History of plural 1 change

In src/cli/format.rs, lines 13–15 on ebef3715554c3f6d1196d0772b20da002952f2d16a832d3beca8aaf41473fae1. 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 13,15:src/cli/format.rs.