Allow interactive rebasing all the way down to the first commit

Pass --root instead of a sha when we want to rebase down to the initial commit.

pkg/commands/git_commands/rebase.go

@@ -130,7 +130,7 @@ func (self *RebaseCommands) InteractiveRebaseBreakAfter(commits []*models.Commit
 // PrepareInteractiveRebaseCommand returns the cmd for an interactive rebase
 // we tell git to run lazygit to edit the todo list, and we pass the client
 // lazygit a todo string to write to the todo file
-func (self *RebaseCommands) PrepareInteractiveRebaseCommand(baseSha string, todoLines []TodoLine, overrideEditor bool) oscommands.ICmdObj {
+func (self *RebaseCommands) PrepareInteractiveRebaseCommand(baseShaOrRoot string, todoLines []TodoLine, overrideEditor bool) oscommands.ICmdObj {
 	todo := self.buildTodo(todoLines)
 	ex := oscommands.GetLazygitPath()
 
@@ -139,7 +139,7 @@ func (self *RebaseCommands) PrepareInteractiveRebaseCommand(baseSha string, todo
 		debug = "TRUE"
 	}
 
-	cmdStr := fmt.Sprintf("git rebase --interactive --autostash --keep-empty --no-autosquash %s", baseSha)
+	cmdStr := fmt.Sprintf("git rebase --interactive --autostash --keep-empty --no-autosquash %s", baseShaOrRoot)
 	self.Log.WithField("command", cmdStr).Debug("RunCommand")
 
 	cmdObj := self.cmd.New(cmdStr)
@@ -172,10 +172,6 @@ func (self *RebaseCommands) PrepareInteractiveRebaseCommand(baseSha string, todo
 func (self *RebaseCommands) BuildSingleActionTodo(commits []*models.Commit, actionIndex int, action string) ([]TodoLine, string, error) {
 	baseIndex := actionIndex + 1
 
-	if len(commits) <= baseIndex {
-		return nil, "", errors.New(self.Tr.CannotRebaseOntoFirstCommit)
-	}
-
 	if action == "squash" || action == "fixup" {
 		baseIndex++
 	}
@@ -193,7 +189,12 @@ func (self *RebaseCommands) BuildSingleActionTodo(commits []*models.Commit, acti
 		}
 	})
 
-	return todoLines, commits[baseIndex].Sha, nil
+	baseSha := "--root"
+	if baseIndex < len(commits) {
+		baseSha = commits[baseIndex].Sha
+	}
+
+	return todoLines, baseSha, nil
 }
 
 // AmendTo amends the given commit with whatever files are staged

pkg/i18n/chinese.go

@@ -216,7 +216,6 @@ func chineseTranslationSet() TranslationSet {
 		LcPasteCommits:                      "粘贴提交（拣选）",
 		SureCherryPick:                      "您确定要将选中的提交进行拣选到这个分支吗？",
 		CherryPick:                          "拣选 (Cherry-Pick)",
-		CannotRebaseOntoFirstCommit:         "您不能以交互方式变基 (rebase) 至第一次提交",
 		Donate:                              "捐助",
 		AskQuestion:                         "提问咨询",
 		PrevLine:                            "选择上一行",

pkg/i18n/dutch.go

@@ -181,7 +181,6 @@ func dutchTranslationSet() TranslationSet {
 		LcPasteCommits:                      "plak commits (cherry-pick)",
 		SureCherryPick:                      "Weet je zeker dat je de gekopieerde commits naar deze branch wil cherry-picken?",
 		CherryPick:                          "Cherry-Pick",
-		CannotRebaseOntoFirstCommit:         "Je kan niet interactief rebasen naar de eerste commit",
 		Donate:                              "Doneer",
 		PrevLine:                            "selecteer de vorige lijn",
 		NextLine:                            "selecteer de volgende lijn",

pkg/i18n/english.go

@@ -219,7 +219,6 @@ type TranslationSet struct {
 	LcPasteCommits                      string
 	SureCherryPick                      string
 	CherryPick                          string
-	CannotRebaseOntoFirstCommit         string
 	Donate                              string
 	AskQuestion                         string
 	PrevLine                            string
@@ -868,7 +867,6 @@ func EnglishTranslationSet() TranslationSet {
 		LcPasteCommits:                      "paste commits (cherry-pick)",
 		SureCherryPick:                      "Are you sure you want to cherry-pick the copied commits onto this branch?",
 		CherryPick:                          "Cherry-Pick",
-		CannotRebaseOntoFirstCommit:         "You cannot interactive rebase onto the first commit",
 		Donate:                              "Donate",
 		AskQuestion:                         "Ask Question",
 		PrevLine:                            "select previous line",

pkg/i18n/japanese.go

@@ -216,7 +216,6 @@ func japaneseTranslationSet() TranslationSet {
 		LcPasteCommits:        "コミットを貼り付け (cherry-pick)",
 		// SureCherryPick:                      "Are you sure you want to cherry-pick the copied commits onto this branch?",
 		CherryPick:            "Cherry-Pick",
-		// CannotRebaseOntoFirstCommit:         "You cannot interactive rebase onto the first commit",
 		Donate:                "支援",
 		AskQuestion:           "質問",
 		PrevLine:              "前の行を選択",

pkg/i18n/korean.go

@@ -217,7 +217,6 @@ func koreanTranslationSet() TranslationSet {
 		LcPasteCommits:                      "커밋을 붙여넣기 (cherry-pick)",
 		SureCherryPick:                      "정말로 복사한 커밋을 이 브랜치에 체리픽하시겠습니까?",
 		CherryPick:                          "체리픽",
-		CannotRebaseOntoFirstCommit:         "첫 번째 커밋에 대해 대화식으로 리베이스할 수 없습니다.",
 		Donate:                              "후원",
 		AskQuestion:                         "질문하기",
 		PrevLine:                            "이전 줄 선택",

pkg/i18n/polish.go

@@ -149,7 +149,6 @@ func polishTranslationSet() TranslationSet {
 		LcPasteCommits:                      "wklej commity (przebieranie)",
 		SureCherryPick:                      "Czy na pewno chcesz przebierać w skopiowanych commitach na tej gałęzi?",
 		CherryPick:                          "Przebieranie",
-		CannotRebaseOntoFirstCommit:         "Nie można interaktywnie zmienić bazy na pierwszym commicie",
 		Donate:                              "Wesprzyj",
 		PrevLine:                            "poprzednia linia",
 		NextLine:                            "następna linia",