Function filterGitIgnored

apps/cli/internal/taskcontext/resolve.go:220–256

filterGitIgnored removes gitignored files from the list using git check-ignore. Falls back gracefully (returns input unchanged) if git is unavailable or the project is not a repo.

(files []FileEntry, projectRoot string)

// filterGitIgnored removes gitignored files from the list using git check-ignore.
// Falls back gracefully (returns input unchanged) if git is unavailable or the project is not a repo.
func filterGitIgnored(files []FileEntry, projectRoot string) []FileEntry {
	if len(files) == 0 {
		return files
	}

	var paths []string
	for _, f := range files {
		paths = append(paths, f.Path)
	}

	cmd := exec.Command("git", "check-ignore", "--stdin")
	cmd.Dir = projectRoot
	cmd.Stdin = strings.NewReader(strings.Join(paths, "\n"))

	var out bytes.Buffer
	cmd.Stdout = &out

	if err := cmd.Run(); err != nil {
		// exit code 1 = no paths are ignored; other errors = git unavailable
		return files
	}

	ignored := make(map[string]bool)
	for _, line := range strings.Split(strings.TrimSpace(out.String()), "\n") {
		if line != "" {
			ignored[line] = true
		}
	}

	var filtered []FileEntry
	for _, f := range files {
		if !ignored[f.Path] {
			filtered = append(filtered, f)
		}
	}
	return filtered
}

// inlineContents reads file contents and counts lines for each existing text file.
// Binary files and known generated files (lock files, etc.) are skipped.