Method editHunk

internal/ui/patch.go:550–633

(hunk *git.Hunk, mode git.PatchMode, header git.Hunk)

}

func (a *App) editHunk(hunk *git.Hunk, mode git.PatchMode, header git.Hunk) (*git.Hunk, error) {
	hunkFile := filepath.Join(a.repo.GitDir(), "addp-hunk-edit.diff")

	content := "# Manual hunk edit mode -- see bottom for a quick guide.\n"
	for _, line := range hunk.Text {
		content += line + "\n"
	}

	content += "# ---\n"
	content += "# To remove '-' lines, make them ' ' lines (context).\n"
	content += "# To remove '+' lines, delete them.\n"
	content += "# Lines starting with # will be removed.\n"

	if err := ioutil.WriteFile(hunkFile, []byte(content), 0644); err != nil {
		return nil, err
	}

	defer os.Remove(hunkFile)

	editor := os.Getenv("EDITOR")
	if editor == "" {
		editorOutput, err := a.repo.RunCommand("var", "GIT_EDITOR")
		if err != nil {
			editor = "vi"
		} else {
			editor = strings.TrimSpace(string(editorOutput))
		}
	}

	cmd := exec.Command("sh", "-c", editor+" "+hunkFile)
	cmd.Stdin = os.Stdin
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	if err := cmd.Run(); err != nil {
		return nil, err
	}

	editedContent, err := ioutil.ReadFile(hunkFile)
	if err != nil {
		return nil, err
	}

	lines := strings.Split(string(editedContent), "\n")
	var newText []string
	var newDisplay []string

	for _, line := range lines {
		if !strings.HasPrefix(line, "#") && strings.TrimSpace(line) != "" {
			newText = append(newText, line)
			newDisplay = append(newDisplay, line)
		}
	}

	if len(newText) == 0 {
		return nil, nil
	}