History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1636–1653 on e980087ed0b1f55e860ad4e186df47d4577445c0591ca6f5d97ea73a2cdc7589. 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 1636,1653:src/cli/mod.rs.