History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1193–1210 on acadb5ed28a17ba196c8bd519978745dfa54c0f31efa37e47d6df021a7ec1889. 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 1193,1210:src/cli/mod.rs.