <kbd>&lt;c-k&gt;</kbd>: Переместить коммит вверх на один
   <kbd>v</kbd>: Вставить отобранные коммиты (cherry-pick)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: Править последний коммит с проиндексированными изменениями
   <kbd>a</kbd>: Установить/убрать автора коммита
   <kbd>t</kbd>: Отменить коммит

docs/keybindings/Keybindings_zh-CN.md

@@ -147,6 +147,7 @@ _Legend: `<c-b>` means ctrl+b, `<a-b>` means alt+b, `B` means shift+b_
   <kbd>&lt;c-j&gt;</kbd>: 下移提交
   <kbd>&lt;c-k&gt;</kbd>: 上移提交
   <kbd>v</kbd>: 粘贴提交（拣选）
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: 用已暂存的更改来修补提交
   <kbd>a</kbd>: Set/Reset commit author
   <kbd>t</kbd>: 还原提交

docs/keybindings/Keybindings_zh-TW.md

@@ -191,6 +191,7 @@ _說明：`<c-b>` 表示 Ctrl+B、`<a-b>` 表示 Alt+B，`B`表示 Shift+B_
   <kbd>&lt;c-j&gt;</kbd>: 向下移動提交
   <kbd>&lt;c-k&gt;</kbd>: 向上移動提交
   <kbd>v</kbd>: 貼上提交 (揀選)
+  <kbd>B</kbd>: Mark commit as base commit for rebase
   <kbd>A</kbd>: 使用已預存的更改修正提交
   <kbd>a</kbd>: 設置/重設提交作者
   <kbd>t</kbd>: 還原提交

pkg/commands/git_commands/rebase.go

@@ -156,6 +156,15 @@ func (self *RebaseCommands) EditRebase(branchRef string) error {
 	}).Run()
 }
 
+func (self *RebaseCommands) EditRebaseFromBaseCommit(targetBranchName string, baseCommit string) error {
+	self.os.LogCommand(fmt.Sprintf("Beginning interactive rebase from '%s' onto '%s", baseCommit, targetBranchName), false)
+	return self.PrepareInteractiveRebaseCommand(PrepareInteractiveRebaseCommandOpts{
+		baseShaOrRoot: baseCommit,
+		onto:          targetBranchName,
+		instruction:   daemon.NewInsertBreakInstruction(),
+	}).Run()
+}
+
 func logTodoChanges(changes []daemon.ChangeTodoAction) string {
 	changeTodoStr := strings.Join(lo.Map(changes, func(c daemon.ChangeTodoAction, _ int) string {
 		return fmt.Sprintf("%s:%s", c.Sha, c.NewAction)
@@ -165,6 +174,7 @@ func logTodoChanges(changes []daemon.ChangeTodoAction) string {
 
 type PrepareInteractiveRebaseCommandOpts struct {
 	baseShaOrRoot              string
+	onto                       string
 	instruction                daemon.Instruction
 	overrideEditor             bool
 	keepCommitsThatBecomeEmpty bool
@@ -183,6 +193,7 @@ func (self *RebaseCommands) PrepareInteractiveRebaseCommand(opts PrepareInteract
 		ArgIf(opts.keepCommitsThatBecomeEmpty && !self.version.IsOlderThan(2, 26, 0), "--empty=keep").
 		Arg("--no-autosquash").
 		ArgIf(!self.version.IsOlderThan(2, 22, 0), "--rebase-merges").
+		ArgIf(opts.onto != "", "--onto", opts.onto).
 		Arg(opts.baseShaOrRoot).
 		ToArgv()
 
@@ -306,6 +317,13 @@ func (self *RebaseCommands) RebaseBranch(branchName string) error {
 	return self.PrepareInteractiveRebaseCommand(PrepareInteractiveRebaseCommandOpts{baseShaOrRoot: branchName}).Run()
 }
 
