History of when 2 changes

In src/cli/format.rs, lines 20–41 on fa53a2849de8c3e11ee3504c97eaae90de7bb38578d4c6ce04ce27572edab824. 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 20,41:src/cli/format.rs.