History of MessageHistory::add 1 change

In src/commitbox.ts, lines 64–70 on 196392053c9f742e9981f5fb9da6cfcb90963b8dcf0a551fee71f4e1e3885706. 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 64,70:src/commitbox.ts.