History of main 2 changes

In crates/oh/src/main.rs, lines 648–665 on a549ddd5941ffe53cfa2efc116cf480e103dcf71b7ff693631ee529601089d74. 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 648,665:crates/oh/src/main.rs.