+func (self *RebaseCommands) RebaseBranchFromBaseCommit(targetBranchName string, baseCommit string) error {
+	return self.PrepareInteractiveRebaseCommand(PrepareInteractiveRebaseCommandOpts{
+		baseShaOrRoot: baseCommit,
+		onto:          targetBranchName,
+	}).Run()
+}
+
 func (self *RebaseCommands) GenericMergeOrRebaseActionCmdObj(commandType string, command string) oscommands.ICmdObj {
 	cmdArgs := NewGitCmd(commandType).Arg("--" + command).ToArgv()
 

pkg/config/user_config.go

@@ -67,6 +67,8 @@ type ThemeConfig struct {
 	SelectedRangeBgColor       []string `yaml:"selectedRangeBgColor"`
 	CherryPickedCommitBgColor  []string `yaml:"cherryPickedCommitBgColor"`
 	CherryPickedCommitFgColor  []string `yaml:"cherryPickedCommitFgColor"`
+	MarkedBaseCommitBgColor    []string `yaml:"markedBaseCommitBgColor"`
+	MarkedBaseCommitFgColor    []string `yaml:"markedBaseCommitFgColor"`
 	UnstagedChangesColor       []string `yaml:"unstagedChangesColor"`
 	DefaultFgColor             []string `yaml:"defaultFgColor"`
 }
@@ -267,6 +269,7 @@ type KeybindingCommitsConfig struct {
 	CherryPickCopy                 string `yaml:"cherryPickCopy"`
 	CherryPickCopyRange            string `yaml:"cherryPickCopyRange"`
 	PasteCommits                   string `yaml:"pasteCommits"`
+	MarkCommitAsBaseForRebase      string `yaml:"markCommitAsBaseForRebase"`
 	CreateTag                      string `yaml:"tagCommit"`
 	CheckoutCommit                 string `yaml:"checkoutCommit"`
 	ResetCherryPick                string `yaml:"resetCherryPick"`
@@ -432,6 +435,8 @@ func GetDefaultConfig() *UserConfig {
 				SelectedRangeBgColor:       []string{"blue"},
 				CherryPickedCommitBgColor:  []string{"cyan"},
 				CherryPickedCommitFgColor:  []string{"blue"},
+				MarkedBaseCommitBgColor:    []string{"yellow"},
+				MarkedBaseCommitFgColor:    []string{"blue"},
 				UnstagedChangesColor:       []string{"red"},
 				DefaultFgColor:             []string{"default"},
 			},
@@ -613,6 +618,7 @@ func GetDefaultConfig() *UserConfig {
 				CherryPickCopy:                 "c",
 				CherryPickCopyRange:            "C",
 				PasteCommits:                   "v",
+				MarkCommitAsBaseForRebase:      "B",
 				CreateTag:                      "T",
 				CheckoutCommit:                 "<space>",
 				ResetCherryPick:                "<c-R>",

pkg/gui/context/local_commits_context.go

@@ -49,6 +49,7 @@ func NewLocalCommitsContext(c *ContextCommon) *LocalCommitsContext {
 			c.State().GetRepoState().GetScreenMode() != types.SCREEN_NORMAL,
 			c.Modes().CherryPicking.SelectedShaSet(),
 			c.Modes().Diffing.Ref,
+			c.Modes().MarkedBaseCommit.GetSha(),
 			c.UserConfig.Gui.TimeFormat,
 			c.UserConfig.Gui.ShortTimeFormat,
 			time.Now(),

pkg/gui/context/sub_commits_context.go

@@ -65,6 +65,7 @@ func NewSubCommitsContext(
 			c.State().GetRepoState().GetScreenMode() != types.SCREEN_NORMAL,
 			c.Modes().CherryPicking.SelectedShaSet(),
 			c.Modes().Diffing.Ref,
+			"",
 			c.UserConfig.Gui.TimeFormat,
 			c.UserConfig.Gui.ShortTimeFormat,
 			time.Now(),

