Test, validate and match regular expressions
Matches street addresses consisting of a street name (letters), a separator, and an optional number marker (N, No., N°) followed by a house number. The number may include separators like -, /, ., _ plus letters or extra digits (e.g., 123-4a, 12/3), or the abbreviation 'snc' (sans numéro/no number). Useful for parsing or extracting house numbers from address strings in French/European formats.