Language 2026 10 08

# Note on `slugify(title)`

`slugify` converts a title into a URL-safe slug: lowercase, words joined by single hyphens, punctuation dropped, and non-Latin scripts transliterated to ASCII where reasonable. It first guards against non-string input (returning an empty string), then normalizes the text with Unicode NFKD decomposition and strips combining diacritical marks, so accented Latin letters like `é` become `e` and `ü` becomes `u`. Characters that NFKD does not reduce to ASCII are handled by an explicit transliteration map covering Cyrillic and Greek plus standalone Latin letters such as `ß`, `æ`, `œ`, `ø`, and `đ`; because decomposition runs before transliteration, letters that carry accents (e.g. Greek `ή`) are still mapped correctly. Apostrophes are removed rather than converted to hyphens so contractions stay single words (`It's` → `its`), and every remaining run of non-alphanumeric characters collapses to one hyphen, with leading and trailing hyphens trimmed afterward. The function is dependency-free, deterministic, and idempotent for already-slugified input.