History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1178–1195 on a707df24e576cc34894b02f62bb094ef4f604802cad7d574dba928d29d4b598b. 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 1178,1195:src/cli/mod.rs.