Test, validate and match regular expressions
This PCRE regex matches French country names (as suggested by the title 'Tous les pays') at the end of lines. It supports accented characters (é, è, à, ç, î, etc.), hyphens, apostrophes, slashes, and parentheses, allowing multi-word names like 'Côte d'Ivoire' or 'États-Unis' separated by spaces, commas, or colons. With gm flags, it's useful for validating or extracting French country names line-by-line from text files or lists.