PARIS - From next week, one of France's most iconic institutions — the smoky cafe — will be but a hazy memory. The extension of France's smoking ban to bars, discotheques, restaurants, hotels, casinos and cafes on Jan. 1 marks a momentous cultural shift in a country where thinkers like Jean-Paul Sartre and Simone de Beauvoir once held court while clutching cigarettes in Left Bank cafes. For smokers, this is the most distressing part of a phased smoking ban that began last February in workplaces, schools, airports, hospitals and other "closed and covered" public places like train stations. But many...