Add fixup option into commits panel

commits_panel.go

@@ -65,6 +65,7 @@ func renderCommitsOptions(g *gocui.Gui) error {
 		"s":       "squash down",
 		"r":       "rename",
 		"g":       "reset to this commit",
+		"f":       "fixup commit",
 		"← → ↑ ↓": "navigate",
 	})
 }
@@ -105,6 +106,25 @@ func handleCommitSquashDown(g *gocui.Gui, v *gocui.View) error {
 	return handleCommitSelect(g, v)
 }
 
+func handleCommitFixup(g *gocui.Gui, v *gocui.View) error {
+	if len(state.Commits) == 1 {
+		return createErrorPanel(g, "You have no commits to squash with")
+	}
+	branch := state.Branches[0]
+	commit, err := getSelectedCommit(g)
+	if err != nil {
+		return err
+	}
+	if output, err := gitSquashFixupCommit(branch.Name, commit.Sha); err != nil {
+		return createErrorPanel(g, output)
+	}
+	if err := refreshCommits(g); err != nil {
+		panic(err)
+	}
+	refreshStatus(g)
+	return handleCommitSelect(g, v)
+}
+
 func handleRenameCommit(g *gocui.Gui, v *gocui.View) error {
 	if getItemPosition(v) != 0 {
 		return createErrorPanel(g, "Can only rename topmost commit")

gitcommands.go

@@ -491,6 +491,40 @@ func gitSquashPreviousTwoCommits(message string) (string, error) {
 	return runDirectCommand("git reset --soft HEAD^ && git commit --amend -m \"" + message + "\"")
 }
 
+func gitSquashFixupCommit(branchName string, shaValue string) (string, error) {
+	ret := ""
+	output, err := runDirectCommand("git checkout -q " + shaValue)
+	ret += output
+	if err != nil {
+		goto FIXUP_ERROR
+	}
+	output, err = runDirectCommand("git reset --soft " + shaValue + "^")
+	ret += output
+	if err != nil {
+		goto FIXUP_ERROR
+	}
+	output, err = runDirectCommand("git commit --amend -C " + shaValue + "^")
+	ret += output
+	if err != nil {
+		goto FIXUP_ERROR
+	}
+	output, err = runDirectCommand("git rebase --onto HEAD " + shaValue + " " + branchName)
+	ret += output
+	if err != nil {
+		goto FIXUP_ERROR
+	}
+	return ret, err
+
+FIXUP_ERROR:
+	//Failed to perform rebase, back to the original branch
+	output2, err2 := runDirectCommand("git checkout " + branchName)
+	ret += output2
+	if err2 != nil {
+		return ret, err2
+	}
+	return ret, err
+}
+
 func gitRenameCommit(message string) (string, error) {
 	return runDirectCommand("git commit --allow-empty --amend -m \"" + message + "\"")
 }

keybindings.go

@@ -55,6 +55,7 @@ func keybindings(g *gocui.Gui) error {
 		Binding{ViewName: "commits", Key: 's', Modifier: gocui.ModNone, Handler: handleCommitSquashDown},
 		Binding{ViewName: "commits", Key: 'r', Modifier: gocui.ModNone, Handler: handleRenameCommit},
 		Binding{ViewName: "commits", Key: 'g', Modifier: gocui.ModNone, Handler: handleResetToCommit},
+		Binding{ViewName: "commits", Key: 'f', Modifier: gocui.ModNone, Handler: handleCommitFixup},
 		Binding{ViewName: "stash", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handleStashApply},
 		Binding{ViewName: "stash", Key: 'g', Modifier: gocui.ModNone, Handler: handleStashPop},
 		Binding{ViewName: "stash", Key: 'd', Modifier: gocui.ModNone, Handler: handleStashDrop},