History of plural 1 change

In src/cli/format.rs, lines 15–17 on d069701a4997c24716b412a12b1e828a3c578aebc2ddc3276f16def9a3901bde. 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.