pkg/gui/controllers/helpers/merge_and_rebase_helper.go

@@ -224,8 +224,18 @@ func (self *MergeAndRebaseHelper) RebaseOntoRef(ref string) error {
 			Key:   's',
 			OnPress: func() error {
 				self.c.LogAction(self.c.Tr.Actions.RebaseBranch)
-				err := self.c.Git().Rebase.RebaseBranch(ref)
-				return self.CheckMergeOrRebase(err)
+				baseCommit := self.c.Modes().MarkedBaseCommit.GetSha()
+				var err error
+				if baseCommit != "" {
+					err = self.c.Git().Rebase.RebaseBranchFromBaseCommit(ref, baseCommit)
+				} else {
+					err = self.c.Git().Rebase.RebaseBranch(ref)
+				}
+				err = self.CheckMergeOrRebase(err)
+				if err == nil {
+					self.c.Modes().MarkedBaseCommit.Reset()
+				}
+				return err
 			},
 		},
 		{
@@ -234,17 +244,26 @@ func (self *MergeAndRebaseHelper) RebaseOntoRef(ref string) error {
 			Tooltip: self.c.Tr.InteractiveRebaseTooltip,
 			OnPress: func() error {
 				self.c.LogAction(self.c.Tr.Actions.RebaseBranch)
-				err := self.c.Git().Rebase.EditRebase(ref)
+				baseCommit := self.c.Modes().MarkedBaseCommit.GetSha()
+				var err error
+				if baseCommit != "" {
+					err = self.c.Git().Rebase.EditRebaseFromBaseCommit(ref, baseCommit)
+				} else {
+					err = self.c.Git().Rebase.EditRebase(ref)
+				}
 				if err = self.CheckMergeOrRebase(err); err != nil {
 					return err
 				}
+				self.c.Modes().MarkedBaseCommit.Reset()
 				return self.c.PushContext(self.c.Contexts().LocalCommits)
 			},
 		},
 	}
 
 	title := utils.ResolvePlaceholderString(
-		self.c.Tr.RebasingTitle,
+		lo.Ternary(self.c.Modes().MarkedBaseCommit.GetSha() != "",
+			self.c.Tr.RebasingFromBaseCommitTitle,
+			self.c.Tr.RebasingTitle),
 		map[string]string{
 			"checkedOutBranch": checkedOutBranch,
 			"ref":              ref,
@@ -283,3 +302,8 @@ func (self *MergeAndRebaseHelper) MergeRefIntoCheckedOutBranch(refName string) e
 		},
 	})
 }
+
+func (self *MergeAndRebaseHelper) ResetMarkedBaseCommit() error {
+	self.c.Modes().MarkedBaseCommit.Reset()
+	return self.c.PostRefreshUpdate(self.c.Contexts().LocalCommits)
+}

pkg/gui/controllers/helpers/mode_helper.go

@@ -82,6 +82,16 @@ func (self *ModeHelper) Statuses() []ModeStatus {
 			},
 			Reset: self.ExitFilterMode,
 		},
+		{
+			IsActive: self.c.Modes().MarkedBaseCommit.Active,
+			Description: func() string {
+				return self.withResetButton(
+					self.c.Tr.MarkedBaseCommitStatus,
+					style.FgCyan,
+				)
+			},
+			Reset: self.mergeAndRebaseHelper.ResetMarkedBaseCommit,
+		},
 		{
 			IsActive: self.c.Modes().CherryPicking.Active,
 			Description: func() string {

pkg/gui/controllers/local_commits_controller.go

@@ -103,6 +103,12 @@ func (self *LocalCommitsController) GetKeybindings(opts types.KeybindingsOpts) [
 			Handler:     self.paste,
 			Description: self.c.Tr.PasteCommits,
 		},
+		{
+			Key:         opts.GetKey(opts.Config.Commits.MarkCommitAsBaseForRebase),
+			Handler:     self.checkSelected(self.markAsBaseCommit),
+			Description: self.c.Tr.MarkAsBaseCommit,
+			Tooltip:     self.c.Tr.MarkAsBaseCommitTooltip,
+		},
 		// overriding these navigation keybindings because we might need to load
 		// more commits on demand
 		{
@@ -840,6 +846,16 @@ func (self *LocalCommitsController) paste() error {
 	return self.c.Helpers().CherryPick.Paste()
 }
 
