History of err 1 change

In src/cli/ui.rs, lines 187–189 on c1fe1fb2502163ba920d3a32d3f613f952f1c0f9c91e2e79d5abd4a912cdb398. 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 187,189:src/cli/ui.rs.