History of Ripples::step 1 change

In crates/backdrop/src/ripples.rs, lines 176–182 on 05f1a85a284253adc4e796dba60b0a0556198b5e2be230687802a9a5ee3af821. 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.