+func (self *LocalCommitsController) markAsBaseCommit(commit *models.Commit) error {
+	if commit.Sha == self.c.Modes().MarkedBaseCommit.GetSha() {
+		// Reset when invoking it again on the marked commit
+		self.c.Modes().MarkedBaseCommit.SetSha("")
+	} else {
+		self.c.Modes().MarkedBaseCommit.SetSha(commit.Sha)
+	}
+	return self.c.PostRefreshUpdate(self.c.Contexts().LocalCommits)
+}
+
 func (self *LocalCommitsController) isHeadCommit() bool {
 	return models.IsHeadCommit(self.c.Model().Commits, self.context().GetSelectedLineIdx())
 }

pkg/gui/gui.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/cherrypicking"
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/diffing"
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/filtering"
+	"github.com/jesseduffield/lazygit/pkg/gui/modes/marked_base_commit"
 	"github.com/jesseduffield/lazygit/pkg/gui/popup"
 	"github.com/jesseduffield/lazygit/pkg/gui/presentation"
 	"github.com/jesseduffield/lazygit/pkg/gui/presentation/authors"
@@ -362,9 +363,10 @@ func (gui *Gui) resetState(startArgs appTypes.StartArgs) types.Context {
 			Authors:               map[string]*models.Author{},
 		},
 		Modes: &types.Modes{
-			Filtering:     filtering.New(startArgs.FilterPath),
-			CherryPicking: cherrypicking.New(),
-			Diffing:       diffing.New(),
+			Filtering:        filtering.New(startArgs.FilterPath),
+			CherryPicking:    cherrypicking.New(),
+			Diffing:          diffing.New(),
+			MarkedBaseCommit: marked_base_commit.New(),
 		},
 		ScreenMode: initialScreenMode,
 		// TODO: only use contexts from context manager

pkg/gui/modes/marked_base_commit/marked_base_commit.go

@@ -0,0 +1,25 @@
+package marked_base_commit
+
+type MarkedBaseCommit struct {
+	sha string // the sha of the commit used as a rebase base commit; empty string when unset
+}
+
+func New() MarkedBaseCommit {
+	return MarkedBaseCommit{}
+}
+
+func (m *MarkedBaseCommit) Active() bool {
+	return m.sha != ""
+}
+
+func (m *MarkedBaseCommit) Reset() {
+	m.sha = ""
+}
+
+func (m *MarkedBaseCommit) SetSha(sha string) {
+	m.sha = sha
+}
+
+func (m *MarkedBaseCommit) GetSha() string {
+	return m.sha
+}

pkg/gui/presentation/commits.go

@@ -45,6 +45,7 @@ func GetCommitListDisplayStrings(
 	fullDescription bool,
 	cherryPickedCommitShaSet *set.Set[string],
 	diffName string,
+	markedBaseCommit string,
 	timeFormat string,
 	shortTimeFormat string,
 	now time.Time,
@@ -128,6 +129,7 @@ func GetCommitListDisplayStrings(
 
 	lines := make([][]string, 0, len(filteredCommits))
 	var bisectStatus BisectStatus
+	willBeRebased := markedBaseCommit == ""
 	for i, commit := range filteredCommits {
 		unfilteredIdx := i + startIdx
 		bisectStatus = getBisectStatus(unfilteredIdx, commit.Sha, bisectInfo, bisectBounds)
@@ -136,11 +138,17 @@ func GetCommitListDisplayStrings(
 			isYouAreHereCommit = true
 			showYouAreHereLabel = false
 		}
+		isMarkedBaseCommit := commit.Sha != "" && commit.Sha == markedBaseCommit
+		if isMarkedBaseCommit {
+			willBeRebased = true
+		}
 		lines = append(lines, displayCommit(
 			common,
 			commit,
 			branchHeadsToVisualize,
 			cherryPickedCommitShaSet,
+			isMarkedBaseCommit,
+			willBeRebased,
 			diffName,
 			timeFormat,
 			shortTimeFormat,
@@ -290,6 +298,8 @@ func displayCommit(
 	commit *models.Commit,
 	branchHeadsToVisualize *set.Set[string],
 	cherryPickedCommitShaSet *set.Set[string],
+	isMarkedBaseCommit bool,
+	willBeRebased bool,
 	diffName string,
 	timeFormat string,
 	shortTimeFormat string,
@@ -335,6 +345,12 @@ func displayCommit(
 		color := lo.Ternary(commit.Action == models.ActionConflict, style.FgRed, style.FgYellow)
 		youAreHere := color.Sprintf("<-- %s ---", common.Tr.YouAreHere)
 		name = fmt.Sprintf("%s %s", youAreHere, name)
+	} else if isMarkedBaseCommit {
+		rebaseFromHere := style.FgYellow.Sprint(common.Tr.MarkedCommitMarker)
+		name = fmt.Sprintf("%s %s", rebaseFromHere, name)
+	} else if !willBeRebased {
+		willBeRebased := style.FgYellow.Sprint("✓")
+		name = fmt.Sprintf("%s %s", willBeRebased, name)
 	}
 
