History of err 1 change

In src/cli/ui.rs, lines 187–189 on e4cd0c540dab470bf56fcf821dd9464d1e2b12c0e1c89533dd0714ac5fc99b22. 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.