History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1374–1391 on 19303b4a06fbf4b02fded411fc361ffe549c29b7ef535092bc45ce77d4056456. 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 1374,1391:src/cli/mod.rs.