History of plural 1 change

In src/cli/format.rs, lines 15–17 on 82202a4d0025798bbb6288e78c070c67cb8c6f409079e9364e5a109758201c99. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 15,17:src/cli/format.rs.