History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1562–1579 on 51d4862a16d8de259898ae8d07a48ad1887fc810ee30de0e46b1cddaa8f6e95e. 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 1562,1579:src/cli/mod.rs.