History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1486–1503 on 6f06d9f912b4c91ac91bc5ff3c5b3bf96d46f7e5201f2eb053f46b981fa12885. 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 1486,1503:src/cli/mod.rs.