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fix(strings): transliterate ß, æ, ø and Ł in slugify - #459
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slugify relied on NFKD + ASCII encoding, which deletes letters that have no decomposition, so "Ærøskøbing" became "rskbing" and "Straße" "strae". Run the text through deburr first, which maps these letters.
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Base: develop
slugifydrops letters that have no Unicode decomposition:It uses NFKD and then encodes to ASCII with
ignore. NFKD only splits letters like é into a base letter and a mark, so ß, æ, ø, Ł and œ are deleted.deburralready maps these (including the Latin Extended-A letters from #442), soslugifynow runs the text throughdeburrfirst:aeroskobing,strasse-5,lodz,ol-og-brod. The existing cases (Un éléphant à l'orée du bois, the apostrophes) give the same slugs.Added a
test_slugifycase that fails without the change.pytest tests: no new failures (the 334pytest_mypy_testingcases fail the same way on develop here). Changelog and AUTHORS updated.