 	authorFunc := authors.ShortAuthor

pkg/gui/presentation/commits_test.go

@@ -33,6 +33,7 @@ func TestGetCommitListDisplayStrings(t *testing.T) {
 		hasUpdateRefConfig       bool
 		fullDescription          bool
 		cherryPickedCommitShaSet *set.Set[string]
+		markedBaseCommit         string
 		diffName                 string
 		timeFormat               string
 		shortTimeFormat          string
@@ -408,6 +409,7 @@ func TestGetCommitListDisplayStrings(t *testing.T) {
 					s.fullDescription,
 					s.cherryPickedCommitShaSet,
 					s.diffName,
+					s.markedBaseCommit,
 					s.timeFormat,
 					s.shortTimeFormat,
 					s.now,

pkg/gui/types/modes.go

@@ -4,10 +4,12 @@ import (
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/cherrypicking"
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/diffing"
 	"github.com/jesseduffield/lazygit/pkg/gui/modes/filtering"
+	"github.com/jesseduffield/lazygit/pkg/gui/modes/marked_base_commit"
 )
 
 type Modes struct {
-	Filtering     filtering.Filtering
-	CherryPicking *cherrypicking.CherryPicking
-	Diffing       diffing.Diffing
+	Filtering        filtering.Filtering
+	CherryPicking    *cherrypicking.CherryPicking
+	Diffing          diffing.Diffing
+	MarkedBaseCommit marked_base_commit.MarkedBaseCommit
 }

pkg/i18n/english.go

@@ -209,6 +209,7 @@ type TranslationSet struct {
 	ConflictsResolved                   string
 	Continue                            string
 	RebasingTitle                       string
+	RebasingFromBaseCommitTitle         string
 	SimpleRebase                        string
 	InteractiveRebase                   string
 	InteractiveRebaseTooltip            string
@@ -578,6 +579,10 @@ type TranslationSet struct {
 	Name                                string
 	Branch                              string
 	Path                                string
+	MarkedBaseCommitStatus              string
+	MarkAsBaseCommit                    string
+	MarkAsBaseCommitTooltip             string
+	MarkedCommitMarker                  string
 	Actions                             Actions
 	Bisect                              Bisect
 }
@@ -947,6 +952,7 @@ func EnglishTranslationSet() TranslationSet {
 		Continue:                            "Continue",
 		Keybindings:                         "Keybindings",
 		RebasingTitle:                       "Rebase '{{.checkedOutBranch}}' onto '{{.ref}}'",
+		RebasingFromBaseCommitTitle:         "Rebase '{{.checkedOutBranch}}' from marked base onto '{{.ref}}'",
 		SimpleRebase:                        "Simple rebase",
 		InteractiveRebase:                   "Interactive rebase",
 		InteractiveRebaseTooltip:            "Begin an interactive rebase with a break at the start, so you can update the TODO commits before continuing",
@@ -1315,6 +1321,10 @@ func EnglishTranslationSet() TranslationSet {
 		Name:                                "Name",
 		Branch:                              "Branch",
 		Path:                                "Path",
+		MarkedBaseCommitStatus:              "Marked a base commit for rebase",
+		MarkAsBaseCommit:                    "Mark commit as base commit for rebase",
+		MarkAsBaseCommitTooltip:             "Select a base commit for the next rebase; this will effectively perform a 'git rebase --onto'.",
+		MarkedCommitMarker:                  "↑↑↑ Will rebase from here ↑↑↑",
 		Actions: Actions{
 			// TODO: combine this with the original keybinding descriptions (those are all in lowercase atm)
 			CheckoutCommit:                    "Checkout commit",

