YIDDISH has entered the American language so extensively by now that most people have probably heard the word “shiksa”—especially if they’ve read Philip Roth’s Portnoy’s Complaint. It’s the Yiddish word for a gentile woman. Robert Hofler’s new book on the making of the Barbra Streisand-Robert Redford movie The Way We Were (1973) is about its masculine equivalent, the much less euphonic “shegetz.”