History of help_tests::walk 1 change

In src/cli/mod.rs, lines 1558–1575 on 7a3cc5149a1462290d018fa2b022c6dadfc89ce48dd3222db48712431fcc1ab6. 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 1558,1575:src/cli/mod.rs.