pkg/integration/tests/branch/rebase_from_marked_base.go

@@ -0,0 +1,78 @@
+package branch
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var RebaseFromMarkedBase = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Rebase onto another branch from a marked base commit",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.
+			NewBranch("base-branch").
+			EmptyCommit("one").
+			EmptyCommit("two").
+			EmptyCommit("three").
+			NewBranch("active-branch").
+			EmptyCommit("active one").
+			EmptyCommit("active two").
+			EmptyCommit("active three").
+			Checkout("base-branch").
+			NewBranch("target-branch").
+			EmptyCommit("target one").
+			EmptyCommit("target two").
+			Checkout("active-branch")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			Focus().
+			Lines(
+				Contains("active three"),
+				Contains("active two"),
+				Contains("active one"),
+				Contains("three"),
+				Contains("two"),
+				Contains("one"),
+			).
+			NavigateToLine(Contains("active one")).
+			Press(keys.Commits.MarkCommitAsBaseForRebase).
+			Lines(
+				Contains("active three"),
+				Contains("active two"),
+				Contains("↑↑↑ Will rebase from here ↑↑↑ active one"),
+				Contains("three"),
+				Contains("two"),
+				Contains("one"),
+			)
+
+		t.Views().Information().Content(Contains("Marked a base commit for rebase"))
+
+		t.Views().Branches().
+			Focus().
+			Lines(
+				Contains("active-branch"),
+				Contains("target-branch"),
+				Contains("base-branch"),
+			).
+			SelectNextItem().
+			Press(keys.Branches.RebaseBranch)
+
+		t.ExpectPopup().Menu().
+			Title(Equals("Rebase 'active-branch' from marked base onto 'target-branch'")).
+			Select(Contains("Simple rebase")).
+			Confirm()
+
+		t.Views().Commits().Lines(
+			Contains("active three"),
+			Contains("active two"),
+			Contains("target two"),
+			Contains("target one"),
+			Contains("three"),
+			Contains("two"),
+			Contains("one"),
+		)
+	},
+})

pkg/integration/tests/test_list.go

@@ -44,6 +44,7 @@ var tests = []*components.IntegrationTest{
 	branch.RebaseAndDrop,
 	branch.RebaseCancelOnConflict,
 	branch.RebaseDoesNotAutosquash,
+	branch.RebaseFromMarkedBase,
 	branch.Reset,
 	branch.ResetUpstream,
 	branch.SetUpstream,

pkg/theme/theme.go

@@ -36,6 +36,9 @@ var (
 	// CherryPickedCommitColor is the text style when cherry picking a commit
 	CherryPickedCommitTextStyle = style.New()
 
+	// MarkedBaseCommitTextStyle is the text style of the marked rebase base commit
+	MarkedBaseCommitTextStyle = style.New()
+
 	OptionsFgColor = style.New()
 
 	DiffTerminalColor = style.FgMagenta
@@ -55,6 +58,10 @@ func UpdateTheme(themeConfig config.ThemeConfig) {
 	cherryPickedCommitFgTextStyle := GetTextStyle(themeConfig.CherryPickedCommitFgColor, false)
 	CherryPickedCommitTextStyle = cherryPickedCommitBgTextStyle.MergeStyle(cherryPickedCommitFgTextStyle)
 
+	markedBaseCommitBgTextStyle := GetTextStyle(themeConfig.MarkedBaseCommitBgColor, true)
+	markedBaseCommitFgTextStyle := GetTextStyle(themeConfig.MarkedBaseCommitFgColor, false)
+	MarkedBaseCommitTextStyle = markedBaseCommitBgTextStyle.MergeStyle(markedBaseCommitFgTextStyle)
+
 	unstagedChangesTextStyle := GetTextStyle(themeConfig.UnstagedChangesColor, false)
 	UnstagedChangesColor = unstagedChangesTextStyle