{"id":"license-key-empty-input-safe","text":"License-key-formatting handles all-dashes or empty input without error — the loop range is empty, `parts` stays `[]`, and `\"-\".join([])` returns `\"\"`.","truth_value":"IN","source":"entries/2026/06/06/license-key-formatting-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"license-key-empty-input-safe","truth_value":"IN","reason":"premise"}]}}