History of Ripples::step 1 change

In crates/backdrop/src/ripples.rs, lines 176–182 on 06b756358f7e15fa0441184178b46de52dd21e161d43a0dbe337234f0d96db37. 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 176,182:crates/backdrop/src/ripples.rs.