JEAN DUBUFFET has been having a moment—or maybe something longer, and certainly more expansive. New York’s Museum of Modern Art had a very well received in-house show of his work in 2014–15, which was quickly followed by a display of the artist’s collection of art brut that opened at the nearby American Folk Art Museum in 2015. (Writing on the latter show, Roberta Smith slyly suggested that many of Dubuffet’s best efforts were made during a ten-year period when the collection was out of his hands, temporarily housed on Long Island.) This New York affair continued in 2016, when Acquavella Galleries