Function ListWorktrees

internal/git/worktree.go:110–147

ListWorktrees parses `git worktree list --porcelain` and returns all worktrees.

(repoDir string)

// ListWorktrees parses `git worktree list --porcelain` and returns all worktrees.
func ListWorktrees(repoDir string) ([]Worktree, error) {
	cmd := exec.Command("git", "worktree", "list", "--porcelain")
	cmd.Dir = repoDir
	output, err := cmd.Output()
	if err != nil {
		return nil, fmt.Errorf("failed to list worktrees: %w", err)
	}

	var worktrees []Worktree
	var current Worktree

	for _, line := range strings.Split(string(output), "\n") {
		line = strings.TrimSpace(line)
		switch {
		case strings.HasPrefix(line, "worktree "):
			current = Worktree{Path: strings.TrimPrefix(line, "worktree ")}
		case strings.HasPrefix(line, "HEAD "):
			current.HEAD = strings.TrimPrefix(line, "HEAD ")
		case strings.HasPrefix(line, "branch "):
			// refs/heads/branch-name -> branch-name
			ref := strings.TrimPrefix(line, "branch ")
			current.Branch = strings.TrimPrefix(ref, "refs/heads/")
		case line == "prunable":
			current.Prunable = true
		case line == "":
			if current.Path != "" {
				worktrees = append(worktrees, current)
				current = Worktree{}
			}
		}
	}
	// Append last entry if not empty-line terminated
	if current.Path != "" {
		worktrees = append(worktrees, current)
	}

	return worktrees, nil
}

// IsWorktree checks if a path is a valid git worktree.
func IsWorktree(path string) bool {